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java.lang.Object org.apache.camel.support.ServiceSupport org.apache.camel.impl.PollingConsumerSupport org.apache.camel.impl.EventDrivenPollingConsumer
public class EventDrivenPollingConsumer
A default implementation of the PollingConsumer
which uses the normal
asynchronous consumer mechanism along with a BlockingQueue
to allow
the caller to pull messages on demand.
Field Summary |
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Fields inherited from class org.apache.camel.impl.PollingConsumerSupport |
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log |
Fields inherited from class org.apache.camel.support.ServiceSupport |
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shutdown, shuttingdown, started, starting, stopped, stopping, suspended, suspending |
Constructor Summary | |
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EventDrivenPollingConsumer(Endpoint endpoint)
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EventDrivenPollingConsumer(Endpoint endpoint,
BlockingQueue<Exchange> queue)
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Method Summary | |
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protected void |
afterPoll()
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protected long |
beforePoll(long timeout)
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protected void |
doShutdown()
Implementations override this method to perform customized shutdown. |
protected void |
doStart()
Implementations override this method to support customized start/stop. |
protected void |
doStop()
Implementations override this method to support customized start/stop. |
ExceptionHandler |
getInterruptedExceptionHandler()
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protected void |
handleInterruptedException(InterruptedException e)
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void |
process(Exchange exchange)
Processes the message exchange |
Exchange |
receive()
Waits until a message is available and then returns it. |
Exchange |
receive(long timeout)
Attempts to receive a message exchange, waiting up to the given timeout to expire if a message is not yet available. |
Exchange |
receiveNoWait()
Attempts to receive a message exchange immediately without waiting and returning null if a message exchange is not available yet. |
void |
setInterruptedExceptionHandler(ExceptionHandler interruptedExceptionHandler)
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Methods inherited from class org.apache.camel.impl.PollingConsumerSupport |
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getEndpoint, getExceptionHandler, handleException, setExceptionHandler, toString |
Methods inherited from class org.apache.camel.support.ServiceSupport |
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doResume, doSuspend, getStatus, getVersion, isRunAllowed, isStarted, isStarting, isStopped, isStopping, isSuspended, isSuspending, resume, shutdown, start, stop, suspend |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface org.apache.camel.Service |
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start, stop |
Constructor Detail |
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public EventDrivenPollingConsumer(Endpoint endpoint)
public EventDrivenPollingConsumer(Endpoint endpoint, BlockingQueue<Exchange> queue)
Method Detail |
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public Exchange receiveNoWait()
PollingConsumer
UnitOfWork
on the returned Exchange
receiveNoWait
in interface PollingConsumer
public Exchange receive()
PollingConsumer
UnitOfWork
on the returned Exchange
receive
in interface PollingConsumer
public Exchange receive(long timeout)
PollingConsumer
UnitOfWork
on the returned Exchange
receive
in interface PollingConsumer
timeout
- the amount of time in milliseconds to wait for a message
before timing out and returning null
public void process(Exchange exchange) throws Exception
Processor
process
in interface Processor
exchange
- the message exchange
Exception
- if an internal processing error has occurred.public ExceptionHandler getInterruptedExceptionHandler()
public void setInterruptedExceptionHandler(ExceptionHandler interruptedExceptionHandler)
protected void handleInterruptedException(InterruptedException e)
protected long beforePoll(long timeout)
protected void afterPoll()
protected void doStart() throws Exception
ServiceSupport
ServiceSupport.doStop()
for more details.
doStart
in class ServiceSupport
Exception
ServiceSupport.doStop()
protected void doStop() throws Exception
ServiceSupport
ServiceSupport.doStop()
method when
the service is being stopped. This method will also be invoked
if the service is still in uninitialized state (eg has not
been started). The method is always called to allow the service
to do custom logic when the service is being stopped, such as when
CamelContext
is shutting down.
doStop
in class ServiceSupport
Exception
ServiceSupport.doStart()
protected void doShutdown() throws Exception
ServiceSupport
doShutdown
in class ServiceSupport
Exception
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