The phases to which filters can be applied are
- NONE: The filter will never be executed
- PRE_RENDER
- API: Here are all the API calls, all calls are blocking
- STATIC: Here the static pages are rendered, all calls are blocking
- Rewrite translation see the proxy
- PRE_CALL: Before the call to the external sites
- Call external site. If nothing happened before the call is forwarded to the external site
- POST_CALL: With the response from external site
- Return data to the caller
- POST_RENDER: With all request response