feat(scheduler): pass the shutdown/reload ctx to running tasks

Signed-off-by: Petu Eusebiu <[email protected]>

pkg/extensions/extension_search.go

@@ -4,6 +4,7 @@
 package extensions
 
 import (
+	"context"
 	"net/http"
 	"sync"
 	"time"
@@ -128,7 +129,7 @@ func newTrivyTask(interval time.Duration, cveInfo cveinfo.CveInfo,
 	return &trivyTask{interval, cveInfo, generator, log}
 }
 
-func (trivyT *trivyTask) DoWork() error {
+func (trivyT *trivyTask) DoWork(ctx context.Context) error {
 	trivyT.log.Info().Msg("updating the CVE database")
 
 	err := trivyT.cveInfo.UpdateDB()

pkg/extensions/scrub/scrub.go

@@ -4,6 +4,7 @@
 package scrub
 
 import (
+	"context"
 	"fmt"
 	"path"
 
@@ -58,6 +59,6 @@ func NewTask(imgStore storageTypes.ImageStore, repo string, log log.Logger) *Tas
 	return &Task{imgStore, repo, log}
 }
 
-func (scrubT *Task) DoWork() error {
-	return RunScrubRepo(scrubT.imgStore, scrubT.repo, scrubT.log)
+func (scrubT *Task) DoWork(ctx context.Context) error {
+	return RunScrubRepo(scrubT.imgStore, scrubT.repo, scrubT.log) //nolint: contextcheck
 }

pkg/extensions/sync/service.go

@@ -243,7 +243,7 @@ func (service *BaseService) SyncImage(repo, reference string) error {
 	service.log.Info().Str("remote", remoteURL).Str("repo", repo).Str("reference", reference).
 		Msg("sync: syncing image")
 
-	manifestDigest, err := service.syncTag(repo, remoteRepo, reference)
+	manifestDigest, err := service.syncTag(context.Background(), repo, remoteRepo, reference)
 	if err != nil {
 		return err
 	}
@@ -260,15 +260,15 @@ func (service *BaseService) SyncImage(repo, reference string) error {
 }
 
 // sync repo periodically.
-func (service *BaseService) SyncRepo(repo string) error {
+func (service *BaseService) SyncRepo(ctx context.Context, repo string) error {
 	service.log.Info().Str("repo", repo).Str("registry", service.client.GetConfig().URL).
 		Msg("sync: syncing repo")
 
 	var err error
 
 	var tags []string
 
-	if err = retry.RetryIfNecessary(context.Background(), func() error {
+	if err = retry.RetryIfNecessary(ctx, func() error {
 		tags, err = service.remote.GetRepoTags(repo)
 
 		return err
@@ -291,14 +291,20 @@ func (service *BaseService) SyncRepo(repo string) error {
 	localRepo := service.contentManager.GetRepoDestination(repo)
 
 	for _, tag := range tags {
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+		default:
+		}
+
 		if references.IsCosignTag(tag) {
 			continue
 		}
 
 		var manifestDigest digest.Digest
 
-		if err = retry.RetryIfNecessary(context.Background(), func() error {
-			manifestDigest, err = service.syncTag(localRepo, repo, tag)
+		if err = retry.RetryIfNecessary(ctx, func() error {
+			manifestDigest, err = service.syncTag(ctx, localRepo, repo, tag)
 
 			return err
 		}, service.retryOptions); err != nil {
@@ -314,7 +320,7 @@ func (service *BaseService) SyncRepo(repo string) error {
 		}
 
 		if manifestDigest != "" {
-			if err = retry.RetryIfNecessary(context.Background(), func() error {
+			if err = retry.RetryIfNecessary(ctx, func() error {
 				err = service.references.SyncAll(localRepo, repo, manifestDigest.String())
 				if errors.Is(err, zerr.ErrSyncReferrerNotFound) {
 					return nil
@@ -335,7 +341,7 @@ func (service *BaseService) SyncRepo(repo string) error {
 	return nil
 }
 
