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/*
* Licensed to ElasticSearch and Shay Banon 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 com.google.common.collect.Lists;
import org.elasticsearch.ElasticSearchParseException;
import org.elasticsearch.action.ActionRequest;
import org.elasticsearch.action.ActionRequestValidationException;
import org.elasticsearch.action.support.IgnoreIndices;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.bytes.BytesArray;
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.XContent;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.common.xcontent.XContentParser;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import static org.elasticsearch.action.ValidateActions.addValidationError;
/**
* A multi search API request.
*/
public class MultiSearchRequest extends ActionRequest {
private List requests = Lists.newArrayList();
private IgnoreIndices ignoreIndices = IgnoreIndices.DEFAULT;
/**
* 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;
}
public MultiSearchRequest add(byte[] data, int from, int length, boolean contentUnsafe,
@Nullable String[] indices, @Nullable String[] types, @Nullable String searchType) throws Exception {
return add(new BytesArray(data, from, length), contentUnsafe, indices, types, searchType, IgnoreIndices.NONE);
}
public MultiSearchRequest add(BytesReference data, boolean contentUnsafe,
@Nullable String[] indices, @Nullable String[] types, @Nullable String searchType, IgnoreIndices ignoreIndices) throws Exception {
XContent xContent = XContentFactory.xContent(data);
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 (ignoreIndices != null) {
searchRequest.ignoreIndices(ignoreIndices);
}
if (types != null && types.length > 0) {
searchRequest.types(types);
}
searchRequest.searchType(searchType);
// now parse the action
if (nextMarker - from > 0) {
XContentParser parser = xContent.createParser(data.slice(from, nextMarker - from));
try {
// Move to START_OBJECT, if token is null, its an empty data
XContentParser.Token token = parser.nextToken();
if (token != null) {
assert token == XContentParser.Token.START_OBJECT;
String currentFieldName = null;
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token.isValue()) {
if ("index".equals(currentFieldName) || "indices".equals(currentFieldName)) {
searchRequest.indices(Strings.splitStringByCommaToArray(parser.text()));
} else if ("type".equals(currentFieldName) || "types".equals(currentFieldName)) {
searchRequest.types(Strings.splitStringByCommaToArray(parser.text()));
} else if ("search_type".equals(currentFieldName) || "searchType".equals(currentFieldName)) {
searchRequest.searchType(parser.text());
} else if ("preference".equals(currentFieldName)) {
searchRequest.preference(parser.text());
} else if ("routing".equals(currentFieldName)) {
searchRequest.routing(parser.text());
} else if ("ignore_indices".equals(currentFieldName) || "ignoreIndices".equals(currentFieldName)) {
searchRequest.ignoreIndices(IgnoreIndices.fromString(parser.text()));
}
} else if (token == XContentParser.Token.START_ARRAY) {
if ("index".equals(currentFieldName) || "indices".equals(currentFieldName)) {
searchRequest.indices(parseArray(parser));
} else if ("type".equals(currentFieldName) || "types".equals(currentFieldName)) {
searchRequest.types(parseArray(parser));
} else {
throw new ElasticSearchParseException(currentFieldName + " doesn't support arrays");
}
}
}
}
} finally {
parser.close();
}
}
// move pointers
from = nextMarker + 1;
// now for the body
nextMarker = findNextMarker(marker, from, data, length);
if (nextMarker == -1) {
break;
}
searchRequest.source(data.slice(from, nextMarker - from), contentUnsafe);
// move pointers
from = nextMarker + 1;
add(searchRequest);
}
return this;
}
private String[] parseArray(XContentParser parser) throws IOException {
final List list = new ArrayList();
assert parser.currentToken() == XContentParser.Token.START_ARRAY;
while (parser.nextToken() != XContentParser.Token.END_ARRAY) {
list.add(parser.text());
}
return list.toArray(new String[list.size()]);
}
private int findNextMarker(byte marker, int from, BytesReference data, int length) {
for (int i = from; i < length; i++) {
if (data.get(i) == marker) {
return i;
}
}
return -1;
}
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 IgnoreIndices ignoreIndices() {
return ignoreIndices;
}
public MultiSearchRequest ignoreIndices(IgnoreIndices ignoreIndices) {
this.ignoreIndices = ignoreIndices;
return this;
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
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(requests.size());
for (SearchRequest request : requests) {
request.writeTo(out);
}
}
}
