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Add context variables for PipelineRun and TaskRun UIDs
A user may want to tag an oci image with the TaskRun or PipelineRun UIDs. Currently, they can't do that because `metadata.uid` for TaskRuns and PipelineRuns are not exposed. In this PR, we add the UID context variable for TaskRuns and PipelineRun. Users can now use `$(context.taskRun.uid)` and `$(context.pipelineRun.uid)` to access and use UIDs. In addition, we add validation for all context variables that are supported so far -- `context.task.name`, `context.taskRun.name`, `context.taskRun.namespace`, `context.taskRun.uid`, `context.pipeline.name`, `context.pipelineRun.name`, `context.pipelineRun.namespace`, `context.pipelineRun.uid`. Partially fixes #2958 Co-authored-by: Jerop <jerop@google.com> Co-authored-by: Scott <sbws@google.com>
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examples/v1beta1/pipelineruns/using_context_variables.yaml
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| kind: PipelineRun | ||
| apiVersion: tekton.dev/v1beta1 | ||
| metadata: | ||
| generateName: test-pipelinerun- | ||
| spec: | ||
| pipelineSpec: | ||
| tasks: | ||
| - name: task1 | ||
| params: | ||
| - name: pipeline-uid | ||
| value: "$(context.pipelineRun.uid)" | ||
| - name: pipeline-name | ||
| value: "$(context.pipeline.name)" | ||
| - name: pipelineRun-name | ||
| value: "$(context.pipelineRun.name)" | ||
| - name: pipelineRun-name-uid | ||
| value: ["$(context.pipelineRun.name)", "$(context.pipelineRun.uid)"] | ||
| taskSpec: | ||
| params: | ||
| - name: pipeline-uid | ||
| - name: pipeline-name | ||
| - name: pipelineRun-name | ||
| steps: | ||
| - image: ubuntu | ||
| name: print-uid | ||
| script: | | ||
| echo "TaskRun UID: $(context.taskRun.uid)" | ||
| echo "PipelineRun UID from params: $(params.pipeline-uid)" | ||
| - image: ubuntu | ||
| name: print-names | ||
| script: | | ||
| echo "Task name: $(context.task.name)" | ||
| echo "TaskRun name: $(context.taskRun.name)" | ||
| echo "Pipeline name from params: $(params.pipeline-name)" | ||
| echo "PipelineRun name from params: $(params.pipelineRun-name)" |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| kind: TaskRun | ||
| apiVersion: tekton.dev/v1beta1 | ||
| metadata: | ||
| generateName: test-taskrun- | ||
| spec: | ||
| taskSpec: | ||
| steps: | ||
| - image: ubuntu | ||
| name: print-uid | ||
| script: | | ||
| echo "TaskRunUID name: $(context.taskRun.uid)" | ||
| - image: ubuntu | ||
| name: print-names | ||
| script: | | ||
| echo "Task name: $(context.task.name)" | ||
| echo "TaskRun name: $(context.taskRun.name)" |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| /* | ||
| Copyright 2020 The Tekton Authors | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| package resources | ||
|
|
||
| import ( | ||
| "fmt" | ||
|
|
||
| "github.com/tektoncd/pipeline/pkg/apis/pipeline/v1beta1" | ||
| "github.com/tektoncd/pipeline/pkg/substitution" | ||
| "k8s.io/apimachinery/pkg/util/sets" | ||
| "knative.dev/pkg/apis" | ||
| ) | ||
|
|
||
| // ValidateContextVariables validate that context variables used in Pipelines and PipelineRuns are valid | ||
| func ValidateContextVariables(ps *v1beta1.PipelineSpec, pr *v1beta1.PipelineRun) *apis.FieldError { | ||
| var paramValues []string | ||
|
|
||
| for _, param := range(pr.Spec.Params) { | ||
| newParamValues := getParameterValues(param) | ||
| paramValues = append(paramValues, newParamValues...) | ||
| } | ||
|
|
||
| if err := validatePipelineRunContextVariables(paramValues); err != nil { | ||
| return err | ||
| } | ||
| if err := validatePipelineContextVariables(¶mValues); err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
|
|
||
| func validatePipelineRunContextVariables(paramValues []string) *apis.FieldError { | ||
| pipelineRunContextNames := sets.NewString().Insert( | ||
| "name", | ||
| "namespace", | ||
| "uid", | ||
| ) | ||
|
|
||
| for _, paramValue := range(paramValues) { | ||
| if err := substitution.ValidateVariable(fmt.Sprintf("param[%s]", paramValue), paramValue, "context\\.pipelineRun", "params", "pipelinespec.params", pipelineRunContextNames); err != nil { | ||
| return err | ||
| } | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func validatePipelineContextVariables(paramValues *[]string) *apis.FieldError { | ||
| pipelineContextNames := sets.NewString().Insert( | ||
| "name", | ||
| ) | ||
|
|
||
| for _, paramValue := range(*paramValues) { | ||
| if err := substitution.ValidateVariable(fmt.Sprintf("param[%s]", paramValue), paramValue, "context\\.pipeline", "params", "pipelinespec.params", pipelineContextNames); err != nil { | ||
| return err | ||
| } | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
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| func getParameterValues(param v1beta1.Param) []string{ | ||
| var paramValues []string | ||
|
|
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| if param.Value.Type == v1beta1.ParamTypeString { | ||
| paramValues = append(paramValues, param.Value.StringVal) | ||
| } else { | ||
| paramValues = append(paramValues, param.Value.ArrayVal...) | ||
| } | ||
|
|
||
| return paramValues | ||
| } |
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