Snapshot tool: S3 orphaned files cleanup (#44551)

A tool to work with snapshots.
Co-authored by @original-brownbear. 
This commit adds snapshot tool and the single command cleanup, that
cleans up orphaned files for S3.
Snapshot tool lives in x-pack/snapshot-tool.

buildSrc/src/main/java/org/elasticsearch/gradle/ElasticsearchDistribution.java

@@ -68,7 +68,7 @@ public class ElasticsearchDistribution implements Buildable {
     }
 
     // package private to tests can use
-    static final Platform CURRENT_PLATFORM = OS.<Platform>conditional()
+    public static final Platform CURRENT_PLATFORM = OS.<Platform>conditional()
         .onLinux(() -> Platform.LINUX)
         .onWindows(() -> Platform.WINDOWS)
         .onMac(() -> Platform.DARWIN)

server/src/main/java/org/elasticsearch/repositories/blobstore/BlobStoreRepository.java

@@ -133,7 +133,7 @@ public abstract class BlobStoreRepository extends AbstractLifecycleComponent imp
 
     public static final String SNAPSHOT_CODEC = "snapshot";
 
-    private static final String INDEX_FILE_PREFIX = "index-";
+    public static final String INDEX_FILE_PREFIX = "index-";
 
     public static final String INDEX_LATEST_BLOB = "index.latest";
 

test/framework/src/main/java/org/elasticsearch/repositories/blobstore/BlobStoreTestUtil.java

@@ -22,6 +22,9 @@ import org.elasticsearch.action.ActionRunnable;
 import org.elasticsearch.action.support.PlainActionFuture;
 import org.elasticsearch.common.Strings;
 import org.elasticsearch.common.blobstore.BlobContainer;
+import org.elasticsearch.common.blobstore.BlobMetaData;
+import org.elasticsearch.common.blobstore.BlobPath;
+import org.elasticsearch.common.blobstore.BlobStore;
 import org.elasticsearch.common.unit.TimeValue;
 import org.elasticsearch.common.xcontent.LoggingDeprecationHandler;
 import org.elasticsearch.common.xcontent.NamedXContentRegistry;
@@ -35,6 +38,7 @@ import org.elasticsearch.snapshots.SnapshotInfo;
 import org.elasticsearch.test.InternalTestCluster;
 import org.elasticsearch.threadpool.ThreadPool;
 
+import java.io.ByteArrayInputStream;
 import java.io.DataInputStream;
 import java.io.IOException;
 import java.io.InputStream;
@@ -42,12 +46,17 @@ import java.nio.file.NoSuchFileException;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.List;
-import java.util.Locale;
 import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ExecutionException;
+import java.util.Locale;
 import java.util.concurrent.Executor;
+import java.util.concurrent.atomic.AtomicLong;
 import java.util.stream.Collectors;
 
+import static org.elasticsearch.test.ESTestCase.randomIntBetween;
 import static org.hamcrest.Matchers.containsInAnyOrder;
+import static org.hamcrest.Matchers.empty;
 import static org.hamcrest.Matchers.hasKey;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertThat;
@@ -168,4 +177,72 @@ public final class BlobStoreTestUtil {
             }
         }
     }
+
+    public static long createDanglingIndex(BlobStoreRepository repository, String name, Set<String> files)
+            throws InterruptedException, ExecutionException {
+        final PlainActionFuture<Void> future = PlainActionFuture.newFuture();
+        final AtomicLong totalSize = new AtomicLong();
+        repository.threadPool().generic().execute(new ActionRunnable<>(future) {
+            @Override
+            protected void doRun() throws Exception {
+                final BlobStore blobStore = repository.blobStore();
+                BlobContainer container =
+                    blobStore.blobContainer(repository.basePath().add("indices").add(name));
+                for (String file : files) {
+                    int size = randomIntBetween(0, 10);
+                    totalSize.addAndGet(size);
+                    container.writeBlob(file, new ByteArrayInputStream(new byte[size]), size, false);
+                }
+                future.onResponse(null);
+            }
+        });
+        future.get();
+        return totalSize.get();
+    }
+
+    public static void assertCorruptionVisible(BlobStoreRepository repository, Map<String, Set<String>> indexToFiles) {
+        final PlainActionFuture<Boolean> future = PlainActionFuture.newFuture();
+        repository.threadPool().generic().execute(new ActionRunnable<>(future) {
+            @Override
+            protected void doRun() throws Exception {
+                final BlobStore blobStore = repository.blobStore();
+                for (String index : indexToFiles.keySet()) {
+                    if (blobStore.blobContainer(repository.basePath().add("indices"))
+                        .children().containsKey(index) == false) {
+                        future.onResponse(false);
+                        return;
+                    }
+                    for (String file : indexToFiles.get(index)) {
+                        if (blobStore.blobContainer(repository.basePath().add("indices").add(index))
+                            .blobExists(file) == false) {
+                            future.onResponse(false);
+                            return;
+                        }
+                    }
+                }
+                future.onResponse(true);
+            }
+        });
+        assertTrue(future.actionGet());
+    }
+
+    public static void assertBlobsByPrefix(BlobStoreRepository repository, BlobPath path, String prefix, Map<String, BlobMetaData> blobs) {
+        final PlainActionFuture<Map<String, BlobMetaData>> future = PlainActionFuture.newFuture();
+        repository.threadPool().generic().execute(new ActionRunnable<>(future) {
+            @Override
+            protected void doRun() throws Exception {
+                final BlobStore blobStore = repository.blobStore();
+                future.onResponse(blobStore.blobContainer(path).listBlobsByPrefix(prefix));
+            }
+        });
+        Map<String, BlobMetaData> foundBlobs = future.actionGet();
+        if (blobs.isEmpty()) {
+            assertThat(foundBlobs.keySet(), empty());
+        } else {
+            assertThat(foundBlobs.keySet(), containsInAnyOrder(blobs.keySet().toArray(Strings.EMPTY_ARRAY)));
+            for (Map.Entry<String, BlobMetaData> entry : foundBlobs.entrySet()) {
+                assertEquals(entry.getValue().length(), blobs.get(entry.getKey()).length());
+            }
+        }
+    }
 }

x-pack/snapshot-tool/build.gradle

@@ -0,0 +1,159 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+import java.nio.file.Files
+import java.nio.file.Paths
+import org.elasticsearch.gradle.ElasticsearchDistribution
+
+apply plugin: 'elasticsearch.build'
+apply plugin: 'elasticsearch.test.fixtures'
+
+dependencies {
+  compile project(":server")
+  compile project(":libs:elasticsearch-cli")
+  compile "com.amazonaws:aws-java-sdk-s3:${versions.aws}"
+  compile "com.amazonaws:aws-java-sdk-core:${versions.aws}"
+  compile "com.amazonaws:jmespath-java:${versions.aws}"
+  compile "org.apache.httpcomponents:httpclient:${versions.httpclient}"
+  compile "org.apache.httpcomponents:httpcore:${versions.httpcore}"
+  compile "commons-logging:commons-logging:${versions.commonslogging}"
+  compile "commons-codec:commons-codec:${versions.commonscodec}"
+  compile "org.apache.logging.log4j:log4j-1.2-api:${versions.log4j}"
+  compile "com.fasterxml.jackson.core:jackson-core:${versions.jackson}"
+  compile 'com.fasterxml.jackson.core:jackson-databind:2.8.11.3'
+  compile "com.fasterxml.jackson.core:jackson-annotations:${versions.jackson}"
+  testCompile project(":test:framework")
+  testCompile project(":plugins:repository-s3")
+
+  // HACK: javax.xml.bind was removed from default modules in java 9, so we pull the api in here,
+  // and whitelist this hack in JarHell
+  compile 'javax.xml.bind:jaxb-api:2.2.2'
+}
+
+dependencyLicenses {
+  mapping from: /aws-java-sdk-.*/, to: 'aws-java-sdk'
+  mapping from: /jmespath-java.*/, to: 'aws-java-sdk'
+  mapping from: /jackson-.*/, to: 'jackson'
+  mapping from: /jaxb-.*/, to: 'jaxb'
+}
+
+test {
+  // these are tested explicitly in separate test tasks
+  exclude '**/S3CleanupTests.class'
+}
+
+// Disabled to quiet the testing convention check since we only run third party tests
+test.enabled = false
+
+String s3PermanentAccessKey = 's3_integration_test_permanent_access_key'
+String s3PermanentSecretKey = 's3_integration_test_permanent_secret_key'
+String s3PermanentBucket = 'permanent-bucket-test'
+String s3PermanentBasePath = 'integration_test'
+
+task thirdPartyTest(type: Test) {
+  include '**/S3CleanupTests.class'
+  systemProperty 'tests.security.manager', 'false'
+  systemProperty 'test.s3.account', s3PermanentAccessKey
+  systemProperty 'test.s3.key', s3PermanentSecretKey
+  systemProperty 'test.s3.bucket', s3PermanentBucket
+  systemProperty 'test.s3.base', s3PermanentBasePath
+}
+
+task writeDockerFile {
+  File minioDockerfile = new File("${project.buildDir}/minio-docker/Dockerfile")
+  outputs.file(minioDockerfile)
+  doLast {
+    minioDockerfile.parentFile.mkdirs()
+    minioDockerfile.text = 
+            "FROM minio/minio:RELEASE.2019-01-23T23-18-58Z\n" +
+            "RUN mkdir -p /minio/data/${s3PermanentBucket}\n" +
+            "ENV MINIO_ACCESS_KEY ${s3PermanentAccessKey}\n" +
+            "ENV MINIO_SECRET_KEY ${s3PermanentSecretKey}"
+  }
+}
+
+preProcessFixture {
+  dependsOn(writeDockerFile)
+}
+
+def minioAddress = {
+  int minioPort = postProcessFixture.ext."test.fixtures.minio-fixture.tcp.9000"
+  assert minioPort > 0
+  'http://127.0.0.1:' + minioPort
+}
+
+thirdPartyTest {
+  dependsOn tasks.postProcessFixture
+  nonInputProperties.systemProperty 'test.s3.endpoint', "${ -> minioAddress.call() }"
+}
+
+task unpackArchive(dependsOn: tasks.assemble, type: Copy) {
+  from tarTree("${project.buildDir}/snapshot-tool-${project.version}.tgz")
+  into "${project.buildDir}"
+}
+
+task smokeTest(type: Exec) {
+  dependsOn unpackArchive
+  onlyIf { ElasticsearchDistribution.CURRENT_PLATFORM != ElasticsearchDistribution.Platform.WINDOWS }
+  commandLine "${project.buildDir}/snapshot-tool-${project.version}/bin/elasticsearch-snapshot", "-h"
+}
+
+check.dependsOn(thirdPartyTest)
+check.dependsOn(smokeTest)
+
+def vendorPath = Paths.get("${project.buildDir}/libs/vendor")
+
+task copyRuntimeLibs(type: Copy) {
+  doFirst {
+    Files.createDirectories(vendorPath)
+  }
+  into vendorPath.toString()
+  from configurations.compile, configurations.runtime
+}
+
+task buildTarArchive(dependsOn: copyRuntimeLibs, type: Tar) {
+  compression Compression.GZIP
+  archiveBaseName.set('snapshot-tool')
+  destinationDirectory.set(project.buildDir)
+  into "snapshot-tool-${version}", {
+    into "bin", {
+      from file("${project.projectDir}/src/bin")
+    }
+    into "libs", {
+      from jar.getArchiveFile()
+      from file("${project.buildDir}/libs")
+    }
+  }
+}
+
+assemble.dependsOn(buildTarArchive)
+
+thirdPartyAudit.ignoreMissingClasses (
+  // classes are missing
+  'javax.activation.DataHandler',
+  'javax.servlet.ServletContextEvent',
+  'javax.servlet.ServletContextListener',
+  'org.apache.avalon.framework.logger.Logger',
+  'org.apache.log.Hierarchy',
+  'org.apache.log.Logger',
+  'software.amazon.ion.IonReader',
+  'software.amazon.ion.IonSystem',
+  'software.amazon.ion.IonType',
+  'software.amazon.ion.IonWriter',
+  'software.amazon.ion.Timestamp',
+  'software.amazon.ion.system.IonBinaryWriterBuilder',
+  'software.amazon.ion.system.IonSystemBuilder',
+  'software.amazon.ion.system.IonTextWriterBuilder',
+  'software.amazon.ion.system.IonWriterBuilder',
+  // We don't use the kms dependency
+  'com.amazonaws.services.kms.AWSKMS',
+  'com.amazonaws.services.kms.AWSKMSClient',
+  'com.amazonaws.services.kms.model.DecryptRequest',
+  'com.amazonaws.services.kms.model.DecryptResult',
+  'com.amazonaws.services.kms.model.EncryptRequest',
+  'com.amazonaws.services.kms.model.EncryptResult',
+  'com.amazonaws.services.kms.model.GenerateDataKeyRequest',
+  'com.amazonaws.services.kms.model.GenerateDataKeyResult'
+)

x-pack/snapshot-tool/docker-compose.yml

@@ -0,0 +1,9 @@
+version: '3'
+services:
+  minio-fixture:
+    build:
+      context: ./build/minio-docker
+      dockerfile: Dockerfile
+    ports:
+      - "9000"
+    command: ["server", "/minio/data"]

x-pack/snapshot-tool/licenses/aws-java-sdk-LICENSE.txt

@@ -0,0 +1,63 @@
+Apache License
+Version 2.0, January 2004
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+"License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document.
+
+"Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License.
+
+"Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity.
+
+"You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License.
+
+"Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files.
+
+"Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and conversions to other media types.
+
+"Work" shall mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below).
+
+"Derivative Works" shall mean any work, whether in Source or Object form, that is based on (or derived from) the Work and for which the editorial revisions, annotations, elaborations, or other modifications represent, as a whole, an original work of authorship. For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof.
+
+"Contribution" shall mean any work of authorship, including the original version of the Work and any modifications or additions to that Work or Derivative Works thereof, that is intentionally submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or Legal Entity authorized to submit on behalf of the copyright owner. For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication sent to the Licensor or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by the copyright owner as "Not a Contribution."
+
+"Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution has been received by Licensor and subsequently incorporated within the Work.
+
+2. Grant of Copyright License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form.
+
+3. Grant of Patent License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims licensable by such Contributor that are necessarily infringed by their Contribution(s) alone or by combination of their Contribution(s) with the Work to which such Contribution(s) was submitted. If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated within the Work constitutes direct or contributory patent infringement, then any patent licenses granted to You under this License for that Work shall terminate as of the date such litigation is filed.
+
+4. Redistribution. You may reproduce and distribute copies of the Work or Derivative Works thereof in any medium, with or without modifications, and in Source or Object form, provided that You meet the following conditions:
+
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+You may add Your own copyright statement to Your modifications and may provide additional or different license terms and conditions for use, reproduction, or distribution of Your modifications, or for any such Derivative Works as a whole, provided Your use, reproduction, and distribution of the Work otherwise complies with the conditions stated in this License.
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+5. Submission of Contributions. Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file.
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+7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
+
+Note: Other license terms may apply to certain, identified software files contained within or distributed with the accompanying software if such terms are included in the directory containing the accompanying software. Such other license terms will then apply in lieu of the terms of the software license above.
+
+JSON processing code subject to the JSON License from JSON.org:
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+The Software shall be used for Good, not Evil.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

