Pull Request Replication Controller

https://mercari.connpass.com/event/227024/
で発表しました。

アーカイブはYouTubeから見れます！
https://www.youtube.com/watch?v=u5Eq-uJBvzg

ちなみに、TLA+チートシートは以下
https://zenn.dev/riita10069/articles/bc689cae1c7bc0

Transcript

4. GitHub API PRRC Kubernetes Deployment Create/Update/Delete Virtual Service
5. Pros. Cons.
6. GitHub Open Close kube-github operator Kubernetes Deployment WebHook WebHook Create/Update/Delete Virtual Service Pull Request Repository Repository PRRC Correspond
7. Pros. Cons.
8. How was it implemented?
9. https://hackernoon.com/level-triggering-and-reconciliation-in-kubernetes-1f17fe30333d Level Triggering Architecture
10. Repository1 Repository2 Repository3 GitHub WebHook mercari/Repository2/#12 #12 #14 #7 #11 #68 #100 #100 #65
11. Repository1 Repository2 Repository3 GitHub WebHook mercari/Repository2/#12 #12 #14 #7 #11 #68 #100 #100 #65 #12
12. Repository1 Repository2 Repository3 GitHub WebHook mercari/Repository1/#12 #12 #14 #7 #11 #68 #100 #100 #65 #12
13. Repository1 Repository2 Repository3 GitHub WebHook mercari/Repository1/#12 #12 #14 #7 #11 #68 #100 #100 #65 Updated!! #12
14. Repository1 Repository2 Repository3 GitHub WebHook mercari/Repository3/#100 #12 #14 #7 #11 #68 #100 #100 #65 #12
15. Repository1 Repository2 Repository3 GitHub WebHook mercari/Repository3/#100 #12 #14 #7 #11 #68 #100 #65 Updated!! Deleted!! #12
16. Repository1 Repository2 Repository3 GitHub WebHook mercari/Repository4/#1 #12 #14 #7 #11 #68 #100 #65 #12
17. Repository1 Repository2 Repository3 GitHub WebHook mercari/Repository4/#1 #12 #14 #7 #11 #68 #100 #65 #12 Not Found!!
18. Is that really correct?
19. Distributed systems are dif f icult.
20. https://github.com/tlaplus/tlaplus
21. https://zenn.dev/riita10069/articles/bc689cae1c7bc0
24. #3 #3 #1 #2 GitHub WebHook mercari/Repository1/#3’ Repository1 GitHub WebHook mercari/Repository1/#3’’ Updated!! #3’’ #1 #2 Repository1 Updated!! #3’ #1 #2 Repository1
25. Assume that WebHooks for the same PR do not come instantly.
26. Verify the webhook is latest by timestamp
27. GitHub API Kubernetes Pull Request Create/Update/Delete kube-github operator
29. https://cloudark.medium.com/kubernetes-custom-controllers-b6c7d0668fdf Informer is a component which monitors object changes 
 and stores data in a thread-safe in-memory cache. Lister is a component which gets list of resources.
30. Create Index Create Key and Value Call Lister with filter
31. https://github.com/kubernetes/client-go/blob/8aceb98010c1c18b6b54a35b52fd5b46905e3d7f/tools/cache/store.go#L68 Key: Namespace/Name Value: Resource Object There is no need to O(N) to find an object with a specific NamespacedName.
32. Controller API Server
33. Controller Client Logic Repository API Server Knows GitHub Knows API Knows Nothing Sync Worker
34. Controller envtest Download these binary directly Logic Repository Knows envtest Knows Nothing
35. Logic Repository Knows Nothing https://github.com/sanposhiho/gomockhandler mock gomock gomockhandler https://github.com/golang/mock
36. $ gomockhandler -config=/path/to/gomockhandler.json -source=foo.go -destination=./mock/ Configuring a new mock $ gomockhandler mockgen Generate mock $ gomockhandler check Verify the mock is up to date
38. Kubernetes WebHook kubectl