Hi, I've created a CustomSink that writes parquet file to S3. Inside the
`invoke` method I have a loop to check if S3 is down, and if it is it will
wait exponentially until it is online again.
Now I want to write a test for this, and I can execute everything and see
that the Sink is doing what is suppose to do, but I can't have a way to
validate that is doing that programmatically (in a integration test).
One of the possibilities I was thinking was check the LazyLogger errors, to
verify that something was printed, but I can't mock Logger, since it is
final. Since I expose the number of errors as a counter, I was trying to
find a way to access it directly with Scala, but the only way I could find
was via Rest API, and that is kind of a hack.
Exemple:
- Get the Rest API port
with flinkCluster.getClusterClient.getFlinkConfiguration.getInteger("rest.port",
0)
- Get the jobId via http://localhost:61869/jobs/
- Get the verticeId via
http://localhost:61869/jobs/c3879cca4ba23ad734b2810ba0d73873
- Get the metric via
http://localhost:61869/jobs/c3879cca4ba23ad734b2810ba0d73873/vertices/0a448493b4782967b150582570326227/metrics/?get=0.Sink__Unnamed.errors_sink
Should be available a better way to get the metric or test this ?
Thanks
