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package org.apache.camel.impl; |
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import org.apache.camel.Service; |
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import org.apache.camel.util.ServiceHelper; |
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import java.util.ArrayList; |
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import java.util.Collection; |
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import java.util.concurrent.atomic.AtomicBoolean; |
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import org.springframework.jmx.export.annotation.ManagedAttribute; |
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import org.springframework.jmx.export.annotation.ManagedOperation; |
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import org.springframework.jmx.export.annotation.ManagedResource; |
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public abstract class ServiceSupport implements Service { |
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private static int threadCounter; |
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private AtomicBoolean started = new AtomicBoolean(false); |
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private AtomicBoolean stopping = new AtomicBoolean(false); |
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private AtomicBoolean stopped = new AtomicBoolean(false); |
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private Collection childServices; |
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public void start() throws Exception { |
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if (started.compareAndSet(false, true)) { |
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if (childServices != null) { |
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ServiceHelper.startServices(childServices); |
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} |
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doStart(); |
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} |
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} |
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public void stop() throws Exception { |
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if (started.get() && stopping.compareAndSet(false, true)) { |
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try { |
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doStop(); |
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} |
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finally { |
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if (childServices != null) { |
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ServiceHelper.stopServices(childServices); |
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} |
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stopped.set(true); |
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started.set(false); |
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stopping.set(false); |
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} |
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} |
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} |
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public boolean isStarted() { |
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return started.get(); |
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} |
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public boolean isStopping() { |
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return stopping.get(); |
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} |
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public boolean isStopped() { |
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return stopped.get(); |
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} |
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protected abstract void doStart() throws Exception; |
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protected abstract void doStop() throws Exception; |
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protected String getThreadName(String prefix) { |
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return prefix + " thread:" + nextThreadCounter(); |
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} |
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protected static synchronized int nextThreadCounter() { |
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return ++threadCounter; |
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} |
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protected void addChildService(Object childService) { |
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if (childServices == null) { |
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childServices = new ArrayList(); |
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} |
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childServices.add(childService); |
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} |
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protected boolean removeChildService(Object childService) { |
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if (childServices != null) { |
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return childServices.remove(childService); |
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} |
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else { |
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return false; |
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} |
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} |
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} |