org.elasticsearch.action.search.MultiSearchRequest Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of elasticsearch Show documentation
Show all versions of elasticsearch Show documentation
Elasticsearch subproject :server
/*
* 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.search;
import org.elasticsearch.action.ActionRequest;
import org.elasticsearch.action.ActionRequestValidationException;
import org.elasticsearch.action.CompositeIndicesRequest;
import org.elasticsearch.action.support.IndicesOptions;
import org.elasticsearch.common.CheckedBiConsumer;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.xcontent.NamedXContentRegistry;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Objects;
import static org.elasticsearch.action.ValidateActions.addValidationError;
import static org.elasticsearch.common.xcontent.support.XContentMapValues.nodeBooleanValue;
import static org.elasticsearch.common.xcontent.support.XContentMapValues.nodeStringArrayValue;
import static org.elasticsearch.common.xcontent.support.XContentMapValues.nodeStringValue;
/**
* A multi search API request.
*/
public class MultiSearchRequest extends ActionRequest implements CompositeIndicesRequest {
public static final int MAX_CONCURRENT_SEARCH_REQUESTS_DEFAULT = 0;
private int maxConcurrentSearchRequests = 0;
private List requests = new ArrayList<>();
private IndicesOptions indicesOptions = IndicesOptions.strictExpandOpenAndForbidClosed();
/**
* Add a search request to execute. Note, the order is important, the search response will be returned in the
* same order as the search requests.
*/
public MultiSearchRequest add(SearchRequestBuilder request) {
requests.add(request.request());
return this;
}
/**
* Add a search request to execute. Note, the order is important, the search response will be returned in the
* same order as the search requests.
*/
public MultiSearchRequest add(SearchRequest request) {
requests.add(request);
return this;
}
/**
* Returns the amount of search requests specified in this multi search requests are allowed to be ran concurrently.
*/
public int maxConcurrentSearchRequests() {
return maxConcurrentSearchRequests;
}
/**
* Sets how many search requests specified in this multi search requests are allowed to be ran concurrently.
*/
public MultiSearchRequest maxConcurrentSearchRequests(int maxConcurrentSearchRequests) {
if (maxConcurrentSearchRequests < 1) {
throw new IllegalArgumentException("maxConcurrentSearchRequests must be positive");
}
this.maxConcurrentSearchRequests = maxConcurrentSearchRequests;
return this;
}
public List requests() {
return this.requests;
}
@Override
public ActionRequestValidationException validate() {
ActionRequestValidationException validationException = null;
if (requests.isEmpty()) {
validationException = addValidationError("no requests added", validationException);
}
for (int i = 0; i < requests.size(); i++) {
ActionRequestValidationException ex = requests.get(i).validate();
if (ex != null) {
if (validationException == null) {
validationException = new ActionRequestValidationException();
}
validationException.addValidationErrors(ex.validationErrors());
}
}
return validationException;
}
public IndicesOptions indicesOptions() {
return indicesOptions;
}
public MultiSearchRequest indicesOptions(IndicesOptions indicesOptions) {
this.indicesOptions = indicesOptions;
return this;
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
maxConcurrentSearchRequests = in.readVInt();
int size = in.readVInt();
for (int i = 0; i < size; i++) {
SearchRequest request = new SearchRequest();
request.readFrom(in);
requests.add(request);
}
}
@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
out.writeVInt(maxConcurrentSearchRequests);
out.writeVInt(requests.size());
for (SearchRequest request : requests) {
request.writeTo(out);
}
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
MultiSearchRequest that = (MultiSearchRequest) o;
return maxConcurrentSearchRequests == that.maxConcurrentSearchRequests &&
Objects.equals(requests, that.requests) &&
Objects.equals(indicesOptions, that.indicesOptions);
}
@Override
public int hashCode() {
return Objects.hash(maxConcurrentSearchRequests, requests, indicesOptions);
}
public static void readMultiLineFormat(BytesReference data,
XContent xContent,
CheckedBiConsumer consumer,
String[] indices,
IndicesOptions indicesOptions,
String[] types,
String routing,
String searchType,
NamedXContentRegistry registry,
boolean allowExplicitIndex) throws IOException {
int from = 0;
int length = data.length();
byte marker = xContent.streamSeparator();
while (true) {
int nextMarker = findNextMarker(marker, from, data, length);
