package de.spinscale.elasticsearch.action.suggest.suggest;
import de.spinscale.elasticsearch.service.suggest.ShardSuggestService;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.action.ShardOperationFailedException;
import org.elasticsearch.action.support.DefaultShardOperationFailedException;
import org.elasticsearch.action.support.broadcast.BroadcastShardOperationFailedException;
import org.elasticsearch.action.support.broadcast.TransportBroadcastOperationAction;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.block.ClusterBlockException;
import org.elasticsearch.cluster.block.ClusterBlockLevel;
import org.elasticsearch.cluster.routing.GroupShardsIterator;
import org.elasticsearch.cluster.routing.ShardRouting;
import org.elasticsearch.common.collect.ImmutableSortedSet;
import org.elasticsearch.common.collect.Lists;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.service.IndexService;
import org.elasticsearch.indices.IndicesService;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.util.List;
import java.util.concurrent.atomic.AtomicReferenceArray;
import static org.elasticsearch.common.collect.Lists.newArrayList;
public class TransportSuggestAction extends TransportBroadcastOperationAction<SuggestRequest, SuggestResponse, ShardSuggestRequest, ShardSuggestResponse> {
private final IndicesService indicesService;
@Inject public TransportSuggestAction(Settings settings, ThreadPool threadPool,
ClusterService clusterService, TransportService transportService,
IndicesService indicesService) {
super(settings, SuggestAction.NAME, threadPool, clusterService, transportService);
this.indicesService = indicesService;
}
@Override
protected String executor() {
return ThreadPool.Names.SEARCH;
}
@Override
protected SuggestRequest newRequest() {
return new SuggestRequest();
}
@Override
protected SuggestResponse newResponse(SuggestRequest request,
AtomicReferenceArray shardsResponses, ClusterState clusterState) {
logger.trace("Entered TransportSuggestAction.newResponse()");
int successfulShards = 0;
int failedShards = 0;
List<ShardOperationFailedException> shardFailures = null;
List<String> items = Lists.newArrayList();
for (int i = 0; i < shardsResponses.length(); i++) {
Object shardResponse = shardsResponses.get(i);
if (shardResponse == null) {
failedShards++;
} else if (shardResponse instanceof BroadcastShardOperationFailedException) {
failedShards++;
if (shardFailures == null) {
shardFailures = newArrayList();
}
shardFailures.add(new DefaultShardOperationFailedException((BroadcastShardOperationFailedException) shardResponse));
} else if (shardResponse instanceof ShardSuggestResponse) {
ShardSuggestResponse shardSuggestResponse = (ShardSuggestResponse) shardResponse;
List<String> shardItems = shardSuggestResponse.suggestions();
items.addAll(shardItems);
successfulShards++;
} else {
successfulShards++;
}
}
List<String> resultItems = ImmutableSortedSet.copyOf(items).asList();
return new SuggestResponse(resultItems.subList(0, Math.min(resultItems.size(), request.size())),
shardsResponses.length(), successfulShards, failedShards, shardFailures);
}
@Override
protected ShardSuggestRequest newShardRequest() {
return new ShardSuggestRequest();
}
@Override
protected ShardSuggestRequest newShardRequest(int numShards, ShardRouting shard, SuggestRequest request) {
return new ShardSuggestRequest(shard.index(), shard.id(), request);
}
@Override
protected ShardSuggestResponse newShardResponse() {
return new ShardSuggestResponse();
}
@Override
protected ShardSuggestResponse shardOperation(ShardSuggestRequest request) throws ElasticsearchException {
logger.trace("Entered TransportSuggestAction.shardOperation()");
IndexService indexService = indicesService.indexServiceSafe(request.index());
ShardSuggestService suggestShardService = indexService.shardInjectorSafe(request.shardId()).getInstance(ShardSuggestService.class);
return suggestShardService.suggest(request);
}
@Override
protected GroupShardsIterator shards(ClusterState clusterState,
SuggestRequest request, String[] concreteIndices) {
logger.trace("Entered TransportSuggestAction.shards()");
return clusterService.operationRouting().searchShards(clusterState, request.indices(), concreteIndices, null, null);
}
@Override
protected ClusterBlockException checkGlobalBlock(ClusterState state, SuggestRequest request) {
return state.blocks().globalBlockedException(ClusterBlockLevel.METADATA);
}
@Override
protected ClusterBlockException checkRequestBlock(ClusterState state, SuggestRequest request, String[] concreteIndices) {
return state.blocks().indicesBlockedException(ClusterBlockLevel.METADATA, concreteIndices);
}
}