ConcurrencyStrategyDispatcher.java

/*
 * Copyright 2014 Avanza Bank AB
 *
 * Licensed 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 com.avanza.astrix.ft.hystrix;

import java.util.concurrent.BlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

import com.netflix.hystrix.HystrixThreadPoolKey;
import com.netflix.hystrix.strategy.concurrency.HystrixConcurrencyStrategy;
import com.netflix.hystrix.strategy.concurrency.HystrixRequestVariable;
import com.netflix.hystrix.strategy.concurrency.HystrixRequestVariableLifecycle;
import com.netflix.hystrix.strategy.properties.HystrixProperty;

final class ConcurrencyStrategyDispatcher extends HystrixConcurrencyStrategy {
	
	private final HystrixStrategyMapping hystrixStrategyMapping;
	
	public ConcurrencyStrategyDispatcher(HystrixStrategyMapping hystrixStrategyMapping) {
		this.hystrixStrategyMapping = hystrixStrategyMapping;
	}

	@Override
	public ThreadPoolExecutor getThreadPool(HystrixThreadPoolKey threadPoolKey, HystrixProperty<Integer> corePoolSize,
			HystrixProperty<Integer> maximumPoolSize, HystrixProperty<Integer> keepAliveTime, TimeUnit unit,
			BlockingQueue<Runnable> workQueue) {
		return hystrixStrategyMapping.getHystrixStrategies(threadPoolKey)
									 .getHystrixConcurrencyStrategy()
									 .getThreadPool(threadPoolKey, corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue);
	}
	
	@Override
	public <T> HystrixRequestVariable<T> getRequestVariable(HystrixRequestVariableLifecycle<T> rv) {
		return HystrixStrategyMapping.getDefault().getHystrixConcurrencyStrategy().getRequestVariable(rv);
	}
	
	@Override
	public BlockingQueue<Runnable> getBlockingQueue(int maxQueueSize) {
		return HystrixStrategyMapping.getDefault().getHystrixConcurrencyStrategy().getBlockingQueue(maxQueueSize);
	}

}