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org.elasticsearch.rest.action.cat.RestAllocationAction Maven / Gradle / Ivy
/*
* 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.cat;
import com.carrotsearch.hppc.ObjectIntOpenHashMap;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.admin.cluster.node.stats.NodeStats;
import org.elasticsearch.action.admin.cluster.node.stats.NodesStatsRequest;
import org.elasticsearch.action.admin.cluster.node.stats.NodesStatsResponse;
import org.elasticsearch.action.admin.cluster.state.ClusterStateRequest;
import org.elasticsearch.action.admin.cluster.state.ClusterStateResponse;
import org.elasticsearch.client.Client;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.cluster.routing.ShardRouting;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.Table;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.unit.ByteSizeValue;
import org.elasticsearch.monitor.fs.FsStats;
import org.elasticsearch.rest.RestChannel;
import org.elasticsearch.rest.RestController;
import org.elasticsearch.rest.RestRequest;
import org.elasticsearch.rest.XContentThrowableRestResponse;
import org.elasticsearch.rest.action.support.RestTable;
import java.io.IOException;
import java.util.Iterator;
import java.util.Locale;
import static org.elasticsearch.rest.RestRequest.Method.GET;
public class RestAllocationAction extends AbstractCatAction {
@Inject
public RestAllocationAction(Settings settings, Client client, RestController controller) {
super(settings, client);
controller.registerHandler(GET, "/_cat/allocation", this);
controller.registerHandler(GET, "/_cat/allocation/{nodes}", this);
}
@Override
void documentation(StringBuilder sb) {
sb.append("/_cat/allocation\n");
}
@Override
public void doRequest(final RestRequest request, final RestChannel channel) {
final String[] nodes = Strings.splitStringByCommaToArray(request.param("nodes"));
final ClusterStateRequest clusterStateRequest = new ClusterStateRequest();
clusterStateRequest.clear().routingTable(true);
clusterStateRequest.local(request.paramAsBoolean("local", clusterStateRequest.local()));
clusterStateRequest.masterNodeTimeout(request.paramAsTime("master_timeout", clusterStateRequest.masterNodeTimeout()));
client.admin().cluster().state(clusterStateRequest, new ActionListener() {
@Override
public void onResponse(final ClusterStateResponse state) {
NodesStatsRequest statsRequest = new NodesStatsRequest(nodes);
statsRequest.clear().fs(true);
client.admin().cluster().nodesStats(statsRequest, new ActionListener() {
@Override
public void onResponse(NodesStatsResponse stats) {
try {
Table tab = buildTable(request, state, stats);
channel.sendResponse(RestTable.buildResponse(tab, request, channel));
} 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);
}
}
});
}
@Override
public void onFailure(Throwable e) {
try {
channel.sendResponse(new XContentThrowableRestResponse(request, e));
} catch (IOException e1) {
logger.error("Failed to send failure response", e1);
}
}
});
}
@Override
Table getTableWithHeader(final RestRequest request) {
final Table table = new Table();
table.startHeaders();
table.addCell("shards", "text-align:right;desc:number of shards on node");
table.addCell("diskUsed", "text-align:right;desc:disk used (total, not just ES)");
table.addCell("diskAvail", "text-align:right;desc:disk available");
table.addCell("diskTotal", "text-align:right;desc:total capacity of all volumes");
table.addCell("diskPercent", "text-align:right;desc:percent disk used");
table.addCell("host", "desc:host of node");
table.addCell("ip", "desc:ip of node");
table.addCell("node", "desc:name of node");
table.endHeaders();
return table;
}
private Table buildTable(RestRequest request, final ClusterStateResponse state, final NodesStatsResponse stats) {
final ObjectIntOpenHashMap allocs = new ObjectIntOpenHashMap();
for (ShardRouting shard : state.getState().routingTable().allShards()) {
String nodeId = "UNASSIGNED";
if (shard.assignedToNode()) {
nodeId = shard.currentNodeId();
}
allocs.addTo(nodeId, 1);
}
Table table = getTableWithHeader(request);
for (NodeStats nodeStats : stats.getNodes()) {
DiscoveryNode node = nodeStats.getNode();
int shardCount = -1;
if (allocs.containsKey(node.id())) {
shardCount = allocs.lget();
}
long used = nodeStats.getFs().getTotal().getTotal().bytes() - nodeStats.getFs().getTotal().getAvailable().bytes();
long avail = nodeStats.getFs().getTotal().getAvailable().bytes();
short diskPercent = -1;
if (used >= 0 && avail > 0) {
diskPercent = (short) (used * 100 / (used + avail));
}
table.startRow();
table.addCell(shardCount < 0 ? null : shardCount);
table.addCell(used < 0 ? null : new ByteSizeValue(used));
table.addCell(avail < 0 ? null : new ByteSizeValue(avail));
table.addCell(nodeStats.getFs().getTotal().getTotal());
table.addCell(diskPercent < 0 ? null : diskPercent);
table.addCell(node == null ? null : node.getHostName());
table.addCell(node == null ? null : node.getHostAddress());
table.addCell(node == null ? "UNASSIGNED" : node.name());
table.endRow();
}
if (allocs.containsKey("UNASSIGNED")) {
table.startRow();
table.addCell(allocs.lget());
table.addCell(null);
table.addCell(null);
table.addCell(null);
table.addCell(null);
table.addCell(null);
table.addCell(null);
table.addCell("UNASSIGNED");
table.endRow();
}
return table;
}
}