HLRestClient: Follow-up for put index template api (#30592)

This commit addresses some comments given after the original PR was in.

Follow-up #30400

server/src/main/java/org/elasticsearch/action/admin/indices/template/put/PutIndexTemplateRequest.java

@@ -37,6 +37,7 @@
 import org.elasticsearch.common.logging.DeprecationLogger;
 import org.elasticsearch.common.logging.Loggers;
 import org.elasticsearch.common.settings.Settings;
+import org.elasticsearch.common.xcontent.DeprecationHandler;
 import org.elasticsearch.common.xcontent.LoggingDeprecationHandler;
 import org.elasticsearch.common.xcontent.NamedXContentRegistry;
 import org.elasticsearch.common.xcontent.ToXContent;
@@ -45,6 +46,7 @@
 import org.elasticsearch.common.xcontent.XContentHelper;
 import org.elasticsearch.common.xcontent.XContentParser;
 import org.elasticsearch.common.xcontent.XContentType;
+import org.elasticsearch.common.xcontent.json.JsonXContent;
 import org.elasticsearch.common.xcontent.support.XContentMapValues;
 
 import java.io.IOException;
@@ -543,9 +545,6 @@ public void writeTo(StreamOutput out) throws IOException {
 
     @Override
     public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
-        if (customs.isEmpty() == false) {
-            throw new IllegalArgumentException("Custom data type is no longer supported in index template [" + customs + "]");
-        }
         builder.field("index_patterns", indexPatterns);
         builder.field("order", order);
         if (version != null) {
@@ -558,8 +557,10 @@ public XContentBuilder toXContent(XContentBuilder builder, Params params) throws
 
         builder.startObject("mappings");
         for (Map.Entry<String, String> entry : mappings.entrySet()) {
-            Map<String, Object> mapping = XContentHelper.convertToMap(new BytesArray(entry.getValue()), false).v2();
-            builder.field(entry.getKey(), mapping);
+            builder.field(entry.getKey());
+            XContentParser parser = JsonXContent.jsonXContent.createParser(NamedXContentRegistry.EMPTY,
+                DeprecationHandler.THROW_UNSUPPORTED_OPERATION, entry.getValue());
+            builder.copyCurrentStructure(parser);
         }
         builder.endObject();
 
@@ -568,6 +569,11 @@ public XContentBuilder toXContent(XContentBuilder builder, Params params) throws
             alias.toXContent(builder, params);
         }
         builder.endObject();
+
+        for (Map.Entry<String, IndexMetaData.Custom> entry : customs.entrySet()) {
+            builder.field(entry.getKey(), entry.getValue(), params);
+        }
+
         return builder;
     }
 }

server/src/test/java/org/elasticsearch/action/admin/indices/template/put/PutIndexTemplateRequestTests.java

@@ -23,18 +23,18 @@
 import org.elasticsearch.action.admin.indices.alias.Alias;
 import org.elasticsearch.common.Strings;
 import org.elasticsearch.common.bytes.BytesArray;
-import org.elasticsearch.common.bytes.BytesReference;
 import org.elasticsearch.common.io.stream.BytesStreamOutput;
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.settings.Settings;
-import org.elasticsearch.common.xcontent.ToXContent;
 import org.elasticsearch.common.xcontent.XContentFactory;
 import org.elasticsearch.common.xcontent.XContentHelper;
+import org.elasticsearch.common.xcontent.XContentParser;
 import org.elasticsearch.common.xcontent.XContentType;
 import org.elasticsearch.common.xcontent.yaml.YamlXContent;
-import org.elasticsearch.test.ESTestCase;
+import org.elasticsearch.test.AbstractXContentTestCase;
 
 import java.io.IOException;
+import java.io.UncheckedIOException;
 import java.util.Arrays;
 import java.util.Base64;
 import java.util.Collections;
@@ -45,7 +45,7 @@
 import static org.hamcrest.Matchers.nullValue;
 import static org.hamcrest.core.Is.is;
 
-public class PutIndexTemplateRequestTests extends ESTestCase {
+public class PutIndexTemplateRequestTests extends AbstractXContentTestCase<PutIndexTemplateRequest> {
 
     // bwc for #21009
     public void testPutIndexTemplateRequest510() throws IOException {
@@ -137,13 +137,14 @@ public void testValidateErrorMessage() throws Exception {
         assertThat(noError, is(nullValue()));
     }
 
