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Merge pull request #474 from opendevstack/feature/queueing-new
Implement basic queueing
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| package manager | ||
|
|
||
| import ( | ||
| "context" | ||
| "testing" | ||
|
|
||
| tektonClient "github.com/opendevstack/pipeline/internal/tekton" | ||
| "github.com/opendevstack/pipeline/pkg/config" | ||
| tekton "github.com/tektoncd/pipeline/pkg/apis/pipeline/v1beta1" | ||
| ) | ||
|
|
||
| func TestCreatePipelineRun(t *testing.T) { | ||
| tc := &tektonClient.TestClient{} | ||
| ctxt := context.TODO() | ||
| pData := PipelineData{ | ||
| Name: "foo", | ||
| Repository: "repo", | ||
| GitRef: "branch", | ||
| Stage: config.DevStage, | ||
| PVC: "pvc", | ||
| } | ||
| pr, err := createPipelineRun(tc, ctxt, pData, false) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
| if pr.GenerateName != "foo-" { | ||
| t.Fatalf("Expected generated name to be foo-, got: %s", pr.GenerateName) | ||
| } | ||
| if pr.Spec.PipelineRef.Name != "foo" { | ||
| t.Fatalf("Expected pipeline ref to be foo, got: %s", pr.Spec.PipelineRef.Name) | ||
| } | ||
| if pr.Spec.Status != "" { | ||
| t.Fatalf("Expected status to be empty, got: %s", pr.Spec.Status) | ||
| } | ||
| if pr.Labels[repositoryLabel] != pData.Repository { | ||
| t.Fatalf("Expected label %s to be %s, got: %s", repositoryLabel, pData.Repository, pr.Labels[repositoryLabel]) | ||
| } | ||
| if pr.Labels[gitRefLabel] != pData.GitRef { | ||
| t.Fatalf("Expected label %s to be %s, got: %s", gitRefLabel, pData.GitRef, pr.Labels[gitRefLabel]) | ||
| } | ||
| if pr.Labels[stageLabel] != pData.Stage { | ||
| t.Fatalf("Expected label %s to be %s, got: %s", stageLabel, pData.Stage, pr.Labels[stageLabel]) | ||
| } | ||
| workspaceCfg := pr.Spec.Workspaces[0] | ||
| if workspaceCfg.Name != sharedWorkspaceName { | ||
| t.Fatalf("Expected generated name to be %s, got: %s", sharedWorkspaceName, workspaceCfg.Name) | ||
| } | ||
| if workspaceCfg.PersistentVolumeClaim.ClaimName != "pvc" { | ||
| t.Fatalf("Expected generated name to be pvc, got: %s", workspaceCfg.Name) | ||
| } | ||
| if len(tc.CreatedPipelineRuns) != 1 { | ||
| t.Fatal("No pipeline run created") | ||
| } | ||
| pr, err = createPipelineRun(tc, ctxt, pData, true) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
| if pr.Spec.Status != tekton.PipelineRunSpecStatusPending { | ||
| t.Fatalf("Expected status to be pending, got: %s", pr.Spec.Status) | ||
| } | ||
| if len(tc.CreatedPipelineRuns) != 2 { | ||
| t.Fatal("No pipeline run created") | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,147 @@ | ||
| package manager | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "math/rand" | ||
| "time" | ||
|
|
||
| tektonClient "github.com/opendevstack/pipeline/internal/tekton" | ||
| "github.com/opendevstack/pipeline/pkg/logging" | ||
| tekton "github.com/tektoncd/pipeline/pkg/apis/pipeline/v1beta1" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| ) | ||
|
|
||
| // pipelineRunQueue manages multiple queues. These queues | ||
| // can be polled in certain intervals. | ||
| type pipelineRunQueue struct { | ||
| queues map[string]bool | ||
| pollInterval time.Duration | ||
| // logger is the logger to send logging messages to. | ||
| logger logging.LeveledLoggerInterface | ||
| } | ||
|
|
||
| // StartPolling periodically checks status for given identifier. | ||
| // The time until the first time is not more than maxInitialWait. | ||
| func (q *pipelineRunQueue) StartPolling(pt QueueAdvancer, identifier string, maxInitialWait time.Duration) chan bool { | ||
| quit := make(chan bool) | ||
| if q.queues[identifier] { | ||
| close(quit) | ||
| return quit | ||
| } | ||
| q.queues[identifier] = true | ||
|
|
||
| wait(maxInitialWait) | ||
|
|
||
| ticker := time.NewTicker(q.pollInterval) | ||
| go func() { | ||
| for { | ||
| select { | ||
| case <-quit: | ||
| q.queues[identifier] = false | ||
| ticker.Stop() | ||
