/**
* 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.
*/
package org.apache.drill.exec.work.user;
import java.util.UUID;
import org.apache.drill.exec.proto.ExecProtos.FragmentHandle;
import org.apache.drill.exec.proto.GeneralRPCProtos.Ack;
import org.apache.drill.exec.proto.UserBitShared.QueryId;
import org.apache.drill.exec.proto.UserBitShared.QueryResult;
import org.apache.drill.exec.proto.UserBitShared.QueryResult.QueryState;
import org.apache.drill.exec.proto.UserProtos.RequestResults;
import org.apache.drill.exec.proto.UserProtos.RunQuery;
import org.apache.drill.exec.rpc.Acks;
import org.apache.drill.exec.rpc.user.UserServer.UserClientConnection;
import org.apache.drill.exec.server.options.OptionManager;
import org.apache.drill.exec.store.SchemaFactory;
import org.apache.drill.exec.work.WorkManager.WorkerBee;
import org.apache.drill.exec.work.foreman.Foreman;
import org.apache.drill.exec.work.fragment.FragmentExecutor;
public class UserWorker{
static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(UserWorker.class);
private final WorkerBee bee;
public UserWorker(WorkerBee bee) {
super();
this.bee = bee;
}
public QueryId submitWork(UserClientConnection connection, RunQuery query){
UUID uuid = UUID.randomUUID();
QueryId id = QueryId.newBuilder().setPart1(uuid.getMostSignificantBits()).setPart2(uuid.getLeastSignificantBits()).build();
Foreman foreman = new Foreman(bee, bee.getContext(), connection, id, query);
bee.addNewForeman(foreman);
return id;
}
public QueryResult getResult(UserClientConnection connection, RequestResults req){
Foreman foreman = bee.getForemanForQueryId(req.getQueryId());
if(foreman == null) return QueryResult.newBuilder().setQueryState(QueryState.UNKNOWN_QUERY).build();
return foreman.getResult(connection, req);
}
public Ack cancelQuery(QueryId query){
Foreman foreman = bee.getForemanForQueryId(query);
if(foreman != null){
foreman.cancel();
}
return Acks.OK;
}
public Ack cancelFragment(FragmentHandle handle){
FragmentExecutor runner = bee.getFragmentRunner(handle);
if(runner != null) runner.cancel();
return Acks.OK;
}
public SchemaFactory getSchemaFactory(){
return bee.getContext().getSchemaFactory();
}
public OptionManager getSystemOptions(){
return bee.getContext().getOptionManager();
}
}