reduce apiserver requests for dispatcher

[xinydev]

Signed-off-by: XinYang xinydev@gmail.com

The dispatcher now only gets information for the channel it cares about. reducing the GET requests to apiserver in a cluster with lots of channels.

Proposed Changes

• return before GET requests for channels dispatcher doesn’t need to care about

Release Note

Docs

[knative-prow-robot]

Welcome @xinydev! It looks like this is your first PR to knative-sandbox/eventing-kafka 🎉

[knative-prow-robot]

Hi @xinydev. Thanks for your PR.

I'm waiting for a knative-sandbox member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[lionelvillard]

/ok-to-test

[knative-metrics-robot]

The following is the coverage report on the affected files.
Say /test pull-knative-sandbox-eventing-kafka-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
pkg/channel/distributed/dispatcher/controller/kafkachannel.go	78.9%	71.8%	-7.0

[codecov]

Codecov Report

Merging #456 (ee04c1d) into main (9c479e0) will decrease coverage by 0.13%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #456      +/-   ##
==========================================
- Coverage   73.94%   73.80%   -0.14%     
==========================================
  Files         138      138              
  Lines        5315     5315              
==========================================
- Hits         3930     3923       -7     
- Misses       1140     1145       +5     
- Partials      245      247       +2     

Impacted Files	Coverage Δ
.../distributed/dispatcher/controller/kafkachannel.go	64.36% <100.00%> (-8.05%)	⬇️

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[travis-minke-sap]

looks like a good change (thanks!) - I'm doing a quick smoke test now and then will approve!

[travis-minke-sap]

Thanks for this fix - nice efficiency win !

[knative-prow-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: travis-minke-sap

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