[jira] [Resolved] (NIFI-1686) NiFi is unable to populate over 1/4 of AMQP properties from flow properties

["Oleg Zhurakousky (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/NIFI-1686?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Oleg Zhurakousky resolved NIFI-1686.
------------------------------------
    Resolution: Fixed
      Assignee: Oleg Zhurakousky

[~steveyh25] [~petmit] Thank you for contribution and collaboration.
Merged

> NiFi is unable to populate over 1/4 of AMQP properties from flow properties
> ---------------------------------------------------------------------------
>
>                 Key: NIFI-1686
>                 URL: https://issues.apache.org/jira/browse/NIFI-1686
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Core Framework
>    Affects Versions: 0.5.1
>            Reporter: Stephen Harper
>            Assignee: Oleg Zhurakousky
>
> When creating a flow (we used ListenHTTP, but this bug will affect all) that forwards on to a rabbit queue, org.apache.nifi.amqp.processors.PublishAMQP uses the method extractAmqpPropertiesFromFlowFile to populate the AMQP BasicProperties if the flow attributes match a certain format (i.e amqp$contentType=text/xml). 
> The method in question uses reflection to find a matching method name from the AMQP.BasicProperties class, and tries to populate accordingly.
> This works fine for all properties that take a String argument - however there are some that don't (specifically, headers takes a Map<String, Object>, deliveryMode and priority take Integer, and timestamp takes a Date), and it is impossible to populate these values because the invocation assumes a String is required, and fails on line 210.
> Whatsmore, the comment underneath (line 215) states that "this should really never happen since it should be caught by the above IF" - however the author of the code mustn't have tested all cases because this error is consistently present when trying to forward flow attributes in over a quarter of the available amqp properties.



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