[jira] [Commented] (NIFI-4621) Allow inputs to ListSFTP

["scott wilburn (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/NIFI-4621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16429928#comment-16429928 ] 

scott wilburn commented on NIFI-4621:
-------------------------------------

I have also wanted to see this feature for ListSFTP and other List processors that do not allow an incoming relationship. In my case, I would like to use an external table to configure NiFi connections. To accomplish this, I would first read in my configuration, then create flowfiles for each connection that contains the configuration parameters as attributes. It doesn't work for SFTP unless it can read attributes from an incoming flowfile to use as configuration parameters, such as username, directory, etc. I had a conversation with devs in the dev email distro. The recommendation was to create a new processor which does not keep state. The incoming flowfile would trigger the list, which would then generate zero or more output flowfiles, one for each remote file matching. You should be able to follow the email chain discussion I had in the dev email archive for subject "ListSFTP incoming relationship". I was thinking about building a custom processor to do this also before I read your jira.

 

> Allow inputs to ListSFTP
> ------------------------
>
>                 Key: NIFI-4621
>                 URL: https://issues.apache.org/jira/browse/NIFI-4621
>             Project: Apache NiFi
>          Issue Type: Improvement
>    Affects Versions: 1.4.0
>            Reporter: Soumya Shanta Ghosh
>            Assignee: Puspendu Banerjee
>            Priority: Critical
>
> ListSFTP supports listing of the supplied directory (Remote Path) out-of-the-box on the supplied "Hostname" using the 'Username" and 'Password" / "Private Key Passphrase". 
> The password can change at a regular interval (depending on organization policy) or the Hostname or the Remote Path can change based on some other requirement.
> This is a case to allow ListSFTP to leverage the use of Nifi Expression language so that the values of Hostname, Password and/or Remote Path can be set based on the attributes of an incoming flow file.



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