Remove global `repositories.azure` settings

Today we have multiple ways to define settings when a user needs to create a repository:

* in `elasticsearch.yml` file using `repositories.azure` prefix
* when creating the repository itself with `PUT _snaphot/repo`

The plan is to:

* Deprecate `repositories.azure` settings in 5.x (done with #22856)
* Remove in 6.x (this PR)

Related to #22800

docs/plugins/repository-azure.asciidoc

@@ -185,22 +185,6 @@ client.admin().cluster().preparePutRepository("my_backup_java1")
     ).get();
 ----
 
-[[repository-azure-global-settings]]
-===== Global repositories settings
-
-All those repository settings can also be defined globally in `elasticsearch.yml` file using prefix
-`repositories.azure.`. For example:
-
-[source,yaml]
-----
-repositories.azure:
-    container: backup-container
-    base_path: backups
-    chunk_size: 32m
-    compress": true
-----
-
-
 [[repository-azure-validation]]
 ===== Repository validation rules
 

docs/reference/migration/migrate_6_0/plugins.asciidoc

@@ -25,3 +25,11 @@ the region of the configured bucket.
 
 * The container an azure repository is configured with will no longer be created automatically.
 It must exist before the azure repository is created.
+
+* Global repositories settings you are able to set in elasticsearch config file under `repositories.azure`
+name space have been removed. This includes `repositories.azure.account`, `repositories.azure.container`,
+`repositories.azure.base_path`, `repositories.azure.location_mode`, `repositories.azure.chunk_size` and
+`repositories.azure.compress`.
+You must set those settings per repository instead. Respectively `account`, `container`, `base_path`,
+`location_mode`, `chunk_size` and `compress`.
+See {plugins}/repository-azure-usage.html#repository-azure-repository-settings[Azure Repository settings].

plugins/repository-azure/src/main/java/org/elasticsearch/cloud/azure/blobstore/AzureBlobStore.java

@@ -39,7 +39,6 @@ import java.net.URISyntaxException;
 import java.util.Locale;
 import java.util.Map;
 
-import static org.elasticsearch.cloud.azure.storage.AzureStorageSettings.getValue;
 import static org.elasticsearch.repositories.azure.AzureRepository.Repository;
 
 public class AzureBlobStore extends AbstractComponent implements BlobStore {
@@ -55,11 +54,11 @@ public class AzureBlobStore extends AbstractComponent implements BlobStore {
                           AzureStorageService client) throws URISyntaxException, StorageException {
         super(settings);
         this.client = client;
-        this.container = getValue(metadata.settings(), settings, Repository.CONTAINER_SETTING, Storage.CONTAINER_SETTING);
+        this.container = Repository.CONTAINER_SETTING.get(metadata.settings());
         this.repositoryName = metadata.name();
-        this.accountName = getValue(metadata.settings(), settings, Repository.ACCOUNT_SETTING, Storage.ACCOUNT_SETTING);
+        this.accountName = Repository.ACCOUNT_SETTING.get(metadata.settings());
 
-        String modeStr = getValue(metadata.settings(), settings, Repository.LOCATION_MODE_SETTING, Storage.LOCATION_MODE_SETTING);
+        String modeStr = Repository.LOCATION_MODE_SETTING.get(metadata.settings());
         if (Strings.hasLength(modeStr)) {
             this.locMode = LocationMode.valueOf(modeStr.toUpperCase(Locale.ROOT));
         } else {

plugins/repository-azure/src/main/java/org/elasticsearch/cloud/azure/storage/AzureStorageService.java

@@ -21,7 +21,6 @@ package org.elasticsearch.cloud.azure.storage;
 
 import com.microsoft.azure.storage.LocationMode;
 import com.microsoft.azure.storage.StorageException;
-
 import org.elasticsearch.common.blobstore.BlobMetaData;
 import org.elasticsearch.common.settings.Setting;
 import org.elasticsearch.common.settings.Setting.Property;
@@ -35,7 +34,6 @@ import java.io.InputStream;
 import java.io.OutputStream;
 import java.net.URISyntaxException;
 import java.util.Map;
-import java.util.function.Function;
 
 /**
  * Azure Storage Service interface
@@ -53,18 +51,6 @@ public interface AzureStorageService {
 
         public static final Setting<TimeValue> TIMEOUT_SETTING =
             Setting.timeSetting("cloud.azure.storage.timeout", TimeValue.timeValueMinutes(-1), Property.NodeScope);
-        public static final Setting<String> ACCOUNT_SETTING =
-            Setting.simpleString("repositories.azure.account", Property.NodeScope, Property.Filtered);
-        public static final Setting<String> CONTAINER_SETTING =
-            new Setting<>("repositories.azure.container", "elasticsearch-snapshots", Function.identity(), Property.NodeScope);
-        public static final Setting<String> BASE_PATH_SETTING =
-            Setting.simpleString("repositories.azure.base_path", Property.NodeScope);
-        public static final Setting<String> LOCATION_MODE_SETTING =
-            Setting.simpleString("repositories.azure.location_mode", Property.NodeScope);
-        public static final Setting<ByteSizeValue> CHUNK_SIZE_SETTING =
-            Setting.byteSizeSetting("repositories.azure.chunk_size", MAX_CHUNK_SIZE, MIN_CHUNK_SIZE, MAX_CHUNK_SIZE, Property.NodeScope);
-        public static final Setting<Boolean> COMPRESS_SETTING =
-            Setting.boolSetting("repositories.azure.compress", false, Property.NodeScope);
     }
 
     boolean doesContainerExist(String account, LocationMode mode, String container);

plugins/repository-azure/src/main/java/org/elasticsearch/cloud/azure/storage/AzureStorageSettings.java