if (nextMarker == -1) {
break;
}
// support first line with \n
if (nextMarker == 0) {
from = nextMarker + 1;
continue;
}
SearchRequest searchRequest = new SearchRequest();
if (indices != null) {
searchRequest.indices(indices);
}
if (indicesOptions != null) {
searchRequest.indicesOptions(indicesOptions);
}
if (types != null && types.length > 0) {
searchRequest.types(types);
}
if (routing != null) {
searchRequest.routing(routing);
}
if (searchType != null) {
searchRequest.searchType(searchType);
}
IndicesOptions defaultOptions = SearchRequest.DEFAULT_INDICES_OPTIONS;
// now parse the action
if (nextMarker - from > 0) {
try (XContentParser parser = xContent.createParser(registry, data.slice(from, nextMarker - from))) {
Map source = parser.map();
for (Map.Entry entry : source.entrySet()) {
Object value = entry.getValue();
if ("index".equals(entry.getKey()) || "indices".equals(entry.getKey())) {
if (!allowExplicitIndex) {
throw new IllegalArgumentException("explicit index in multi search is not allowed");
}
searchRequest.indices(nodeStringArrayValue(value));
} else if ("type".equals(entry.getKey()) || "types".equals(entry.getKey())) {
searchRequest.types(nodeStringArrayValue(value));
} else if ("search_type".equals(entry.getKey()) || "searchType".equals(entry.getKey())) {
searchRequest.searchType(nodeStringValue(value, null));
} else if ("request_cache".equals(entry.getKey()) || "requestCache".equals(entry.getKey())) {
searchRequest.requestCache(nodeBooleanValue(value, entry.getKey()));
} else if ("preference".equals(entry.getKey())) {
searchRequest.preference(nodeStringValue(value, null));
} else if ("routing".equals(entry.getKey())) {
searchRequest.routing(nodeStringValue(value, null));
}
}
defaultOptions = IndicesOptions.fromMap(source, defaultOptions);
}
}
searchRequest.indicesOptions(defaultOptions);
// move pointers
from = nextMarker + 1;
// now for the body
nextMarker = findNextMarker(marker, from, data, length);
if (nextMarker == -1) {
break;
}
BytesReference bytes = data.slice(from, nextMarker - from);
try (XContentParser parser = xContent.createParser(registry, bytes)) {
consumer.accept(searchRequest, parser);
}
// move pointers
from = nextMarker + 1;
}
}
private static int findNextMarker(byte marker, int from, BytesReference data, int length) {
for (int i = from; i < length; i++) {
if (data.get(i) == marker) {
return i;
}
}
if (from != length) {
throw new IllegalArgumentException("The msearch request must be terminated by a newline [\n]");
}
return -1;
}
public static byte[] writeMultiLineFormat(MultiSearchRequest multiSearchRequest, XContent xContent) throws IOException {
ByteArrayOutputStream output = new ByteArrayOutputStream();
for (SearchRequest request : multiSearchRequest.requests()) {
try (XContentBuilder xContentBuilder = XContentBuilder.builder(xContent)) {
xContentBuilder.startObject();
if (request.indices() != null) {
xContentBuilder.field("index", request.indices());
}
if (request.indicesOptions() != null && request.indicesOptions() != SearchRequest.DEFAULT_INDICES_OPTIONS) {
if (request.indicesOptions().expandWildcardsOpen() && request.indicesOptions().expandWildcardsClosed()) {
xContentBuilder.field("expand_wildcards", "all");
} else if (request.indicesOptions().expandWildcardsOpen()) {
xContentBuilder.field("expand_wildcards", "open");
} else if (request.indicesOptions().expandWildcardsClosed()) {
xContentBuilder.field("expand_wildcards", "closed");
} else {
xContentBuilder.field("expand_wildcards", "none");
}
xContentBuilder.field("ignore_unavailable", request.indicesOptions().ignoreUnavailable());
xContentBuilder.field("allow_no_indices", request.indicesOptions().allowNoIndices());
}
if (request.types() != null) {
xContentBuilder.field("types", request.types());
}
if (request.searchType() != null) {
xContentBuilder.field("search_type", request.searchType().name().toLowerCase(Locale.ROOT));
}
if (request.requestCache() != null) {
xContentBuilder.field("request_cache", request.requestCache());
}
if (request.preference() != null) {
xContentBuilder.field("preference", request.preference());
}
if (request.routing() != null) {
xContentBuilder.field("routing", request.routing());
}
xContentBuilder.endObject();
xContentBuilder.bytes().writeTo(output);
}
output.write(xContent.streamSeparator());
try (XContentBuilder xContentBuilder = XContentBuilder.builder(xContent)) {
if (request.source() != null) {
request.source().toXContent(xContentBuilder, ToXContent.EMPTY_PARAMS);
} else {
xContentBuilder.startObject();
xContentBuilder.endObject();
}
xContentBuilder.bytes().writeTo(output);
}
output.write(xContent.streamSeparator());
}
return output.toByteArray();
}
}