/*
* Licensed to Elastic Search and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Elastic Search 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.health;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.admin.cluster.health.*;
import org.elasticsearch.client.Client;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentBuilderString;
import org.elasticsearch.rest.*;
import org.elasticsearch.rest.action.support.RestActions;
import org.elasticsearch.rest.action.support.RestXContentBuilder;
import java.io.IOException;
import static org.elasticsearch.client.Requests.*;
import static org.elasticsearch.rest.RestStatus.*;
/**
* @author kimchy (shay.banon)
*/
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(RestActions.splitIndices(request.param("index")));
int level = 0;
try {
clusterHealthRequest.timeout(request.paramAsTime("timeout", clusterHealthRequest.timeout()));
String waitForStatus = request.param("wait_for_status");
if (waitForStatus != null) {
clusterHealthRequest.waitForStatus(ClusterHealthStatus.valueOf(waitForStatus.toUpperCase()));
}
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()));
String sLevel = request.param("level");
if (sLevel != null) {
if ("cluster".equals("sLevel")) {
level = 0;
} else if ("indices".equals(sLevel)) {
level = 1;
} else if ("shards".equals(sLevel)) {
level = 2;
}
}
} 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;
}
final int fLevel = level;
client.admin().cluster().health(clusterHealthRequest, new ActionListener<ClusterHealthResponse>() {
@Override public void onResponse(ClusterHealthResponse response) {
try {
XContentBuilder builder = RestXContentBuilder.restContentBuilder(request);
builder.startObject();
builder.field(Fields.CLUSTER_NAME, response.clusterName());
builder.field(Fields.STATUS, response.status().name().toLowerCase());
builder.field(Fields.TIMED_OUT, response.timedOut());
builder.field(Fields.NUMBER_OF_NODES, response.numberOfNodes());
builder.field(Fields.NUMBER_OF_DATA_NODES, response.numberOfDataNodes());
builder.field(Fields.ACTIVE_PRIMARY_SHARDS, response.activePrimaryShards());
builder.field(Fields.ACTIVE_SHARDS, response.activeShards());
builder.field(Fields.RELOCATING_SHARDS, response.relocatingShards());
builder.field(Fields.INITIALIZING_SHARDS, response.initializingShards());
builder.field(Fields.UNASSIGNED_SHARDS, response.unassignedShards());
if (!response.validationFailures().isEmpty()) {
builder.startArray(Fields.VALIDATION_FAILURES);
for (String validationFailure : response.validationFailures()) {
builder.value(validationFailure);
}
// if we don't print index level information, still print the index validation failures
// so we know why the status is red
if (fLevel == 0) {
for (ClusterIndexHealth indexHealth : response) {
builder.startObject(indexHealth.index());
if (!indexHealth.validationFailures().isEmpty()) {
builder.startArray(Fields.VALIDATION_FAILURES);
for (String validationFailure : indexHealth.validationFailures()) {
builder.value(validationFailure);
}
builder.endArray();
}
builder.endObject();
}
}
builder.endArray();
}
if (fLevel > 0) {
builder.startObject(Fields.INDICES);
for (ClusterIndexHealth indexHealth : response) {
builder.startObject(indexHealth.index(), XContentBuilder.FieldCaseConversion.NONE);
builder.field(Fields.STATUS, indexHealth.status().name().toLowerCase());
builder.field(Fields.NUMBER_OF_SHARDS, indexHealth.numberOfShards());
builder.field(Fields.NUMBER_OF_REPLICAS, indexHealth.numberOfReplicas());
builder.field(Fields.ACTIVE_PRIMARY_SHARDS, indexHealth.activePrimaryShards());
builder.field(Fields.ACTIVE_SHARDS, indexHealth.activeShards());
builder.field(Fields.RELOCATING_SHARDS, indexHealth.relocatingShards());
builder.field(Fields.INITIALIZING_SHARDS, indexHealth.initializingShards());
builder.field(Fields.UNASSIGNED_SHARDS, indexHealth.unassignedShards());
if (!indexHealth.validationFailures().isEmpty()) {
builder.startArray(Fields.VALIDATION_FAILURES);
for (String validationFailure : indexHealth.validationFailures()) {
builder.value(validationFailure);
}
builder.endArray();
}
if (fLevel > 1) {
builder.startObject(Fields.SHARDS);
for (ClusterShardHealth shardHealth : indexHealth) {
builder.startObject(Integer.toString(shardHealth.id()));
builder.field(Fields.STATUS, shardHealth.status().name().toLowerCase());
builder.field(Fields.PRIMARY_ACTIVE, shardHealth.primaryActive());
builder.field(Fields.ACTIVE_SHARDS, shardHealth.activeShards());
builder.field(Fields.RELOCATING_SHARDS, shardHealth.relocatingShards());
builder.field(Fields.INITIALIZING_SHARDS, shardHealth.initializingShards());
builder.field(Fields.UNASSIGNED_SHARDS, shardHealth.unassignedShards());
builder.endObject();
}
builder.endObject();
}
builder.endObject();
}
builder.endObject();
}
builder.endObject();
channel.sendResponse(new XContentRestResponse(request, RestStatus.OK, builder));
} catch (Exception 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);
}
}
});
}
static final class Fields {
static final XContentBuilderString CLUSTER_NAME = new XContentBuilderString("cluster_name");
static final XContentBuilderString STATUS = new XContentBuilderString("status");
static final XContentBuilderString TIMED_OUT = new XContentBuilderString("timed_out");
static final XContentBuilderString NUMBER_OF_SHARDS = new XContentBuilderString("number_of_shards");
static final XContentBuilderString NUMBER_OF_REPLICAS = new XContentBuilderString("number_of_replicas");
static final XContentBuilderString NUMBER_OF_NODES = new XContentBuilderString("number_of_nodes");
static final XContentBuilderString NUMBER_OF_DATA_NODES = new XContentBuilderString("number_of_data_nodes");
static final XContentBuilderString ACTIVE_PRIMARY_SHARDS = new XContentBuilderString("active_primary_shards");
static final XContentBuilderString ACTIVE_SHARDS = new XContentBuilderString("active_shards");
static final XContentBuilderString RELOCATING_SHARDS = new XContentBuilderString("relocating_shards");
static final XContentBuilderString INITIALIZING_SHARDS = new XContentBuilderString("initializing_shards");
static final XContentBuilderString UNASSIGNED_SHARDS = new XContentBuilderString("unassigned_shards");
static final XContentBuilderString VALIDATION_FAILURES = new XContentBuilderString("validation_failures");
static final XContentBuilderString INDICES = new XContentBuilderString("indices");
static final XContentBuilderString SHARDS = new XContentBuilderString("shards");
static final XContentBuilderString PRIMARY_ACTIVE = new XContentBuilderString("primary_active");
}
}