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Elasticsearch - Open Source, Distributed, RESTful Search Engine
/*
* 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.search.action;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.ActionListenerResponseHandler;
import org.elasticsearch.action.IndicesRequest;
import org.elasticsearch.action.OriginalIndices;
import org.elasticsearch.action.search.ClearScrollRequest;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.support.IndicesOptions;
import org.elasticsearch.cluster.node.DiscoveryNode;
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.search.SearchService;
import org.elasticsearch.search.dfs.DfsSearchResult;
import org.elasticsearch.search.fetch.*;
import org.elasticsearch.search.internal.InternalScrollSearchRequest;
import org.elasticsearch.search.internal.ShardSearchTransportRequest;
import org.elasticsearch.search.query.QuerySearchRequest;
import org.elasticsearch.search.query.QuerySearchResult;
import org.elasticsearch.search.query.QuerySearchResultProvider;
import org.elasticsearch.search.query.ScrollQuerySearchResult;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.*;
import java.io.IOException;
/**
* An encapsulation of {@link org.elasticsearch.search.SearchService} operations exposed through
* transport.
*/
public class SearchServiceTransportAction extends AbstractComponent {
public static final String FREE_CONTEXT_SCROLL_ACTION_NAME = "indices:data/read/search[free_context/scroll]";
public static final String FREE_CONTEXT_ACTION_NAME = "indices:data/read/search[free_context]";
public static final String CLEAR_SCROLL_CONTEXTS_ACTION_NAME = "indices:data/read/search[clear_scroll_contexts]";
public static final String DFS_ACTION_NAME = "indices:data/read/search[phase/dfs]";
public static final String QUERY_ACTION_NAME = "indices:data/read/search[phase/query]";
public static final String QUERY_ID_ACTION_NAME = "indices:data/read/search[phase/query/id]";
public static final String QUERY_SCROLL_ACTION_NAME = "indices:data/read/search[phase/query/scroll]";
public static final String QUERY_FETCH_ACTION_NAME = "indices:data/read/search[phase/query+fetch]";
public static final String QUERY_QUERY_FETCH_ACTION_NAME = "indices:data/read/search[phase/query/query+fetch]";
public static final String QUERY_FETCH_SCROLL_ACTION_NAME = "indices:data/read/search[phase/query+fetch/scroll]";
public static final String FETCH_ID_SCROLL_ACTION_NAME = "indices:data/read/search[phase/fetch/id/scroll]";
public static final String FETCH_ID_ACTION_NAME = "indices:data/read/search[phase/fetch/id]";
public static final String SCAN_ACTION_NAME = "indices:data/read/search[phase/scan]";
public static final String SCAN_SCROLL_ACTION_NAME = "indices:data/read/search[phase/scan/scroll]";
private final TransportService transportService;
private final SearchService searchService;
@Inject
public SearchServiceTransportAction(Settings settings, TransportService transportService, SearchService searchService) {
super(settings);
this.transportService = transportService;
this.searchService = searchService;
transportService.registerRequestHandler(FREE_CONTEXT_SCROLL_ACTION_NAME, ScrollFreeContextRequest.class, ThreadPool.Names.SAME, new FreeContextTransportHandler<>());
transportService.registerRequestHandler(FREE_CONTEXT_ACTION_NAME, SearchFreeContextRequest.class, ThreadPool.Names.SAME, new FreeContextTransportHandler());
transportService.registerRequestHandler(CLEAR_SCROLL_CONTEXTS_ACTION_NAME, ClearScrollContextsRequest.class, ThreadPool.Names.SAME, new ClearScrollContextsTransportHandler());
transportService.registerRequestHandler(DFS_ACTION_NAME, ShardSearchTransportRequest.class, ThreadPool.Names.SEARCH, new SearchDfsTransportHandler());
transportService.registerRequestHandler(QUERY_ACTION_NAME, ShardSearchTransportRequest.class, ThreadPool.Names.SEARCH, new SearchQueryTransportHandler());
