Introduce kstatus watcher by AustinAbro321 · Pull Request #13604 · helm/helm

AustinAbro321 · 2025-01-06T16:52:50Z

What this PR does / why we need it:
This PR introduces a statusWaiter using kstatus. More details here - H4HIP: Wait with kstatus

Notes to reviewers:

I have created this repo with practical examples to show the differences between the wait logic https://github.com/AustinAbro321/helm-wait-examples.
kstatus is behind an interface and not directly exposed by this library, however library users can still use the new waiter by using method SetWaiter(kube.StatusWatcherStrategy) on a kube.Client object then calling client.Wait
I have not written any docs, I assume that can be done when we are closer to Helm 4, a lot of it is covered by linking to - https://github.com/kubernetes-sigs/cli-utils/blob/master/pkg/kstatus/README.md

If applicable:

this PR contains user facing changes (the docs needed label should be applied if so)
this PR contains unit tests
this PR has been tested for backwards compatibility

Signed-off-by: Austin Abro <AustinAbro321@gmail.com>

…factor-wait

Signed-off-by: Austin Abro <AustinAbro321@gmail.com>

Co-authored-by: George Jenkins <gvjenkins@gmail.com> Signed-off-by: Austin Abro <37223396+AustinAbro321@users.noreply.github.com>

Signed-off-by: Austin Abro <AustinAbro321@gmail.com>

stefanprodan · 2025-03-12T10:02:59Z

I've tested the RESTMapper from kubernetes-sigs/controller-runtime#3151 and the issue with preferred version has been fixed. I suggest waiting on @alvaroaleman PR to be merged and backported to controller-runtime v0.20. Then we can drop the RESTMapper vendoring from this PR and use upstream.

Signed-off-by: Austin Abro <AustinAbro321@gmail.com>

AustinAbro321 · 2025-03-25T14:19:38Z

@stefanprodan I added dependency sigs.k8s.io/controller-runtime v0.20.4 which includes the linked PR. Began using apiutil.NewDynamicRestMapper from controller-runtime and deleted the RESTMapper vendoring

scottrigby

LGTM 👍

Same reasoning as here #13604 (review), but also reviewed how feedback from @gjenkins8 was addressed 👍 and also excellent that was landed in upstream sigs.k8s.io/controller-runtime as pointed out by @stefanprodan and implemented in this PR.

This is a large PR for Helm, but something Helm maintainers have wanted to see in Helm for a while. This is extremely well done, and given our Helm 4 schedule I think this is our best opportunity to get kstatus support into Helm.

Also special thanks to @stefanprodan for the thorough review—this feedback is invaluable since Flux figured out how to properly add kstatus support as a Helm SDK user. It's worth noting that this kstuatus support approach has been long since thoroughly tested by Helm users via Flux.

sabre1041

Verified test cases

While looking at SDK feature for v4. I was surprise with the error: > "reporter failed to start: event funnel closed: context deadline exceeded" It is related when you forgot to set a minimal timeout: ```go upgradeClient := action.NewUpgrade(actionConfig) upgradeClient.WaitStrategy = kube.StatusWatcherStrategy // When Timeout is zero, the status wait uses a context with zero timeout which // immediately expires causing "context deadline exceeded" errors. upgradeClient.Timeout = 2 * time.Minute ``` Also maybe it should be even more documented. Initial [PR](helm#13604) say: > I have not written any docs, I assume that can be done when we are closer to Helm 4, a lot of it is covered by linking to - https://github.com/kubernetes-sigs/cli-utils/blob/master/pkg/kstatus/README.md Related: - helm#31411 (comment)

