Hi! I am trying to implement a filter inside zeppelin in order to intercept the petitions and collect metrics about zeppelin performance. I registered the javax servlet filter in the zeppelin-web/src/WEB-INF/web.xml, and the filter works well for the REST request; but it does not intercept the Websocket communication (which is the way zeppelin ui interact with zeppelin server in notebook related stuffs).
Do you know a way to configure a javax servlet filter to intercept websocket communication without modify NotebookServer class?. Thank you!