x-pack/snapshot-tool/licenses/aws-java-sdk-NOTICE.txt

@@ -0,0 +1,15 @@
+AWS SDK for Java
+Copyright 2010-2014 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+
+This product includes software developed by
+Amazon Technologies, Inc (http://www.amazon.com/).
+
+**********************
+THIRD PARTY COMPONENTS
+**********************
+This software includes third party software subject to the following copyrights:
+- XML parsing and utility functions from JetS3t - Copyright 2006-2009 James Murty.
+- JSON parsing and utility functions from JSON.org - Copyright 2002 JSON.org.
+- PKCS#1 PEM encoded private key parsing and utility functions from oauth.googlecode.com - Copyright 1998-2010 AOL Inc.
+
+The licenses for these third party components are included in LICENSE.txt

x-pack/snapshot-tool/licenses/aws-java-sdk-core-1.11.562.jar.sha1

@@ -0,0 +1 @@
+b5fc47ec1b5afe180f5ebb4eda755acdca7a20ae

x-pack/snapshot-tool/licenses/aws-java-sdk-s3-1.11.562.jar.sha1

@@ -0,0 +1 @@
+1712c878f7e9483ceac1eb2356a9457a3c8df03e

x-pack/snapshot-tool/licenses/commons-codec-1.11.jar.sha1

@@ -0,0 +1 @@
+3acb4705652e16236558f0f4f2192cc33c3bd189

x-pack/snapshot-tool/licenses/commons-codec-LICENSE.txt

@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

x-pack/snapshot-tool/licenses/commons-codec-NOTICE.txt

@@ -0,0 +1,17 @@
+Apache Commons Codec
+Copyright 2002-2015 The Apache Software Foundation
+
+This product includes software developed at
+The Apache Software Foundation (http://www.apache.org/).
+
+src/test/org/apache/commons/codec/language/DoubleMetaphoneTest.java
+contains test data from http://aspell.net/test/orig/batch0.tab.
+Copyright (C) 2002 Kevin Atkinson (kevina@gnu.org)
+
+===============================================================================
+
+The content of package org.apache.commons.codec.language.bm has been translated
+from the original php source code available at http://stevemorse.org/phoneticinfo.htm
+with permission from the original authors.
+Original source copyright:
+Copyright (c) 2008 Alexander Beider & Stephen P. Morse.

x-pack/snapshot-tool/licenses/commons-logging-1.1.3.jar.sha1

@@ -0,0 +1 @@
+f6f66e966c70a83ffbdb6f17a0919eaf7c8aca7f

x-pack/snapshot-tool/licenses/commons-logging-LICENSE.txt

@@ -0,0 +1,202 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+

x-pack/snapshot-tool/licenses/commons-logging-NOTICE.txt

@@ -0,0 +1,5 @@
+Apache Commons CLI
+Copyright 2001-2009 The Apache Software Foundation
+
+This product includes software developed by
+The Apache Software Foundation (http://www.apache.org/).

x-pack/snapshot-tool/licenses/httpclient-4.5.8.jar.sha1

@@ -0,0 +1 @@
+c27c9d6f15435dc2b6947112027b418b0eef32b9

x-pack/snapshot-tool/licenses/httpclient-LICENSE.txt

@@ -0,0 +1,558 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+=========================================================================
+
+This project includes Public Suffix List copied from
+<https://publicsuffix.org/list/effective_tld_names.dat>
+licensed under the terms of the Mozilla Public License, v. 2.0
+
+Full license text: <http://mozilla.org/MPL/2.0/>
+
+Mozilla Public License Version 2.0
+==================================
+
+1. Definitions
+--------------
+
+1.1. "Contributor"
+    means each individual or legal entity that creates, contributes to
+    the creation of, or owns Covered Software.
+
+1.2. "Contributor Version"
+    means the combination of the Contributions of others (if any) used
+    by a Contributor and that particular Contributor's Contribution.
+
+1.3. "Contribution"
+    means Covered Software of a particular Contributor.
+
+1.4. "Covered Software"
+    means Source Code Form to which the initial Contributor has attached
+    the notice in Exhibit A, the Executable Form of such Source Code
+    Form, and Modifications of such Source Code Form, in each case
+    including portions thereof.
+
+1.5. "Incompatible With Secondary Licenses"
+    means
+
+    (a) that the initial Contributor has attached the notice described
+        in Exhibit B to the Covered Software; or
+
+    (b) that the Covered Software was made available under the terms of
+        version 1.1 or earlier of the License, but not also under the
+        terms of a Secondary License.
+
+1.6. "Executable Form"
+    means any form of the work other than Source Code Form.
+
+1.7. "Larger Work"
+    means a work that combines Covered Software with other material, in
+    a separate file or files, that is not Covered Software.
+
+1.8. "License"
+    means this document.
+
+1.9. "Licensable"
+    means having the right to grant, to the maximum extent possible,
+    whether at the time of the initial grant or subsequently, any and
+    all of the rights conveyed by this License.
+
+1.10. "Modifications"
+    means any of the following:
+
+    (a) any file in Source Code Form that results from an addition to,
+        deletion from, or modification of the contents of Covered
+        Software; or
+
+    (b) any new file in Source Code Form that contains any Covered
+        Software.
+
+1.11. "Patent Claims" of a Contributor
+    means any patent claim(s), including without limitation, method,
+    process, and apparatus claims, in any patent Licensable by such
+    Contributor that would be infringed, but for the grant of the
+    License, by the making, using, selling, offering for sale, having
+    made, import, or transfer of either its Contributions or its
+    Contributor Version.
+
+1.12. "Secondary License"
+    means either the GNU General Public License, Version 2.0, the GNU
+    Lesser General Public License, Version 2.1, the GNU Affero General
+    Public License, Version 3.0, or any later versions of those
+    licenses.
+
+1.13. "Source Code Form"
+    means the form of the work preferred for making modifications.
+
+1.14. "You" (or "Your")
+    means an individual or a legal entity exercising rights under this
+    License. For legal entities, "You" includes any entity that
+    controls, is controlled by, or is under common control with You. For
+    purposes of this definition, "control" means (a) the power, direct
+    or indirect, to cause the direction or management of such entity,
+    whether by contract or otherwise, or (b) ownership of more than
+    fifty percent (50%) of the outstanding shares or beneficial
+    ownership of such entity.
+
+2. License Grants and Conditions
+--------------------------------
+
+2.1. Grants
+
+Each Contributor hereby grants You a world-wide, royalty-free,
+non-exclusive license:
+
+(a) under intellectual property rights (other than patent or trademark)
+    Licensable by such Contributor to use, reproduce, make available,
+    modify, display, perform, distribute, and otherwise exploit its
+    Contributions, either on an unmodified basis, with Modifications, or
+    as part of a Larger Work; and
+
+(b) under Patent Claims of such Contributor to make, use, sell, offer
+    for sale, have made, import, and otherwise transfer either its
+    Contributions or its Contributor Version.
+
+2.2. Effective Date
+
+The licenses granted in Section 2.1 with respect to any Contribution
+become effective for each Contribution on the date the Contributor first
+distributes such Contribution.
+
+2.3. Limitations on Grant Scope
+
+The licenses granted in this Section 2 are the only rights granted under
+this License. No additional rights or licenses will be implied from the
+distribution or licensing of Covered Software under this License.
+Notwithstanding Section 2.1(b) above, no patent license is granted by a
+Contributor:
+
+(a) for any code that a Contributor has removed from Covered Software;
+    or
+
+(b) for infringements caused by: (i) Your and any other third party's
+    modifications of Covered Software, or (ii) the combination of its
+    Contributions with other software (except as part of its Contributor
+    Version); or
+
+(c) under Patent Claims infringed by Covered Software in the absence of
+    its Contributions.
+
+This License does not grant any rights in the trademarks, service marks,
+or logos of any Contributor (except as may be necessary to comply with
+the notice requirements in Section 3.4).
+
+2.4. Subsequent Licenses
+
+No Contributor makes additional grants as a result of Your choice to
+distribute the Covered Software under a subsequent version of this
+License (see Section 10.2) or under the terms of a Secondary License (if
+permitted under the terms of Section 3.3).
+
+2.5. Representation
+
+Each Contributor represents that the Contributor believes its
+Contributions are its original creation(s) or it has sufficient rights
+to grant the rights to its Contributions conveyed by this License.
+
+2.6. Fair Use
+
+This License is not intended to limit any rights You have under
+applicable copyright doctrines of fair use, fair dealing, or other
+equivalents.
+
+2.7. Conditions
+
+Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
+in Section 2.1.
+
+3. Responsibilities
+-------------------
+
+3.1. Distribution of Source Form
+
+All distribution of Covered Software in Source Code Form, including any
+Modifications that You create or to which You contribute, must be under
+the terms of this License. You must inform recipients that the Source
+Code Form of the Covered Software is governed by the terms of this
+License, and how they can obtain a copy of this License. You may not
+attempt to alter or restrict the recipients' rights in the Source Code
+Form.
+
+3.2. Distribution of Executable Form
+
+If You distribute Covered Software in Executable Form then:
+
+(a) such Covered Software must also be made available in Source Code
+    Form, as described in Section 3.1, and You must inform recipients of
+    the Executable Form how they can obtain a copy of such Source Code
+    Form by reasonable means in a timely manner, at a charge no more
+    than the cost of distribution to the recipient; and
+
+(b) You may distribute such Executable Form under the terms of this
+    License, or sublicense it under different terms, provided that the
+    license for the Executable Form does not attempt to limit or alter
+    the recipients' rights in the Source Code Form under this License.
+
+3.3. Distribution of a Larger Work
+
+You may create and distribute a Larger Work under terms of Your choice,
+provided that You also comply with the requirements of this License for
+the Covered Software. If the Larger Work is a combination of Covered
+Software with a work governed by one or more Secondary Licenses, and the
+Covered Software is not Incompatible With Secondary Licenses, this
+License permits You to additionally distribute such Covered Software
+under the terms of such Secondary License(s), so that the recipient of
+the Larger Work may, at their option, further distribute the Covered
+Software under the terms of either this License or such Secondary
+License(s).
+
+3.4. Notices
+
+You may not remove or alter the substance of any license notices
+(including copyright notices, patent notices, disclaimers of warranty,
+or limitations of liability) contained within the Source Code Form of
+the Covered Software, except that You may alter any license notices to
+the extent required to remedy known factual inaccuracies.
+
+3.5. Application of Additional Terms
+
+You may choose to offer, and to charge a fee for, warranty, support,
+indemnity or liability obligations to one or more recipients of Covered
+Software. However, You may do so only on Your own behalf, and not on
+behalf of any Contributor. You must make it absolutely clear that any
+such warranty, support, indemnity, or liability obligation is offered by
+You alone, and You hereby agree to indemnify every Contributor for any
+liability incurred by such Contributor as a result of warranty, support,
+indemnity or liability terms You offer. You may include additional
+disclaimers of warranty and limitations of liability specific to any
+jurisdiction.
+
+4. Inability to Comply Due to Statute or Regulation
+---------------------------------------------------
+
+If it is impossible for You to comply with any of the terms of this
+License with respect to some or all of the Covered Software due to
+statute, judicial order, or regulation then You must: (a) comply with
+the terms of this License to the maximum extent possible; and (b)
+describe the limitations and the code they affect. Such description must
+be placed in a text file included with all distributions of the Covered
+Software under this License. Except to the extent prohibited by statute
+or regulation, such description must be sufficiently detailed for a
+recipient of ordinary skill to be able to understand it.
+
+5. Termination
+--------------
+
+5.1. The rights granted under this License will terminate automatically
+if You fail to comply with any of its terms. However, if You become
+compliant, then the rights granted under this License from a particular
+Contributor are reinstated (a) provisionally, unless and until such
+Contributor explicitly and finally terminates Your grants, and (b) on an
+ongoing basis, if such Contributor fails to notify You of the
+non-compliance by some reasonable means prior to 60 days after You have
+come back into compliance. Moreover, Your grants from a particular
+Contributor are reinstated on an ongoing basis if such Contributor
+notifies You of the non-compliance by some reasonable means, this is the
+first time You have received notice of non-compliance with this License
+from such Contributor, and You become compliant prior to 30 days after
+Your receipt of the notice.
+
+5.2. If You initiate litigation against any entity by asserting a patent
+infringement claim (excluding declaratory judgment actions,
+counter-claims, and cross-claims) alleging that a Contributor Version
+directly or indirectly infringes any patent, then the rights granted to
+You by any and all Contributors for the Covered Software under Section
+2.1 of this License shall terminate.
+
+5.3. In the event of termination under Sections 5.1 or 5.2 above, all
+end user license agreements (excluding distributors and resellers) which
+have been validly granted by You or Your distributors under this License
+prior to termination shall survive termination.
+
+************************************************************************
+*                                                                      *
+*  6. Disclaimer of Warranty                                           *
+*  -------------------------                                           *
+*                                                                      *
+*  Covered Software is provided under this License on an "as is"       *
+*  basis, without warranty of any kind, either expressed, implied, or  *
+*  statutory, including, without limitation, warranties that the       *
+*  Covered Software is free of defects, merchantable, fit for a        *
+*  particular purpose or non-infringing. The entire risk as to the     *
+*  quality and performance of the Covered Software is with You.        *
+*  Should any Covered Software prove defective in any respect, You     *
+*  (not any Contributor) assume the cost of any necessary servicing,   *
+*  repair, or correction. This disclaimer of warranty constitutes an   *
+*  essential part of this License. No use of any Covered Software is   *
+*  authorized under this License except under this disclaimer.         *
+*                                                                      *
+************************************************************************
+
+************************************************************************
+*                                                                      *
+*  7. Limitation of Liability                                          *
+*  --------------------------                                          *
+*                                                                      *
+*  Under no circumstances and under no legal theory, whether tort      *
+*  (including negligence), contract, or otherwise, shall any           *
+*  Contributor, or anyone who distributes Covered Software as          *
+*  permitted above, be liable to You for any direct, indirect,         *
+*  special, incidental, or consequential damages of any character      *
+*  including, without limitation, damages for lost profits, loss of    *
+*  goodwill, work stoppage, computer failure or malfunction, or any    *
+*  and all other commercial damages or losses, even if such party      *
+*  shall have been informed of the possibility of such damages. This   *
+*  limitation of liability shall not apply to liability for death or   *
+*  personal injury resulting from such party's negligence to the       *
+*  extent applicable law prohibits such limitation. Some               *
+*  jurisdictions do not allow the exclusion or limitation of           *
+*  incidental or consequential damages, so this exclusion and          *
+*  limitation may not apply to You.                                    *
+*                                                                      *
+************************************************************************
+
+8. Litigation
+-------------
+
+Any litigation relating to this License may be brought only in the
+courts of a jurisdiction where the defendant maintains its principal
+place of business and such litigation shall be governed by laws of that
+jurisdiction, without reference to its conflict-of-law provisions.
+Nothing in this Section shall prevent a party's ability to bring
+cross-claims or counter-claims.
+
+9. Miscellaneous
+----------------
+
+This License represents the complete agreement concerning the subject
+matter hereof. If any provision of this License is held to be
+unenforceable, such provision shall be reformed only to the extent
+necessary to make it enforceable. Any law or regulation which provides
+that the language of a contract shall be construed against the drafter
+shall not be used to construe this License against a Contributor.
+
+10. Versions of the License
+---------------------------
+
+10.1. New Versions
+
+Mozilla Foundation is the license steward. Except as provided in Section
+10.3, no one other than the license steward has the right to modify or
+publish new versions of this License. Each version will be given a
+distinguishing version number.
+
+10.2. Effect of New Versions
+
+You may distribute the Covered Software under the terms of the version
+of the License under which You originally received the Covered Software,
+or under the terms of any subsequent version published by the license
+steward.
+
+10.3. Modified Versions
+
+If you create software not governed by this License, and you want to
+create a new license for such software, you may create and use a
+modified version of this License if you rename the license and remove
+any references to the name of the license steward (except to note that
+such modified license differs from this License).
+
+10.4. Distributing Source Code Form that is Incompatible With Secondary
+Licenses
+
+If You choose to distribute Source Code Form that is Incompatible With
+Secondary Licenses under the terms of this version of the License, the
+notice described in Exhibit B of this License must be attached.
+
+Exhibit A - Source Code Form License Notice
+-------------------------------------------
+
+  This Source Code Form is subject to the terms of the Mozilla Public
+  License, v. 2.0. If a copy of the MPL was not distributed with this
+  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular
+file, then You may include the notice in a location (such as a LICENSE
+file in a relevant directory) where a recipient would be likely to look
+for such a notice.
+
+You may add additional accurate notices of copyright ownership.
+
+Exhibit B - "Incompatible With Secondary Licenses" Notice
+---------------------------------------------------------
+
+  This Source Code Form is "Incompatible With Secondary Licenses", as
+  defined by the Mozilla Public License, v. 2.0.

