Commit Graph

4 Commits

Author SHA1 Message Date
Yecheng Fu 2be543e65a Simplify some code and comments.
Signed-off-by: Yecheng Fu <cofyc.jackson@gmail.com>
2018-04-25 19:29:34 +02:00
Yecheng Fu 3a253f796c Fix grammar in comments and add missing `expectedMaxItems` to let it
break fast.

Signed-off-by: Yecheng Fu <cofyc.jackson@gmail.com>
2018-04-25 19:29:03 +02:00
Yecheng Fu d73b0d3141 Move hasSynced interface and its implementations to *_test.go files.
Signed-off-by: Yecheng Fu <cofyc.jackson@gmail.com>
2018-04-25 19:28:49 +02:00
Yecheng Fu 8ceb8f2ae8 Refactor Kubernetes Discovery Part 2: Refactoring
- Do initial listing and syncing to scrape manager, then register event
  handlers may lost events happening in listing and syncing (if it
  lasted a long time). We should register event handlers at the very
  begining, before processing just wait until informers synced (sync in
  informer will list all objects and call OnUpdate event handler).
- Use a queue then we don't block event callbacks and an object will be
  processed only once if added multiple times before it being processed.
- Fix bug in `serviceUpdate` in endpoints.go, we should build endpoints
  when `exists && err == nil`. Add `^TestEndpointsDiscoveryWithService`
  tests to test this feature.

Testing:

- Use `k8s.io/client-go` testing framework and fake implementations which are
  more robust and reliable for testing.
- `Test\w+DiscoveryBeforeRun` are used to test objects created before
  discoverer runs
- `Test\w+DiscoveryAdd\w+` are used to test adding objects
- `Test\w+DiscoveryDelete\w+` are used to test deleting objects
- `Test\w+DiscoveryUpdate\w+` are used to test updating objects
- `TestEndpointsDiscoveryWithService\w+` are used to test endpoints
  events triggered by services
- `cache.DeletedFinalStateUnknown` related stuffs are removed, because
  we don't care deleted objects in store, we only need its name to send
  a specical `targetgroup.Group` to scrape manager

Signed-off-by: Yecheng Fu <cofyc.jackson@gmail.com>
2018-04-25 19:28:34 +02:00