protected Processor createErrorHandler(
RouteContext routeContext, Exchange exchange, Processor processor) {
Processor answer;
boolean tryBlock = exchange.getProperty(Exchange.TRY_ROUTE_BLOCK, false, boolean.class);
// do not wrap in error handler if we are inside a try block
if (!tryBlock && routeContext != null) {
// wrap the producer in error handler so we have fine grained error handling on
// the output side instead of the input side
// this is needed to support redelivery on that output alone and not doing redelivery
// for the entire multicast block again which will start from scratch again
// create key for cache
final PreparedErrorHandler key = new PreparedErrorHandler(routeContext, processor);
// lookup cached first to reuse and preserve memory
answer = errorHandlers.get(key);
if (answer != null) {
LOG.trace("Using existing error handler for: {}", processor);
return answer;
}
LOG.trace("Creating error handler for: {}", processor);
ErrorHandlerFactory builder = routeContext.getRoute().getErrorHandlerBuilder();
// create error handler (create error handler directly to keep it light weight,
// instead of using ProcessorDefinition.wrapInErrorHandler)
try {
processor = builder.createErrorHandler(routeContext, processor);
// and wrap in unit of work processor so the copy exchange also can run under UoW
answer = createUnitOfWorkProcessor(routeContext, processor, exchange);
boolean child =
exchange.getProperty(Exchange.PARENT_UNIT_OF_WORK, UnitOfWork.class) != null;
// must start the error handler
ServiceHelper.startServices(answer);
// here we don't cache the child unit of work
if (!child) {
// add to cache
errorHandlers.putIfAbsent(key, answer);
}
} catch (Exception e) {
throw ObjectHelper.wrapRuntimeCamelException(e);
}
} else {
// and wrap in unit of work processor so the copy exchange also can run under UoW
answer = createUnitOfWorkProcessor(routeContext, processor, exchange);
}
return answer;
}
@Override
protected void doStart() throws Exception {
ServiceHelper.startServices(output, outputAsync, deadLetter);
// use a shared scheduler
if (executorService == null || executorService.isShutdown()) {
// camel context will shutdown the executor when it shutdown so no need to shut it down when
// stopping
if (executorServiceRef != null) {
executorService =
camelContext
.getExecutorServiceStrategy()
.lookupScheduled(this, "ErrorHandlerRedeliveryTask", executorServiceRef);
if (executorService == null) {
throw new IllegalArgumentException(
"ExecutorServiceRef " + executorServiceRef + " not found in registry.");
}
} else {
executorService =
camelContext
.getExecutorServiceStrategy()
.newScheduledThreadPool(this, "ErrorHandlerRedeliveryTask");
}
}
// determine if redeliver is enabled or not
redeliveryEnabled = determineIfRedeliveryIsEnabled();
if (log.isDebugEnabled()) {
log.debug("Redelivery enabled: {} on error handler: {}", redeliveryEnabled, this);
}
}
@Override
@Before
protected void setUp() throws Exception {
super.setUp();
context2 = new DefaultCamelContext();
template2 = context2.createProducerTemplate();
ServiceHelper.startServices(template2, context2);
// add routes after CamelContext has been started
RouteBuilder routeBuilder = createRouteBuilderForSecondContext();
if (routeBuilder != null) {
context2.addRoutes(routeBuilder);
}
}
protected void doStart() throws Exception {
if (consumerCache == null) {
// create consumer cache if we use dynamic expressions for computing the endpoints to poll
if (cacheSize < 0) {
consumerCache = new EmptyConsumerCache(this, camelContext);
LOG.debug("PollEnrich {} is not using ConsumerCache", this);
} else if (cacheSize == 0) {
consumerCache = new ConsumerCache(this, camelContext);
LOG.debug("PollEnrich {} using ConsumerCache with default cache size", this);
} else {
consumerCache = new ConsumerCache(this, camelContext, cacheSize);
LOG.debug("PollEnrich {} using ConsumerCache with cacheSize={}", this, cacheSize);
}
}
ServiceHelper.startServices(consumerCache, aggregationStrategy);
}
@Override
protected void doStart() throws Exception {
// inject CamelContext before starting
if (jsonMarshal instanceof CamelContextAware) {
((CamelContextAware) jsonMarshal).setCamelContext(camelContext);
}
if (jsonUnmarshal instanceof CamelContextAware) {
((CamelContextAware) jsonUnmarshal).setCamelContext(camelContext);
}
if (xmlMarshal instanceof CamelContextAware) {
((CamelContextAware) xmlMarshal).setCamelContext(camelContext);
}
if (xmlUnmarshal instanceof CamelContextAware) {
((CamelContextAware) xmlUnmarshal).setCamelContext(camelContext);
}
ServiceHelper.startServices(jsonMarshal, jsonUnmarshal, xmlMarshal, xmlUnmarshal);
}
protected void setUp(String endpointUri) throws Exception {
template = camelContext.createProducerTemplate();
startServices(template, camelContext);
endpoint = camelContext.getEndpoint(endpointUri, JpaEndpoint.class);
transactionStrategy = endpoint.createTransactionStrategy();
jpaTemplate = endpoint.getTemplate();
transactionStrategy.execute(
new JpaCallback() {
public Object doInJpa(EntityManager entityManager) throws PersistenceException {
entityManager.createQuery("delete from " + Customer.class.getName()).executeUpdate();
return null;
}
});
assertEntitiesInDatabase(0, Customer.class.getName());
assertEntitiesInDatabase(0, Address.class.getName());
}
protected void doStart() throws Exception {
if (isParallelProcessing() && executorService == null) {
throw new IllegalArgumentException(
"ParallelProcessing is enabled but ExecutorService has not been set");
}
if (timeout > 0 && !isParallelProcessing()) {
throw new IllegalArgumentException(
"Timeout is used but ParallelProcessing has not been enabled");
}
if (isParallelProcessing() && aggregateExecutorService == null) {
// use unbounded thread pool so we ensure the aggregate on-the-fly task always will have
// assigned a thread
// and run the tasks when the task is submitted. If not then the aggregate task may not be
// able to run
// and signal completion during processing, which would lead to what would appear as a
// dead-lock or a slow processing
String name = getClass().getSimpleName() + "-AggregateTask";
aggregateExecutorService = createAggregateExecutorService(name);
}
ServiceHelper.startServices(aggregationStrategy, processors);
}
protected void doStart() throws Exception {
ServiceHelper.startServices(aggregationStrategy, consumer);
}
protected void doStart() throws Exception {
log.debug("Starting consumer: {}", this);
ServiceHelper.startServices(processor);
}
@Override
protected void doStart() throws Exception {
ServiceHelper.startServices(target, interceptor);
}