x-pack/snapshot-tool/licenses/httpclient-NOTICE.txt

@@ -0,0 +1,5 @@
+Apache HttpComponents Client
+Copyright 1999-2015 The Apache Software Foundation
+
+This product includes software developed at
+The Apache Software Foundation (http://www.apache.org/).

x-pack/snapshot-tool/licenses/httpcore-4.4.11.jar.sha1

@@ -0,0 +1 @@
+de748cf874e4e193b42eceea9fe5574fabb9d4df

x-pack/snapshot-tool/licenses/httpcore-LICENSE.txt

@@ -0,0 +1,241 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+=========================================================================
+
+This project contains annotations in the package org.apache.http.annotation
+which are derived from JCIP-ANNOTATIONS
+Copyright (c) 2005 Brian Goetz and Tim Peierls.
+See http://www.jcip.net and the Creative Commons Attribution License
+(http://creativecommons.org/licenses/by/2.5)
+Full text: http://creativecommons.org/licenses/by/2.5/legalcode
+
+License
+
+THE WORK (AS DEFINED BELOW) IS PROVIDED UNDER THE TERMS OF THIS CREATIVE COMMONS PUBLIC LICENSE ("CCPL" OR "LICENSE"). THE WORK IS PROTECTED BY COPYRIGHT AND/OR OTHER APPLICABLE LAW. ANY USE OF THE WORK OTHER THAN AS AUTHORIZED UNDER THIS LICENSE OR COPYRIGHT LAW IS PROHIBITED.
+
+BY EXERCISING ANY RIGHTS TO THE WORK PROVIDED HERE, YOU ACCEPT AND AGREE TO BE BOUND BY THE TERMS OF THIS LICENSE. THE LICENSOR GRANTS YOU THE RIGHTS CONTAINED HERE IN CONSIDERATION OF YOUR ACCEPTANCE OF SUCH TERMS AND CONDITIONS.
+
+1. Definitions
+
+    "Collective Work" means a work, such as a periodical issue, anthology or encyclopedia, in which the Work in its entirety in unmodified form, along with a number of other contributions, constituting separate and independent works in themselves, are assembled into a collective whole. A work that constitutes a Collective Work will not be considered a Derivative Work (as defined below) for the purposes of this License.
+    "Derivative Work" means a work based upon the Work or upon the Work and other pre-existing works, such as a translation, musical arrangement, dramatization, fictionalization, motion picture version, sound recording, art reproduction, abridgment, condensation, or any other form in which the Work may be recast, transformed, or adapted, except that a work that constitutes a Collective Work will not be considered a Derivative Work for the purpose of this License. For the avoidance of doubt, where the Work is a musical composition or sound recording, the synchronization of the Work in timed-relation with a moving image ("synching") will be considered a Derivative Work for the purpose of this License.
+    "Licensor" means the individual or entity that offers the Work under the terms of this License.
+    "Original Author" means the individual or entity who created the Work.
+    "Work" means the copyrightable work of authorship offered under the terms of this License.
+    "You" means an individual or entity exercising rights under this License who has not previously violated the terms of this License with respect to the Work, or who has received express permission from the Licensor to exercise rights under this License despite a previous violation.
+
+2. Fair Use Rights. Nothing in this license is intended to reduce, limit, or restrict any rights arising from fair use, first sale or other limitations on the exclusive rights of the copyright owner under copyright law or other applicable laws.
+
+3. License Grant. Subject to the terms and conditions of this License, Licensor hereby grants You a worldwide, royalty-free, non-exclusive, perpetual (for the duration of the applicable copyright) license to exercise the rights in the Work as stated below:
+
+    to reproduce the Work, to incorporate the Work into one or more Collective Works, and to reproduce the Work as incorporated in the Collective Works;
+    to create and reproduce Derivative Works;
+    to distribute copies or phonorecords of, display publicly, perform publicly, and perform publicly by means of a digital audio transmission the Work including as incorporated in Collective Works;
+    to distribute copies or phonorecords of, display publicly, perform publicly, and perform publicly by means of a digital audio transmission Derivative Works.
+
+    For the avoidance of doubt, where the work is a musical composition:
+        Performance Royalties Under Blanket Licenses. Licensor waives the exclusive right to collect, whether individually or via a performance rights society (e.g. ASCAP, BMI, SESAC), royalties for the public performance or public digital performance (e.g. webcast) of the Work.
+        Mechanical Rights and Statutory Royalties. Licensor waives the exclusive right to collect, whether individually or via a music rights agency or designated agent (e.g. Harry Fox Agency), royalties for any phonorecord You create from the Work ("cover version") and distribute, subject to the compulsory license created by 17 USC Section 115 of the US Copyright Act (or the equivalent in other jurisdictions).
+    Webcasting Rights and Statutory Royalties. For the avoidance of doubt, where the Work is a sound recording, Licensor waives the exclusive right to collect, whether individually or via a performance-rights society (e.g. SoundExchange), royalties for the public digital performance (e.g. webcast) of the Work, subject to the compulsory license created by 17 USC Section 114 of the US Copyright Act (or the equivalent in other jurisdictions).
+
+The above rights may be exercised in all media and formats whether now known or hereafter devised. The above rights include the right to make such modifications as are technically necessary to exercise the rights in other media and formats. All rights not expressly granted by Licensor are hereby reserved.
+
+4. Restrictions.The license granted in Section 3 above is expressly made subject to and limited by the following restrictions:
+
+    You may distribute, publicly display, publicly perform, or publicly digitally perform the Work only under the terms of this License, and You must include a copy of, or the Uniform Resource Identifier for, this License with every copy or phonorecord of the Work You distribute, publicly display, publicly perform, or publicly digitally perform. You may not offer or impose any terms on the Work that alter or restrict the terms of this License or the recipients' exercise of the rights granted hereunder. You may not sublicense the Work. You must keep intact all notices that refer to this License and to the disclaimer of warranties. You may not distribute, publicly display, publicly perform, or publicly digitally perform the Work with any technological measures that control access or use of the Work in a manner inconsistent with the terms of this License Agreement. The above applies to the Work as incorporated in a Collective Work, but this does not require the Collective Work apart from the Work itself to be made subject to the terms of this License. If You create a Collective Work, upon notice from any Licensor You must, to the extent practicable, remove from the Collective Work any credit as required by clause 4(b), as requested. If You create a Derivative Work, upon notice from any Licensor You must, to the extent practicable, remove from the Derivative Work any credit as required by clause 4(b), as requested.
+    If you distribute, publicly display, publicly perform, or publicly digitally perform the Work or any Derivative Works or Collective Works, You must keep intact all copyright notices for the Work and provide, reasonable to the medium or means You are utilizing: (i) the name of the Original Author (or pseudonym, if applicable) if supplied, and/or (ii) if the Original Author and/or Licensor designate another party or parties (e.g. a sponsor institute, publishing entity, journal) for attribution in Licensor's copyright notice, terms of service or by other reasonable means, the name of such party or parties; the title of the Work if supplied; to the extent reasonably practicable, the Uniform Resource Identifier, if any, that Licensor specifies to be associated with the Work, unless such URI does not refer to the copyright notice or licensing information for the Work; and in the case of a Derivative Work, a credit identifying the use of the Work in the Derivative Work (e.g., "French translation of the Work by Original Author," or "Screenplay based on original Work by Original Author"). Such credit may be implemented in any reasonable manner; provided, however, that in the case of a Derivative Work or Collective Work, at a minimum such credit will appear where any other comparable authorship credit appears and in a manner at least as prominent as such other comparable authorship credit.
+
+5. Representations, Warranties and Disclaimer
+
+UNLESS OTHERWISE MUTUALLY AGREED TO BY THE PARTIES IN WRITING, LICENSOR OFFERS THE WORK AS-IS AND MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND CONCERNING THE WORK, EXPRESS, IMPLIED, STATUTORY OR OTHERWISE, INCLUDING, WITHOUT LIMITATION, WARRANTIES OF TITLE, MERCHANTIBILITY, FITNESS FOR A PARTICULAR PURPOSE, NONINFRINGEMENT, OR THE ABSENCE OF LATENT OR OTHER DEFECTS, ACCURACY, OR THE PRESENCE OF ABSENCE OF ERRORS, WHETHER OR NOT DISCOVERABLE. SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OF IMPLIED WARRANTIES, SO SUCH EXCLUSION MAY NOT APPLY TO YOU.
+
+6. Limitation on Liability. EXCEPT TO THE EXTENT REQUIRED BY APPLICABLE LAW, IN NO EVENT WILL LICENSOR BE LIABLE TO YOU ON ANY LEGAL THEORY FOR ANY SPECIAL, INCIDENTAL, CONSEQUENTIAL, PUNITIVE OR EXEMPLARY DAMAGES ARISING OUT OF THIS LICENSE OR THE USE OF THE WORK, EVEN IF LICENSOR HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+7. Termination
+
+    This License and the rights granted hereunder will terminate automatically upon any breach by You of the terms of this License. Individuals or entities who have received Derivative Works or Collective Works from You under this License, however, will not have their licenses terminated provided such individuals or entities remain in full compliance with those licenses. Sections 1, 2, 5, 6, 7, and 8 will survive any termination of this License.
+    Subject to the above terms and conditions, the license granted here is perpetual (for the duration of the applicable copyright in the Work). Notwithstanding the above, Licensor reserves the right to release the Work under different license terms or to stop distributing the Work at any time; provided, however that any such election will not serve to withdraw this License (or any other license that has been, or is required to be, granted under the terms of this License), and this License will continue in full force and effect unless terminated as stated above.
+
+8. Miscellaneous
+
+    Each time You distribute or publicly digitally perform the Work or a Collective Work, the Licensor offers to the recipient a license to the Work on the same terms and conditions as the license granted to You under this License.
+    Each time You distribute or publicly digitally perform a Derivative Work, Licensor offers to the recipient a license to the original Work on the same terms and conditions as the license granted to You under this License.
+    If any provision of this License is invalid or unenforceable under applicable law, it shall not affect the validity or enforceability of the remainder of the terms of this License, and without further action by the parties to this agreement, such provision shall be reformed to the minimum extent necessary to make such provision valid and enforceable.
+    No term or provision of this License shall be deemed waived and no breach consented to unless such waiver or consent shall be in writing and signed by the party to be charged with such waiver or consent.
+    This License constitutes the entire agreement between the parties with respect to the Work licensed here. There are no understandings, agreements or representations with respect to the Work not specified here. Licensor shall not be bound by any additional provisions that may appear in any communication from You. This License may not be modified without the mutual written agreement of the Licensor and You.

x-pack/snapshot-tool/licenses/httpcore-NOTICE.txt

@@ -0,0 +1,8 @@
+Apache HttpComponents Core
+Copyright 2005-2014 The Apache Software Foundation
+
+This product includes software developed at
+The Apache Software Foundation (http://www.apache.org/).
+
+This project contains annotations derived from JCIP-ANNOTATIONS
+Copyright (c) 2005 Brian Goetz and Tim Peierls. See http://www.jcip.net

x-pack/snapshot-tool/licenses/jackson-LICENSE

@@ -0,0 +1,8 @@
+This copy of Jackson JSON processor streaming parser/generator is licensed under the
+Apache (Software) License, version 2.0 ("the License").
+See the License for details about distribution rights, and the
+specific rights regarding derivate works.
+
+You may obtain a copy of the License at:
+
+http://www.apache.org/licenses/LICENSE-2.0

x-pack/snapshot-tool/licenses/jackson-NOTICE

@@ -0,0 +1,20 @@
+# Jackson JSON processor
+
+Jackson is a high-performance, Free/Open Source JSON processing library.
+It was originally written by Tatu Saloranta (tatu.saloranta@iki.fi), and has
+been in development since 2007.
+It is currently developed by a community of developers, as well as supported
+commercially by FasterXML.com.
+
+## Licensing
+
+Jackson core and extension components may licensed under different licenses.
+To find the details that apply to this artifact see the accompanying LICENSE file.
+For more information, including possible other licensing options, contact
+FasterXML.com (http://fasterxml.com).
+
+## Credits
+
+A list of contributors may be found from CREDITS file, which is included
+in some artifacts (usually source distributions); but is always available
+from the source code management (SCM) system project uses.

