org.elasticsearch.rest.action.cat.RestThreadPoolAction Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of elasticsearch Show documentation
Show all versions of elasticsearch Show documentation
Elasticsearch subproject :server
/*
* 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 org.elasticsearch.action.admin.cluster.node.info.NodeInfo;
import org.elasticsearch.action.admin.cluster.node.info.NodesInfoRequest;
import org.elasticsearch.action.admin.cluster.node.info.NodesInfoResponse;
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.node.NodeClient;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.cluster.node.DiscoveryNodes;
import org.elasticsearch.common.Table;
import org.elasticsearch.common.regex.Regex;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.rest.RestController;
import org.elasticsearch.rest.RestRequest;
import org.elasticsearch.rest.RestResponse;
import org.elasticsearch.rest.action.RestActionListener;
import org.elasticsearch.rest.action.RestResponseListener;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.threadpool.ThreadPoolStats;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
import static org.elasticsearch.rest.RestRequest.Method.GET;
public class RestThreadPoolAction extends AbstractCatAction {
public RestThreadPoolAction(Settings settings, RestController controller) {
super(settings);
controller.registerHandler(GET, "/_cat/thread_pool", this);
controller.registerHandler(GET, "/_cat/thread_pool/{thread_pool_patterns}", this);
}
@Override
public String getName() {
return "cat_threadpool_action";
}
@Override
protected void documentation(StringBuilder sb) {
sb.append("/_cat/thread_pool\n");
sb.append("/_cat/thread_pool/{thread_pools}\n");
}
@Override
public RestChannelConsumer doCatRequest(final RestRequest request, final NodeClient client) {
final ClusterStateRequest clusterStateRequest = new ClusterStateRequest();
clusterStateRequest.clear().nodes(true);
clusterStateRequest.local(request.paramAsBoolean("local", clusterStateRequest.local()));
clusterStateRequest.masterNodeTimeout(request.paramAsTime("master_timeout", clusterStateRequest.masterNodeTimeout()));
return channel -> client.admin().cluster().state(clusterStateRequest, new RestActionListener(channel) {
@Override
public void processResponse(final ClusterStateResponse clusterStateResponse) {
NodesInfoRequest nodesInfoRequest = new NodesInfoRequest();
nodesInfoRequest.clear().process(true).threadPool(true);
client.admin().cluster().nodesInfo(nodesInfoRequest, new RestActionListener(channel) {
@Override
public void processResponse(final NodesInfoResponse nodesInfoResponse) {
NodesStatsRequest nodesStatsRequest = new NodesStatsRequest();
nodesStatsRequest.clear().threadPool(true);
client.admin().cluster().nodesStats(nodesStatsRequest, new RestResponseListener(channel) {
@Override
public RestResponse buildResponse(NodesStatsResponse nodesStatsResponse) throws Exception {
return RestTable.buildResponse(
buildTable(request, clusterStateResponse, nodesInfoResponse, nodesStatsResponse), channel);
}
});
}
});
}
});
}
private static final Set RESPONSE_PARAMS;
static {
final Set responseParams = new HashSet<>(AbstractCatAction.RESPONSE_PARAMS);
responseParams.add("thread_pool_patterns");
RESPONSE_PARAMS = Collections.unmodifiableSet(responseParams);
}
@Override
protected Set responseParams() {
return RESPONSE_PARAMS;
}
@Override
protected Table getTableWithHeader(final RestRequest request) {
final Table table = new Table();
table.startHeaders();
table.addCell("node_name", "default:true;alias:nn;desc:node name");
table.addCell("node_id", "default:false;alias:id;desc:persistent node id");
table.addCell("ephemeral_node_id", "default:false;alias:eid;desc:ephemeral node id");
table.addCell("pid", "default:false;alias:p;desc:process id");
table.addCell("host", "default:false;alias:h;desc:host name");
table.addCell("ip", "default:false;alias:i;desc:ip address");
table.addCell("port", "default:false;alias:po;desc:bound transport port");
table.addCell("name", "default:true;alias:n;desc:thread pool name");
table.addCell("type", "alias:t;default:false;desc:thread pool type");
table.addCell("active", "alias:a;default:true;text-align:right;desc:number of active threads");
table.addCell("pool_size", "alias:psz;default:false;text-align:right;desc:number of threads");
table.addCell("queue", "alias:q;default:true;text-align:right;desc:number of tasks currently in queue");
