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From olegz <...@git.apache.org>
Subject [GitHub] nifi pull request #1022: NIFI-2774 changed the default ACK mode to CLIENT
Date Thu, 15 Sep 2016 17:14:58 GMT
Github user olegz commented on a diff in the pull request:

    https://github.com/apache/nifi/pull/1022#discussion_r79015458
  
    --- Diff: nifi-nar-bundles/nifi-jms-bundle/nifi-jms-processors/src/main/java/org/apache/nifi/jms/processors/ConsumeJMS.java
---
    @@ -78,22 +77,24 @@
          */
         @Override
         protected void rendezvousWithJms(ProcessContext context, ProcessSession processSession)
throws ProcessException {
    -        final JMSResponse response = this.targetResource.consume();
    -        if (response != null){
    -            FlowFile flowFile = processSession.create();
    -            flowFile = processSession.write(flowFile, new OutputStreamCallback() {
    -                @Override
    -                public void process(final OutputStream out) throws IOException {
    -                    out.write(response.getMessageBody());
    -                }
    -            });
    -            Map<String, Object> jmsHeaders = response.getMessageHeaders();
    -            flowFile = this.updateFlowFileAttributesWithJmsHeaders(jmsHeaders, flowFile,
processSession);
    -            processSession.getProvenanceReporter().receive(flowFile, context.getProperty(DESTINATION).evaluateAttributeExpressions().getValue());
    -            processSession.transfer(flowFile, REL_SUCCESS);
    -        } else {
    -            context.yield();
    -        }
    +        this.targetResource.consume(response -> {
    +            if (response != null) {
    +                FlowFile flowFile = processSession.create();
    +                flowFile = processSession.write(flowFile, new OutputStreamCallback()
{
    +                    @Override
    +                    public void process(final OutputStream out) throws IOException {
    +                        out.write(response.getMessageBody());
    +                    }
    +                });
    +                Map<String, Object> jmsHeaders = response.getMessageHeaders();
    +                flowFile = this.updateFlowFileAttributesWithJmsHeaders(jmsHeaders, flowFile,
processSession);
    +                processSession.getProvenanceReporter().receive(flowFile,
    +                        context.getProperty(DESTINATION).evaluateAttributeExpressions().getValue());
    +                processSession.transfer(flowFile, REL_SUCCESS);
    --- End diff --
    
    @ckmcd good catch. Indeed that window exists and we need to commit session within the
callback and before message ack. Will address.


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