Using Informers instead of webhooks: spike & implementation - Githubissues

weaveworks / pipeline-controller

This repository contains the Pipeline CRD and associated controller for Weave GitOps Enterprise.

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Using Informers instead of webhooks: spike & implementation #179

Closed luizbafilho closed 1 year ago

luizbafilho commented 1 year ago

Spike how to use informers to get app's versions updates instead of relying on webhooks to get those.

The main goal is to greatly simplify the pipeline setup, drastically reducing the number of configurations needed to get those working

Basic Plan:

Clients Manager

New controller watching for all gitopscluster crs
Controller receives a connectionsManager that will store all clusters connections
controller will generate a checksum from the secret data and set as annotation
Whenever there change, check if the secret checksum has changed and update the connection
it should also check for deletion and remove the client from the manager

Pipeline controller

it will set labels in the app ref on all targets

pipelines.weave.works/enabled: true
pipelines.weave.works/name: podinfo
pipelines.weave.works/namespace: github-prod
pipelines.weave.works/env: dev
pipelines.weave.works/target: dev-1

when deleting the pipeline, remove the labels

HelmReleases Watcher

Use informers to watch for helm releases updates
Watch only releases with pipelines.weave.works/enabled: true label
Whenever the watcher gets an update where the new lastAppliedRevision is different from the old one, trigger the promotion.

LappleApple commented 1 year ago

Closing in favor of current design doc/work https://github.com/weaveworks/pipeline-controller/issues/191