| return | ||
| case <-ticker.C: | ||
| q.logger.Debugf("Advancing queue for %s ...", identifier) | ||
| queueLength, err := pt.AdvanceQueue(identifier) | ||
| if err != nil { | ||
| q.logger.Warnf("error during poll tick: %s", err) | ||
| } | ||
| if queueLength == 0 { | ||
| q.logger.Debugf("Stopping to poll for %s ...", identifier) | ||
| close(quit) | ||
| } | ||
| } | ||
| } | ||
| }() | ||
|
|
||
| return quit | ||
| } | ||
|
|
||
| // QueueAdvancer is the interface passed to | ||
| // *pipelineRunQueue#StartPolling. | ||
| type QueueAdvancer interface { | ||
| // AdvanceQueue is called for each poll step. | ||
| AdvanceQueue(repository string) (int, error) | ||
| } | ||
|
|
||
| // Queue represents a pipeline run Queue. Pipelines of one repository must | ||
| // not run in parallel. | ||
| type Queue struct { | ||
| TektonClient tektonClient.ClientPipelineRunInterface | ||
| } | ||
|
|
||
| // AdvanceQueue starts the oldest pending pipeline run if there is no | ||
| // progressing pipeline run at the moment. | ||
| // It returns the queue length. | ||
| func (s *Server) AdvanceQueue(repository string) (int, error) { | ||
| s.Mutex.Lock() | ||
| defer s.Mutex.Unlock() | ||
| ctxt, cancel := context.WithTimeout(context.Background(), 5*time.Minute) | ||
| defer cancel() | ||
| pipelineRuns, err := listPipelineRuns(s.TektonClient, ctxt, repository) | ||
| if err != nil { | ||
| return 0, fmt.Errorf("could not retrieve existing pipeline runs: %w", err) | ||
| } | ||
| s.Logger.Debugf("Found %d pipeline runs related to repository %s.", len(pipelineRuns.Items), repository) | ||
| if len(pipelineRuns.Items) == 0 { | ||
| return 0, nil | ||
| } | ||
|
|
||
| var foundRunning bool | ||
| pendingPrs := []tekton.PipelineRun{} | ||
| for _, pr := range pipelineRuns.Items { | ||
| if pr.IsPending() { | ||
| pendingPrs = append(pendingPrs, pr) | ||
| continue | ||
| } | ||
| if pipelineRunIsProgressing(pr) { | ||
| foundRunning = true | ||
| continue | ||
| } | ||
| } | ||
| s.Logger.Debugf("Found runs for repo %s in state running=%v, pending=%d.", repository, foundRunning, len(pendingPrs)) | ||
|
|
||
| if !foundRunning && len(pendingPrs) > 0 { | ||
| // update oldest pending PR | ||
| sortPipelineRunsDescending(pendingPrs) | ||
| oldestPR := pendingPrs[len(pendingPrs)-1] | ||
| pendingPrs = pendingPrs[:len(pendingPrs)-1] | ||
| s.Logger.Infof("Starting pending pipeline run %s ...", oldestPR.Name) | ||
| oldestPR.Spec.Status = "" // remove pending status -> starts pipeline run | ||
| _, err := s.TektonClient.UpdatePipelineRun(ctxt, &oldestPR, metav1.UpdateOptions{}) | ||
| if err != nil { | ||
| return len(pendingPrs), fmt.Errorf("could not update pipeline run %s: %w", oldestPR.Name, err) | ||
| } | ||
| } | ||
| return len(pendingPrs), nil | ||
| } | ||
|
|
||
| // needsQueueing checks if any run has either: | ||
| // - pending status set OR | ||
| // - is progressing | ||
| func needsQueueing(pipelineRuns *tekton.PipelineRunList) bool { | ||
| for _, pr := range pipelineRuns.Items { | ||
| if pr.Spec.Status == tekton.PipelineRunSpecStatusPending || pipelineRunIsProgressing(pr) { | ||
| return true | ||
| } | ||
| } | ||
| return false | ||
| } | ||
|
|
||
| // pipelineRunIsProgressing returns true if the PR is not done, not pending, | ||
| // not cancelled, and not timed out. | ||
| func pipelineRunIsProgressing(pr tekton.PipelineRun) bool { | ||
| return !(pr.IsDone() || pr.IsPending() || pr.IsCancelled() || pr.IsTimedOut()) | ||
| } | ||
|
|
||
| // wait waits for up to maxInitialWait. The exact wait time is | ||
| // pseudo-randomized if maxInitialWait is longer than one second. | ||
| func wait(maxInitialWait time.Duration) { | ||
| initialWait := time.Second | ||
| if maxInitialWait > time.Second { | ||
| initialWait = time.Duration(rand.Intn(int(maxInitialWait.Seconds())-1) + 1) | ||
| } | ||
| timer := time.NewTimer(initialWait) | ||
| <-timer.C | ||
| } |
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