table.addCell("queue_size", "alias:qs;default:false;text-align:right;desc:maximum number of tasks permitted in queue");
table.addCell("rejected", "alias:r;default:true;text-align:right;desc:number of rejected tasks");
table.addCell("largest", "alias:l;default:false;text-align:right;desc:highest number of seen active threads");
table.addCell("completed", "alias:c;default:false;text-align:right;desc:number of completed tasks");
table.addCell("core", "alias:cr;default:false;text-align:right;desc:core number of threads in a scaling thread pool");
table.addCell("max", "alias:mx;default:false;text-align:right;desc:maximum number of threads in a scaling thread pool");
table.addCell("size", "alias:sz;default:false;text-align:right;desc:number of threads in a fixed thread pool");
table.addCell("keep_alive", "alias:ka;default:false;text-align:right;desc:thread keep alive time");
table.endHeaders();
return table;
}
private Table buildTable(RestRequest req, ClusterStateResponse state, NodesInfoResponse nodesInfo, NodesStatsResponse nodesStats) {
final String[] threadPools = req.paramAsStringArray("thread_pool_patterns", new String[] { "*" });
final DiscoveryNodes nodes = state.getState().nodes();
final Table table = getTableWithHeader(req);
// collect all thread pool names that we see across the nodes
final Set candidates = new HashSet<>();
for (final NodeStats nodeStats : nodesStats.getNodes()) {
for (final ThreadPoolStats.Stats threadPoolStats : nodeStats.getThreadPool()) {
candidates.add(threadPoolStats.getName());
}
}
// collect all thread pool names that match the specified thread pool patterns
final Set included = new HashSet<>();
for (final String candidate : candidates) {
if (Regex.simpleMatch(threadPools, candidate)) {
included.add(candidate);
}
}
for (final DiscoveryNode node : nodes) {
final NodeInfo info = nodesInfo.getNodesMap().get(node.getId());
final NodeStats stats = nodesStats.getNodesMap().get(node.getId());
final Map poolThreadStats;
final Map poolThreadInfo;
if (stats == null) {
poolThreadStats = Collections.emptyMap();
poolThreadInfo = Collections.emptyMap();
} else {
// we use a sorted map to ensure that thread pools are sorted by name
poolThreadStats = new TreeMap<>();
poolThreadInfo = new HashMap<>();
ThreadPoolStats threadPoolStats = stats.getThreadPool();
for (ThreadPoolStats.Stats threadPoolStat : threadPoolStats) {
poolThreadStats.put(threadPoolStat.getName(), threadPoolStat);
}
if (info != null) {
for (ThreadPool.Info threadPoolInfo : info.getThreadPool()) {
poolThreadInfo.put(threadPoolInfo.getName(), threadPoolInfo);
}
}
}
for (Map.Entry entry : poolThreadStats.entrySet()) {
if (!included.contains(entry.getKey())) continue;
table.startRow();
table.addCell(node.getName());
table.addCell(node.getId());
table.addCell(node.getEphemeralId());
table.addCell(info == null ? null : info.getProcess().getId());
table.addCell(node.getHostName());
table.addCell(node.getHostAddress());
table.addCell(node.getAddress().address().getPort());
final ThreadPoolStats.Stats poolStats = entry.getValue();
final ThreadPool.Info poolInfo = poolThreadInfo.get(entry.getKey());
Long maxQueueSize = null;
String keepAlive = null;
Integer core = null;
Integer max = null;
Integer size = null;
if (poolInfo != null) {
if (poolInfo.getQueueSize() != null) {
maxQueueSize = poolInfo.getQueueSize().singles();
}
if (poolInfo.getKeepAlive() != null) {
keepAlive = poolInfo.getKeepAlive().toString();
}
if (poolInfo.getThreadPoolType() == ThreadPool.ThreadPoolType.SCALING) {
assert poolInfo.getMin() >= 0;
core = poolInfo.getMin();
assert poolInfo.getMax() > 0;
max = poolInfo.getMax();
} else {
assert poolInfo.getMin() == poolInfo.getMax() && poolInfo.getMax() > 0;
size = poolInfo.getMax();
}
}
table.addCell(entry.getKey());
table.addCell(poolInfo == null ? null : poolInfo.getThreadPoolType().getType());
table.addCell(poolStats == null ? null : poolStats.getActive());
table.addCell(poolStats == null ? null : poolStats.getThreads());
table.addCell(poolStats == null ? null : poolStats.getQueue());
table.addCell(maxQueueSize == null ? -1 : maxQueueSize);
table.addCell(poolStats == null ? null : poolStats.getRejected());
table.addCell(poolStats == null ? null : poolStats.getLargest());
table.addCell(poolStats == null ? null : poolStats.getCompleted());
table.addCell(core);
table.addCell(max);
table.addCell(size);
table.addCell(keepAlive);
table.endRow();
}
}
return table;
}
}