/*
* Copyright (c) 2011. The Apache Software Foundation
*
* 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.hadoop.hbase.hbql.client;
import org.apache.hadoop.hbase.hbql.impl.QueryExecutorPoolImpl;
import org.apache.hadoop.hbase.hbql.impl.Utils;
import org.apache.hadoop.hbase.hbql.util.Maps;
import java.util.Map;
import java.util.Set;
public class QueryExecutorPoolManager {
public static int defaultMaxExecutorPoolSize = 5;
public static int defaultMinThreadCount = 1;
public static int defaultMaxThreadCount = 10;
public static long defaultKeepAliveSecs = Long.MAX_VALUE;
public static boolean defaultThreadsReadResults = true;
public static int defaultCompletionQueueSize = 25;
private static Map<String, QueryExecutorPoolImpl> executorPoolMap = Maps.newConcurrentHashMap();
private static Map<String, QueryExecutorPoolImpl> getExecutorPoolMap() {
return QueryExecutorPoolManager.executorPoolMap;
}
public static QueryExecutorPool newQueryExecutorPool(final String poolName,
final int maxExecutorPoolSize,
final int minThreadCount,
final int maxThreadCount,
final long keepAliveSecs,
final boolean threadsReadResults,
final int completionQueueSize) throws HBqlException {
if (Utils.isValidString(poolName) && getExecutorPoolMap().containsKey(poolName))
throw new HBqlException("QueryExecutorPool already exists: " + poolName);
final QueryExecutorPoolImpl executorPool = new QueryExecutorPoolImpl(poolName,
maxExecutorPoolSize,
minThreadCount,
maxThreadCount,
keepAliveSecs,
threadsReadResults,
completionQueueSize);
QueryExecutorPoolManager.getExecutorPoolMap().put(executorPool.getName(), executorPool);
return executorPool;
}
public static boolean dropQueryExecutorPool(final String name) {
if (Utils.isValidString(name) && getExecutorPoolMap().containsKey(name)) {
final QueryExecutorPoolImpl queryExecutorPool = getExecutorPoolMap().remove(name);
queryExecutorPool.shutdown();
return true;
}
return false;
}
public static boolean queryExecutorPoolExists(final String name) {
return Utils.isValidString(name) && QueryExecutorPoolManager.getExecutorPoolMap().containsKey(name);
}
public static QueryExecutorPool getQueryExecutorPool(final String poolName) throws HBqlException {
if (!QueryExecutorPoolManager.getExecutorPoolMap().containsKey(poolName))
throw new HBqlException("QueryExecutorPool does not exist: " + poolName);
return QueryExecutorPoolManager.getExecutorPoolMap().get(poolName);
}
public static Set<String> getQueryExecutorPoolNames() {
return QueryExecutorPoolManager.getExecutorPoolMap().keySet();
}
}