com.baidu.jprotobuf.pbrpc.utils.Pool.java Source code

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/*
 * Copyright 2002-2007 the original author or authors.
 *
 * 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.baidu.jprotobuf.pbrpc.utils;

import org.apache.commons.pool2.PooledObjectFactory;
import org.apache.commons.pool2.impl.GenericObjectPool;
import org.apache.commons.pool2.impl.GenericObjectPoolConfig;

/**
 * Base pool class .
 *
 * @author xiemalin
 * @param <T> the generic type
 * @since 2.27
 */
public abstract class Pool<T> {

    /** The internal pool. */
    private final GenericObjectPool<T> internalPool;

    /**
     * Instantiates a new pool.
     *
     * @param poolConfig the pool config
     * @param factory the factory
     */
    public Pool(final GenericObjectPoolConfig poolConfig, PooledObjectFactory<T> factory) {
        this.internalPool = new GenericObjectPool<T>(factory, poolConfig);
    }

    /**
     * Gets the resource.
     *
     * @return the resource
     */
    @SuppressWarnings("unchecked")
    public T getResource() {
        try {
            return (T) internalPool.borrowObject();
        } catch (Exception e) {
            throw new RuntimeException("Could not get a resource from the pool", e);
        }
    }

    /**
     * Return resource.
     *
     * @param resource the resource
     */
    public void returnResource(final T resource) {
        try {
            internalPool.returnObject(resource);
        } catch (Exception e) {
            throw new RuntimeException("Could not return the resource to the pool", e);
        }
    }

    /**
     * Return broken resource.
     *
     * @param resource the resource
     */
    public void returnBrokenResource(final T resource) {
        try {
            internalPool.invalidateObject(resource);
        } catch (Exception e) {
            throw new RuntimeException("Could not return the resource to the pool", e);
        }
    }

    /**
     * Destroy.
     */
    public void destroy() {
        try {
            internalPool.close();
        } catch (Exception e) {
            throw new RuntimeException("Could not destroy the pool", e);
        }
    }
}