x-pack/snapshot-tool/licenses/jackson-annotations-2.8.11.jar.sha1

@@ -0,0 +1 @@
+391de20b4e29cb3fb07d2454ace64be2c82ac91f

x-pack/snapshot-tool/licenses/jackson-core-2.8.11.jar.sha1

@@ -0,0 +1 @@
+876ead1db19f0c9e79c9789273a3ef8c6fd6c29b

x-pack/snapshot-tool/licenses/jackson-databind-2.8.11.3.jar.sha1

@@ -0,0 +1 @@
+844df5aba5a1a56e00905b165b12bb34116ee858

x-pack/snapshot-tool/licenses/jaxb-LICENSE.txt

@@ -0,0 +1,705 @@
+COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Version 1.0
+
+1. Definitions.
+
+   1.1. Contributor. means each individual or  entity  that  creates  or
+contributes to the creation of Modifications.
+
+   1.2. Contributor Version.  means  the  combination  of  the  Original
+Software,  prior  Modifications  used by a Contributor (if any), and the
+Modifications made by that particular Contributor.
+
+   1.3. Covered Software.  means  (a)  the  Original  Software,  or  (b)
+Modifications,  or  (c)  the  combination  of  files containing Original
+Software with files containing Modifications,  in  each  case  including
+portions thereof.
+
+   1.4. Executable. means the Covered Software in any  form  other  than
+Source Code.
+
+   1.5. Initial Developer. means the individual  or  entity  that  first
+makes Original Software available under this License.
+
+   1.6. Larger Work. means a work which  combines  Covered  Software  or
+portions thereof with code not governed by the terms of this License.
+
+   1.7. License. means this document.
+
+   1.8. Licensable. means having the right  to  grant,  to  the  maximum
+extent   possible,   whether  at  the  time  of  the  initial  grant  or
+subsequently acquired, any and all of the rights conveyed herein.
+
+   1.9. Modifications. means the Source Code and Executable form of  any
+of the following:
+
+        A. Any file that results from an addition to, deletion  from  or
+modification  of  the contents of a file containing Original Software or
+previous Modifications;
+
+        B. Any new file that contains any part of the Original  Software
+or previous Modification; or
+
+        C. Any new file that is contributed or otherwise made  available
+under the terms of this License.
+
+   1.10. Original Software. means the Source Code and Executable form of
+computer software code that is originally released under this License.
+
+   1.11.  Patent  Claims.  means  any  patent  claim(s),  now  owned  or
+hereafter  acquired,  including without limitation, method, process, and
+apparatus claims, in any patent Licensable by grantor.
+
+   1.12. Source Code. means (a) the common  form  of  computer  software
+code  in  which  modifications are made and (b) associated documentation
+included in or with such code.
+
+   1.13. You.  (or  .Your.)  means  an  individual  or  a  legal  entity
+exercising  rights  under,  and complying with all of the terms of, this
+License. For legal entities, .You. includes any entity  which  controls,
+is  controlled  by, or is under common control with You. For purposes of
+this definition, .control. means (a) the power, direct or  indirect,  to
+cause the direction or management of such entity, whether by contract or
+otherwise,  or  (b)  ownership  of  more than fifty percent (50%) of the
+outstanding shares or beneficial ownership of such entity.
+
+2. License Grants.
+
+      2.1. The Initial Developer Grant.
+
+      Conditioned upon  Your  compliance  with  Section  3.1  below  and
+subject  to  third  party  intellectual  property  claims,  the  Initial
+Developer hereby grants You a  world-wide,  royalty-free,  non-exclusive
+license:
+
+         (a) under intellectual property rights (other  than  patent  or
+trademark)  Licensable  by Initial Developer, to use, reproduce, modify,
+display, perform, sublicense and distribute the  Original  Software  (or
+portions  thereof),  with  or without Modifications, and/or as part of a
+Larger Work; and
+
+         (b) under Patent Claims  infringed  by  the  making,  using  or
+selling  of  Original Software, to make, have made, use, practice, sell,
+and offer for sale, and/or otherwise dispose of  the  Original  Software
+(or portions thereof).
+
+        (c)  The  licenses  granted  in  Sections  2.1(a)  and  (b)  are
+effective  on  the date Initial Developer first distributes or otherwise
+makes the Original Software available to a third party under  the  terms
+of this License.
+
+        (d) Notwithstanding Section 2.1(b) above, no patent  license  is
+granted: (1) for code that You delete from the Original Software, or (2)
+for  infringements  caused  by:  (i)  the  modification  of the Original
+Software, or (ii) the combination of the Original  Software  with  other
+software or devices.
+
+    2.2. Contributor Grant.
+
+    Conditioned upon Your compliance with Section 3.1 below and  subject
+to  third  party  intellectual  property claims, each Contributor hereby
+grants You a world-wide, royalty-free, non-exclusive license:
+
+        (a) under intellectual property rights  (other  than  patent  or
+trademark) Licensable by Contributor to use, reproduce, modify, display,
+perform,  sublicense  and  distribute  the Modifications created by such
+Contributor (or portions thereof), either on an unmodified  basis,  with
+other Modifications, as Covered Software and/or as part of a Larger Work;
+and
+
+        (b) under Patent Claims  infringed  by  the  making,  using,  or
+selling of Modifications made by that Contributor either alone and/or in
+combination   with   its   Contributor  Version  (or  portions  of  such
+combination), to make, use, sell, offer  for  sale,  have  made,  and/or
+otherwise  dispose  of:  (1)  Modifications made by that Contributor (or
+portions thereof); and (2) the combination of Modifications made by that
+Contributor  with  its  Contributor  Version  (or   portions   of   such
+combination).
+
+        (c) The licenses granted  in  Sections  2.2(a)  and  2.2(b)  are
+effective  on  the date Contributor first distributes or otherwise makes
+the Modifications available to a third party.
+
+        (d) Notwithstanding Section 2.2(b) above, no patent  license  is
+granted:  (1)  for  any  code  that  Contributor  has  deleted  from the
+Contributor Version; (2) for infringements caused by:  (i)  third  party
+modifications  of  Contributor  Version,  or  (ii)  the  combination  of
+Modifications made by that Contributor with other  software  (except  as
+part  of  the Contributor Version) or other devices; or (3) under Patent
+Claims infringed by Covered Software in  the  absence  of  Modifications
+made by that Contributor.
+
+3. Distribution Obligations.
+
+      3.1. Availability of Source Code.
+      Any  Covered  Software  that  You  distribute  or  otherwise  make
+available  in Executable form must also be made available in Source Code
+form and that Source Code form must be distributed only under the  terms
+of this License. You must include a copy of this License with every copy
+of  the  Source  Code  form  of  the  Covered Software You distribute or
+otherwise make available. You must inform recipients of any such Covered
+Software in Executable form as to  how  they  can  obtain  such  Covered
+Software  in  Source  Code  form  in a reasonable manner on or through a
+medium customarily used for software exchange.
+
+      3.2. Modifications.
+      The Modifications that You create or to which You  contribute  are
+governed  by  the  terms of this License. You represent that You believe
+Your  Modifications  are  Your  original  creation(s)  and/or  You  have
+sufficient rights to grant the rights conveyed by this License.
+
+      3.3. Required Notices.
+      You must include a notice  in  each  of  Your  Modifications  that
+identifies  You  as  the  Contributor  of  the Modification. You may not
+remove or alter any copyright, patent  or  trademark  notices  contained
+within  the  Covered  Software,  or  any  notices  of  licensing  or any
+descriptive text giving attribution to any Contributor  or  the  Initial
+Developer.
+
+      3.4. Application of Additional Terms.
+      You may not offer or impose any terms on any Covered  Software  in
+Source Code form that alters or restricts the applicable version of this
+License  or  the  recipients. rights hereunder. You may choose to offer,
+and to charge a fee  for,  warranty,  support,  indemnity  or  liability
+obligations  to one or more recipients of Covered Software. However, you
+may do so only on Your own behalf, and not  on  behalf  of  the  Initial
+Developer or any Contributor. You must make it absolutely clear that any
+such  warranty, support, indemnity or liability obligation is offered by
+You alone, and You hereby agree to indemnify the Initial  Developer  and
+every Contributor for any liability incurred by the Initial Developer or
+such  Contributor  as  a  result  of  warranty,  support,  indemnity  or
+liability terms You offer.
+
+      3.5. Distribution of Executable Versions.
+      You may distribute the Executable form  of  the  Covered  Software
+under  the terms of this License or under the terms of a license of Your
+choice, which may contain terms different from  this  License,  provided
+that  You  are in compliance with the terms of this License and that the
+license for the Executable form does not attempt to limit or  alter  the
+recipient.s  rights in the Source Code form from the rights set forth in
+this License. If You distribute the Covered Software in Executable  form
+under  a  different  license, You must make it absolutely clear that any
+terms which differ from this License are offered by You  alone,  not  by
+the  Initial Developer or Contributor. You hereby agree to indemnify the
+Initial Developer and every Contributor for any  liability  incurred  by
+the  Initial Developer or such Contributor as a result of any such terms
+You offer.
+
+      3.6. Larger Works.
+      You may create a Larger Work by combining  Covered  Software  with
+other  code not governed by the terms of this License and distribute the
+Larger Work as a single product. In such a case, You must make sure  the
+requirements of this License are fulfilled for the Covered Software.
+
+4. Versions of the License.
+
+      4.1. New Versions.
+      Sun Microsystems, Inc. is the  initial  license  steward  and  may
+publish  revised  and/or new versions of this License from time to time.
+Each version will be given a distinguishing version  number.  Except  as
+provided  in  Section 4.3, no one other than the license steward has the
+right to modify this License.
+
+      4.2. Effect of New Versions.
+      You may always continue to use, distribute or otherwise  make  the
+Covered Software available under the terms of the version of the License
+under which You originally received the Covered Software. If the Initial
+Developer includes a notice in the Original Software prohibiting it from
+being  distributed  or  otherwise  made  available  under any subsequent
+version of the  License,  You  must  distribute  and  make  the  Covered
+Software  available  under the terms of the version of the License under
+which You originally received the Covered Software. Otherwise,  You  may
+also  choose  to  use, distribute or otherwise make the Covered Software
+available under the terms of  any  subsequent  version  of  the  License
+published by the license steward.
+
+      4.3. Modified Versions.
+      When You are an Initial Developer and You want  to  create  a  new
+license  for  Your  Original Software, You may create and use a modified
+version of this License if You: (a) rename the license  and  remove  any
+references  to  the name of the license steward (except to note that the
+license differs from this License); and (b) otherwise make it clear that
+the license contains terms which differ from this License.
+
+5. DISCLAIMER OF WARRANTY.
+
+   COVERED SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN .AS IS.  BASIS,
+WITHOUT  WARRANTY  OF  ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
+WITHOUT LIMITATION, WARRANTIES THAT THE  COVERED  SOFTWARE  IS  FREE  OF
+DEFECTS,  MERCHANTABLE,  FIT FOR A PARTICULAR PURPOSE OR NON-INFRINGING.
+THE ENTIRE RISK AS  TO  THE  QUALITY  AND  PERFORMANCE  OF  THE  COVERED
+SOFTWARE IS WITH YOU. SHOULD ANY COVERED SOFTWARE PROVE DEFECTIVE IN ANY
+RESPECT, YOU (NOT THE INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME
+THE  COST  OF  ANY  NECESSARY  SERVICING,  REPAIR  OR  CORRECTION.  THIS
+DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE. NO
+USE OF ANY COVERED SOFTWARE IS AUTHORIZED HEREUNDER  EXCEPT  UNDER  THIS
+DISCLAIMER.
+
+6. TERMINATION.
+
+      6.1. This License and the rights granted hereunder will  terminate
+automatically  if  You fail to comply with terms herein and fail to cure
+such breach within 30 days of becoming aware of the  breach.  Provisions
+which,  by their nature, must remain in effect beyond the termination of
+this License shall survive.
+
+      6.2.  If  You  assert  a  patent  infringement  claim   (excluding
+declaratory judgment actions) against Initial Developer or a Contributor
+(the Initial Developer or Contributor against whom You assert such claim
+is  referred to as .Participant.) alleging that the Participant Software
+(meaning the Contributor Version where the Participant is a  Contributor
+or the Original Software where the Participant is the Initial Developer)
+directly  or  indirectly  infringes  any patent, then any and all rights
+granted directly or indirectly to You by such Participant,  the  Initial
+Developer  (if  the  Initial  Developer  is not the Participant) and all
+Contributors under Sections 2.1 and/or 2.2 of this License  shall,  upon
+60   days   notice   from   Participant   terminate   prospectively  and
+automatically at the expiration of such 60 day notice period, unless  if
+within  such  60  day period You withdraw Your claim with respect to the
+Participant Software against such  Participant  either  unilaterally  or
+pursuant to a written agreement with Participant.
+
+      6.3. In the event of termination under Sections 6.1 or 6.2  above,
+all  end  user  licenses  that  have  been validly granted by You or any
+distributor hereunder prior to termination (excluding  licenses  granted
+to You by any distributor) shall survive termination.
+
+7. LIMITATION OF LIABILITY.
+
+   UNDER NO CIRCUMSTANCES  AND  UNDER  NO  LEGAL  THEORY,  WHETHER  TORT
+(INCLUDING  NEGLIGENCE),  CONTRACT, OR OTHERWISE, SHALL YOU, THE INITIAL
+DEVELOPER, ANY OTHER CONTRIBUTOR, OR ANY DISTRIBUTOR OF COVERED SOFTWARE,
+OR ANY SUPPLIER OF ANY OF SUCH PARTIES, BE LIABLE TO ANY PERSON FOR  ANY
+INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OF ANY CHARACTER
+INCLUDING,  WITHOUT  LIMITATION,  DAMAGES  FOR  LOST  PROFITS,  LOSS  OF
+GOODWILL, WORK STOPPAGE, COMPUTER FAILURE OR MALFUNCTION, OR ANY AND ALL
+OTHER COMMERCIAL DAMAGES OR LOSSES, EVEN IF SUCH PARTY SHALL  HAVE  BEEN
+INFORMED  OF  THE  POSSIBILITY  OF  SUCH  DAMAGES.  THIS  LIMITATION  OF
+LIABILITY SHALL NOT APPLY TO LIABILITY  FOR  DEATH  OR  PERSONAL  INJURY
+RESULTING  FROM  SUCH  PARTY.S  NEGLIGENCE  TO THE EXTENT APPLICABLE LAW
+PROHIBITS SUCH LIMITATION. SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION
+OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THIS  EXCLUSION
+AND LIMITATION MAY NOT APPLY TO YOU.
+
+8. U.S. GOVERNMENT END USERS.
+
+   The Covered Software is a .commercial item,. as that term is  defined
+in  48  C.F.R.  2.101  (Oct.  1995),  consisting of .commercial computer
+software. (as that term is defined at 48  C.F.R.  º  252.227-7014(a)(1))
+and  .commercial computer software documentation. as such terms are used
+in 48 C.F.R. 12.212 (Sept. 1995). Consistent with 48 C.F.R.  12.212  and
+48 C.F.R. 227.7202-1 through 227.7202-4 (June 1995), all U.S. Government
+End  Users  acquire  Covered  Software  with only those rights set forth
+herein. This U.S. Government Rights clause is in lieu of, and supersedes,
+any other FAR,  DFAR,  or  other  clause  or  provision  that  addresses
+Government rights in computer software under this License.
+
+9. MISCELLANEOUS.
+
+   This License represents the  complete  agreement  concerning  subject
+matter  hereof.  If  any  provision  of  this  License  is  held  to  be
+unenforceable, such provision shall  be  reformed  only  to  the  extent
+necessary  to make it enforceable. This License shall be governed by the
+law of the jurisdiction specified  in  a  notice  contained  within  the
+Original Software (except to the extent applicable law, if any, provides
+otherwise),  excluding  such  jurisdiction.s conflict-of-law provisions.
+Any litigation  relating  to  this  License  shall  be  subject  to  the
+jurisdiction  of  the  courts  located  in  the  jurisdiction  and venue
+specified in a notice contained within the Original Software,  with  the
+losing party responsible for costs, including, without limitation, court
+costs  and  reasonable  attorneys. fees and expenses. The application of
+the United Nations Convention on Contracts for the International Sale of
+Goods is expressly excluded. Any law or regulation which  provides  that
+the  language of a contract shall be construed against the drafter shall
+not apply to this License. You agree that You alone are responsible  for
+compliance with the United States export administration regulations (and
+the  export control laws and regulation of any other countries) when You
+use, distribute or otherwise make available any Covered Software.
+
+10. RESPONSIBILITY FOR CLAIMS.
+
+   As between Initial Developer and  the  Contributors,  each  party  is
+responsible  for claims and damages arising, directly or indirectly, out
+of its utilization of rights under this License and You  agree  to  work
+with   Initial   Developer   and   Contributors   to   distribute   such
+responsibility on an equitable basis.  Nothing  herein  is  intended  or
+shall be deemed to constitute any admission of liability.
+
+   NOTICE  PURSUANT  TO  SECTION  9  OF  THE  COMMON   DEVELOPMENT   AND
+DISTRIBUTION LICENSE (CDDL)
+
+   The code released under the CDDL shall be governed by the laws of the
+State  of  California  (excluding   conflict-of-law   provisions).   Any
+litigation relating to this License shall be subject to the jurisdiction
+of  the  Federal  Courts  of the Northern District of California and the
+state courts of the State of California, with venue lying in Santa Clara
+County, California.
+
+
+The GNU General Public License (GPL) Version 2, June 1991
+
+
+Copyright (C) 1989, 1991 Free Software Foundation, Inc. 59 Temple Place,
+Suite 330, Boston, MA 02111-1307 USA
+
+Everyone is permitted to copy and distribute  verbatim  copies  of  this
+license document, but changing it is not allowed.
+
+Preamble
+
+The licenses for most software are designed to take away your freedom to
+share and change it. By contrast, the  GNU  General  Public  License  is
+intended to guarantee your freedom to share and change free software--to
+make  sure  the  software is free for all its users. This General Public
