UDM Monitor

This service:

• allows a data loader to register with it (DONE)
• presents a dashboard (TO DO)
• allows jobs to be re-run earlier than scheduled (TO DO)

Warning - Client loader hasn't run in more than 24 hours (select max(startTime) from LoaderSnapshots where exitcode=<3). Warning - Client loader hasn't run and it is the 1st of the month

Exit Codes - 0, ran fine no errors, all rows loaded (Only sent at end of run)

            - 1, loader exited with a caught exception at some point during execution (Sent on any caught exception)
            - 2, loader ran to completion but received errors from the services while executing (Sent at end of run, checking for status of the failures)
            - 3, loader tried to run but had no files to execute with (Sent at branch of file load). 
            - 4, partial fail on ingestion, but load continued. 

We want to know

- Is the loader continuing to run on its schedule (Has the loader run in X minutes) - two phase register.
- Did the loader register a failure at the end of its run? 
- Did the loader fail abruptly (i.e. did it register an exception)
- What failures did the lodaer register?

• loader will run every so often. Would be good to know a heartbeat (has the loader stopped running for whatever)