| /* |
| * 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.ranger.common; |
| |
| import java.util.concurrent.TimeUnit; |
| |
| import javax.annotation.PostConstruct; |
| |
| import org.springframework.context.annotation.Scope; |
| import org.springframework.stereotype.Service; |
| |
| @Service |
| @Scope("singleton") |
| public class TimedExecutorConfigurator { |
| |
| // these two are important and hence are user configurable. |
| static final String Property_MaxThreadPoolSize = "ranger.timed.executor.max.threadpool.size"; |
| static final String Property_QueueSize = "ranger.timed.executor.queue.size"; |
| // We need these default-defaults since default-site.xml file isn't inside the jar, i.e. file itself may be missing or values in it might be messed up! :( |
| static final int _DefaultMaxThreadPoolSize = 10; |
| static final private int _DefaultBlockingQueueSize = 100; |
| |
| |
| private int _maxThreadPoolSize; |
| private int _blockingQueueSize; |
| // The following are hard-coded for now and can be exposed if there is a pressing need. |
| private int _coreThreadPoolSize = 1; |
| private long _keepAliveTime = 10; |
| private TimeUnit _keepAliveTimeUnit = TimeUnit.SECONDS; |
| |
| public TimedExecutorConfigurator() { |
| } |
| |
| // Infrequently used class (once per lifetime of policy manager) hence, values read from property file aren't cached. |
| @PostConstruct |
| void initialize() { |
| Integer value = PropertiesUtil.getIntProperty(Property_MaxThreadPoolSize); |
| if (value == null) { |
| _maxThreadPoolSize = _DefaultMaxThreadPoolSize; |
| } else { |
| _maxThreadPoolSize = value; |
| } |
| |
| value = PropertiesUtil.getIntProperty(Property_QueueSize); |
| if (value == null) { |
| _blockingQueueSize = _DefaultBlockingQueueSize; |
| } else { |
| _blockingQueueSize = value; |
| } |
| } |
| /** |
| * Provided mostly only testability. |
| * @param maxThreadPoolSize |
| * @param blockingQueueSize |
| */ |
| public TimedExecutorConfigurator(int maxThreadPoolSize, int blockingQueueSize) { |
| _maxThreadPoolSize = maxThreadPoolSize; |
| _blockingQueueSize = blockingQueueSize; |
| } |
| |
| public int getCoreThreadPoolSize() { |
| return _coreThreadPoolSize; |
| } |
| public int getMaxThreadPoolSize() { |
| return _maxThreadPoolSize; |
| } |
| public long getKeepAliveTime() { |
| return _keepAliveTime; |
| } |
| public TimeUnit getKeepAliveTimeUnit() { |
| return _keepAliveTimeUnit; |
| } |
| public int getBlockingQueueSize() { |
| return _blockingQueueSize; |
| } |
| } |