+License applies to most of the Free Software Foundation's  software  and
+to  any other program whose authors commit to using it. (Some other Free
+Software Foundation software is  covered  by  the  GNU  Library  General
+Public License instead.) You can apply it to your programs, too.
+
+When we speak of free software, we are referring to freedom, not  price.
+Our  General Public Licenses are designed to make sure that you have the
+freedom to distribute copies of  free  software  (and  charge  for  this
+service  if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces  of  it  in  new
+free programs; and that you know you can do these things.
+
+To protect your rights, we need to make restrictions that forbid  anyone
+to  deny  you  these rights or to ask you to surrender the rights. These
+restrictions translate  to  certain  responsibilities  for  you  if  you
+distribute copies of the software, or if you modify it.
+
+For example, if you distribute copies of such a program, whether  gratis
+or for a fee, you must give the recipients all the rights that you have.
+You  must  make sure that they, too, receive or can get the source code.
+And you must show them these terms so they know their rights.
+
+We protect your rights with two steps: (1) copyright the  software,  and
+(2)  offer  you  this  license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+Also, for each author's protection and ours, we  want  to  make  certain
+that  everyone  understands  that  there  is  no  warranty for this free
+software. If the software is modified by someone else and passed on,  we
+want  its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the  original
+authors' reputations.
+
+Finally, any free program is threatened constantly by software  patents.
+We  wish  to avoid the danger that redistributors of a free program will
+individually obtain  patent  licenses,  in  effect  making  the  program
+proprietary. To prevent this, we have made it clear that any patent must
+be licensed for everyone's free use or not licensed at all.
+
+The  precise  terms  and  conditions  for  copying,   distribution   and
+modification follow.
+
+
+TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+0. This License applies to any program or other work  which  contains  a
+notice placed by the copyright holder saying it may be distributed under
+the  terms  of this General Public License. The "Program", below, refers
+to any such program or work, and a "work based  on  the  Program"  means
+either  the  Program or any derivative work under copyright law: that is
+to say, a work containing  the  Program  or  a  portion  of  it,  either
+verbatim  or with modifications and/or translated into another language.
+(Hereinafter, translation is included without  limitation  in  the  term
+"modification".) Each licensee is addressed as "you".
+
+Activities other than copying, distribution  and  modification  are  not
+covered  by this License; they are outside its scope. The act of running
+the Program is not restricted,  and  the  output  from  the  Program  is
+covered  only  if  its  contents  constitute a work based on the Program
+(independent of having been made by running the Program).  Whether  that
+is true depends on what the Program does.
+
+1. You may copy and distribute verbatim copies of the  Program's  source
+code  as  you receive it, in any medium, provided that you conspicuously
+and appropriately publish on each copy an appropriate  copyright  notice
+and  disclaimer  of  warranty; keep intact all the notices that refer to
+this License and to the absence of any  warranty;  and  give  any  other
+recipients of the Program a copy of this License along with the Program.
+
+You may charge a fee for the physical act of transferring  a  copy,  and
+you may at your option offer warranty protection in exchange for a fee.
+
+2. You may modify your copy or copies of the Program or any  portion  of
+it,  thus  forming  a work based on the Program, and copy and distribute
+such modifications or work under the terms of Section 1 above,  provided
+that you also meet all of these conditions:
+
+   a) You must cause the  modified  files  to  carry  prominent  notices
+stating that you changed the files and the date of any change.
+
+   b) You must cause any work that you distribute or  publish,  that  in
+whole  or  in  part  contains or is derived from the Program or any part
+thereof, to be licensed as a whole at no charge  to  all  third  parties
+under the terms of this License.
+
+   c) If the modified program normally reads commands interactively when
+run, you must cause it, when started running for such interactive use in
+the most ordinary way, to print or display an announcement including  an
+appropriate  copyright notice and a notice that there is no warranty (or
+else,  saying  that  you  provide  a  warranty)  and  that   users   may
+redistribute  the  program  under these conditions, and telling the user
+how to view a copy of this License. (Exception: if the Program itself is
+interactive but does not normally print such an announcement, your  work
+based on the Program is not required to print an announcement.)
+
+These  requirements  apply  to  the  modified  work  as  a   whole.   If
+identifiable sections of that work are not derived from the Program, and
+can   be   reasonably  considered  independent  and  separate  works  in
+themselves, then this License, and its terms,  do  not  apply  to  those
+sections  when  you  distribute  them  as  separate  works. But when you
+distribute the same sections as part of a whole which is a work based on
+the Program, the distribution of the whole must be on the terms of  this
+License,  whose  permissions  for  other  licensees extend to the entire
+whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim  rights  or  contest
+your  rights  to  work written entirely by you; rather, the intent is to
+exercise  the  right  to  control  the  distribution  of  derivative  or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on  the  Program
+with  the Program (or with a work based on the Program) on a volume of a
+storage or distribution medium does not bring the other work  under  the
+scope of this License.
+
+3. You may copy and distribute the Program (or a work based on it, under
+Section 2) in object code or executable form under the terms of Sections
+1 and 2 above provided that you also do one of the following:
+
+   a) Accompany it  with  the  complete  corresponding  machine-readable
+source code, which must be distributed under the terms of Sections 1 and
+2 above on a medium customarily used for software interchange; or,
+
+   b) Accompany it with a written offer, valid for at least three years,
+to give any third party,  for  a  charge  no  more  than  your  cost  of
+physically  performing  source distribution, a complete machine-readable
+copy of the corresponding source code, to be distributed under the terms
+of Sections 1 and 2 above on a  medium  customarily  used  for  software
+interchange; or,
+
+   c) Accompany it with the information you received as to the offer  to
+distribute  corresponding source code. (This alternative is allowed only
+for noncommercial distribution and only if you received the  program  in
+object  code  or  executable  form  with  such  an offer, in accord with
+Subsection b above.)
+
+The source code for a work means the preferred  form  of  the  work  for
+making modifications to it. For an executable work, complete source code
+means  all  the  source  code  for  all  modules  it  contains, plus any
+associated interface definition files, plus the scripts used to  control
+compilation  and  installation  of the executable. However, as a special
+exception, the source code distributed need not include anything that is
+normally distributed (in either source or binary form)  with  the  major
+components  (compiler,  kernel,  and  so  on) of the operating system on
+which the executable runs, unless that component itself accompanies  the
+executable.
+
+If distribution of executable or object code is made by offering  access
+to copy from a designated place, then offering equivalent access to copy
+the source code from the same place counts as distribution of the source
+code,  even  though  third  parties are not compelled to copy the source
+along with the object code.
+
+4. You may not copy,  modify,  sublicense,  or  distribute  the  Program
+except  as  expressly provided under this License. Any attempt otherwise
+to copy, modify, sublicense or distribute the Program is void, and  will
+automatically terminate your rights under this License. However, parties
+who  have  received  copies, or rights, from you under this License will
+not have their licenses terminated so long as  such  parties  remain  in
+full compliance.
+
+5. You are not required to accept  this  License,  since  you  have  not
+signed  it.  However,  nothing  else  grants you permission to modify or
+distribute the Program  or  its  derivative  works.  These  actions  are
+prohibited  by  law  if  you  do  not accept this License. Therefore, by
+modifying or distributing the Program (or any work based on the Program),
+you indicate your acceptance of this License to do so, and all its terms
+and conditions for copying, distributing or  modifying  the  Program  or
+works based on it.
+
+6. Each time you redistribute the Program (or  any  work  based  on  the
+Program),  the  recipient  automatically  receives  a  license  from the
+original licensor to copy, distribute or modify the Program  subject  to
+these  terms and conditions. You may not impose any further restrictions
+on the recipients' exercise of the rights granted herein.  You  are  not
+responsible for enforcing compliance by third parties to this License.
+
+7. If, as a consequence of a court  judgment  or  allegation  of  patent
+infringement  or  for  any  other reason (not limited to patent issues),
+conditions are imposed on you (whether  by  court  order,  agreement  or
+otherwise)  that  contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot distribute
+so as to satisfy simultaneously your obligations under this License  and
+any  other  pertinent  obligations,  then  as  a consequence you may not
+distribute the Program at all. For example, if a  patent  license  would
+not  permit  royalty-free redistribution of the Program by all those who
+receive copies directly or indirectly through you, then the only way you
+could satisfy both it and this License would be to refrain entirely from
+distribution of the Program.
+
+If any portion of this section is held invalid  or  unenforceable  under
+any  particular  circumstance, the balance of the section is intended to
+apply and the  section  as  a  whole  is  intended  to  apply  in  other
+circumstances.
+
+It is not the purpose of this section to  induce  you  to  infringe  any
+patents  or  other  property  right claims or to contest validity of any
+such claims; this  section  has  the  sole  purpose  of  protecting  the
+integrity of the free software distribution system, which is implemented
+by   public   license   practices.   Many   people  have  made  generous
+contributions to the wide range of  software  distributed  through  that
+system in reliance on consistent application of that system; it is up to
+the  author/donor  to  decide  if  he  or  she  is willing to distribute
+software through any other system and  a  licensee  cannot  impose  that
+choice.
+
+This section is intended to make thoroughly clear what is believed to be
+a consequence of the rest of this License.
+
+8. If the distribution and/or  use  of  the  Program  is  restricted  in
+certain  countries  either  by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License  may
+add  an  explicit  geographical  distribution limitation excluding those
+countries, so that distribution is permitted only in or among  countries
+not   thus  excluded.  In  such  case,  this  License  incorporates  the
+limitation as if written in the body of this License.
+
+9. The Free Software Foundation may publish revised and/or new  versions
+of  the General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If  the  Program
+specifies  a version number of this License which applies to it and "any
+later  version",  you  have  the  option  of  following  the  terms  and
+conditions  either  of that version or of any later version published by
+the Free Software Foundation. If the Program does not specify a  version
+number of this License, you may choose any version ever published by the
+Free Software Foundation.
+
+10. If you wish to incorporate parts of  the  Program  into  other  free
+programs  whose  distribution  conditions  are  different,  write to the
+author to ask for permission. For software which is copyrighted  by  the
+Free  Software  Foundation,  write  to  the Free Software Foundation; we
+sometimes make exceptions for this. Our decision will be guided  by  the
+two  goals  of preserving the free status of all derivatives of our free
+software and of promoting the sharing and reuse of software generally.
+
+NO WARRANTY
+
+11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT  WHEN
+OTHERWISE  STATED  IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM  "AS  IS"  WITHOUT  WARRANTY  OF  ANY  KIND,  EITHER
+EXPRESSED  OR  IMPLIED,  INCLUDING,  BUT  NOT  LIMITED  TO,  THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE
+ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.
+SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY
+SERVICING, REPAIR OR CORRECTION.
+
+12. IN NO EVENT UNLESS REQUIRED  BY  APPLICABLE  LAW  OR  AGREED  TO  IN
+WRITING  WILL  ANY  COPYRIGHT  HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
+AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR
+DAMAGES, INCLUDING ANY GENERAL,  SPECIAL,  INCIDENTAL  OR  CONSEQUENTIAL
+DAMAGES  ARISING  OUT  OF  THE  USE  OR  INABILITY  TO  USE  THE PROGRAM
+(INCLUDING BUT NOT LIMITED TO  LOSS  OF  DATA  OR  DATA  BEING  RENDERED
+INACCURATE  OR  LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF
+THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER  OR
+OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+END OF TERMS AND CONDITIONS
+
+
+How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it  to  be  of  the  greatest
+possible  use  to the public, the best way to achieve this is to make it
+free software which everyone can redistribute  and  change  under  these
+terms.
+
+To do so, attach the following notices to the program. It is  safest  to
+attach  them to the start of each source file to most effectively convey
+the exclusion of warranty; and  each  file  should  have  at  least  the
+"copyright" line and a pointer to where the full notice is found.
+
+   One line to give the program's name and a brief idea of what it does.
+
+   Copyright (C)
+
+   This program is free software; you can redistribute it and/or  modify
+it under the terms of the GNU General Public License as published by the
+Free  Software  Foundation; either version 2 of the License, or (at your
+option) any later version.
+
+   This program is distributed in the hope that it will be  useful,  but
+WITHOUT   ANY   WARRANTY;   without   even   the   implied  warranty  of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+Public License for more details.
+
+   You should have received a copy of the  GNU  General  Public  License
+along  with this program; if not, write to the Free Software Foundation,
+Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice  like  this
+when it starts in an interactive mode:
+
+   Gnomovision version 69, Copyright (C) year name of author
+   Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show
+w'. This is free software, and you are welcome to redistribute it  under
+certain conditions; type `show c' for details.
+
+The hypothetical  commands  `show  w'  and  `show  c'  should  show  the
+appropriate parts of the General Public License. Of course, the commands
+you  use  may be called something other than `show w' and `show c'; they
+could even be mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or  your
+school,  if  any,  to  sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+   Yoyodyne, Inc.,  hereby  disclaims  all  copyright  interest  in  the
+program `Gnomovision' (which makes passes at compilers) written by James
+Hacker.
+
+   signature of Ty Coon, 1 April 1989
+   Ty Coon, President of Vice
+
+This General Public License does not permit incorporating  your  program
+into  proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking  proprietary  applications
+with  the  library.  If this is what you want to do, use the GNU Library
+General Public License instead of this License.
+
+
+"CLASSPATH" EXCEPTION TO THE GPL VERSION 2
+
+Certain source files distributed by Sun Microsystems, Inc.  are  subject
+to  the following clarification and special exception to the GPL Version
+2, but only where Sun has expressly included in  the  particular  source
+file's header the words
+
+"Sun designates this particular  file  as  subject  to  the  "Classpath"
+exception  as  provided by Sun in the License file that accompanied this
+code."
+
+Linking this library statically or dynamically  with  other  modules  is
+making  a  combined  work  based  on  this  library. Thus, the terms and
+conditions of the GNU General Public License Version 2 cover  the  whole
+combination.
+
+As a special exception, the copyright holders of this library  give  you
+permission  to  link this library with independent modules to produce an
+executable, regardless of the license terms of these independent modules,
+and to copy and distribute the resulting executable under terms of  your
+choice, provided that you also meet, for each linked independent module,
+the  terms and conditions of the license of that module.? An independent
+module is a module which is not derived from or based on this  library.?
+If  you  modify  this  library,  you  may  extend this exception to your
+version of the library, but you are not obligated to do so.? If  you  do
+not wish to do so, delete this exception statement from your version.
+

x-pack/snapshot-tool/licenses/jaxb-NOTICE.txt

@@ -0,0 +1 @@
+ 

x-pack/snapshot-tool/licenses/jaxb-api-2.2.2.jar.sha1

@@ -0,0 +1 @@
+aeb3021ca93dde265796d82015beecdcff95bf09

x-pack/snapshot-tool/licenses/jmespath-java-1.11.562.jar.sha1

@@ -0,0 +1 @@
+1147ed0ad1f2c5a16b8271e38e3cda5cd488c8ae

x-pack/snapshot-tool/licenses/log4j-1.2-api-2.11.1.jar.sha1

@@ -0,0 +1 @@
+3aba3398fe064a3eab4331f88161c7480e848418

x-pack/snapshot-tool/licenses/log4j-LICENSE.txt

@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright 1999-2005 The Apache Software Foundation
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

x-pack/snapshot-tool/licenses/log4j-NOTICE.txt

@@ -0,0 +1,5 @@
+Apache log4j
+Copyright 2007 The Apache Software Foundation
+
+This product includes software developed at
+The Apache Software Foundation (http://www.apache.org/).

