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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.action.admin.cluster.stats;
import org.elasticsearch.action.FailedNodeException;
import org.elasticsearch.action.support.nodes.BaseNodesResponse;
import org.elasticsearch.cluster.ClusterName;
import org.elasticsearch.cluster.health.ClusterHealthStatus;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import java.io.IOException;
import java.util.List;
import java.util.Locale;
public class ClusterStatsResponse extends BaseNodesResponse<ClusterStatsNodeResponse> implements ToXContent {
ClusterStatsNodes nodesStats;
ClusterStatsIndices indicesStats;
ClusterHealthStatus status;
long timestamp;
ClusterStatsResponse() {
}
public ClusterStatsResponse(long timestamp,
ClusterName clusterName,
List<ClusterStatsNodeResponse> nodes,
List<FailedNodeException> failures) {
super(clusterName, nodes, failures);
this.timestamp = timestamp;
nodesStats = new ClusterStatsNodes(nodes);
indicesStats = new ClusterStatsIndices(nodes);
for (ClusterStatsNodeResponse response : nodes) {
// only the master node populates the status
if (response.clusterStatus() != null) {
status = response.clusterStatus();
break;
}
}
}
public long getTimestamp() {
return this.timestamp;
}
public ClusterHealthStatus getStatus() {
return this.status;
}
public ClusterStatsNodes getNodesStats() {
return nodesStats;
}
public ClusterStatsIndices getIndicesStats() {
return indicesStats;
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
timestamp = in.readVLong();
// it may be that the master switched on us while doing the operation. In this case the status may be null.
status = in.readOptionalWriteable(ClusterHealthStatus::readFrom);
}
@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
out.writeVLong(timestamp);
out.writeOptionalWriteable(status);
}
@Override
protected List<ClusterStatsNodeResponse> readNodesFrom(StreamInput in) throws IOException {
List<ClusterStatsNodeResponse> nodes = in.readList(ClusterStatsNodeResponse::readNodeResponse);
// built from nodes rather than from the stream directly
nodesStats = new ClusterStatsNodes(nodes);
indicesStats = new ClusterStatsIndices(nodes);
return nodes;
}
@Override
protected void writeNodesTo(StreamOutput out, List<ClusterStatsNodeResponse> nodes) throws IOException {
// nodeStats and indicesStats are rebuilt from nodes
out.writeStreamableList(nodes);
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.field("timestamp", getTimestamp());
if (status != null) {
builder.field("status", status.name().toLowerCase(Locale.ROOT));
}
builder.startObject("indices");
indicesStats.toXContent(builder, params);
builder.endObject();
builder.startObject("nodes");
nodesStats.toXContent(builder, params);
builder.endObject();
return builder;
}
@Override
public String toString() {
try {
XContentBuilder builder = XContentFactory.jsonBuilder().prettyPrint();
builder.startObject();
toXContent(builder, EMPTY_PARAMS);
builder.endObject();
return builder.string();
} catch (IOException e) {
return "{ \"error\" : \"" + e.getMessage() + "\"}";
}
}
}