Examples with EventBuilderConfigurer org.mule.runtime.core.internal.routing.outbound.EventBuilderConfigurer used on opensource projects

Example 1 with EventBuilderConfigurer

use of org.mule.runtime.core.internal.routing.outbound.EventBuilderConfigurer in project mule by mulesoft.

the class Foreach method splitAndProcess.

private Publisher<CoreEvent> splitAndProcess(CoreEvent request) {
    AtomicInteger count = new AtomicInteger();
    final AtomicReference<CoreEvent> currentEvent = new AtomicReference<>(request);
    // Split into sequence of TypedValue
    return fromIterable(() -> splitRequest(request)).onErrorMap(throwable -> new MessagingException(request, throwable, Foreach.this)).transform(p -> batchSize > 1 ? from(p).buffer(batchSize).map(list -> new TypedValue<>(list, fromObject(list))) : p).flatMapSequential(typedValue -> {
        EventContext parentContext = currentEvent.get().getContext();
        BaseEventContext childContext = newChildContext(currentEvent.get(), ofNullable(getLocation()));
        Builder partEventBuilder = builder(childContext, currentEvent.get());
        if (typedValue.getValue() instanceof EventBuilderConfigurer) {
            // Support EventBuilderConfigurer currently used by Batch Module
            EventBuilderConfigurer configurer = (EventBuilderConfigurer) typedValue.getValue();
            configurer.configure(partEventBuilder);
            childContext.onResponse((e, t) -> {
                configurer.eventCompleted();
            });
        } else if (typedValue.getValue() instanceof Message) {
            // If value is a Message then use it directly conserving attributes and properties.
            partEventBuilder.message((Message) typedValue.getValue());
        } else {
            // Otherwise create a new message
            partEventBuilder.message(Message.builder().payload(typedValue).build());
        }
        return Mono.from(just(partEventBuilder.addVariable(counterVariableName, count.incrementAndGet()).build()).transform(nestedChain).doOnNext(completeSuccessIfNeeded(childContext, true)).switchIfEmpty(Mono.from(childContext.getResponsePublisher())).map(result -> builder(parentContext, result).build()).doOnNext(result -> currentEvent.set(CoreEvent.builder(result).build())).doOnError(MessagingException.class, me -> me.setProcessedEvent(builder(parentContext, me.getEvent()).build())).doOnSuccess(result -> {
            if (result == null) {
                childContext.success();
            }
        }));
    }, // Force sequential execution of the chain for each element
    1).switchIfEmpty(defer(() -> {
        if (count.get() == 0) {
            logger.warn("Split expression returned no results. If this is not expected please check your expression");
            return just(request);
        } else {
            return empty();
        }
    })).takeLast(1).map(s -> CoreEvent.builder(currentEvent.get()).message(request.getMessage()).build()).errorStrategyStop();
}