Accept more ingest simulate params as ints or strings (#66197)

_version, _if_seq_no and _if_primary_term params in the simulate pipeline API cannot be parsed correctly when the value is integer orstring type.

This PR fix the bug and modify the test method to test it.

server/src/main/java/org/elasticsearch/action/ingest/SimulatePipelineRequest.java

@@ -186,7 +186,13 @@ public class SimulatePipelineRequest extends ActionRequest implements ToXContent
                 dataMap, Metadata.ROUTING.getFieldName());
             Long version = null;
             if (dataMap.containsKey(Metadata.VERSION.getFieldName())) {
-                version = (Long) ConfigurationUtils.readObject(null, null, dataMap, Metadata.VERSION.getFieldName());
+                String versionValue = ConfigurationUtils.readOptionalStringOrIntProperty(null, null,
+                    dataMap, Metadata.VERSION.getFieldName());
+                if (versionValue != null) {
+                    version = Long.valueOf(versionValue);
+                } else {
+                    throw new IllegalArgumentException("[_version] cannot be null");
+                }
             }
             VersionType versionType = null;
             if (dataMap.containsKey(Metadata.VERSION_TYPE.getFieldName())) {
@@ -196,12 +202,24 @@ public class SimulatePipelineRequest extends ActionRequest implements ToXContent
             IngestDocument ingestDocument =
                 new IngestDocument(index, id, routing, version, versionType, document);
             if (dataMap.containsKey(Metadata.IF_SEQ_NO.getFieldName())) {
-                Long ifSeqNo = (Long) ConfigurationUtils.readObject(null, null, dataMap, Metadata.IF_SEQ_NO.getFieldName());
-                ingestDocument.setFieldValue(Metadata.IF_SEQ_NO.getFieldName(), ifSeqNo);
+                String ifSeqNoValue = ConfigurationUtils.readOptionalStringOrIntProperty(null, null,
+                    dataMap, Metadata.IF_SEQ_NO.getFieldName());
+                if (ifSeqNoValue != null) {
+                    Long ifSeqNo = Long.valueOf(ifSeqNoValue);
+                    ingestDocument.setFieldValue(Metadata.IF_SEQ_NO.getFieldName(), ifSeqNo);
+                } else {
+                    throw new IllegalArgumentException("[_if_seq_no] cannot be null");
+                }
             }
             if (dataMap.containsKey(Metadata.IF_PRIMARY_TERM.getFieldName())) {
-                Long ifPrimaryTerm = (Long) ConfigurationUtils.readObject(null, null, dataMap, Metadata.IF_PRIMARY_TERM.getFieldName());
-                ingestDocument.setFieldValue(Metadata.IF_PRIMARY_TERM.getFieldName(), ifPrimaryTerm);
+                String ifPrimaryTermValue = ConfigurationUtils.readOptionalStringOrIntProperty(null, null,
+                    dataMap, Metadata.IF_PRIMARY_TERM.getFieldName());
+                if (ifPrimaryTermValue != null) {
+                    Long ifPrimaryTerm = Long.valueOf(ifPrimaryTermValue);
+                    ingestDocument.setFieldValue(Metadata.IF_PRIMARY_TERM.getFieldName(), ifPrimaryTerm);
+                } else {
+                    throw new IllegalArgumentException("[_if_primary_term] cannot be null");
+                }
             }
             ingestDocumentList.add(ingestDocument);
         }

server/src/test/java/org/elasticsearch/action/ingest/SimulatePipelineRequestParsingTests.java

@@ -124,20 +124,12 @@ public class SimulatePipelineRequestParsingTests extends ESTestCase {
             Map<String, Object> expectedDoc = new HashMap<>();
             List<IngestDocument.Metadata> fields = Arrays.asList(INDEX, ID, ROUTING, VERSION, VERSION_TYPE, IF_SEQ_NO, IF_PRIMARY_TERM);
             for(IngestDocument.Metadata field : fields) {
-                if (field == VERSION) {
-                    Long value = randomLong();
-                    doc.put(field.getFieldName(), value);
-                    expectedDoc.put(field.getFieldName(), value);
-                } else if (field == VERSION_TYPE) {
+                if (field == VERSION_TYPE) {
                     String value = VersionType.toString(
                         randomFrom(VersionType.INTERNAL, VersionType.EXTERNAL, VersionType.EXTERNAL_GTE)
                     );
                     doc.put(field.getFieldName(), value);
                     expectedDoc.put(field.getFieldName(), value);
-                } else if (field == IF_SEQ_NO || field == IF_PRIMARY_TERM) {
-                    Long value = randomNonNegativeLong();
-                    doc.put(field.getFieldName(), value);
-                    expectedDoc.put(field.getFieldName(), value);
                 } else {
                     if (randomBoolean()) {
                         String value = randomAlphaOfLengthBetween(1, 10);