x-pack/snapshot-tool/src/bin/elasticsearch-snapshot

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+SCRIPT="$0"
+
+while [ -h "$SCRIPT" ] ; do
+  ls=`ls -ld "$SCRIPT"`
+  # Drop everything prior to ->
+  link=`expr "$ls" : '.*-> \(.*\)$'`
+  if expr "$link" : '/.*' > /dev/null; then
+    SCRIPT="$link"
+  else
+    SCRIPT=`dirname "$SCRIPT"`/"$link"
+  fi
+done
+
+JARS_PATH="$(dirname $(dirname $SCRIPT))/libs"
+
+unset CLASSPATH
+
+for J in $(cd "${JARS_PATH}"; ls *.jar); do
+  CLASSPATH=${CLASSPATH}${CLASSPATH:+:}${JARS_PATH}/${J}
+done
+
+for J in $(cd "${JARS_PATH}/vendor"; ls *.jar); do
+  CLASSPATH=${CLASSPATH}${CLASSPATH:+:}${JARS_PATH}/vendor/${J}
+done
+
+exec java -cp "${CLASSPATH}" org.elasticsearch.snapshots.SnapshotToolCli "$@"

x-pack/snapshot-tool/src/main/java/org/elasticsearch/snapshots/AbstractRepository.java

@@ -0,0 +1,249 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+package org.elasticsearch.snapshots;
+
+import org.elasticsearch.ElasticsearchException;
+import org.elasticsearch.ElasticsearchParseException;
+import org.elasticsearch.action.ActionRunnable;
+import org.elasticsearch.action.support.GroupedActionListener;
+import org.elasticsearch.action.support.PlainActionFuture;
+import org.elasticsearch.cli.Terminal;
+import org.elasticsearch.common.collect.Tuple;
+import org.elasticsearch.common.settings.Settings;
+import org.elasticsearch.common.util.concurrent.EsExecutors;
+import org.elasticsearch.common.util.concurrent.ThreadContext;
+import org.elasticsearch.common.util.set.Sets;
+import org.elasticsearch.common.xcontent.XContentParser;
+import org.elasticsearch.repositories.IndexId;
+import org.elasticsearch.repositories.RepositoryData;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Date;
+import java.util.List;
+import java.util.Objects;
+import java.util.Set;
+import java.util.TreeSet;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+
+public abstract class AbstractRepository implements Repository {
+    private static final long DEFAULT_SAFETY_GAP_MILLIS = 3600 * 1000;
+    private static final int DEFAULT_PARALLELISM = 100;
+
+    private static final String INCOMPATIBLE_SNAPSHOTS = "incompatible-snapshots";
+    private static final String NAME = "name";
+    private static final String UUID = "uuid";
+
+    protected final Terminal terminal;
+    private final long safetyGapMillis;
+    private final int parallelism;
+
+    protected AbstractRepository(Terminal terminal, Long safetyGapMillis, Integer parallelism) {
+        this.terminal = terminal;
+        this.safetyGapMillis = safetyGapMillis == null ? DEFAULT_SAFETY_GAP_MILLIS : safetyGapMillis;
+        this.parallelism = parallelism == null ? DEFAULT_PARALLELISM : parallelism;
+    }
+
+    private void describeCollection(String start, Collection<?> elements) {
+        terminal.println(Terminal.Verbosity.VERBOSE,
+                start + " has " + elements.size() + " elements: " + elements);
+    }
+
+    /**
+     * Reads the incompatible snapshot ids from x-content, loading them into a new instance of {@link RepositoryData}
+     * that is created from the invoking instance, plus the incompatible snapshots that are read from x-content.
+     */
+    static List<SnapshotId> incompatibleSnapshotsFromXContent(final XContentParser parser) throws IOException {
+        List<SnapshotId> incompatibleSnapshotIds = new ArrayList<>();
+        if (parser.nextToken() == XContentParser.Token.START_OBJECT) {
+            while (parser.nextToken() == XContentParser.Token.FIELD_NAME) {
+                String currentFieldName = parser.currentName();
+                if (INCOMPATIBLE_SNAPSHOTS.equals(currentFieldName)) {
+                    if (parser.nextToken() == XContentParser.Token.START_ARRAY) {
+                        while (parser.nextToken() != XContentParser.Token.END_ARRAY) {
+                            incompatibleSnapshotIds.add(snapshotIdFromXContent(parser));
+                        }
+                    } else {
+                        throw new ElasticsearchParseException("expected array for [" + currentFieldName + "]");
+                    }
+                } else {
+                    throw new ElasticsearchParseException("unknown field name  [" + currentFieldName + "]");
+                }
+            }
+        } else {
+            throw new ElasticsearchParseException("start object expected");
+        }
+        return incompatibleSnapshotIds;
+    }
+
+    private static SnapshotId snapshotIdFromXContent(XContentParser parser) throws IOException {
+        // the new format from 5.0 which contains the snapshot name and uuid
+        if (parser.currentToken() == XContentParser.Token.START_OBJECT) {
+            String name = null;
+            String uuid = null;
+            while (parser.nextToken() != XContentParser.Token.END_OBJECT) {
+                String currentFieldName = parser.currentName();
+                parser.nextToken();
+                if (NAME.equals(currentFieldName)) {
+                    name = parser.text();
+                } else if (UUID.equals(currentFieldName)) {
+                    uuid = parser.text();
+                }
+            }
+            return new SnapshotId(name, uuid);
+        } else {
+            // the old format pre 5.0 that only contains the snapshot name, use the name as the uuid too
+            final String name = parser.text();
+            return new SnapshotId(name, name);
+        }
+    }
+
+    @Override
+    public void cleanup() throws IOException {
+        terminal.println(Terminal.Verbosity.VERBOSE, "Obtaining latest index file generation and creation timestamp");
+        Tuple<Long, Date> latestIndexIdAndTimestamp = getLatestIndexIdAndTimestamp();
+        if (latestIndexIdAndTimestamp.v1() == -1) {
+            terminal.println(Terminal.Verbosity.NORMAL, "No index-N files found. Repository is empty or corrupted? Exiting");
+            return;
+        }
+        long latestIndexId = latestIndexIdAndTimestamp.v1();
+        terminal.println(Terminal.Verbosity.VERBOSE, "Latest index file generation is " + latestIndexId);
+        Date indexNTimestamp = latestIndexIdAndTimestamp.v2();
+        Date shiftedIndexNTimestamp = new Date(indexNTimestamp.getTime() - safetyGapMillis);
+        terminal.println(Terminal.Verbosity.VERBOSE, "Latest index file creation timestamp is " + indexNTimestamp);
+        terminal.println(Terminal.Verbosity.VERBOSE, "Shifted by safety gap creation timestamp is " + shiftedIndexNTimestamp);
+
+        terminal.println(Terminal.Verbosity.VERBOSE, "Reading latest index file");
+        final RepositoryData repositoryData = getRepositoryData(latestIndexId);
+        final Collection<SnapshotId> incompatibleSnapshots = getIncompatibleSnapshots();
+        if (incompatibleSnapshots.isEmpty() == false) {
+            throw new ElasticsearchException(
+                "Found incompatible snapshots which prevent a safe cleanup execution " + incompatibleSnapshots);
+        }
+        if (repositoryData.getIndices().isEmpty()) {
+            throw new ElasticsearchException(
+                "The repository data contains no references to any indices. Maybe it is from before version 5.x?");
+        }
+        Set<String> referencedIndexIds = repositoryData.getIndices().values().stream().map(IndexId::getId).collect(Collectors.toSet());
+
+        describeCollection("Set of indices referenced by index file", referencedIndexIds);
+
+        terminal.println(Terminal.Verbosity.VERBOSE, "Listing indices/ directory");
+        Set<String> allIndexIds = getAllIndexDirectoryNames();
+        describeCollection("Set of indices inside indices/ directory", allIndexIds);
+
+        Set<String> deletionCandidates = new TreeSet<>(Sets.difference(allIndexIds, referencedIndexIds));
+        describeCollection("Set of deletion candidates", deletionCandidates);
+        if (deletionCandidates.isEmpty()) {
+            terminal.println(Terminal.Verbosity.NORMAL, "Set of deletion candidates is empty. Exiting");
+            return;
+        }
+
+        ExecutorService executor = EsExecutors.newScaling("snapshot_cleanup", 0, parallelism, 10L, TimeUnit.SECONDS,
+            EsExecutors.daemonThreadFactory("snapshot_cleanup_tool"), new ThreadContext(Settings.EMPTY));
+        try {
+            PlainActionFuture<Collection<String>> orphanedIndicesFuture = new PlainActionFuture<>();
+            GroupedActionListener<String> groupedOrphanedIndicesListener = new GroupedActionListener<>(orphanedIndicesFuture,
+                    deletionCandidates.size());
+            for (String candidate : deletionCandidates) {
+                executor.submit(new ActionRunnable<>(groupedOrphanedIndicesListener) {
+                    @Override
+                    protected void doRun() {
+                        if (isOrphaned(candidate, shiftedIndexNTimestamp)) {
+                            groupedOrphanedIndicesListener.onResponse(candidate);
+                        } else {
+                            groupedOrphanedIndicesListener.onResponse(null);
+                        }
+                    }
+                });
+            }
+            Set<String> orphanedIndexIds =
+                    new TreeSet<>(orphanedIndicesFuture.actionGet().stream().filter(Objects::nonNull).collect(Collectors.toSet()));
+            describeCollection("Set of orphaned indices", orphanedIndexIds);
+            if (orphanedIndexIds.isEmpty()) {
+                terminal.println(Terminal.Verbosity.NORMAL, "Set of orphaned indices is empty. Exiting");
+                return;
+            }
+
+            confirm(terminal, orphanedIndexIds.size() + " indices have been found. Do you want to remove orphaned indices files? " +
+                    "This action is NOT REVERSIBLE");
+
+            terminal.println(Terminal.Verbosity.NORMAL, "Removing " + orphanedIndexIds.size() + " orphaned indices");
+            PlainActionFuture<Collection<Void>> removalFuture = new PlainActionFuture<>();
+            final List<Tuple<Integer, Long>> results = Collections.synchronizedList(new ArrayList<>());
+            GroupedActionListener<Void> groupedRemovalListener =
+                    new GroupedActionListener<>(removalFuture, orphanedIndexIds.size());
+            for (final String indexId : orphanedIndexIds) {
+                executor.submit(new ActionRunnable<>(groupedRemovalListener) {
+                    @Override
+                    protected void doRun() {
+                        terminal.println(Terminal.Verbosity.NORMAL, "Removing orphaned index " + indexId);
+                        Tuple<Integer, Long> countSize = deleteIndex(indexId);
+                        terminal.println("Index directory " + indexId + ", files removed " + countSize.v1() +
+                                ", bytes freed " + countSize.v2());
+                        results.add(countSize);
+                        groupedRemovalListener.onResponse(null);
+                    }
+                });
+            }
+            Exception ex = null;
+            try {
+                removalFuture.actionGet();
+            } catch (Exception e) {
+                ex = e;
+            }
+            int totalFilesRemoved = results.stream().mapToInt(Tuple::v1).sum();
+            long totalSpaceFreed = results.stream().mapToLong(Tuple::v2).sum();
+            terminal.println(Terminal.Verbosity.NORMAL, "Total files removed: " + totalFilesRemoved);
+            terminal.println(Terminal.Verbosity.NORMAL, "Total bytes freed: " + totalSpaceFreed);
+            terminal.println(Terminal.Verbosity.NORMAL,
+                "Finished removing " + results.size() + "/" + orphanedIndexIds.size() + " orphaned indices");
+            if (ex != null) {
+                throw new ElasticsearchException(ex);
+            }
+        } finally {
+            executor.shutdown();
+            try {
+                if (executor.awaitTermination(30, TimeUnit.SECONDS) == false) {
+                    terminal.println(Terminal.Verbosity.NORMAL, "Unexpectedly there are still tasks running on the executor");
+                }
+            } catch (InterruptedException e) {
+                throw new ElasticsearchException(e);
+            }
+        }
+    }
+
+    private boolean isOrphaned(String candidate, Date shiftedIndexNTimestamp) {
+        terminal.println(Terminal.Verbosity.VERBOSE, "Reading index " + candidate + " last modification timestamp");
+        Date indexTimestamp = getIndexTimestamp(candidate);
+        if (indexTimestamp != null) {
+            if (indexTimestamp.before(shiftedIndexNTimestamp)) {
+                terminal.println(Terminal.Verbosity.VERBOSE,
+                        "Index " + candidate + " is orphaned because its modification timestamp " + indexTimestamp +
+                                " is less than index-N shifted timestamp " + shiftedIndexNTimestamp);
+                return true;
+            } else {
+                terminal.println(Terminal.Verbosity.VERBOSE,
+                        "Index  " + candidate + " might not be orphaned because its modification timestamp "
+                                + indexTimestamp +
+                                " is gte than index-N shifted timestamp " + shiftedIndexNTimestamp);
+            }
+        }
+        return false;
+    }
+
+    private void confirm(Terminal terminal, String msg) {
+        terminal.println(Terminal.Verbosity.NORMAL, msg);
+        String text = terminal.readText("Confirm [y/N] ");
+        if (text.equalsIgnoreCase("y") == false) {
+            throw new ElasticsearchException("Aborted by user");
+        }
+    }
+}

x-pack/snapshot-tool/src/main/java/org/elasticsearch/snapshots/CleanupS3RepositoryCommand.java

