/*
* 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.action.admin.cluster.node.restart;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.ElasticsearchIllegalStateException;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.nodes.NodeOperationRequest;
import org.elasticsearch.action.support.nodes.TransportNodesOperationAction;
import org.elasticsearch.cluster.ClusterName;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.node.Node;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicReferenceArray;
import static com.google.common.collect.Lists.newArrayList;
import static org.elasticsearch.common.unit.TimeValue.readTimeValue;
/**
*
*/
public class TransportNodesRestartAction extends TransportNodesOperationAction<NodesRestartRequest, NodesRestartResponse, TransportNodesRestartAction.NodeRestartRequest, NodesRestartResponse.NodeRestartResponse> {
private final Node node;
private final boolean disabled;
private AtomicBoolean restartRequested = new AtomicBoolean();
@Inject
public TransportNodesRestartAction(Settings settings, ClusterName clusterName, ThreadPool threadPool,
ClusterService clusterService, TransportService transportService,
Node node, ActionFilters actionFilters) {
super(settings, NodesRestartAction.NAME, clusterName, threadPool, clusterService, transportService, actionFilters);
this.node = node;
disabled = componentSettings.getAsBoolean("disabled", false);
}
@Override
protected void doExecute(NodesRestartRequest nodesRestartRequest, ActionListener<NodesRestartResponse> listener) {
listener.onFailure(new ElasticsearchIllegalStateException("restart is disabled (for now) ...."));
}
@Override
protected String executor() {
return ThreadPool.Names.GENERIC;
}
@Override
protected NodesRestartResponse newResponse(NodesRestartRequest nodesShutdownRequest, AtomicReferenceArray responses) {
final List<NodesRestartResponse.NodeRestartResponse> nodeRestartResponses = newArrayList();
for (int i = 0; i < responses.length(); i++) {
Object resp = responses.get(i);
if (resp instanceof NodesRestartResponse.NodeRestartResponse) {
nodeRestartResponses.add((NodesRestartResponse.NodeRestartResponse) resp);
}
}
return new NodesRestartResponse(clusterName, nodeRestartResponses.toArray(new NodesRestartResponse.NodeRestartResponse[nodeRestartResponses.size()]));
}
@Override
protected NodesRestartRequest newRequest() {
return new NodesRestartRequest();
}
@Override
protected NodeRestartRequest newNodeRequest() {
return new NodeRestartRequest();
}
@Override
protected NodeRestartRequest newNodeRequest(String nodeId, NodesRestartRequest request) {
return new NodeRestartRequest(nodeId, request);
}
@Override
protected NodesRestartResponse.NodeRestartResponse newNodeResponse() {
return new NodesRestartResponse.NodeRestartResponse();
}
@Override
protected NodesRestartResponse.NodeRestartResponse nodeOperation(NodeRestartRequest request) throws ElasticsearchException {
if (disabled) {
throw new ElasticsearchIllegalStateException("Restart is disabled");
}
if (!restartRequested.compareAndSet(false, true)) {
return new NodesRestartResponse.NodeRestartResponse(clusterService.localNode());
}
logger.info("Restarting in [{}]", request.delay);
threadPool.schedule(request.delay, ThreadPool.Names.GENERIC, new Runnable() {
@Override
public void run() {
boolean restartWithWrapper = false;
if (System.getProperty("elasticsearch-service") != null) {
try {
Class wrapperManager = settings.getClassLoader().loadClass("org.tanukisoftware.wrapper.WrapperManager");
logger.info("Initiating requested restart (using service)");
wrapperManager.getMethod("restartAndReturn").invoke(null);
restartWithWrapper = true;
} catch (Throwable e) {
logger.error("failed to initial restart on service wrapper", e);
}
}
if (!restartWithWrapper) {
logger.info("Initiating requested restart");
try {
node.stop();
node.start();
} catch (Exception e) {
logger.warn("Failed to restart", e);
} finally {
restartRequested.set(false);
}
}
}
});
return new NodesRestartResponse.NodeRestartResponse(clusterService.localNode());
}
@Override
protected boolean accumulateExceptions() {
return false;
}
protected static class NodeRestartRequest extends NodeOperationRequest {
TimeValue delay;
private NodeRestartRequest() {
}
private NodeRestartRequest(String nodeId, NodesRestartRequest request) {
super(request, nodeId);
this.delay = request.delay;
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
delay = readTimeValue(in);
}
@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
delay.writeTo(out);
}
}
}