TEP-0114: Remove support for v1alpha1.Run

v1alpha1.Run has been replaced by v1beta1.CustomRun, and the PipelineRun controller no longer creates v1alpha1.Run objects.
This commit removes support for v1alpha1.Run in the PipelineRun controller.
It maintains the API fields for v1alpha1.Run for use by clients.

Note: Retries behavior has changed between v1alpha1.Run and v1beta1.CustomRun.
The PipelineRun controller does not consider whether CustomRuns have retries remaining to determine whether they have completed;
it only considers their status.

cmd/controller/main.go

@@ -29,7 +29,6 @@ import (
 	"github.com/tektoncd/pipeline/pkg/reconciler/customrun"
 	"github.com/tektoncd/pipeline/pkg/reconciler/pipelinerun"
 	"github.com/tektoncd/pipeline/pkg/reconciler/resolutionrequest"
-	"github.com/tektoncd/pipeline/pkg/reconciler/run"
 	"github.com/tektoncd/pipeline/pkg/reconciler/taskrun"
 	"go.opentelemetry.io/otel"
 	"go.opentelemetry.io/otel/exporters/jaeger"
@@ -131,7 +130,6 @@ func main() {
 	sharedmain.MainWithConfig(ctx, ControllerLogKey, cfg,
 		taskrun.NewController(opts, clock.RealClock{}, tpTaskrun),
 		pipelinerun.NewController(opts, clock.RealClock{}, tpPipelineRun),
-		run.NewController(),
 		resolutionrequest.NewController(clock.RealClock{}),
 		customrun.NewController(),
 	)

cmd/webhook/main.go

@@ -51,7 +51,6 @@ import (
 
 var types = map[schema.GroupVersionKind]resourcesemantics.GenericCRD{
 	// v1alpha1
-	v1alpha1.SchemeGroupVersion.WithKind("Run"):                &v1alpha1.Run{},
 	v1alpha1.SchemeGroupVersion.WithKind("VerificationPolicy"): &v1alpha1.VerificationPolicy{},
 	// v1beta1
 	v1beta1.SchemeGroupVersion.WithKind("Pipeline"):    &v1beta1.Pipeline{},

docs/README.md

@@ -72,7 +72,7 @@ See the following topics to learn how to use Tekton Pipelines in your project:
 - [Viewing logs](logs.md)
 - [Pipelines metrics](metrics.md)
 - [Variable Substitutions](tasks.md#using-variable-substitution)
-- [Running a Custom Task (alpha)](runs.md)
+- [Running a Custom Task](customruns.md)
 - [Remote resolution of Pipelines and Tasks](resolution.md)
 - [Trusted Resources](trusted-resources.md)
 

docs/customruns.md

@@ -26,7 +26,8 @@ weight: 206
 
 # Overview
 
-*We are promoting Custom Task from [`v1alpha1.Run`](runs.md) to `v1beta1.CustomRun`, please refer to the [migration doc](migrating-v1alpha1.Run-to-v1beta1.CustomRun.md) for details.*
+*`v1beta1.CustomRun` has replaced `v1alpha1.Run` for custom task definitions. Please refer to the [migration doc](migrating-v1alpha1.Run-to-v1beta1.CustomRun.md) for details
+on updating `v1alpha1.Run` to `v1beta1.CustomRun` before upgrading to a release that does not support `v1alpha1.Run`.*
 
 A `CustomRun` allows you to instantiate and execute a [Custom
 Task](https://github.com/tektoncd/community/blob/main/teps/0002-custom-tasks.md),

docs/deprecations.md

@@ -31,10 +31,11 @@ The following features are deprecated but have not yet been removed.
 
 The features listed below have been removed but may still be supported in releases that have not reached their EOL.
 
-| Removed Feature                                                                                                                                                                                                   | Removal Pull Request  | Removal Date | Latest Release with Support | EOL of Supported Release |
+| Removed Feature                                                                                                                                                                                                   | Removal Pull Request  | Removal Date | Latest LTS Release with Support | EOL of Supported Release |
 |------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------|-------------------------------------|-------------------------------------|
 | [The `PipelineRun.Status.TaskRuns` and `PipelineRun.Status.Runs` fields and the `embedded-status` feature flag along with their functionalities have been tombstoned since v0.45.](https://github.com/tektoncd/community/blob/main/teps/0100-embedded-taskruns-and-runs-status-in-pipelineruns.md)                                                             | [[TEP100] Remove Taskruns and Runs Fields for PipelineRunStatus](https://github.com/tektoncd/pipeline/pull/6099)         | Jan 25, 2023 | v0.44.0 | Jan 24, 2024 |
 | PipelineResources are removed, along with the components of the API that rely on them as proposed in [TEP-0074](https://github.com/tektoncd/community/blob/main/teps/0074-deprecate-pipelineresources.md). See [Removed `PipelineResources` related features](#removed-pipelineresources-related-features) for more info. | [[TEP074] Remove Generic PipelineResources with Rest of Resources Types](https://github.com/tektoncd/pipeline/pull/6150) | Mar 8, 2023  | v0.44.0 | Jan 24, 2024 |
+| v1alpha1 Runs are removed, as proposed in [TEP-0114](https://github.com/tektoncd/community/blob/main/teps/0114-custom-tasks-beta.md). | [TEP-0114: Remove support for v1alpha1.Run](https://github.com/tektoncd/pipeline/pull/6508) | April 7, 2023  | v0.44.0 | Jan 24, 2024 |
 
 ### Removed PipelineResources related features:
 

docs/pipelines.md

@@ -1626,10 +1626,9 @@ Starting from `v0.47.0`, feature flag `custom-task-version` is removed and only
 can implement behavior that doesn't correspond directly to running a workload in a `Pod` on the cluster.
 For example, a custom task might execute some operation outside of the cluster and wait for its execution to complete.
 
-A `PipelineRun` starts a custom task by creating a [`Run`](https://github.com/tektoncd/pipeline/blob/main/docs/runs.md)/[`CustomRun`](https://github.com/tektoncd/pipeline/blob/main/docs/customruns.md) instead of a `TaskRun`.
+A `PipelineRun` starts a custom task by creating a [`CustomRun`](https://github.com/tektoncd/pipeline/blob/main/docs/customruns.md) instead of a `TaskRun`.
 In order for a custom task to execute, there must be a custom task controller running on the cluster
-that is responsible for watching and updating `Run/CustomRun`s which reference their type.
-If no such controller is running, those `Run/CustomRun`s will never complete and Pipelines using them will time out.
+that is responsible for watching and updating `CustomRun`s which reference their type.
 
 ### Specifying the target Custom Task