transportService.registerRequestHandler(QUERY_ID_ACTION_NAME, QuerySearchRequest.class, ThreadPool.Names.SEARCH, new SearchQueryByIdTransportHandler());
transportService.registerRequestHandler(QUERY_SCROLL_ACTION_NAME, InternalScrollSearchRequest.class, ThreadPool.Names.SEARCH, new SearchQueryScrollTransportHandler());
transportService.registerRequestHandler(QUERY_FETCH_ACTION_NAME, ShardSearchTransportRequest.class, ThreadPool.Names.SEARCH, new SearchQueryFetchTransportHandler());
transportService.registerRequestHandler(QUERY_QUERY_FETCH_ACTION_NAME, QuerySearchRequest.class, ThreadPool.Names.SEARCH, new SearchQueryQueryFetchTransportHandler());
transportService.registerRequestHandler(QUERY_FETCH_SCROLL_ACTION_NAME, InternalScrollSearchRequest.class, ThreadPool.Names.SEARCH, new SearchQueryFetchScrollTransportHandler());
transportService.registerRequestHandler(FETCH_ID_SCROLL_ACTION_NAME, ShardFetchRequest.class, ThreadPool.Names.SEARCH, new FetchByIdTransportHandler<>());
transportService.registerRequestHandler(FETCH_ID_ACTION_NAME, ShardFetchSearchRequest.class, ThreadPool.Names.SEARCH, new FetchByIdTransportHandler());
transportService.registerRequestHandler(SCAN_ACTION_NAME, ShardSearchTransportRequest.class, ThreadPool.Names.SEARCH, new SearchScanTransportHandler());
transportService.registerRequestHandler(SCAN_SCROLL_ACTION_NAME, InternalScrollSearchRequest.class, ThreadPool.Names.SEARCH, new SearchScanScrollTransportHandler());
}
public void sendFreeContext(DiscoveryNode node, final long contextId, SearchRequest request) {
transportService.sendRequest(node, FREE_CONTEXT_ACTION_NAME, new SearchFreeContextRequest(request, contextId), new ActionListenerResponseHandler(new ActionListener() {
@Override
public void onResponse(SearchFreeContextResponse response) {
// no need to respond if it was freed or not
}
@Override
public void onFailure(Throwable e) {
}
}) {
@Override
public SearchFreeContextResponse newInstance() {
return new SearchFreeContextResponse();
}
});
}
public void sendFreeContext(DiscoveryNode node, long contextId, ClearScrollRequest request, final ActionListener listener) {
transportService.sendRequest(node, FREE_CONTEXT_SCROLL_ACTION_NAME, new ScrollFreeContextRequest(request, contextId), new ActionListenerResponseHandler(listener) {
@Override
public SearchFreeContextResponse newInstance() {
return new SearchFreeContextResponse();
}
});
}
public void sendClearAllScrollContexts(DiscoveryNode node, ClearScrollRequest request, final ActionListener listener) {
transportService.sendRequest(node, CLEAR_SCROLL_CONTEXTS_ACTION_NAME, new ClearScrollContextsRequest(request), new ActionListenerResponseHandler(listener) {
@Override
public TransportResponse newInstance() {
return TransportResponse.Empty.INSTANCE;
}
});
}
public void sendExecuteDfs(DiscoveryNode node, final ShardSearchTransportRequest request, final ActionListener listener) {
transportService.sendRequest(node, DFS_ACTION_NAME, request, new ActionListenerResponseHandler(listener) {
@Override
public DfsSearchResult newInstance() {
return new DfsSearchResult();
}
});
}
public void sendExecuteQuery(DiscoveryNode node, final ShardSearchTransportRequest request, final ActionListener listener) {
transportService.sendRequest(node, QUERY_ACTION_NAME, request, new ActionListenerResponseHandler(listener) {
@Override
public QuerySearchResult newInstance() {
return new QuerySearchResult();
}
});
}
public void sendExecuteQuery(DiscoveryNode node, final QuerySearchRequest request, final ActionListener listener) {
transportService.sendRequest(node, QUERY_ID_ACTION_NAME, request, new ActionListenerResponseHandler(listener) {
@Override
public QuerySearchResult newInstance() {
return new QuerySearchResult();
}
});
}
public void sendExecuteQuery(DiscoveryNode node, final InternalScrollSearchRequest request, final ActionListener listener) {
transportService.sendRequest(node, QUERY_SCROLL_ACTION_NAME, request, new ActionListenerResponseHandler(listener) {
@Override
public ScrollQuerySearchResult newInstance() {
