org.elasticsearch.rest.action.admin.cluster.RestNodesInfoAction 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.admin.cluster;
import org.elasticsearch.action.admin.cluster.node.info.NodesInfoRequest;
import org.elasticsearch.client.node.NodeClient;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.settings.SettingsFilter;
import org.elasticsearch.common.util.set.Sets;
import org.elasticsearch.rest.BaseRestHandler;
import org.elasticsearch.rest.RestController;
import org.elasticsearch.rest.RestRequest;
import org.elasticsearch.rest.action.RestActions.NodesResponseRestListener;
import java.io.IOException;
import java.util.Set;
import static org.elasticsearch.rest.RestRequest.Method.GET;
public class RestNodesInfoAction extends BaseRestHandler {
static final Set ALLOWED_METRICS = Sets.newHashSet(
"http",
"ingest",
"indices",
"jvm",
"os",
"plugins",
"process",
"settings",
"thread_pool",
"transport");
private final SettingsFilter settingsFilter;
public RestNodesInfoAction(RestController controller, SettingsFilter settingsFilter) {
controller.registerHandler(GET, "/_nodes", this);
// this endpoint is used for metrics, not for node IDs, like /_nodes/fs
controller.registerHandler(GET, "/_nodes/{nodeId}", this);
controller.registerHandler(GET, "/_nodes/{nodeId}/{metrics}", this);
// added this endpoint to be aligned with stats
controller.registerHandler(GET, "/_nodes/{nodeId}/info/{metrics}", this);
this.settingsFilter = settingsFilter;
}
@Override
public String getName() {
return "nodes_info_action";
}
@Override
public RestChannelConsumer prepareRequest(final RestRequest request, final NodeClient client) throws IOException {
final NodesInfoRequest nodesInfoRequest = prepareRequest(request);
settingsFilter.addFilterSettingParams(request);
return channel -> client.admin().cluster().nodesInfo(nodesInfoRequest, new NodesResponseRestListener<>(channel));
}
static NodesInfoRequest prepareRequest(final RestRequest request) {
String[] nodeIds;
Set metrics;
// special case like /_nodes/os (in this case os are metrics and not the nodeId)
// still, /_nodes/_local (or any other node id) should work and be treated as usual
// this means one must differentiate between allowed metrics and arbitrary node ids in the same place
if (request.hasParam("nodeId") && !request.hasParam("metrics")) {
String nodeId = request.param("nodeId", "_all");
Set metricsOrNodeIds = Strings.tokenizeByCommaToSet(nodeId);
boolean isMetricsOnly = ALLOWED_METRICS.containsAll(metricsOrNodeIds);
if (isMetricsOnly) {
nodeIds = new String[]{"_all"};
metrics = metricsOrNodeIds;
} else {
nodeIds = Strings.tokenizeToStringArray(nodeId, ",");
metrics = Sets.newHashSet("_all");
}
} else {
nodeIds = Strings.tokenizeToStringArray(request.param("nodeId", "_all"), ",");
metrics = Strings.tokenizeByCommaToSet(request.param("metrics", "_all"));
}
final NodesInfoRequest nodesInfoRequest = new NodesInfoRequest(nodeIds);
nodesInfoRequest.timeout(request.param("timeout"));
// shortcut, don't do checks if only all is specified
if (metrics.size() == 1 && metrics.contains("_all")) {
nodesInfoRequest.all();
} else {
nodesInfoRequest.clear();
nodesInfoRequest.settings(metrics.contains("settings"));
nodesInfoRequest.os(metrics.contains("os"));
nodesInfoRequest.process(metrics.contains("process"));
nodesInfoRequest.jvm(metrics.contains("jvm"));
nodesInfoRequest.threadPool(metrics.contains("thread_pool"));
nodesInfoRequest.transport(metrics.contains("transport"));
nodesInfoRequest.http(metrics.contains("http"));
nodesInfoRequest.plugins(metrics.contains("plugins"));
nodesInfoRequest.ingest(metrics.contains("ingest"));
nodesInfoRequest.indices(metrics.contains("indices"));
}
return nodesInfoRequest;
}
@Override
protected Set responseParams() {
return Settings.FORMAT_PARAMS;
}
@Override
public boolean canTripCircuitBreaker() {
return false;
}
}