org.springframework.boot.actuate.elasticsearch.ElasticsearchHealthIndicator Maven / Gradle / Ivy
/*
* Copyright 2012-2018 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.util.List;
import org.elasticsearch.action.admin.cluster.health.ClusterHealthRequest;
import org.elasticsearch.action.admin.cluster.health.ClusterHealthResponse;
import org.elasticsearch.client.Client;
import org.elasticsearch.client.Requests;
import org.springframework.boot.actuate.health.AbstractHealthIndicator;
import org.springframework.boot.actuate.health.Health;
import org.springframework.boot.actuate.health.HealthIndicator;
import org.springframework.util.ObjectUtils;
import org.springframework.util.StringUtils;
/**
* {@link HealthIndicator} for an Elasticsearch cluster.
*
* @author Binwei Yang
* @author Andy Wilkinson
* @since 2.0.0
*/
public class ElasticsearchHealthIndicator extends AbstractHealthIndicator {
private static final String[] ALL_INDICES = { "_all" };
private final Client client;
private final String[] indices;
private final long responseTimeout;
/**
* Create a new {@link ElasticsearchHealthIndicator} instance.
* @param client the Elasticsearch client
* @param responseTimeout the request timeout in milliseconds
* @param indices the indices to check
*/
public ElasticsearchHealthIndicator(Client client, long responseTimeout,
List indices) {
this(client, responseTimeout,
(indices != null) ? StringUtils.toStringArray(indices) : null);
}
/**
* Create a new {@link ElasticsearchHealthIndicator} instance.
* @param client the Elasticsearch client
* @param responseTimeout the request timeout in milliseconds
* @param indices the indices to check
*/
public ElasticsearchHealthIndicator(Client client, long responseTimeout,
String... indices) {
super("Elasticsearch health check failed");
this.client = client;
this.responseTimeout = responseTimeout;
this.indices = indices;
}
@Override
protected void doHealthCheck(Health.Builder builder) throws Exception {
ClusterHealthRequest request = Requests.clusterHealthRequest(
ObjectUtils.isEmpty(this.indices) ? ALL_INDICES : this.indices);
ClusterHealthResponse response = this.client.admin().cluster().health(request)
.actionGet(this.responseTimeout);
switch (response.getStatus()) {
case GREEN:
case YELLOW:
builder.up();
break;
case RED:
default:
builder.down();
break;
}
builder.withDetail("clusterName", response.getClusterName());
builder.withDetail("numberOfNodes", response.getNumberOfNodes());
builder.withDetail("numberOfDataNodes", response.getNumberOfDataNodes());
builder.withDetail("activePrimaryShards", response.getActivePrimaryShards());
builder.withDetail("activeShards", response.getActiveShards());
builder.withDetail("relocatingShards", response.getRelocatingShards());
builder.withDetail("initializingShards", response.getInitializingShards());
builder.withDetail("unassignedShards", response.getUnassignedShards());
}
}