/*
* 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.apache.lucene.store.ByteArrayDataInput;
import org.apache.lucene.store.RAMOutputStream;
import org.elasticsearch.common.util.concurrent.AtomicArray;
import org.elasticsearch.search.SearchPhaseResult;
import org.elasticsearch.search.internal.InternalScrollSearchRequest;
import java.io.IOException;
import java.util.Base64;
final class TransportSearchHelper {
static InternalScrollSearchRequest internalScrollSearchRequest(long id, SearchScrollRequest request) {
return new InternalScrollSearchRequest(request, id);
}
static String buildScrollId(AtomicArray<? extends SearchPhaseResult> searchPhaseResults) throws IOException {
try (RAMOutputStream out = new RAMOutputStream()) {
out.writeString(searchPhaseResults.length() == 1 ? ParsedScrollId.QUERY_AND_FETCH_TYPE : ParsedScrollId.QUERY_THEN_FETCH_TYPE);
out.writeVInt(searchPhaseResults.asList().size());
for (SearchPhaseResult searchPhaseResult : searchPhaseResults.asList()) {
out.writeLong(searchPhaseResult.getRequestId());
out.writeString(searchPhaseResult.getSearchShardTarget().getNodeId());
}
byte[] bytes = new byte[(int) out.getFilePointer()];
out.writeTo(bytes, 0);
return Base64.getUrlEncoder().encodeToString(bytes);
}
}
static ParsedScrollId parseScrollId(String scrollId) {
try {
byte[] bytes = Base64.getUrlDecoder().decode(scrollId);
ByteArrayDataInput in = new ByteArrayDataInput(bytes);
String type = in.readString();
ScrollIdForNode[] context = new ScrollIdForNode[in.readVInt()];
for (int i = 0; i < context.length; ++i) {
long id = in.readLong();
String target = in.readString();
context[i] = new ScrollIdForNode(target, id);
}
if (in.getPosition() != bytes.length) {
throw new IllegalArgumentException("Not all bytes were read");
}
return new ParsedScrollId(scrollId, type, context);
} catch (Exception e) {
throw new IllegalArgumentException("Cannot parse scroll id", e);
}
}
private TransportSearchHelper() {
}
}