return new ScrollQuerySearchResult();
}
});
}
public void sendExecuteFetch(DiscoveryNode node, final ShardSearchTransportRequest request, final ActionListener listener) {
transportService.sendRequest(node, QUERY_FETCH_ACTION_NAME, request, new ActionListenerResponseHandler(listener) {
@Override
public QueryFetchSearchResult newInstance() {
return new QueryFetchSearchResult();
}
});
}
public void sendExecuteFetch(DiscoveryNode node, final QuerySearchRequest request, final ActionListener listener) {
transportService.sendRequest(node, QUERY_QUERY_FETCH_ACTION_NAME, request, new ActionListenerResponseHandler(listener) {
@Override
public QueryFetchSearchResult newInstance() {
return new QueryFetchSearchResult();
}
});
}
public void sendExecuteFetch(DiscoveryNode node, final InternalScrollSearchRequest request, final ActionListener listener) {
transportService.sendRequest(node, QUERY_FETCH_SCROLL_ACTION_NAME, request, new ActionListenerResponseHandler(listener) {
@Override
public ScrollQueryFetchSearchResult newInstance() {
return new ScrollQueryFetchSearchResult();
}
});
}
public void sendExecuteFetch(DiscoveryNode node, final ShardFetchSearchRequest request, final ActionListener listener) {
sendExecuteFetch(node, FETCH_ID_ACTION_NAME, request, listener);
}
public void sendExecuteFetchScroll(DiscoveryNode node, final ShardFetchRequest request, final ActionListener listener) {
sendExecuteFetch(node, FETCH_ID_SCROLL_ACTION_NAME, request, listener);
}
private void sendExecuteFetch(DiscoveryNode node, String action, final ShardFetchRequest request, final ActionListener listener) {
transportService.sendRequest(node, action, request, new ActionListenerResponseHandler(listener) {
@Override
public FetchSearchResult newInstance() {
return new FetchSearchResult();
}
});
}
public void sendExecuteScan(DiscoveryNode node, final ShardSearchTransportRequest request, final ActionListener listener) {
transportService.sendRequest(node, SCAN_ACTION_NAME, request, new ActionListenerResponseHandler(listener) {
@Override
public QuerySearchResult newInstance() {
return new QuerySearchResult();
}
});
}
public void sendExecuteScan(DiscoveryNode node, final InternalScrollSearchRequest request, final ActionListener listener) {
transportService.sendRequest(node, SCAN_SCROLL_ACTION_NAME, request, new ActionListenerResponseHandler(listener) {
@Override
public ScrollQueryFetchSearchResult newInstance() {
return new ScrollQueryFetchSearchResult();
}
});
}
public static class ScrollFreeContextRequest extends TransportRequest {
private long id;
public ScrollFreeContextRequest() {
}
ScrollFreeContextRequest(ClearScrollRequest request, long id) {
this((TransportRequest) request, id);
}
private ScrollFreeContextRequest(TransportRequest request, long id) {
super(request);
this.id = id;
}
public long id() {
return this.id;
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
id = in.readLong();
}
@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
out.writeLong(id);
}
}
public static class SearchFreeContextRequest extends ScrollFreeContextRequest implements IndicesRequest {
private OriginalIndices originalIndices;
public SearchFreeContextRequest() {
}
SearchFreeContextRequest(SearchRequest request, long id) {
super(request, id);
this.originalIndices = new OriginalIndices(request);
}
@Override
public String[] indices() {
if (originalIndices == null) {
return null;
}
return originalIndices.indices();
}
@Override
public IndicesOptions indicesOptions() {
if (originalIndices == null) {
return null;
}
return originalIndices.indicesOptions();
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
originalIndices = OriginalIndices.readOriginalIndices(in);
}
@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
OriginalIndices.writeOriginalIndices(originalIndices, out);
}
}
public static class SearchFreeContextResponse extends TransportResponse {
private boolean freed;
SearchFreeContextResponse() {
}
SearchFreeContextResponse(boolean freed) {
