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* 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.client;
import org.apache.http.HttpEntity;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.elasticsearch.common.ParseField;
import org.elasticsearch.common.xcontent.NamedXContentRegistry;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.test.ESTestCase;
import org.junit.Before;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import static org.hamcrest.CoreMatchers.instanceOf;
import static org.mockito.Mockito.mock;
/**
* This test works against a {@link RestHighLevelClient} subclass that simulats how custom response sections returned by
* Elasticsearch plugins can be parsed using the high level client.
*/
public class RestHighLevelClientExtTests extends ESTestCase {
private RestHighLevelClient restHighLevelClient;
@Before
public void initClient() throws IOException {
RestClient restClient = mock(RestClient.class);
restHighLevelClient = new RestHighLevelClientExt(restClient);
}
public void testParseEntityCustomResponseSection() throws IOException {
{
HttpEntity jsonEntity = new StringEntity("{\"custom1\":{ \"field\":\"value\"}}", ContentType.APPLICATION_JSON);
BaseCustomResponseSection customSection = restHighLevelClient.parseEntity(jsonEntity, BaseCustomResponseSection::fromXContent);
assertThat(customSection, instanceOf(CustomResponseSection1.class));
CustomResponseSection1 customResponseSection1 = (CustomResponseSection1) customSection;
assertEquals("value", customResponseSection1.value);
}
{
HttpEntity jsonEntity = new StringEntity("{\"custom2\":{ \"array\": [\"item1\", \"item2\"]}}", ContentType.APPLICATION_JSON);
BaseCustomResponseSection customSection = restHighLevelClient.parseEntity(jsonEntity, BaseCustomResponseSection::fromXContent);
assertThat(customSection, instanceOf(CustomResponseSection2.class));
CustomResponseSection2 customResponseSection2 = (CustomResponseSection2) customSection;
assertArrayEquals(new String[]{"item1", "item2"}, customResponseSection2.values);
}
}
private static class RestHighLevelClientExt extends RestHighLevelClient {
private RestHighLevelClientExt(RestClient restClient) {
super(restClient, getNamedXContentsExt());
}
private static List<NamedXContentRegistry.Entry> getNamedXContentsExt() {
List<NamedXContentRegistry.Entry> entries = new ArrayList<>();
entries.add(new NamedXContentRegistry.Entry(BaseCustomResponseSection.class, new ParseField("custom1"),
CustomResponseSection1::fromXContent));
entries.add(new NamedXContentRegistry.Entry(BaseCustomResponseSection.class, new ParseField("custom2"),
CustomResponseSection2::fromXContent));
return entries;
}
}
private abstract static class BaseCustomResponseSection {
static BaseCustomResponseSection fromXContent(XContentParser parser) throws IOException {
assertEquals(XContentParser.Token.START_OBJECT, parser.nextToken());
assertEquals(XContentParser.Token.FIELD_NAME, parser.nextToken());
BaseCustomResponseSection custom = parser.namedObject(BaseCustomResponseSection.class, parser.currentName(), null);
assertEquals(XContentParser.Token.END_OBJECT, parser.nextToken());
return custom;
}
}
private static class CustomResponseSection1 extends BaseCustomResponseSection {
private final String value;
private CustomResponseSection1(String value) {
this.value = value;
}
static CustomResponseSection1 fromXContent(XContentParser parser) throws IOException {
assertEquals(XContentParser.Token.START_OBJECT, parser.nextToken());
assertEquals(XContentParser.Token.FIELD_NAME, parser.nextToken());
assertEquals("field", parser.currentName());
assertEquals(XContentParser.Token.VALUE_STRING, parser.nextToken());
CustomResponseSection1 responseSection1 = new CustomResponseSection1(parser.text());
assertEquals(XContentParser.Token.END_OBJECT, parser.nextToken());
return responseSection1;
}
}
private static class CustomResponseSection2 extends BaseCustomResponseSection {
private final String[] values;
private CustomResponseSection2(String[] values) {
this.values = values;
}
static CustomResponseSection2 fromXContent(XContentParser parser) throws IOException {
assertEquals(XContentParser.Token.START_OBJECT, parser.nextToken());
assertEquals(XContentParser.Token.FIELD_NAME, parser.nextToken());
assertEquals("array", parser.currentName());
assertEquals(XContentParser.Token.START_ARRAY, parser.nextToken());
List<String> values = new ArrayList<>();
while(parser.nextToken().isValue()) {
values.add(parser.text());
}
assertEquals(XContentParser.Token.END_ARRAY, parser.currentToken());
CustomResponseSection2 responseSection2 = new CustomResponseSection2(values.toArray(new String[values.size()]));
assertEquals(XContentParser.Token.END_OBJECT, parser.nextToken());
return responseSection2;
}
}
}