/*
* 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.AsyncExecutorImpl;
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 AsyncExecutorManager {
public static int defaultMinThreadCount = 1;
public static int defaultMaxThreadCount = 10;
public static long defaultKeepAliveSecs = Long.MAX_VALUE;
private static Map<String, AsyncExecutorImpl> executorMap = Maps.newConcurrentHashMap();
private static Map<String, AsyncExecutorImpl> getExecutorMap() {
return AsyncExecutorManager.executorMap;
}
public static AsyncExecutor newAsyncExecutor(final String name,
final int minThreadCount,
final int maxThreadCount,
final long keepAliveSecs) throws HBqlException {
if (Utils.isValidString(name) && getExecutorMap().containsKey(name))
throw new HBqlException("AsyncExecutor already exists: " + name);
final AsyncExecutorImpl asyncExecutor = new AsyncExecutorImpl(name,
minThreadCount,
maxThreadCount,
keepAliveSecs);
AsyncExecutorManager.getExecutorMap().put(asyncExecutor.getName(), asyncExecutor);
return asyncExecutor;
}
public static boolean dropAsyncExecutor(final String name) {
if (Utils.isValidString(name) && getExecutorMap().containsKey(name)) {
final AsyncExecutorImpl asyncExecutor = getExecutorMap().remove(name);
asyncExecutor.shutdown();
return true;
}
return false;
}
public static boolean asyncExecutorExists(final String name) {
return Utils.isValidString(name) && AsyncExecutorManager.getExecutorMap().containsKey(name);
}
public static AsyncExecutor getAsyncExecutor(final String name) throws HBqlException {
if (!AsyncExecutorManager.getExecutorMap().containsKey(name))
throw new HBqlException("AsyncExecutor does not exist: " + name);
return AsyncExecutorManager.getExecutorMap().get(name);
}
public static Set<String> getAsyncExecutorNames() {
return AsyncExecutorManager.getExecutorMap().keySet();
}
}