this.freed = freed;
}
public boolean isFreed() {
return freed;
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
freed = in.readBoolean();
}
@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
out.writeBoolean(freed);
}
}
class FreeContextTransportHandler extends TransportRequestHandler {
@Override
public void messageReceived(FreeContextRequest request, TransportChannel channel) throws Exception {
boolean freed = searchService.freeContext(request.id());
channel.sendResponse(new SearchFreeContextResponse(freed));
}
}
public static class ClearScrollContextsRequest extends TransportRequest {
public ClearScrollContextsRequest() {
}
ClearScrollContextsRequest(TransportRequest request) {
super(request);
}
}
class ClearScrollContextsTransportHandler extends TransportRequestHandler {
@Override
public void messageReceived(ClearScrollContextsRequest request, TransportChannel channel) throws Exception {
searchService.freeAllScrollContexts();
channel.sendResponse(TransportResponse.Empty.INSTANCE);
}
}
class SearchDfsTransportHandler extends TransportRequestHandler {
@Override
public void messageReceived(ShardSearchTransportRequest request, TransportChannel channel) throws Exception {
DfsSearchResult result = searchService.executeDfsPhase(request);
channel.sendResponse(result);
}
}
class SearchQueryTransportHandler extends TransportRequestHandler {
@Override
public void messageReceived(ShardSearchTransportRequest request, TransportChannel channel) throws Exception {
QuerySearchResultProvider result = searchService.executeQueryPhase(request);
channel.sendResponse(result);
}
}
class SearchQueryByIdTransportHandler extends TransportRequestHandler {
@Override
public void messageReceived(QuerySearchRequest request, TransportChannel channel) throws Exception {
QuerySearchResult result = searchService.executeQueryPhase(request);
channel.sendResponse(result);
}
}
class SearchQueryScrollTransportHandler extends TransportRequestHandler {
@Override
public void messageReceived(InternalScrollSearchRequest request, TransportChannel channel) throws Exception {
ScrollQuerySearchResult result = searchService.executeQueryPhase(request);
channel.sendResponse(result);
}
}
class SearchQueryFetchTransportHandler extends TransportRequestHandler {
@Override
public void messageReceived(ShardSearchTransportRequest request, TransportChannel channel) throws Exception {
QueryFetchSearchResult result = searchService.executeFetchPhase(request);
channel.sendResponse(result);
}
}
class SearchQueryQueryFetchTransportHandler extends TransportRequestHandler {
@Override
public void messageReceived(QuerySearchRequest request, TransportChannel channel) throws Exception {
QueryFetchSearchResult result = searchService.executeFetchPhase(request);
channel.sendResponse(result);
}
}
class FetchByIdTransportHandler extends TransportRequestHandler {
@Override
public void messageReceived(Request request, TransportChannel channel) throws Exception {
FetchSearchResult result = searchService.executeFetchPhase(request);
channel.sendResponse(result);
}
}
class SearchQueryFetchScrollTransportHandler extends TransportRequestHandler {
@Override
public void messageReceived(InternalScrollSearchRequest request, TransportChannel channel) throws Exception {
ScrollQueryFetchSearchResult result = searchService.executeFetchPhase(request);
channel.sendResponse(result);
}
}
@Deprecated // remove in 3.0
class SearchScanTransportHandler extends TransportRequestHandler {
@Override
public void messageReceived(ShardSearchTransportRequest request, TransportChannel channel) throws Exception {
QuerySearchResult result = searchService.executeScan(request);
channel.sendResponse(result);
}
}
class SearchScanScrollTransportHandler extends TransportRequestHandler {
@Override
public void messageReceived(InternalScrollSearchRequest request, TransportChannel channel) throws Exception {
ScrollQueryFetchSearchResult result = searchService.executeScan(request);
channel.sendResponse(result);
}
}
}