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GitHub API PRRC Kubernetes Deployment Create/Update/Delete Virtual Service

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Pros. Cons.

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GitHub Open Close kube-github operator Kubernetes Deployment WebHook WebHook Create/Update/Delete Virtual Service Pull Request Repository Repository PRRC Correspond

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Pros. Cons.

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How was it implemented?

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https://hackernoon.com/level-triggering-and-reconciliation-in-kubernetes-1f17fe30333d Level Triggering Architecture

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Repository1 Repository2 Repository3 GitHub WebHook mercari/Repository2/#12 #12 #14 #7 #11 #68 #100 #100 #65

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Repository1 Repository2 Repository3 GitHub WebHook mercari/Repository2/#12 #12 #14 #7 #11 #68 #100 #100 #65 #12

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Repository1 Repository2 Repository3 GitHub WebHook mercari/Repository1/#12 #12 #14 #7 #11 #68 #100 #100 #65 #12

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Repository1 Repository2 Repository3 GitHub WebHook mercari/Repository1/#12 #12 #14 #7 #11 #68 #100 #100 #65 Updated!! #12

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Repository1 Repository2 Repository3 GitHub WebHook mercari/Repository3/#100 #12 #14 #7 #11 #68 #100 #100 #65 #12

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Repository1 Repository2 Repository3 GitHub WebHook mercari/Repository3/#100 #12 #14 #7 #11 #68 #100 #65 Updated!! Deleted!! #12

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Repository1 Repository2 Repository3 GitHub WebHook mercari/Repository4/#1 #12 #14 #7 #11 #68 #100 #65 #12

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Repository1 Repository2 Repository3 GitHub WebHook mercari/Repository4/#1 #12 #14 #7 #11 #68 #100 #65 #12 Not Found!!

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Is that really correct?

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Distributed systems are dif f icult.

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https://github.com/tlaplus/tlaplus

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https://zenn.dev/riita10069/articles/bc689cae1c7bc0

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#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

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Assume that WebHooks for the same PR do not come instantly.

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Verify the webhook is latest by timestamp

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GitHub API Kubernetes Pull Request Create/Update/Delete kube-github operator

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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.

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Create Index Create Key and Value Call Lister with filter

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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.

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Controller API Server

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Controller Client Logic Repository API Server Knows GitHub Knows API Knows Nothing Sync Worker

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Controller envtest Download these binary directly Logic Repository Knows envtest Knows Nothing

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Logic Repository Knows Nothing https://github.com/sanposhiho/gomockhandler mock gomock gomockhandler https://github.com/golang/mock

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$ 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

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Kubernetes WebHook kubectl