spring ElasticsearchRestClientHealthIndicator 源码
springboot ElasticsearchRestClientHealthIndicator 代码
文件路径：/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/elasticsearch/ElasticsearchRestClientHealthIndicator.java
/*
* Copyright 2012-2022 the original author or authors.
*
* 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
*
* https://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.springframework.boot.actuate.elasticsearch;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import java.util.Map;
import org.apache.http.HttpStatus;
import org.apache.http.StatusLine;
import org.elasticsearch.client.Request;
import org.elasticsearch.client.Response;
import org.elasticsearch.client.RestClient;
import org.springframework.boot.actuate.health.AbstractHealthIndicator;
import org.springframework.boot.actuate.health.Health;
import org.springframework.boot.actuate.health.HealthIndicator;
import org.springframework.boot.json.JsonParser;
import org.springframework.boot.json.JsonParserFactory;
import org.springframework.util.StreamUtils;
/**
* {@link HealthIndicator} for an Elasticsearch cluster using a {@link RestClient}.
*
* @author Artsiom Yudovin
* @author Brian Clozel
* @author Filip Hrisafov
* @since 2.7.0
*/
public class ElasticsearchRestClientHealthIndicator extends AbstractHealthIndicator {
private static final String RED_STATUS = "red";
private final RestClient client;
private final JsonParser jsonParser;
public ElasticsearchRestClientHealthIndicator(RestClient client) {
super("Elasticsearch health check failed");
this.client = client;
this.jsonParser = JsonParserFactory.getJsonParser();
}
@Override
protected void doHealthCheck(Health.Builder builder) throws Exception {
Response response = this.client.performRequest(new Request("GET", "/_cluster/health/"));
StatusLine statusLine = response.getStatusLine();
if (statusLine.getStatusCode() != HttpStatus.SC_OK) {
builder.down();
builder.withDetail("statusCode", statusLine.getStatusCode());
builder.withDetail("reasonPhrase", statusLine.getReasonPhrase());
return;
}
try (InputStream inputStream = response.getEntity().getContent()) {
doHealthCheck(builder, StreamUtils.copyToString(inputStream, StandardCharsets.UTF_8));
}
}
private void doHealthCheck(Health.Builder builder, String json) {
Map<String, Object> response = this.jsonParser.parseMap(json);
String status = (String) response.get("status");
if (RED_STATUS.equals(status)) {
builder.outOfService();
}
else {
builder.up();
}
builder.withDetails(response);
}
}
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- 本文标签： Spring Boot Java Spring
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