-func (service *BaseService) syncTag(localRepo, remoteRepo, tag string) (digest.Digest, error) {
+func (service *BaseService) syncTag(ctx context.Context, localRepo, remoteRepo, tag string) (digest.Digest, error) {
 	copyOptions := getCopyOptions(service.remote.GetContext(), service.local.GetContext())
 
 	policyContext, err := getPolicyContext(service.log)
@@ -397,7 +403,7 @@ func (service *BaseService) syncTag(localRepo, remoteRepo, tag string) (digest.D
 		service.log.Info().Str("remote image", remoteImageRef.DockerReference().String()).
 			Str("local image", fmt.Sprintf("%s:%s", localRepo, tag)).Msg("syncing image")
 
-		_, err = copy.Image(context.Background(), policyContext, localImageRef, remoteImageRef, &copyOptions)
+		_, err = copy.Image(ctx, policyContext, localImageRef, remoteImageRef, &copyOptions)
 		if err != nil {
 			service.log.Error().Err(err).Str("errortype", common.TypeOf(err)).
 				Str("remote image", remoteImageRef.DockerReference().String()).

pkg/extensions/sync/sync.go

@@ -23,7 +23,7 @@ type Service interface {
 	// Get next repo from remote /v2/_catalog, will return empty string when there is no repo left.
 	GetNextRepo(lastRepo string) (string, error) // used by task scheduler
 	// Sync a repo with all of its tags and references (signatures, artifacts, sboms) into ImageStore.
-	SyncRepo(repo string) error // used by periodically sync
+	SyncRepo(ctx context.Context, repo string) error // used by periodically sync
 	// Sync an image (repo:tag || repo:digest) into ImageStore.
 	SyncImage(repo, reference string) error // used by sync on demand
 	// Sync a single reference for an image.
@@ -129,6 +129,6 @@ func newSyncRepoTask(repo string, service Service) *syncRepoTask {
 	return &syncRepoTask{repo, service}
 }
 
-func (srt *syncRepoTask) DoWork() error {
-	return srt.service.SyncRepo(srt.repo)
+func (srt *syncRepoTask) DoWork(ctx context.Context) error {
+	return srt.service.SyncRepo(ctx, srt.repo)
 }

pkg/extensions/sync/sync_internal_test.go

@@ -165,7 +165,7 @@ func TestService(t *testing.T) {
 		service, err := New(conf, "", storage.StoreController{}, mocks.MetaDBMock{}, log.Logger{})
 		So(err, ShouldBeNil)
 
-		err = service.SyncRepo("repo")
+		err = service.SyncRepo(context.Background(), "repo")
 		So(err, ShouldNotBeNil)
 	})
 }

pkg/meta/signatures/signatures.go

@@ -125,11 +125,12 @@ func NewValidityTask(metaDB mTypes.MetaDB, repo mTypes.RepoMetadata, log log.Log
 	return &validityTask{metaDB, repo, log}
 }
 
-func (validityT *validityTask) DoWork() error {
+func (validityT *validityTask) DoWork(ctx context.Context) error {
 	validityT.log.Info().Msg("updating signatures validity")
 
 	for signedManifest, sigs := range validityT.repo.Signatures {
 		if len(sigs[CosignSignature]) != 0 || len(sigs[NotationSignature]) != 0 {
+			//nolint: contextcheck
 			err := validityT.metaDB.UpdateSignaturesValidity(validityT.repo.Name, godigest.Digest(signedManifest))
 			if err != nil {
 				validityT.log.Info().Msg("error while verifying signatures")

pkg/scheduler/README.md

@@ -6,7 +6,7 @@ In order to create a new generator (which will generate new tasks one by one) an
     ```
     This method should implement the logic for generating a new task. 
     Basically, when this method is called by the scheduler it should return the next task until there are no more tasks to be generated.
-    Also, the Task returned by this method should implement DoWork() method which should contain the logic that should be executed when this task is run by the scheduler.
+    Also, the Task returned by this method should implement DoWork(ctx context.Context) method which should contain the logic that should be executed when this task is run by the scheduler.
     ```
 2. ***IsDone() bool***
     ```
@@ -31,10 +31,10 @@ Notes:
 
 # How to submit a Task to the scheduler
 
-In order to create a new task and add it to the scheduler ***DoWork() error*** is the method that should be implemented. This should contain the logic that should be executed when this task is run by the scheduler.
+In order to create a new task and add it to the scheduler ***DoWork(ctx context.Context) error*** is the method that should be implemented. This should contain the logic that should be executed when this task is run by the scheduler.
 