@@ -0,0 +1,113 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+package org.elasticsearch.snapshots;
+
+import joptsimple.OptionParser;
+import joptsimple.OptionSet;
+import joptsimple.OptionSpec;
+import org.elasticsearch.ElasticsearchException;
+import org.elasticsearch.cli.Command;
+import org.elasticsearch.cli.CommandLoggingConfigurator;
+import org.elasticsearch.cli.Terminal;
+import org.elasticsearch.common.Strings;
+
+public class CleanupS3RepositoryCommand extends Command {
+
+    private final OptionSpec<String> regionOption;
+    private final OptionSpec<String> endpointOption;
+    private final OptionSpec<String> bucketOption;
+    private final OptionSpec<String> basePathOption;
+    private final OptionSpec<String> accessKeyOption;
+    private final OptionSpec<String> secretKeyOption;
+    private final OptionSpec<Long> safetyGapMillisOption;
+    private final OptionSpec<Integer> parallelismOption;
+
+    public CleanupS3RepositoryCommand() {
+        super("Command to cleanup orphaned segment files from the S3 repository",
+            CommandLoggingConfigurator::configureLoggingWithoutConfig);
+
+        regionOption = parser.accepts("region", "S3 region")
+                .withRequiredArg();
+
+        endpointOption = parser.accepts("endpoint", "S3 endpoint")
+                .withRequiredArg();
+
+        bucketOption = parser.accepts("bucket", "Bucket name")
+                .withRequiredArg();
+
+        basePathOption = parser.accepts("base_path", "Base path")
+                .withRequiredArg();
+
+        accessKeyOption = parser.accepts("access_key", "Access key")
+                .withRequiredArg();
+
+        secretKeyOption = parser.accepts("secret_key", "Secret key")
+                .withRequiredArg();
+
+        safetyGapMillisOption = parser.accepts("safety_gap_millis", "Safety gap to account for clock drift")
+                .withRequiredArg().ofType(Long.class);
+
+        parallelismOption = parser.accepts("parallelism", "How many threads to use to talk to S3")
+                .withRequiredArg().ofType(Integer.class);
+    }
+
+
+    @Override
+    protected void execute(Terminal terminal, OptionSet options) throws Exception {
+        String region = regionOption.value(options);
+        String endpoint = endpointOption.value(options);
+
+        if (Strings.isNullOrEmpty(region) && Strings.isNullOrEmpty(endpoint)) {
+            throw new ElasticsearchException("region or endpoint option is required for cleaning up S3 repository");
+        }
+
+        if (Strings.isNullOrEmpty(region) == false && Strings.isNullOrEmpty(endpoint) == false) {
+            throw new ElasticsearchException("you must not specify both region and endpoint");
+        }
+
+        String bucket = bucketOption.value(options);
+        if (Strings.isNullOrEmpty(bucket)) {
+            throw new ElasticsearchException("bucket option is required for cleaning up S3 repository");
+        }
+
+        String basePath = basePathOption.value(options);
+        if (basePath.endsWith("/")) {
+            throw new ElasticsearchException("there should be not trailing slash in the base path");
+        }
+
+        String accessKey = accessKeyOption.value(options);
+        if (Strings.isNullOrEmpty(accessKey)) {
+            throw new ElasticsearchException("access_key option is required for cleaning up S3 repository");
+        }
+
+        String secretKey = secretKeyOption.value(options);
+        if (Strings.isNullOrEmpty(secretKey)) {
+            throw new ElasticsearchException("secret_key option is required for cleaning up S3 repository");
+        }
+
+        Long safetyGapMillis = safetyGapMillisOption.value(options);
+
+        if (safetyGapMillis != null && safetyGapMillis < 0L) {
+            throw new ElasticsearchException("safety_gap_millis should be non-negative");
+        }
+
+        Integer parallelism = parallelismOption.value(options);
+        if (parallelism != null && parallelism < 1) {
+            throw new ElasticsearchException("parallelism should be at least 1");
+        }
+
+        Repository repository = new S3Repository(terminal, safetyGapMillis, parallelism, endpoint, region, accessKey, secretKey, bucket,
+                basePath);
+        repository.cleanup();
+    }
+
+    // package-private for testing
+    OptionParser getParser() {
+        return parser;
+    }
+
+
+}

x-pack/snapshot-tool/src/main/java/org/elasticsearch/snapshots/Repository.java

@@ -0,0 +1,30 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+package org.elasticsearch.snapshots;
+
+import org.elasticsearch.common.collect.Tuple;
+import org.elasticsearch.repositories.RepositoryData;
+
+import java.io.IOException;
+import java.util.Collection;
+import java.util.Date;
+import java.util.Set;
+
+public interface Repository {
+    Tuple<Long, Date> getLatestIndexIdAndTimestamp() throws IOException;
+
+    RepositoryData getRepositoryData(long indexFileGeneration) throws IOException;
+
+    Collection<SnapshotId> getIncompatibleSnapshots() throws IOException;
+
+    Set<String> getAllIndexDirectoryNames();
+
+    Date getIndexTimestamp(String indexDirectoryName);
+
+    Tuple<Integer, Long> deleteIndex(String indexDirectoryName);
+
+    void cleanup() throws IOException;
+}

x-pack/snapshot-tool/src/main/java/org/elasticsearch/snapshots/S3Repository.java

@@ -0,0 +1,221 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+package org.elasticsearch.snapshots;
+
+import com.amazonaws.AmazonServiceException;
+import com.amazonaws.ClientConfiguration;
+import com.amazonaws.auth.AWSStaticCredentialsProvider;
+import com.amazonaws.auth.BasicAWSCredentials;
+import com.amazonaws.client.builder.AwsClientBuilder;
+import com.amazonaws.services.s3.AmazonS3;
+import com.amazonaws.services.s3.AmazonS3ClientBuilder;
+import com.amazonaws.services.s3.model.AmazonS3Exception;
+import com.amazonaws.services.s3.model.DeleteObjectsRequest;
+import com.amazonaws.services.s3.model.ListObjectsRequest;
+import com.amazonaws.services.s3.model.ObjectListing;
+import com.amazonaws.services.s3.model.S3ObjectSummary;
+import org.elasticsearch.cli.Terminal;
+import org.elasticsearch.common.Strings;
+import org.elasticsearch.common.collect.Tuple;
+import org.elasticsearch.common.io.stream.BytesStreamOutput;
+import org.elasticsearch.common.xcontent.LoggingDeprecationHandler;
+import org.elasticsearch.common.xcontent.NamedXContentRegistry;
+import org.elasticsearch.common.xcontent.XContentHelper;
+import org.elasticsearch.common.xcontent.XContentParser;
+import org.elasticsearch.common.xcontent.XContentType;
+import org.elasticsearch.core.internal.io.Streams;
+import org.elasticsearch.repositories.RepositoryData;
+import org.elasticsearch.repositories.blobstore.BlobStoreRepository;
+import org.elasticsearch.rest.RestStatus;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Date;
+import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+public class S3Repository extends AbstractRepository {
+    private final AmazonS3 client;
+    private final String bucket;
+    private final String basePath;
+
+    S3Repository(Terminal terminal, Long safetyGapMillis, Integer parallelism, String endpoint, String region, String accessKey,
+                 String secretKey, String bucket,
+                 String basePath) {
+        super(terminal, safetyGapMillis, parallelism);
+        this.client = buildS3Client(endpoint, region, accessKey, secretKey);
+        this.basePath = basePath;
+        this.bucket = bucket;
+    }
+
+    private static AmazonS3 buildS3Client(String endpoint, String region, String accessKey, String secretKey) {
+        final AmazonS3ClientBuilder builder = AmazonS3ClientBuilder.standard();
+        builder.withCredentials(new AWSStaticCredentialsProvider(new BasicAWSCredentials(accessKey, secretKey)));
+        if (Strings.isNullOrEmpty(region)) {
+            builder.withEndpointConfiguration(new AwsClientBuilder.EndpointConfiguration(endpoint, null));
+        } else {
+            builder.withRegion(region);
+        }
+        builder.setClientConfiguration(new ClientConfiguration().withUserAgentPrefix("s3_cleanup_tool"));
+
+        return builder.build();
+    }
+
+    private String fullPath(String path) {
+        return basePath + "/" + path;
+    }
+
+    @Override
+    public Tuple<Long, Date> getLatestIndexIdAndTimestamp() {
+        ObjectListing listing = client.listObjects(bucket, fullPath(BlobStoreRepository.INDEX_FILE_PREFIX));
+        int prefixLength = fullPath(BlobStoreRepository.INDEX_FILE_PREFIX).length();
+        long maxGeneration = -1;
+        Date timestamp = null;
+        while (true) {
+            for (S3ObjectSummary objectSummary : listing.getObjectSummaries()) {
+                String generationStr = objectSummary.getKey().substring(prefixLength);
+                try {
+                    long generation = Long.parseLong(generationStr);
+                    if (generation > maxGeneration) {
+                        maxGeneration = generation;
+                        timestamp = objectSummary.getLastModified();
+                    }
+                } catch (NumberFormatException e) {
+                    terminal.println(Terminal.Verbosity.VERBOSE,
+                            "Ignoring index file with unexpected name format " + objectSummary.getKey());
+                }
+            }
+
+            if (listing.isTruncated()) { //very unlikely that we have 1K+ index-N files, but let's make it bullet-proof
+                listing = client.listNextBatchOfObjects(listing);
+            } else {
+                return Tuple.tuple(maxGeneration, timestamp);
+            }
+        }
+    }
+
+    @Override
+    public RepositoryData getRepositoryData(long indexFileGeneration) throws IOException {
+        final String snapshotsIndexBlobName = BlobStoreRepository.INDEX_FILE_PREFIX + indexFileGeneration;
+        try (InputStream blob = client.getObject(bucket, fullPath(snapshotsIndexBlobName)).getObjectContent()) {
+            BytesStreamOutput out = new BytesStreamOutput();
+            Streams.copy(blob, out);
+            // EMPTY is safe here because RepositoryData#fromXContent calls namedObject
+            try (XContentParser parser = XContentHelper.createParser(NamedXContentRegistry.EMPTY,
+                    LoggingDeprecationHandler.INSTANCE, out.bytes(), XContentType.JSON)) {
+                return RepositoryData.snapshotsFromXContent(parser, indexFileGeneration);
+            }
+        } catch (IOException e) {
+            terminal.println("Failed to read " + snapshotsIndexBlobName + " file");
+            throw e;
+        }
+    }
+
+    @Override
+    public Collection<SnapshotId> getIncompatibleSnapshots() throws IOException {
+        try (InputStream blob = client.getObject(bucket, fullPath("incompatible-snapshots")).getObjectContent()) {
+            BytesStreamOutput out = new BytesStreamOutput();
+            Streams.copy(blob, out);
+            // EMPTY is safe here because RepositoryData#fromXContent calls namedObject
+            try (XContentParser parser = XContentHelper.createParser(NamedXContentRegistry.EMPTY,
+                LoggingDeprecationHandler.INSTANCE, out.bytes(), XContentType.JSON)) {
+                return incompatibleSnapshotsFromXContent(parser);
+            }
+        } catch (AmazonS3Exception e) {
+            if (e.getStatusCode() != RestStatus.NOT_FOUND.getStatus()) {
+                throw e;
+            }
+            return Collections.emptyList();
+        } catch (IOException e) {
+            terminal.println("Failed to read [incompatible-snapshots] blob");
+            throw e;
+        }
+    }
+
+    @Override
+    public Set<String> getAllIndexDirectoryNames() {
+        try {
+            List<String> prefixes = new ArrayList<>();
+            ListObjectsRequest request = new ListObjectsRequest();
+            request.setBucketName(bucket);
+            request.setPrefix(fullPath("indices/"));
+            request.setDelimiter("/");
+            ObjectListing object_listing = client.listObjects(request);
+            prefixes.addAll(object_listing.getCommonPrefixes());
+
+            while (object_listing.isTruncated()) {
+                object_listing = client.listNextBatchOfObjects(object_listing);
+                prefixes.addAll(object_listing.getCommonPrefixes());
+            }
+            int indicesPrefixLength = fullPath("indices/").length();
+            assert prefixes.stream().allMatch(prefix -> prefix.startsWith(fullPath("indices/")));
+            return prefixes.stream().map(prefix -> prefix.substring(indicesPrefixLength, prefix.length() - 1)).collect(Collectors.toSet());
+        } catch (AmazonServiceException e) {
+            terminal.println("Failed to list indices");
+            throw e;
+        }
+    }
+
+    @Override
+    public Date getIndexTimestamp(String indexDirectoryName) {
+        /*
+         * There is shorter way to get modification timestamp of the index directory:
+         *
+         * S3Object index = client.getObject(bucket, fullPath("indices/" + indexDirectoryName + "/"));
+         * return index.getObjectMetadata().getLastModified();
+         *
+         * It also will work if the directory is empty.
+         * However, on Minio the code above returns some weird dates far in the past.
+         * So we use listing instead.
+         */
+        final ListObjectsRequest listRequest = new ListObjectsRequest();
+        listRequest.setBucketName(bucket);
+        listRequest.setPrefix(fullPath("indices/" + indexDirectoryName + "/"));
+        listRequest.setMaxKeys(1);
+        ObjectListing listing = client.listObjects(listRequest);
+        List<S3ObjectSummary> summaries = listing.getObjectSummaries();
+        if (summaries.isEmpty()) {
+            terminal.println(Terminal.Verbosity.VERBOSE, "Failed to find single file in index "
+                    + indexDirectoryName + " directory. " + "Skipping");
+            return null;
+        } else {
+            S3ObjectSummary any = summaries.get(0);
+            return any.getLastModified();
+        }
+    }
+
+    private void deleteFiles(List<String> files) {
+        // AWS has a limit of 1K elements when performing batch remove,
+        // However, list call never spits out more than 1K elements, so there is no need to partition
+        terminal.println(Terminal.Verbosity.VERBOSE, "Batch removing the following files " + files);
+        client.deleteObjects(new DeleteObjectsRequest(bucket).withKeys(Strings.toStringArray(files)));
+    }
+
+    @Override
+    public Tuple<Integer, Long> deleteIndex(String indexDirectoryName) {
+        int removedFilesCount = 0;
+        long filesSize = 0L;
+        String prefix = fullPath("indices/" + indexDirectoryName);
+
+        ObjectListing listing = client.listObjects(bucket, prefix);
+        while (true) {
+            List<String> files = listing.getObjectSummaries().stream().map(S3ObjectSummary::getKey).collect(Collectors.toList());
+            deleteFiles(files);
+            removedFilesCount += files.size();
+            filesSize += listing.getObjectSummaries().stream().mapToLong(S3ObjectSummary::getSize).sum();
+
+            if (listing.isTruncated()) {
+                listing = client.listNextBatchOfObjects(listing);
+            } else {
+                return Tuple.tuple(removedFilesCount, filesSize);
+            }
+        }
+    }
+}

x-pack/snapshot-tool/src/main/java/org/elasticsearch/snapshots/SnapshotToolCli.java

