forked from elastic/elasticsearch
/
RestClusterRerouteAction.java
103 lines (93 loc) · 4.21 KB
/
RestClusterRerouteAction.java
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/*
* Licensed to ElasticSearch and Shay Banon 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.reroute;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.admin.cluster.reroute.ClusterRerouteRequest;
import org.elasticsearch.action.admin.cluster.reroute.ClusterRerouteResponse;
import org.elasticsearch.client.Client;
import org.elasticsearch.client.Requests;
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.rest.*;
import org.elasticsearch.rest.action.support.RestXContentBuilder;
import java.io.IOException;
/**
*/
public class RestClusterRerouteAction extends BaseRestHandler {
private final SettingsFilter settingsFilter;
@Inject
public RestClusterRerouteAction(Settings settings, Client client, RestController controller,
SettingsFilter settingsFilter) {
super(settings, client);
this.settingsFilter = settingsFilter;
controller.registerHandler(RestRequest.Method.POST, "/_cluster/reroute", this);
}
@Override
public void handleRequest(final RestRequest request, final RestChannel channel) {
final ClusterRerouteRequest clusterRerouteRequest = Requests.clusterRerouteRequest();
clusterRerouteRequest.listenerThreaded(false);
clusterRerouteRequest.dryRun(request.paramAsBoolean("dry_run", clusterRerouteRequest.dryRun()));
if (request.hasContent()) {
try {
clusterRerouteRequest.source(request.content());
} catch (Exception e) {
try {
channel.sendResponse(new XContentThrowableRestResponse(request, e));
} catch (IOException e1) {
logger.warn("Failed to send response", e1);
}
return;
}
}
client.admin().cluster().reroute(clusterRerouteRequest, new ActionListener<ClusterRerouteResponse>() {
@Override
public void onResponse(ClusterRerouteResponse response) {
try {
XContentBuilder builder = RestXContentBuilder.restContentBuilder(request);
builder.startObject();
builder.field("ok", true);
builder.startObject("state");
// by default, filter metadata
if (request.param("filter_metadata") == null) {
request.params().put("filter_metadata", "true");
}
response.state().settingsFilter(settingsFilter).toXContent(builder, request);
builder.endObject();
builder.endObject();
channel.sendResponse(new XContentRestResponse(request, RestStatus.OK, builder));
} catch (Exception e) {
onFailure(e);
}
}
@Override
public void onFailure(Throwable e) {
if (logger.isDebugEnabled()) {
logger.debug("failed to handle cluster reroute", e);
}
try {
channel.sendResponse(new XContentThrowableRestResponse(request, e));
} catch (IOException e1) {
logger.error("Failed to send failure response", e1);
}
}
});
}
}