> "reporter failed to start: event funnel closed: context deadline exceeded" It happens when you forget to set a minimal timeout: ```go upgradeClient := action.NewUpgrade(actionConfig) upgradeClient.WaitStrategy = kube.StatusWatcherStrategy // When Timeout is zero, the status wait uses a context with zero timeout which // immediately expires causing "context deadline exceeded" errors. upgradeClient.Timeout = 2 * time.Minute ``` Also maybe it might be worth documenting this more clearly. Initial [PR](helm#13604) say: > I have not written any docs, I assume that can be done when we are closer to Helm 4, a lot of it is covered by linking to - https://github.com/kubernetes-sigs/cli-utils/blob/master/pkg/kstatus/README.md Related: - helm#31411 (comment) Signed-off-by: Benoit Tigeot <benoit.tigeot@lifen.fr>

AustinAbro321 added 30 commits December 17, 2024 23:48

WIP

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Signed-off-by: Austin Abro <AustinAbro321@gmail.com>

Merge branch 'refactor-wait' of github.com:AustinAbro321/helm into re…

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extending factory to enable getting a watcher

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Signed-off-by: Austin Abro <AustinAbro321@gmail.com>

understand it better

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basic design up and balling

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make a working test

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cleanup test

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change structure of client

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only emebed waiter

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refactor new

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refactor test

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refactor test

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option to wait for jobs

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comments

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paused as ready now working

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paused as ready

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context

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simplify things

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save state while I change up tests

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wait for delete working

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unknown status

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delete wait and get completed phase

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merge

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go fmt

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provide path for creating new legacy waiter

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status wait

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ability to create different waiters

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helm waiter

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Helm waiter

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Signed-off-by: Austin Abro <AustinAbro321@gmail.com>

status function

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Signed-off-by: Austin Abro <AustinAbro321@gmail.com>

AustinAbro321 and others added 5 commits March 7, 2025 14:27

client->restmapper

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Signed-off-by: Austin Abro <AustinAbro321@gmail.com>

cleanup if statement

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Update pkg/cmd/flags.go

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Co-authored-by: George Jenkins <gvjenkins@gmail.com> Signed-off-by: Austin Abro <37223396+AustinAbro321@users.noreply.github.com>

warnings

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legacy waiter

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AustinAbro321 added 5 commits March 20, 2025 16:32

go mod tidy

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Signed-off-by: Austin Abro <AustinAbro321@gmail.com>

update to get waiter instead of set

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merge

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switch back to k8s rest mapper

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go fmt

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Signed-off-by: Austin Abro <AustinAbro321@gmail.com>

scottrigby approved these changes Mar 28, 2025

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sabre1041 approved these changes Mar 31, 2025

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scottrigby removed the Has One Approval This PR has one approval. It still needs a second approval to be merged. label Apr 5, 2025

scottrigby merged commit 985f5af into helm:main Apr 5, 2025
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scottrigby mentioned this pull request Apr 5, 2025

Removed InterfaceExt #13446

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benoittgt mentioned this pull request Apr 11, 2025

Improve error reporting on context deadline exceeded #30735

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benoittgt mentioned this pull request Jul 1, 2025

Can Helm wait for a custom resource to be ready? #12136

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AustinAbro321 mentioned this pull request Jul 9, 2025

update status for HIP 22 helm/community#402

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benoittgt mentioned this pull request Oct 24, 2025

Unify --wait strategy inputs, clarify defaults and docs; avoid SDK timeout footgun #31421

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benoittgt mentioned this pull request Dec 2, 2025

New watcher wait strategy lacking SDK logging #31585

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giautm mentioned this pull request Jan 8, 2026

pkg/kube: wait CRDs in hook #31703

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AustinAbro321 mentioned this pull request Jan 9, 2026

feat!: upgrade to Helm 4 zarf-dev/zarf#4350

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matheuscscp mentioned this pull request Jan 22, 2026

fix: use kube logger with status waiter #31717

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coderabbitai bot mentioned this pull request Mar 22, 2026

Migrate from helm/v1-alpha (deprecated) to helm/v2-alpha Iam-Karan-Suresh/Operator-Repository#12

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Introduce kstatus watcher#13604

Introduce kstatus watcher#13604
scottrigby merged 106 commits intohelm:mainfrom
AustinAbro321:refactor-wait

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