[jira] Commented: (CAMEL-3397) Support in-only semantic for file and ftp component

["Claus Ibsen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CAMEL-3397?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12969265#action_12969265 ] 

Claus Ibsen commented on CAMEL-3397:
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To leverage all the existing functionally on the consumer side, eg. what should happen with the file after the exchange has been processed? should it be deleted, moved, etc.

Then it would most likely to leverage a PollingConsumer for the GET command and retrieve the file that way. That will use the consumer under the hood.
Then you just check if the Exchange returned is null or not. If null then no filed existed.

And you will then have to transfer the synchronization from the returned Exchange to the existing Exchange, as it contains the on completion logic.
See the PollEnrich EIP pattern for similar details.

> Support in-only semantic for file and ftp component
> ---------------------------------------------------
>
>                 Key: CAMEL-3397
>                 URL: https://issues.apache.org/jira/browse/CAMEL-3397
>             Project: Camel
>          Issue Type: Improvement
>          Components: camel-core
>    Affects Versions: 2.5.0
>            Reporter: Hadrian Zbarcea
>            Assignee: Hadrian Zbarcea
>             Fix For: 2.6.0
>
>
> Currently we only support in-only for file: and ftp: endpoints, in the sense that the content of the message is written to a file and no output gets produced.
> It would be useful to support a scenario in which one could send an empty message to a file with a GET operation such that the content of the file is retrieved as an out instead of written to the file.

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