I'm trying to figure out how to use the ReST (nifi-api) interface to
accomplish a number of things. First, I've played successfully with it
doing simple things like getting configuration, a list of existing
processors, and the like. I've even discovered that in
controller/history/processors/{processorId} I can use the processor name
for {processorId} instead of an intangible or impossible number.
What puzzles me is that I need a {process-group-id} to do so many things.
I'm not using a process group, my flow is very simple for now. Maybe, think
I, I have one process group and I just need its id, but how do I get that?
I see no list API for it.
The long list of things I'm hoping to do down the road from a UI is to be
able to see things like:
1. How many times a processor processed anything?
2. How many flowfiles were processed?
3. How many flowfiles were produced?
4. Can I get this information per processor?
5. How can I tell different instances of the same processor apart?
6. Why can't I see the name I gave a processor in configuration? (For
example, I named an instance of GetFile to "Get PDF files from test fodder".
7. How can I get a list of items on the NiFi canvas like processors and
relationships.
8. How many times processors or a processor failed?
9. What is the profile of resource usage, like memory in use?
10. What is the profile of processor latency?
- flowfiles backed up awaiting processing
- flowfiles in other states (?)
Any nudge on any of this would be very welcome. NiFi is new enough that
there's precious few samples of people using the ReST interface.
Thanks
