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/*
* 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.cluster.action.index;
import org.apache.lucene.store.LockObtainFailedException;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.node.DiscoveryNodes;
import org.elasticsearch.common.component.AbstractComponent;
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.common.util.concurrent.AbstractRunnable;
import org.elasticsearch.index.Index;
import org.elasticsearch.index.IndexSettings;
import org.elasticsearch.indices.IndicesService;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.EmptyTransportResponseHandler;
import org.elasticsearch.transport.TransportChannel;
import org.elasticsearch.transport.TransportRequest;
import org.elasticsearch.transport.TransportRequestHandler;
import org.elasticsearch.transport.TransportResponse;
import org.elasticsearch.transport.TransportService;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.TimeUnit;
/**
*
*/
public class NodeIndexDeletedAction extends AbstractComponent {
public static final String INDEX_DELETED_ACTION_NAME = "internal:cluster/node/index/deleted";
public static final String INDEX_STORE_DELETED_ACTION_NAME = "internal:cluster/node/index_store/deleted";
private final ThreadPool threadPool;
private final TransportService transportService;
private final List<Listener> listeners = new CopyOnWriteArrayList<>();
private final IndicesService indicesService;
@Inject
public NodeIndexDeletedAction(Settings settings, ThreadPool threadPool, TransportService transportService, IndicesService indicesService) {
super(settings);
this.threadPool = threadPool;
this.transportService = transportService;
transportService.registerRequestHandler(INDEX_DELETED_ACTION_NAME, NodeIndexDeletedMessage::new, ThreadPool.Names.SAME, new NodeIndexDeletedTransportHandler());
transportService.registerRequestHandler(INDEX_STORE_DELETED_ACTION_NAME, NodeIndexStoreDeletedMessage::new, ThreadPool.Names.SAME, new NodeIndexStoreDeletedTransportHandler());
this.indicesService = indicesService;
}
public void add(Listener listener) {
listeners.add(listener);
}
public void remove(Listener listener) {
listeners.remove(listener);
}
public void nodeIndexDeleted(final ClusterState clusterState, final String index, final IndexSettings indexSettings, final String nodeId) {
final DiscoveryNodes nodes = clusterState.nodes();
transportService.sendRequest(clusterState.nodes().masterNode(),
INDEX_DELETED_ACTION_NAME, new NodeIndexDeletedMessage(index, nodeId), EmptyTransportResponseHandler.INSTANCE_SAME);
if (nodes.localNode().isDataNode() == false) {
logger.trace("[{}] not acking store deletion (not a data node)");
return;
}
threadPool.generic().execute(new AbstractRunnable() {
@Override
public void onFailure(Throwable t) {
logger.warn("[{}]failed to ack index store deleted for index", t, index);
}
@Override
protected void doRun() throws Exception {
lockIndexAndAck(index, nodes, nodeId, clusterState, indexSettings);
}
});
}
private void lockIndexAndAck(String index, DiscoveryNodes nodes, String nodeId, ClusterState clusterState, IndexSettings indexSettings) throws IOException {
try {
// we are waiting until we can lock the index / all shards on the node and then we ack the delete of the store to the
// master. If we can't acquire the locks here immediately there might be a shard of this index still holding on to the lock
// due to a "currently canceled recovery" or so. The shard will delete itself BEFORE the lock is released so it's guaranteed to be
// deleted by the time we get the lock
indicesService.processPendingDeletes(new Index(index), indexSettings, new TimeValue(30, TimeUnit.MINUTES));
transportService.sendRequest(clusterState.nodes().masterNode(),
INDEX_STORE_DELETED_ACTION_NAME, new NodeIndexStoreDeletedMessage(index, nodeId), EmptyTransportResponseHandler.INSTANCE_SAME);
} catch (LockObtainFailedException exc) {
logger.warn("[{}] failed to lock all shards for index - timed out after 30 seconds", index);
} catch (InterruptedException e) {
logger.warn("[{}] failed to lock all shards for index - interrupted", index);
}
}
public interface Listener {
void onNodeIndexDeleted(String index, String nodeId);
void onNodeIndexStoreDeleted(String index, String nodeId);
}
private class NodeIndexDeletedTransportHandler implements TransportRequestHandler<NodeIndexDeletedMessage> {
@Override
public void messageReceived(NodeIndexDeletedMessage message, TransportChannel channel) throws Exception {
for (Listener listener : listeners) {
listener.onNodeIndexDeleted(message.index, message.nodeId);
}
channel.sendResponse(TransportResponse.Empty.INSTANCE);
}
}
private class NodeIndexStoreDeletedTransportHandler implements TransportRequestHandler<NodeIndexStoreDeletedMessage> {
@Override
public void messageReceived(NodeIndexStoreDeletedMessage message, TransportChannel channel) throws Exception {
for (Listener listener : listeners) {
listener.onNodeIndexStoreDeleted(message.index, message.nodeId);
}
channel.sendResponse(TransportResponse.Empty.INSTANCE);
}
}
public static class NodeIndexDeletedMessage extends TransportRequest {
String index;
String nodeId;
public NodeIndexDeletedMessage() {
}
NodeIndexDeletedMessage(String index, String nodeId) {
this.index = index;
this.nodeId = nodeId;
}
@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
out.writeString(index);
out.writeString(nodeId);
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
index = in.readString();
nodeId = in.readString();
}
}
public static class NodeIndexStoreDeletedMessage extends TransportRequest {
String index;
String nodeId;
public NodeIndexStoreDeletedMessage() {
}
NodeIndexStoreDeletedMessage(String index, String nodeId) {
this.index = index;
this.nodeId = nodeId;
}
@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
out.writeString(index);
out.writeString(nodeId);
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
index = in.readString();
nodeId = in.readString();
}
}
}
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