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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.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 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(RestActions.splitIndices(request.param("index")));
clusterHealthRequest.local(request.paramAsBoolean("local", clusterHealthRequest.local()));
clusterHealthRequest.listenerThreaded(false);
int level = 0;
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()));
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() {
@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();
builder.field(Fields.CLUSTER_NAME, response.getClusterName());
builder.field(Fields.STATUS, response.getStatus().name().toLowerCase(Locale.ROOT));
builder.field(Fields.TIMED_OUT, response.isTimedOut());
builder.field(Fields.NUMBER_OF_NODES, response.getNumberOfNodes());
builder.field(Fields.NUMBER_OF_DATA_NODES, response.getNumberOfDataNodes());
builder.field(Fields.ACTIVE_PRIMARY_SHARDS, response.getActivePrimaryShards());
builder.field(Fields.ACTIVE_SHARDS, response.getActiveShards());
builder.field(Fields.RELOCATING_SHARDS, response.getRelocatingShards());
builder.field(Fields.INITIALIZING_SHARDS, response.getInitializingShards());
builder.field(Fields.UNASSIGNED_SHARDS, response.getUnassignedShards());
if (!response.getValidationFailures().isEmpty()) {
builder.startArray(Fields.VALIDATION_FAILURES);
for (String validationFailure : response.getValidationFailures()) {
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.getIndex());
if (!indexHealth.getValidationFailures().isEmpty()) {
builder.startArray(Fields.VALIDATION_FAILURES);
for (String validationFailure : indexHealth.getValidationFailures()) {
builder.value(validationFailure);
}
builder.endArray();
}
builder.endObject();
}
}
builder.endArray();
}
if (fLevel > 0) {
builder.startObject(Fields.INDICES);
for (ClusterIndexHealth indexHealth : response) {
builder.startObject(indexHealth.getIndex(), XContentBuilder.FieldCaseConversion.NONE);
builder.field(Fields.STATUS, indexHealth.getStatus().name().toLowerCase(Locale.ROOT));
builder.field(Fields.NUMBER_OF_SHARDS, indexHealth.getNumberOfShards());
builder.field(Fields.NUMBER_OF_REPLICAS, indexHealth.getNumberOfReplicas());
builder.field(Fields.ACTIVE_PRIMARY_SHARDS, indexHealth.getActivePrimaryShards());
builder.field(Fields.ACTIVE_SHARDS, indexHealth.getActiveShards());
builder.field(Fields.RELOCATING_SHARDS, indexHealth.getRelocatingShards());
builder.field(Fields.INITIALIZING_SHARDS, indexHealth.getInitializingShards());
builder.field(Fields.UNASSIGNED_SHARDS, indexHealth.getUnassignedShards());
if (!indexHealth.getValidationFailures().isEmpty()) {
builder.startArray(Fields.VALIDATION_FAILURES);
for (String validationFailure : indexHealth.getValidationFailures()) {
builder.value(validationFailure);
}
builder.endArray();
}
if (fLevel > 1) {
builder.startObject(Fields.SHARDS);
for (ClusterShardHealth shardHealth : indexHealth) {
builder.startObject(Integer.toString(shardHealth.getId()));
builder.field(Fields.STATUS, shardHealth.getStatus().name().toLowerCase(Locale.ROOT));
builder.field(Fields.PRIMARY_ACTIVE, shardHealth.isPrimaryActive());
builder.field(Fields.ACTIVE_SHARDS, shardHealth.getActiveShards());
builder.field(Fields.RELOCATING_SHARDS, shardHealth.getRelocatingShards());
builder.field(Fields.INITIALIZING_SHARDS, shardHealth.getInitializingShards());
builder.field(Fields.UNASSIGNED_SHARDS, shardHealth.getUnassignedShards());
builder.endObject();
}
builder.endObject();
}
builder.endObject();
}
builder.endObject();
}
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);
}
}
});
}
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");
}
}