 To submit a task to the scheduler ***SubmitTask*** should be called with the implemented task and the priority of the task as parameters.
 
 Note:
 
-    - A task can not be periodic. In order to add a periodic task, it can be created a generator which will generate periodically the same task.
+    - A task can not be periodic. In order to add a periodic task, it can be created a generator which will generate periodically the same task.

pkg/scheduler/scheduler.go

@@ -12,7 +12,7 @@ import (
 )
 
 type Task interface {
-	DoWork() error
+	DoWork(ctx context.Context) error
 }
 
 type generatorsPriorityQueue []*generator
@@ -97,13 +97,13 @@ func NewScheduler(cfg *config.Config, logC log.Logger) *Scheduler {
 	}
 }
 
-func (scheduler *Scheduler) poolWorker(numWorkers int, tasks chan Task) {
+func (scheduler *Scheduler) poolWorker(ctx context.Context, numWorkers int, tasks chan Task) {
 	for i := 0; i < numWorkers; i++ {
 		go func(workerID int) {
 			for task := range tasks {
 				scheduler.log.Debug().Int("worker", workerID).Msg("scheduler: starting task")
 
-				if err := task.DoWork(); err != nil {
+				if err := task.DoWork(ctx); err != nil {
 					scheduler.log.Error().Int("worker", workerID).Err(err).Msg("scheduler: error while executing task")
 				}
 
@@ -120,7 +120,7 @@ func (scheduler *Scheduler) RunScheduler(ctx context.Context) {
 	tasksWorker := make(chan Task, numWorkers)
 
 	// start worker pool
-	go scheduler.poolWorker(numWorkers, tasksWorker)
+	go scheduler.poolWorker(ctx, numWorkers, tasksWorker)
 
 	go func() {
 		for {

pkg/scheduler/scheduler_test.go

@@ -24,7 +24,7 @@ type task struct {
 
 var errInternal = errors.New("task: internal error")
 
-func (t *task) DoWork() error {
+func (t *task) DoWork(ctx context.Context) error {
 	if t.err {
 		return errInternal
 	}

pkg/storage/common/common.go

@@ -2,6 +2,7 @@ package storage
 
 import (
 	"bytes"
+	"context"
 	"encoding/json"
 	"errors"
 	"path"
@@ -876,9 +877,9 @@ func newDedupeTask(imgStore storageTypes.ImageStore, digest godigest.Digest, ded
 	return &dedupeTask{imgStore, digest, duplicateBlobs, dedupe, log}
 }
 
-func (dt *dedupeTask) DoWork() error {
+func (dt *dedupeTask) DoWork(ctx context.Context) error {
 	// run task
-	err := dt.imgStore.RunDedupeForDigest(dt.digest, dt.dedupe, dt.duplicateBlobs)
+	err := dt.imgStore.RunDedupeForDigest(dt.digest, dt.dedupe, dt.duplicateBlobs) //nolint: contextcheck
 	if err != nil {
 		// log it
 		dt.log.Error().Err(err).Str("digest", dt.digest.String()).Msg("rebuild dedupe: failed to rebuild digest")

pkg/storage/local/local.go

@@ -1860,8 +1860,8 @@ func newGCTask(imgStore *ImageStoreLocal, repo string) *gcTask {
 	return &gcTask{imgStore, repo}
 }
 
-func (gcT *gcTask) DoWork() error {
-	return gcT.imgStore.RunGCRepo(gcT.repo)
+func (gcT *gcTask) DoWork(ctx context.Context) error {
+	return gcT.imgStore.RunGCRepo(gcT.repo) //nolint: contextcheck
 }
 
 func (is *ImageStoreLocal) GetNextDigestWithBlobPaths(lastDigests []godigest.Digest,