exporting the canvas using the rest API

["Knapp, Michael" <Mi...@capitalone.com>]

Hi,

My team is developing a platform on Kubernetes that hosts NiFi instances for tenants.  We are not giving tenants direct access to the running NiFi pods (docker containers).  They will only have indirect access through NiFi’s rest API and also through one I am developing.

After a tenant creates their canvas on our platform, I want to provide some means for them to export their canvas XML, basically to let them save it as another docker image.

Unfortunately my own code is finding it impossible to use Kubernetes’s “Exec” service, I already lost a week trying that.  Without that, I cannot easily export the canvas XML (flow.xml).  The exec service would have let my own API run arbitrary commands on the pod (docker container), like cat /path/to/nifi/conf/flow.xml.gz for example.

Is there any easy way for me to get the canvas (flow.xml) from NiFi using NiFi’s rest API?  I am using NiFi 1.3.

Michael Knapp
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