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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.gateway;
import org.elasticsearch.action.support.nodes.BaseNodeResponse;
import org.elasticsearch.action.support.nodes.BaseNodesResponse;
import org.elasticsearch.cluster.ClusterChangedEvent;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.ClusterStateListener;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.cluster.routing.RoutingNodes;
import org.elasticsearch.cluster.routing.RoutingService;
import org.elasticsearch.cluster.routing.ShardRouting;
import org.elasticsearch.cluster.routing.allocation.FailedRerouteAllocation;
import org.elasticsearch.cluster.routing.allocation.RoutingAllocation;
import org.elasticsearch.cluster.routing.allocation.StartedRerouteAllocation;
import org.elasticsearch.common.component.AbstractComponent;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.lease.Releasables;
import org.elasticsearch.common.logging.ESLogger;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.util.concurrent.ConcurrentCollections;
import org.elasticsearch.index.shard.ShardId;
import org.elasticsearch.indices.store.TransportNodesListShardStoreMetaData;
import java.util.concurrent.ConcurrentMap;
/**
*
*/
public class GatewayAllocator extends AbstractComponent {
private RoutingService routingService;
private final PrimaryShardAllocator primaryShardAllocator;
private final ReplicaShardAllocator replicaShardAllocator;
private final ConcurrentMap<ShardId, AsyncShardFetch<TransportNodesListGatewayStartedShards.NodeGatewayStartedShards>> asyncFetchStarted = ConcurrentCollections.newConcurrentMap();
private final ConcurrentMap<ShardId, AsyncShardFetch<TransportNodesListShardStoreMetaData.NodeStoreFilesMetaData>> asyncFetchStore = ConcurrentCollections.newConcurrentMap();
@Inject
public GatewayAllocator(Settings settings, final TransportNodesListGatewayStartedShards startedAction, final TransportNodesListShardStoreMetaData storeAction) {
super(settings);
this.primaryShardAllocator = new InternalPrimaryShardAllocator(settings, startedAction);
this.replicaShardAllocator = new InternalReplicaShardAllocator(settings, storeAction);
}
public void setReallocation(final ClusterService clusterService, final RoutingService routingService) {
this.routingService = routingService;
clusterService.add(new ClusterStateListener() {
@Override
public void clusterChanged(ClusterChangedEvent event) {
boolean cleanCache = false;
DiscoveryNode localNode = event.state().nodes().localNode();
if (localNode != null) {
if (localNode.masterNode() == true && event.localNodeMaster() == false) {
cleanCache = true;
}
} else {
cleanCache = true;
}
if (cleanCache) {
Releasables.close(asyncFetchStarted.values());
asyncFetchStarted.clear();
Releasables.close(asyncFetchStore.values());
asyncFetchStore.clear();
}
}
});
}
public int getNumberOfInFlightFetch() {
int count = 0;
for (AsyncShardFetch<TransportNodesListGatewayStartedShards.NodeGatewayStartedShards> fetch : asyncFetchStarted.values()) {
count += fetch.getNumberOfInFlightFetches();
}
for (AsyncShardFetch<TransportNodesListShardStoreMetaData.NodeStoreFilesMetaData> fetch : asyncFetchStore.values()) {
count += fetch.getNumberOfInFlightFetches();
}
return count;
}
public void applyStartedShards(StartedRerouteAllocation allocation) {
for (ShardRouting shard : allocation.startedShards()) {
Releasables.close(asyncFetchStarted.remove(shard.shardId()));
Releasables.close(asyncFetchStore.remove(shard.shardId()));
}
}
public void applyFailedShards(FailedRerouteAllocation allocation) {
for (FailedRerouteAllocation.FailedShard shard : allocation.failedShards()) {
Releasables.close(asyncFetchStarted.remove(shard.shard.shardId()));
Releasables.close(asyncFetchStore.remove(shard.shard.shardId()));
}
}
public boolean allocateUnassigned(final RoutingAllocation allocation) {
boolean changed = false;
RoutingNodes.UnassignedShards unassigned = allocation.routingNodes().unassigned();
unassigned.sort(PriorityComparator.getAllocationComparator(allocation)); // sort for priority ordering
changed |= primaryShardAllocator.allocateUnassigned(allocation);
changed |= replicaShardAllocator.processExistingRecoveries(allocation);
changed |= replicaShardAllocator.allocateUnassigned(allocation);
return changed;
}
class InternalAsyncFetch<T extends BaseNodeResponse> extends AsyncShardFetch<T> {
public InternalAsyncFetch(ESLogger logger, String type, ShardId shardId, List<? extends BaseNodesResponse<T>, T> action) {
super(logger, type, shardId, action);
}
@Override
protected void reroute(ShardId shardId, String reason) {
logger.trace("{} scheduling reroute for {}", shardId, reason);
routingService.reroute("async_shard_fetch");
}
}
class InternalPrimaryShardAllocator extends PrimaryShardAllocator {
private final TransportNodesListGatewayStartedShards startedAction;
public InternalPrimaryShardAllocator(Settings settings, TransportNodesListGatewayStartedShards startedAction) {
super(settings);
this.startedAction = startedAction;
}
@Override
protected AsyncShardFetch.FetchResult<TransportNodesListGatewayStartedShards.NodeGatewayStartedShards> fetchData(ShardRouting shard, RoutingAllocation allocation) {
AsyncShardFetch<TransportNodesListGatewayStartedShards.NodeGatewayStartedShards> fetch = asyncFetchStarted.get(shard.shardId());
if (fetch == null) {
fetch = new InternalAsyncFetch<>(logger, "shard_started", shard.shardId(), startedAction);
asyncFetchStarted.put(shard.shardId(), fetch);
}
AsyncShardFetch.FetchResult<TransportNodesListGatewayStartedShards.NodeGatewayStartedShards> shardState =
fetch.fetchData(allocation.nodes(), allocation.metaData(), allocation.getIgnoreNodes(shard.shardId()));
if (shardState.hasData() == true) {
shardState.processAllocation(allocation);
}
return shardState;
}
}
class InternalReplicaShardAllocator extends ReplicaShardAllocator {
private final TransportNodesListShardStoreMetaData storeAction;
public InternalReplicaShardAllocator(Settings settings, TransportNodesListShardStoreMetaData storeAction) {
super(settings);
this.storeAction = storeAction;
}
@Override
protected AsyncShardFetch.FetchResult<TransportNodesListShardStoreMetaData.NodeStoreFilesMetaData> fetchData(ShardRouting shard, RoutingAllocation allocation) {
AsyncShardFetch<TransportNodesListShardStoreMetaData.NodeStoreFilesMetaData> fetch = asyncFetchStore.get(shard.shardId());
if (fetch == null) {
fetch = new InternalAsyncFetch<>(logger, "shard_store", shard.shardId(), storeAction);
asyncFetchStore.put(shard.shardId(), fetch);
}
AsyncShardFetch.FetchResult<TransportNodesListShardStoreMetaData.NodeStoreFilesMetaData> shardStores =
fetch.fetchData(allocation.nodes(), allocation.metaData(), allocation.getIgnoreNodes(shard.shardId()));
if (shardStores.hasData() == true) {
shardStores.processAllocation(allocation);
}
return shardStores;
}
}
}
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