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package org.apache.camel.component.pojo.timer; |
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import java.lang.reflect.InvocationHandler; |
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import java.lang.reflect.InvocationTargetException; |
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import java.lang.reflect.Method; |
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import java.lang.reflect.Proxy; |
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import java.util.Timer; |
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import java.util.TimerTask; |
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import org.apache.camel.Processor; |
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import org.apache.camel.component.pojo.PojoExchange; |
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import org.apache.camel.component.pojo.PojoInvocation; |
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import org.apache.camel.impl.DefaultConsumer; |
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public class TimerConsumer extends DefaultConsumer<PojoExchange> implements InvocationHandler { |
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private final TimerEndpoint endpoint; |
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private Timer timer; |
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public TimerConsumer(TimerEndpoint endpoint, Processor processor) { |
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super(endpoint, processor); |
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this.endpoint = endpoint; |
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} |
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@Override |
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protected void doStart() throws Exception { |
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TimerComponent component = endpoint.getComponent(); |
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component.addConsumer(this); |
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timer=createTimerAndTask(); |
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} |
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@Override |
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protected void doStop() throws Exception { |
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if(timer!=null){ |
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timer.cancel(); |
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} |
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TimerComponent component = endpoint.getComponent(); |
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component.removeConsumer(this); |
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} |
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private Timer createTimerAndTask(){ |
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final Runnable proxy = createProxy(); |
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TimerTask task=new TimerTask(){ |
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@Override public void run(){ |
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proxy.run(); |
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} |
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}; |
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Timer result=new Timer(endpoint.getTimerName(),endpoint.isDaemon()); |
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if(endpoint.isFixedRate()){ |
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if(endpoint.getTime()!=null){ |
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result.scheduleAtFixedRate(task,endpoint.getTime(),endpoint.getPeriod()); |
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}else{ |
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result.scheduleAtFixedRate(task,endpoint.getDelay(),endpoint.getPeriod()); |
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} |
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}else{ |
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if(endpoint.getTime()!=null){ |
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if(endpoint.getPeriod()>=0){ |
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result.schedule(task,endpoint.getTime(),endpoint.getPeriod()); |
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}else{ |
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result.schedule(task,endpoint.getTime()); |
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} |
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}else{ |
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if(endpoint.getPeriod()>=0){ |
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result.schedule(task,endpoint.getDelay(),endpoint.getPeriod()); |
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}else{ |
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result.schedule(task,endpoint.getDelay()); |
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} |
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} |
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} |
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return result; |
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} |
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public Runnable createProxy() { |
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return (Runnable) Proxy.newProxyInstance(Runnable.class.getClassLoader(), new Class[]{Runnable.class}, this); |
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} |
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public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { |
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if (!isStarted()) { |
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throw new IllegalStateException("The endpoint is not active: " + getEndpoint().getEndpointUri()); |
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} |
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PojoInvocation invocation = new PojoInvocation(proxy, method, args); |
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PojoExchange exchange = getEndpoint().createExchange(); |
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exchange.setInvocation(invocation); |
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getProcessor().process(exchange); |
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Throwable fault = exchange.getException(); |
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if (fault != null) { |
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throw new InvocationTargetException(fault); |
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} |
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return exchange.getOut().getBody(); |
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} |
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} |