-    private PutIndexTemplateRequest randomPutIndexTemplateRequest() throws IOException {
+    @Override
+    protected PutIndexTemplateRequest createTestInstance() {
         PutIndexTemplateRequest request = new PutIndexTemplateRequest();
         request.name("test");
-        if (randomBoolean()){
+        if (randomBoolean()) {
             request.version(randomInt());
         }
-        if (randomBoolean()){
+        if (randomBoolean()) {
             request.order(randomInt());
         }
         request.patterns(Arrays.asList(generateRandomStringArray(20, 100, false, false)));
@@ -159,30 +160,39 @@ private PutIndexTemplateRequest randomPutIndexTemplateRequest() throws IOExcepti
             request.alias(alias);
         }
         if (randomBoolean()) {
-            request.mapping("doc", XContentFactory.jsonBuilder().startObject()
-                .startObject("doc").startObject("properties")
-                .startObject("field-" + randomInt()).field("type", randomFrom("keyword", "text")).endObject()
-                .endObject().endObject().endObject());
+            try {
+                request.mapping("doc", XContentFactory.jsonBuilder().startObject()
+                    .startObject("doc").startObject("properties")
+                    .startObject("field-" + randomInt()).field("type", randomFrom("keyword", "text")).endObject()
+                    .endObject().endObject().endObject());
+            } catch (IOException ex) {
+                throw new UncheckedIOException(ex);
+            }
         }
-        if (randomBoolean()){
+        if (randomBoolean()) {
             request.settings(Settings.builder().put("setting1", randomLong()).put("setting2", randomTimeValue()).build());
         }
         return request;
     }
 
-    public void testFromToXContentPutTemplateRequest() throws Exception {
-        for (int i = 0; i < 10; i++) {
-            PutIndexTemplateRequest expected = randomPutIndexTemplateRequest();
-            XContentType xContentType = randomFrom(XContentType.values());
-            BytesReference shuffled = toShuffledXContent(expected, xContentType, ToXContent.EMPTY_PARAMS, randomBoolean());
-            PutIndexTemplateRequest parsed = new PutIndexTemplateRequest().source(shuffled, xContentType);
-            assertNotSame(expected, parsed);
-            assertThat(parsed.version(), equalTo(expected.version()));
-            assertThat(parsed.order(), equalTo(expected.order()));
-            assertThat(parsed.patterns(), equalTo(expected.patterns()));
-            assertThat(parsed.aliases(), equalTo(expected.aliases()));
-            assertThat(parsed.mappings(), equalTo(expected.mappings()));
-            assertThat(parsed.settings(), equalTo(expected.settings()));
-        }
+    @Override
+    protected PutIndexTemplateRequest doParseInstance(XContentParser parser) throws IOException {
+        return new PutIndexTemplateRequest().source(parser.map());
+    }
+
+    @Override
+    protected void assertEqualInstances(PutIndexTemplateRequest expected, PutIndexTemplateRequest actual) {
+        assertNotSame(expected, actual);
+        assertThat(actual.version(), equalTo(expected.version()));
+        assertThat(actual.order(), equalTo(expected.order()));
+        assertThat(actual.patterns(), equalTo(expected.patterns()));
+        assertThat(actual.aliases(), equalTo(expected.aliases()));
+        assertThat(actual.mappings(), equalTo(expected.mappings()));
+        assertThat(actual.settings(), equalTo(expected.settings()));
+    }
+
+    @Override
+    protected boolean supportsUnknownFields() {
+        return false;
     }
 }

server/src/test/java/org/elasticsearch/action/admin/indices/template/put/PutIndexTemplateResponseTests.java

@@ -0,0 +1,45 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you 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.
+ */
+
+package org.elasticsearch.action.admin.indices.template.put;
+
+import org.elasticsearch.common.xcontent.XContentParser;
+import org.elasticsearch.test.AbstractStreamableXContentTestCase;
+
+public class PutIndexTemplateResponseTests extends AbstractStreamableXContentTestCase<PutIndexTemplateResponse> {
+    @Override
+    protected PutIndexTemplateResponse doParseInstance(XContentParser parser) {
+        return PutIndexTemplateResponse.fromXContent(parser);
+    }
+
+    @Override
+    protected PutIndexTemplateResponse createTestInstance() {
+        return new PutIndexTemplateResponse(randomBoolean());
+    }
+
+    @Override
+    protected PutIndexTemplateResponse createBlankInstance() {
+        return new PutIndexTemplateResponse();
+    }
+
+    @Override
+    protected PutIndexTemplateResponse mutateInstance(PutIndexTemplateResponse response) {
+        return new PutIndexTemplateResponse(response.isAcknowledged() == false);
+    }
+}