@@ -0,0 +1,24 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+package org.elasticsearch.snapshots;
+
+import org.elasticsearch.cli.CommandLoggingConfigurator;
+import org.elasticsearch.cli.LoggingAwareMultiCommand;
+import org.elasticsearch.cli.Terminal;
+
+public class SnapshotToolCli extends LoggingAwareMultiCommand {
+
+    public SnapshotToolCli() {
+        super("Tool to work with repositories and snapshots");
+        CommandLoggingConfigurator.configureLoggingWithoutConfig();
+        subcommands.put("cleanup_s3", new CleanupS3RepositoryCommand());
+    }
+
+    public static void main(String[] args) throws Exception {
+        exit(new SnapshotToolCli().main(args, Terminal.DEFAULT));
+    }
+
+}

x-pack/snapshot-tool/src/test/java/org/elasticsearch/snapshots/S3CleanupTests.java

@@ -0,0 +1,333 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+package org.elasticsearch.snapshots;
+
+import joptsimple.OptionSet;
+import org.elasticsearch.ElasticsearchException;
+import org.elasticsearch.action.admin.cluster.snapshots.create.CreateSnapshotResponse;
+import org.elasticsearch.action.support.master.AcknowledgedResponse;
+import org.elasticsearch.cli.MockTerminal;
+import org.elasticsearch.cli.Terminal;
+import org.elasticsearch.common.settings.MockSecureSettings;
+import org.elasticsearch.common.settings.SecureSettings;
+import org.elasticsearch.common.settings.Settings;
+import org.elasticsearch.plugins.Plugin;
+import org.elasticsearch.repositories.RepositoriesService;
+import org.elasticsearch.repositories.blobstore.BlobStoreRepository;
+import org.elasticsearch.repositories.blobstore.BlobStoreTestUtil;
+import org.elasticsearch.repositories.s3.S3RepositoryPlugin;
+import org.elasticsearch.test.ESSingleNodeTestCase;
+import org.elasticsearch.threadpool.ThreadPool;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Map;
+import java.util.Set;
+import java.util.TreeMap;
+import java.util.TreeSet;
+import java.util.concurrent.TimeUnit;
+
+import static org.hamcrest.Matchers.containsString;
+import static org.hamcrest.Matchers.equalTo;
+import static org.hamcrest.Matchers.greaterThan;
+import static org.hamcrest.Matchers.not;
+
+public class S3CleanupTests extends ESSingleNodeTestCase {
+
+    private BlobStoreRepository repository;
+
+    @Override
+    public void setUp() throws Exception {
+        super.setUp();
+        createRepository("test-repo");
+        repository = (BlobStoreRepository) getInstanceFromNode(RepositoriesService.class).repository("test-repo");
+    }
+
+    @Override
+    protected Settings nodeSettings() {
+        return Settings.builder()
+                .put(super.nodeSettings())
+                .setSecureSettings(credentials())
+                .build();
+    }
+
+    @Override
+    protected Collection<Class<? extends Plugin>> getPlugins() {
+        return pluginList(S3RepositoryPlugin.class);
+    }
+
+    private SecureSettings credentials() {
+        MockSecureSettings secureSettings = new MockSecureSettings();
+        secureSettings.setString("s3.client.default.access_key", getAccessKey());
+        secureSettings.setString("s3.client.default.secret_key", getSecretKey());
+        return secureSettings;
+    }
+
+    private void createRepository(String repoName) {
+        Settings.Builder settings = Settings.builder()
+                .put("bucket", getBucket())
+                .put("base_path", getBasePath())
+                .put("endpoint", getEndpoint());
+
+        AcknowledgedResponse putRepositoryResponse = client().admin().cluster()
+                .preparePutRepository(repoName)
+                .setType("s3")
+                .setSettings(settings).get();
+        assertThat(putRepositoryResponse.isAcknowledged(), equalTo(true));
+    }
+
+    private String getEndpoint() {
+        return System.getProperty("test.s3.endpoint");
+    }
+
+    private String getRegion() {
+        return "";
+    }
+
+    private String getBucket() {
+        return System.getProperty("test.s3.bucket");
+    }
+
+    private String getBasePath() {
+        return System.getProperty("test.s3.base");
+    }
+
+    private String getAccessKey() {
+        return System.getProperty("test.s3.account");
+    }
+
+    private String getSecretKey() {
+        return System.getProperty("test.s3.key");
+    }
+
+    private MockTerminal executeCommand(boolean abort) throws Exception {
+        return executeCommand(abort, Collections.emptyMap());
+    }
+
+    private MockTerminal executeCommand(boolean abort, Map<String, String> nonDefaultArguments) throws Exception {
+        final CleanupS3RepositoryCommand command = new CleanupS3RepositoryCommand();
+        final OptionSet options = command.getParser().parse(
+                "--safety_gap_millis", nonDefaultArguments.getOrDefault("safety_gap_millis", "0"),
+                "--parallelism", nonDefaultArguments.getOrDefault("parallelism", "10"),
+                "--endpoint", nonDefaultArguments.getOrDefault("endpoint", getEndpoint()),
+                "--region", nonDefaultArguments.getOrDefault("region", getRegion()),
+                "--bucket", nonDefaultArguments.getOrDefault("bucket", getBucket()),
+                "--base_path", nonDefaultArguments.getOrDefault("base_path", getBasePath()),
+                "--access_key", nonDefaultArguments.getOrDefault("access_key", getAccessKey()),
+                "--secret_key", nonDefaultArguments.getOrDefault("secret_key", getSecretKey()));
+        final MockTerminal terminal = new MockTerminal();
+        terminal.setVerbosity(Terminal.Verbosity.VERBOSE);
+        final String input;
+
+        if (abort) {
+            input = randomValueOtherThanMany(c -> c.equalsIgnoreCase("y"), () -> randomAlphaOfLength(1));
+        } else {
+            input = randomBoolean() ? "y" : "Y";
+        }
+
+        terminal.addTextInput(input);
+
+        try {
+            command.execute(terminal, options);
+        } catch (ElasticsearchException e) {
+            if (abort && e.getMessage().contains("Aborted by user")) {
+                return terminal;
+            } else {
+                throw e;
+            }
+        } finally {
+            logger.info("Cleanup command output:\n" + terminal.getOutput());
+        }
+
+        return terminal;
+    }
+
+    private void expectThrows(ThrowingRunnable runnable, String message) {
+        ElasticsearchException ex = expectThrows(ElasticsearchException.class, runnable);
+        assertThat(ex.getMessage(), containsString(message));
+    }
+
+    public void testNoRegionNoEndpoint() {
+        expectThrows(() ->
+                        executeCommand(false, Map.of("region", "", "endpoint", "")),
+                "region or endpoint option is required for cleaning up S3 repository");
+    }
+
+    public void testRegionAndEndpointSpecified() {
+        expectThrows(() ->
+                        executeCommand(false, Map.of("region", "test_region", "endpoint", "test_endpoint")),
+                "you must not specify both region and endpoint");
+    }
+
+    public void testNoBucket() {
+        expectThrows(() ->
+                executeCommand(false, Map.of("bucket", "")),
+                "bucket option is required for cleaning up S3 repository");
+    }
+
+    public void testNoAccessKey() {
+        expectThrows(() ->
+                executeCommand(false, Map.of("access_key", "")),
+                "access_key option is required for cleaning up S3 repository");
+    }
+
+    public void testNoSecretKey() {
+        expectThrows(() ->
+                        executeCommand(false, Map.of("secret_key", "")),
+                "secret_key option is required for cleaning up S3 repository");
+    }
+
+    public void testNegativeSafetyGap() {
+        expectThrows(() ->
+                        executeCommand(false, Map.of("safety_gap_millis", "-10")),
+                "safety_gap_millis should be non-negative");
+    }
+
+    public void testInvalidParallelism() {
+        expectThrows(() ->
+                executeCommand(false, Map.of("parallelism", "0")),
+                "parallelism should be at least 1");
+    }
+
+    public void testBasePathTrailingSlash() {
+        expectThrows(() ->
+                        executeCommand(false, Map.of("base_path", getBasePath() + "/")),
+                "there should be not trailing slash in the base path");
+    }
+
+    public void testCleanupS3() throws Exception {
+        logger.info("--> execute cleanup tool on empty repo, there is nothing to cleanup");
+        MockTerminal terminal = executeCommand(false);
+        assertThat(terminal.getOutput(), containsString("No index-N files found. Repository is empty or corrupted? Exiting"));
+
+        createIndex("test-idx-1");
+        createIndex("test-idx-2");
+        createIndex("test-idx-3");
+        ensureGreen();
+
+        logger.info("--> indexing some data");
+        for (int i = 0; i < 100; i++) {
+            client().prepareIndex("test-idx-1", "doc", Integer.toString(i)).setSource("foo", "bar" + i).get();
+            client().prepareIndex("test-idx-2", "doc", Integer.toString(i)).setSource("foo", "bar" + i).get();
+            client().prepareIndex("test-idx-3", "doc", Integer.toString(i)).setSource("foo", "bar" + i).get();
+        }
+        client().admin().indices().prepareRefresh().get();
+
+        // We run multiple iterations of snapshot -> corrupt -> cleanup -> verify -> delete snapshot
+        // to make sure cleanup tool works correctly regardless of index.latest value
+        for (int i = 1; i <= randomIntBetween(1, 3); i++) {
+            logger.info("Iteration number {}", i);
+            logger.info("--> create first snapshot");
+            CreateSnapshotResponse createSnapshotResponse = client().admin()
+                    .cluster()
+                    .prepareCreateSnapshot("test-repo", "snap1")
+                    .setWaitForCompletion(true)
+                    .setIndices("test-idx-*", "-test-idx-3")
+                    .get();
+            assertThat(createSnapshotResponse.getSnapshotInfo().successfulShards(), greaterThan(0));
+            assertThat(createSnapshotResponse.getSnapshotInfo().successfulShards(),
+                    equalTo(createSnapshotResponse.getSnapshotInfo().totalShards()));
+
+            assertThat(client().admin()
+                            .cluster()
+                            .prepareGetSnapshots("test-repo")
+                            .setSnapshots("snap1")
+                            .get()
+                            .getSnapshots("test-repo")
+                            .get(0)
+                            .state(),
+                    equalTo(SnapshotState.SUCCESS));
+
+
+            logger.info("--> execute cleanup tool, there is nothing to cleanup");
+            terminal = executeCommand(false);
+            assertThat(terminal.getOutput(), containsString("Set of deletion candidates is empty. Exiting"));
+
+            logger.info("--> check that there is no inconsistencies after running the tool");
+            BlobStoreTestUtil.assertConsistency(repository, repository.threadPool().executor(ThreadPool.Names.GENERIC));
+
+            logger.info("--> create several dangling indices");
+            int numOfFiles = 0;
+            long size = 0L;
+            Map<String, Set<String>> indexToFiles = new TreeMap<>();
+            for (int j = 0; j < randomIntBetween(1, 5); j++) {
+                String name = randomValueOtherThanMany(n -> indexToFiles.containsKey(n), () -> randomAlphaOfLength(5));
+                Set<String> files = new TreeSet<>();
+                indexToFiles.put(name, files);
+                for (int k = 0; k < randomIntBetween(1, 5); k++) {
+                    String file = randomValueOtherThanMany(f -> files.contains(f), () -> randomAlphaOfLength(6));
+                    files.add(file);
+                    numOfFiles++;
+                }
+                size += BlobStoreTestUtil.createDanglingIndex(repository, name, files);
+            }
+            Set<String> danglingIndices = indexToFiles.keySet();
+
+            logger.info("--> ensure dangling index folders are visible");
+            assertBusy(() -> BlobStoreTestUtil.assertCorruptionVisible(repository, indexToFiles), 10L, TimeUnit.MINUTES);
+
+            logger.info("--> execute cleanup tool, corruption is created latter than snapshot, there is nothing to cleanup");
+            terminal = executeCommand(false);
+            assertThat(terminal.getOutput(), containsString("Set of orphaned indices is empty. Exiting"));
+
+            logger.info("--> create second snapshot");
+            createSnapshotResponse = client().admin()
+                    .cluster()
+                    .prepareCreateSnapshot("test-repo", "snap2")
+                    .setWaitForCompletion(true)
+                    .setIndices("test-idx-*", "-test-idx-3")
+                    .get();
+            assertThat(createSnapshotResponse.getSnapshotInfo().successfulShards(), greaterThan(0));
+            assertThat(createSnapshotResponse.getSnapshotInfo().successfulShards(),
+                    equalTo(createSnapshotResponse.getSnapshotInfo().totalShards()));
+
+            logger.info("--> execute cleanup tool again and abort");
+            terminal = executeCommand(true);
+            assertThat(terminal.getOutput(),
+                    containsString("Set of deletion candidates has " + danglingIndices.size() + " elements: " + danglingIndices));
+            assertThat(terminal.getOutput(),
+                    containsString("Set of orphaned indices has " + danglingIndices.size() + " elements: " + danglingIndices));
+            assertThat(terminal.getOutput(), containsString("This action is NOT REVERSIBLE"));
+            for (String index : indexToFiles.keySet()) {
+                assertThat(terminal.getOutput(), not(containsString("Removing orphaned index " + index)));
+            }
+
+            logger.info("--> execute cleanup tool again and confirm, dangling indices should go");
+            terminal = executeCommand(false);
+            assertThat(terminal.getOutput(),
+                    containsString("Set of deletion candidates has " + danglingIndices.size() + " elements: " + danglingIndices));
+            assertThat(terminal.getOutput(),
+                    containsString("Set of orphaned indices has " + danglingIndices.size() + " elements: " + danglingIndices));
+            assertThat(terminal.getOutput(), containsString("This action is NOT REVERSIBLE"));
+            for (String index : indexToFiles.keySet()) {
+                assertThat(terminal.getOutput(), containsString("Removing orphaned index " + index));
+                for (String file : indexToFiles.get(index)) {
+                    assertThat(terminal.getOutput(), containsString(index + "/" + file));
+                }
+            }
+            assertThat(terminal.getOutput(),
+                    containsString("Total files removed: " + numOfFiles));
+            assertThat(terminal.getOutput(),
+                    containsString("Total bytes freed: " + size));
+
+            logger.info("--> verify that there is no inconsistencies");
+            assertBusy(() -> BlobStoreTestUtil.assertConsistency(repository, repository.threadPool().executor(ThreadPool.Names.GENERIC)),
+                10L, TimeUnit.MINUTES);
+
+            logger.info("--> perform cleanup by removing snapshots");
+            assertTrue(client().admin()
+                    .cluster()
+                    .prepareDeleteSnapshot("test-repo", "snap1")
+                    .get()
+                    .isAcknowledged());
+            assertTrue(client().admin()
+                    .cluster()
+                    .prepareDeleteSnapshot("test-repo", "snap2")
+                    .get()
+                    .isAcknowledged());
+        }
+    }
+}