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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.rest.action.admin.cluster.state;
import org.elasticsearch.action.admin.cluster.state.ClusterStateRequest;
import org.elasticsearch.action.admin.cluster.state.ClusterStateResponse;
import org.elasticsearch.client.Client;
import org.elasticsearch.client.Requests;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.settings.SettingsFilter;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentBuilderString;
import org.elasticsearch.rest.*;
import org.elasticsearch.rest.action.support.RestBuilderListener;
import java.util.EnumSet;
/**
*
*/
public class RestClusterStateAction extends BaseRestHandler {
private final SettingsFilter settingsFilter;
@Inject
public RestClusterStateAction(Settings settings, RestController controller, Client client, SettingsFilter settingsFilter) {
super(settings, controller, client);
controller.registerHandler(RestRequest.Method.GET, "/_cluster/state", this);
controller.registerHandler(RestRequest.Method.GET, "/_cluster/state/{metric}", this);
controller.registerHandler(RestRequest.Method.GET, "/_cluster/state/{metric}/{indices}", this);
this.settingsFilter = settingsFilter;
}
@Override
public void handleRequest(final RestRequest request, final RestChannel channel, final Client client) {
final ClusterStateRequest clusterStateRequest = Requests.clusterStateRequest();
clusterStateRequest.listenerThreaded(false);
clusterStateRequest.local(request.paramAsBoolean("local", clusterStateRequest.local()));
clusterStateRequest.masterNodeTimeout(request.paramAsTime("master_timeout", clusterStateRequest.masterNodeTimeout()));
final String[] indices = Strings.splitStringByCommaToArray(request.param("indices", "_all"));
boolean isAllIndicesOnly = indices.length == 1 && "_all".equals(indices[0]);
if (!isAllIndicesOnly) {
clusterStateRequest.indices(indices);
}
if (request.hasParam("metric")) {
EnumSet<ClusterState.Metric> metrics = ClusterState.Metric.parseString(request.param("metric"), true);
// do not ask for what we do not need.
clusterStateRequest.nodes(metrics.contains(ClusterState.Metric.NODES) || metrics.contains(ClusterState.Metric.MASTER_NODE));
clusterStateRequest.routingTable(metrics.contains(ClusterState.Metric.ROUTING_TABLE));
clusterStateRequest.metaData(metrics.contains(ClusterState.Metric.METADATA));
clusterStateRequest.blocks(metrics.contains(ClusterState.Metric.BLOCKS));
}
client.admin().cluster().state(clusterStateRequest, new RestBuilderListener<ClusterStateResponse>(channel) {
@Override
public RestResponse buildResponse(ClusterStateResponse response, XContentBuilder builder) throws Exception {
builder.startObject();
builder.field(Fields.CLUSTER_NAME, response.getClusterName().value());
response.getState().settingsFilter(settingsFilter).toXContent(builder, request);
builder.endObject();
return new BytesRestResponse(RestStatus.OK, builder);
}
});
}
static final class Fields {
static final XContentBuilderString CLUSTER_NAME = new XContentBuilderString("cluster_name");
}
}