at.molindo.notify.util.AbstractSmartLifecycle.java Source code

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Here is the source code for at.molindo.notify.util.AbstractSmartLifecycle.java

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/**
 * Copyright 2010 Molindo GmbH
 *
 * 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 at.molindo.notify.util;

import org.springframework.context.SmartLifecycle;

public abstract class AbstractSmartLifecycle implements SmartLifecycle {

    private final Object _monitor = new Object();

    @Override
    public final void start() {
        synchronized (_monitor) {
            if (!isRunning()) {
                doStart();
            }
        }

    }

    @Override
    public final void stop() {
        synchronized (_monitor) {
            if (isRunning()) {
                doStop();
            }
        }
    }

    @Override
    public final void stop(final Runnable callback) {
        stop();
        callback.run();
    }

    @Override
    public int getPhase() {
        return Integer.MAX_VALUE; // at the very end
    }

    @Override
    public boolean isAutoStartup() {
        return true;
    }

    @Override
    public abstract boolean isRunning();

    protected abstract void doStart();

    protected abstract void doStop();
}