@@ -25,14 +25,12 @@ import org.elasticsearch.common.settings.Setting;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.common.settings.SettingsException;
 import org.elasticsearch.common.unit.TimeValue;
-import org.elasticsearch.node.Node;
 
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.function.Function;
 
 public final class AzureStorageSettings {
     private static final Setting<TimeValue> TIMEOUT_SETTING = Setting.affixKeySetting(Storage.PREFIX, "timeout",
@@ -161,25 +159,4 @@ public final class AzureStorageSettings {
         }
         return Collections.unmodifiableMap(secondaries);
     }
-
-    public static <T> T getValue(Settings repositorySettings,
-                                 Settings globalSettings,
-                                 Setting<T> repositorySetting,
-                                 Setting<T> repositoriesSetting) {
-        if (repositorySetting.exists(repositorySettings)) {
-            return repositorySetting.get(repositorySettings);
-        } else {
-            return repositoriesSetting.get(globalSettings);
-        }
-    }
-
-    public static <T> Setting<T> getEffectiveSetting(Settings repositorySettings,
-                                              Setting<T> repositorySetting,
-                                              Setting<T> repositoriesSetting) {
-        if (repositorySetting.exists(repositorySettings)) {
-            return repositorySetting;
-        } else {
-            return repositoriesSetting;
-        }
-    }
 }

plugins/repository-azure/src/main/java/org/elasticsearch/plugin/repository/azure/AzureRepositoryPlugin.java

@@ -53,13 +53,7 @@ public class AzureRepositoryPlugin extends Plugin implements RepositoryPlugin {
 
     @Override
     public List<Setting<?>> getSettings() {
-        return Arrays.asList(AzureStorageService.Storage.STORAGE_ACCOUNTS,
-                AzureStorageService.Storage.ACCOUNT_SETTING,
-                AzureStorageService.Storage.COMPRESS_SETTING,
-                AzureStorageService.Storage.CONTAINER_SETTING,
-                AzureStorageService.Storage.BASE_PATH_SETTING,
-                AzureStorageService.Storage.CHUNK_SIZE_SETTING,
-                AzureStorageService.Storage.LOCATION_MODE_SETTING);
+        return Collections.singletonList(AzureStorageService.Storage.STORAGE_ACCOUNTS);
     }
 
     @Override

plugins/repository-azure/src/main/java/org/elasticsearch/repositories/azure/AzureRepository.java

@@ -23,7 +23,6 @@ import com.microsoft.azure.storage.LocationMode;
 import com.microsoft.azure.storage.StorageException;
 import org.elasticsearch.cloud.azure.blobstore.AzureBlobStore;
 import org.elasticsearch.cloud.azure.storage.AzureStorageService;
-import org.elasticsearch.cloud.azure.storage.AzureStorageService.Storage;
 import org.elasticsearch.cluster.metadata.MetaData;
 import org.elasticsearch.cluster.metadata.RepositoryMetaData;
 import org.elasticsearch.common.Strings;
@@ -46,7 +45,6 @@ import java.util.function.Function;
 
 import static org.elasticsearch.cloud.azure.storage.AzureStorageService.MAX_CHUNK_SIZE;
 import static org.elasticsearch.cloud.azure.storage.AzureStorageService.MIN_CHUNK_SIZE;
-import static org.elasticsearch.cloud.azure.storage.AzureStorageSettings.getValue;
 
 /**
  * Azure file system implementation of the BlobStoreRepository
@@ -86,10 +84,10 @@ public class AzureRepository extends BlobStoreRepository {
         super(metadata, environment.settings(), namedXContentRegistry);
 
         blobStore = new AzureBlobStore(metadata, environment.settings(), storageService);
-        String container = getValue(metadata.settings(), settings, Repository.CONTAINER_SETTING, Storage.CONTAINER_SETTING);
-        this.chunkSize = getValue(metadata.settings(), settings, Repository.CHUNK_SIZE_SETTING, Storage.CHUNK_SIZE_SETTING);
-        this.compress = getValue(metadata.settings(), settings, Repository.COMPRESS_SETTING, Storage.COMPRESS_SETTING);
-        String modeStr = getValue(metadata.settings(), settings, Repository.LOCATION_MODE_SETTING, Storage.LOCATION_MODE_SETTING);
+        String container = Repository.CONTAINER_SETTING.get(metadata.settings());
+        this.chunkSize = Repository.CHUNK_SIZE_SETTING.get(metadata.settings());
+        this.compress = Repository.COMPRESS_SETTING.get(metadata.settings());
+        String modeStr = Repository.LOCATION_MODE_SETTING.get(metadata.settings());
         Boolean forcedReadonly = metadata.settings().getAsBoolean("readonly", null);
         // If the user explicitly did not define a readonly value, we set it by ourselves depending on the location mode setting.
         // For secondary_only setting, the repository should be read only
@@ -104,7 +102,7 @@ public class AzureRepository extends BlobStoreRepository {
             readonly = forcedReadonly;
         }
 
-        String basePath = getValue(metadata.settings(), settings, Repository.BASE_PATH_SETTING, Storage.BASE_PATH_SETTING);
+        String basePath = Repository.BASE_PATH_SETTING.get(metadata.settings());
 
         if (Strings.hasLength(basePath)) {
             // Remove starting / if any