package org.apache.blur.manager.status;
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.
*/
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import org.apache.blur.thrift.generated.BlurException;
import org.apache.blur.thrift.generated.BlurQueryStatus;
import org.apache.blur.thrift.generated.CpuTime;
import org.apache.blur.thrift.generated.QueryState;
import org.apache.blur.thrift.generated.Status;
import org.apache.blur.utils.BlurExecutorCompletionService;
import org.apache.blur.utils.ForkJoin.Merger;
public class MergerQueryStatus implements Merger<List<BlurQueryStatus>> {
private long _timeout;
public MergerQueryStatus(long timeout) {
_timeout = timeout;
}
@Override
public List<BlurQueryStatus> merge(BlurExecutorCompletionService<List<BlurQueryStatus>> service) throws BlurException {
Map<String, BlurQueryStatus> statusMap = new HashMap<String, BlurQueryStatus>();
while (service.getRemainingCount() > 0) {
Future<List<BlurQueryStatus>> future = service.poll(_timeout, TimeUnit.MILLISECONDS, true);
List<BlurQueryStatus> status = service.getResultThrowException(future);
addToMap(statusMap, status);
}
return new ArrayList<BlurQueryStatus>(statusMap.values());
}
private void addToMap(Map<String, BlurQueryStatus> statusMap, List<BlurQueryStatus> list) {
for (BlurQueryStatus status : list) {
BlurQueryStatus searchQueryStatus = statusMap.get(status.uuid);
if (searchQueryStatus == null) {
statusMap.put(status.uuid, status);
} else {
statusMap.put(status.uuid, merge(searchQueryStatus, status));
}
}
}
public static BlurQueryStatus merge(BlurQueryStatus s1, BlurQueryStatus s2) {
// Depending on the timing the status can be cleared (NOT_FOUND) on one shard server and not the other
if (s1.status == Status.NOT_FOUND) {
return s2;
}
if (s2.status == Status.NOT_FOUND) {
return s1;
}
s1.completeShards = s1.completeShards + s2.completeShards;
s1.totalShards = s1.totalShards + s2.totalShards;
if (s1.state != s2.state) {
if (s1.state == QueryState.INTERRUPTED || s2.state == QueryState.INTERRUPTED) {
s1.state = QueryState.INTERRUPTED;
} else if (s1.state == QueryState.RUNNING || s2.state == QueryState.RUNNING) {
s1.state = QueryState.RUNNING;
} else {
s1.state = QueryState.COMPLETE;
}
}
if (s1.cpuTimes == null) {
s1.cpuTimes = new HashMap<String, CpuTime>();
}
if (s2.cpuTimes != null) {
s1.cpuTimes.putAll(s2.cpuTimes);
}
return s1;
}
}