org.elasticsearch.rest.action.admin.cluster.health.RestClusterHealthAction Maven / Gradle / Ivy
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* the Apache License, Version 2.0 (the "License"); you may
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* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.elasticsearch.rest.action.admin.cluster.health;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.admin.cluster.health.ClusterHealthRequest;
import org.elasticsearch.action.admin.cluster.health.ClusterHealthResponse;
import org.elasticsearch.action.admin.cluster.health.ClusterHealthStatus;
import org.elasticsearch.client.Client;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.rest.*;
import org.elasticsearch.rest.action.support.RestXContentBuilder;
import java.io.IOException;
import java.util.Locale;
import static org.elasticsearch.client.Requests.clusterHealthRequest;
import static org.elasticsearch.rest.RestStatus.PRECONDITION_FAILED;
/**
*
*/
public class RestClusterHealthAction extends BaseRestHandler {
@Inject
public RestClusterHealthAction(Settings settings, Client client, RestController controller) {
super(settings, client);
controller.registerHandler(RestRequest.Method.GET, "/_cluster/health", this);
controller.registerHandler(RestRequest.Method.GET, "/_cluster/health/{index}", this);
}
@Override
public void handleRequest(final RestRequest request, final RestChannel channel) {
ClusterHealthRequest clusterHealthRequest = clusterHealthRequest(Strings.splitStringByCommaToArray(request.param("index")));
clusterHealthRequest.local(request.paramAsBoolean("local", clusterHealthRequest.local()));
clusterHealthRequest.listenerThreaded(false);
try {
clusterHealthRequest.masterNodeTimeout(request.paramAsTime("master_timeout", clusterHealthRequest.masterNodeTimeout()));
clusterHealthRequest.timeout(request.paramAsTime("timeout", clusterHealthRequest.timeout()));
String waitForStatus = request.param("wait_for_status");
if (waitForStatus != null) {
clusterHealthRequest.waitForStatus(ClusterHealthStatus.valueOf(waitForStatus.toUpperCase(Locale.ROOT)));
}
clusterHealthRequest.waitForRelocatingShards(request.paramAsInt("wait_for_relocating_shards", clusterHealthRequest.waitForRelocatingShards()));
clusterHealthRequest.waitForActiveShards(request.paramAsInt("wait_for_active_shards", clusterHealthRequest.waitForActiveShards()));
clusterHealthRequest.waitForNodes(request.param("wait_for_nodes", clusterHealthRequest.waitForNodes()));
} catch (Exception e) {
try {
XContentBuilder builder = RestXContentBuilder.restContentBuilder(request);
channel.sendResponse(new XContentRestResponse(request, PRECONDITION_FAILED, builder.startObject().field("error", e.getMessage()).endObject()));
} catch (IOException e1) {
logger.error("Failed to send failure response", e1);
}
return;
}
client.admin().cluster().health(clusterHealthRequest, new ActionListener() {
@Override
public void onResponse(ClusterHealthResponse response) {
try {
RestStatus status = RestStatus.OK;
// not sure..., we handle the health API, so we are not unavailable
// in any case, "/" should be used for
//if (response.status() == ClusterHealthStatus.RED) {
// status = RestStatus.SERVICE_UNAVAILABLE;
//}
XContentBuilder builder = RestXContentBuilder.restContentBuilder(request);
builder.startObject();
response.toXContent(builder, request);
builder.endObject();
channel.sendResponse(new XContentRestResponse(request, status, builder));
} catch (Throwable e) {
onFailure(e);
}
}
@Override
public void onFailure(Throwable e) {
try {
channel.sendResponse(new XContentThrowableRestResponse(request, e));
} catch (IOException e1) {
logger.error("Failed to send failure response", e1);
}
}
});
}
}