ResourceLeakDetectorFactory.java — netty Source File

Source Code

/*
 * Copyright 2016 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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 io.netty.util;

import io.netty.util.internal.ObjectUtil;
import io.netty.util.internal.PlatformDependent;
import io.netty.util.internal.SystemPropertyUtil;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;

import java.lang.reflect.Constructor;

/**
 * This static factory should be used to load {@link ResourceLeakDetector}s as needed
 */
public abstract class ResourceLeakDetectorFactory {
    private static final InternalLogger logger = InternalLoggerFactory.getInstance(ResourceLeakDetectorFactory.class);

    private static volatile ResourceLeakDetectorFactory factoryInstance = new DefaultResourceLeakDetectorFactory();

    /**
     * Get the singleton instance of this factory class.
     *
     * @return the current {@link ResourceLeakDetectorFactory}
     */
    public static ResourceLeakDetectorFactory instance() {
        return factoryInstance;
    }

    /**
     * Set the factory's singleton instance. This has to be called before the static initializer of the
     * {@link ResourceLeakDetector} is called by all the callers of this factory. That is, before initializing a
     * Netty Bootstrap.
     *
     * @param factory the instance that will become the current {@link ResourceLeakDetectorFactory}'s singleton
     */
    public static void setResourceLeakDetectorFactory(ResourceLeakDetectorFactory factory) {
        factoryInstance = ObjectUtil.checkNotNull(factory, "factory");
    }

    /**
     * Returns a new instance of a {@link ResourceLeakDetector} with the given resource class.
     *
     * @param resource the resource class used to initialize the {@link ResourceLeakDetector}
     * @param <T> the type of the resource class
     * @return a new instance of {@link ResourceLeakDetector}
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