tests: add api repo edit test

The pre-task validation in apiSnapshotsUpdate was incorrectly rejecting
PUT requests that set the Name to the snapshot's current name. This caused
a 409 response before creating a task, which broke the system test
SnapshotsAPITestCreateUpdate that expects a task to be created and then
fail inside the task.

The fix restores the 'b.Name != name' condition in the pre-task check so
that same-name updates pass through to the task, where the in-task
duplicate check will properly fail them (returning a failed task state
instead of a direct 409).

.github/workflows/ci.yml

@@ -155,7 +155,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        name: ["Debian 13/trixie", "Debian 12/bookworm", "Debian 11/bullseye", "Ubuntu 24.04", "Ubuntu 22.04", "Ubuntu 20.04"]
+        name: ["Debian 13/trixie", "Debian 12/bookworm", "Debian 11/bullseye", "Ubuntu 26.04", "Ubuntu 24.04", "Ubuntu 22.04", "Ubuntu 20.04"]
         arch: ["amd64", "i386" , "arm64" , "armhf"]
         include:
           - name: "Debian 13/trixie"
@@ -167,6 +167,9 @@ jobs:
           - name: "Debian 11/bullseye"
             suite: bullseye
             image: debian:bullseye-slim
+          - name: "Ubuntu 26.04"
+            suite: resolute
+            image: ubuntu:26.04
           - name: "Ubuntu 24.04"
             suite: noble
             image: ubuntu:24.04

CONTRIBUTING.md

@@ -16,7 +16,7 @@ Please report unacceptable behavior on [https://github.com/aptly-dev/aptly/discu
 ### List of Repositories
 
 * [aptly-dev/aptly](https://github.com/aptly-dev/aptly) - aptly source code, functional tests, man page
-* [apty-dev/aptly-dev.github.io](https://github.com/aptly-dev/aptly-dev.github.io) - aptly website (https://www.aptly.info/)
+* [aptly-dev/aptly-dev.github.io](https://github.com/aptly-dev/aptly-dev.github.io) - aptly website (https://www.aptly.info/)
 * [aptly-dev/aptly-fixture-db](https://github.com/aptly-dev/aptly-fixture-db) & [aptly-dev/aptly-fixture-pool](https://github.com/aptly-dev/aptly-fixture-pool) provide
   fixtures for aptly functional tests
 
@@ -137,7 +137,7 @@ make docker-unit-tests
 
 In order to run aptly system tests, enter the following:
 ```
-make docker-system-tests
+make docker-system-test
 ```
 
 #### Running golangci-lint

Makefile

@@ -241,4 +241,4 @@ clean:  ## remove local build and module cache
 	rm -f unit.out aptly.test VERSION docs/docs.go docs/swagger.json docs/swagger.yaml docs/swagger.conf
 	find system/ -type d -name __pycache__ -exec rm -rf {} \; 2>/dev/null || true
 
-.PHONY: help man prepare swagger version binaries build docker-release docker-system-tests docker-unit-test docker-lint docker-build docker-image docker-man docker-shell docker-serve clean releasetype dpkg serve flake8
+.PHONY: help man prepare swagger version binaries build docker-release docker-system-test docker-unit-test docker-lint docker-build docker-image docker-man docker-shell docker-serve clean releasetype dpkg serve flake8

api/gpg.go

@@ -54,7 +54,7 @@ type gpgDeleteKeyParams struct {
 // @Summary Add GPG Keys
 // @Description **Adds GPG keys to aptly keyring**
 // @Description
-// @Description Add GPG public keys for veryfing remote repositories for mirroring.
+// @Description Add GPG public keys for verifying remote repositories for mirroring.
 // @Description
 // @Description Keys can be added in two ways:
 // @Description * By providing the ASCII armord key in `GpgKeyArmor` (leave Keyserver and GpgKeyID empty)

api/mirror.go

@@ -216,9 +216,9 @@ func apiMirrorsDrop(c *gin.Context) {
 	name := c.Params.ByName("name")
 	force := c.Request.URL.Query().Get("force") == "1"
 
+	// Phase 1: Pre-task validation (shallow load for 404 check only)
 	collectionFactory := context.NewCollectionFactory()
 	mirrorCollection := collectionFactory.RemoteRepoCollection()
-	snapshotCollection := collectionFactory.SnapshotCollection()
 
 	repo, err := mirrorCollection.ByName(name)
 	if err != nil {
@@ -228,21 +228,34 @@ func apiMirrorsDrop(c *gin.Context) {
 
 	resources := []string{string(repo.Key())}
 	taskName := fmt.Sprintf("Delete mirror %s", name)
+
 	maybeRunTaskInBackground(c, taskName, resources, func(_ aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
-		err := repo.CheckLock()
+		// Phase 2: Inside task lock - create fresh collections
+		taskCollectionFactory := context.NewCollectionFactory()
+		taskMirrorCollection := taskCollectionFactory.RemoteRepoCollection()
+		taskSnapshotCollection := taskCollectionFactory.SnapshotCollection()
+
+		// Fresh load after lock acquired
+		repo, err := taskMirrorCollection.ByName(name)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to drop: %v", err)
+		}
+
+		err = repo.CheckLock()
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to drop: %v", err)
 		}
 
 		if !force {
-			snapshots := snapshotCollection.ByRemoteRepoSource(repo)
+			// Fresh checks with current collections
+			snapshots := taskSnapshotCollection.ByRemoteRepoSource(repo)
 
 			if len(snapshots) > 0 {
 				return &task.ProcessReturnValue{Code: http.StatusForbidden, Value: nil}, fmt.Errorf("won't delete mirror with snapshots, use 'force=1' to override")
 			}
 		}
 
-		err = mirrorCollection.Drop(repo)
+		err = taskMirrorCollection.Drop(repo)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to drop: %v", err)
 		}
@@ -497,7 +510,7 @@ func apiMirrorsEdit(c *gin.Context) {
 type mirrorUpdateParams struct {
 	// Change mirror name to `Name`
 	Name string `                 json:"Name"                   example:"mirror1"`
-	// Gpg keyring(s) for verifing Release file
+	// Gpg keyring(s) for verifying Release file
 	Keyrings []string `           json:"Keyrings"               example:"trustedkeys.gpg"`
 	// Set "true" to ignore checksum errors
 	IgnoreChecksums bool `        json:"IgnoreChecksums"`
@@ -535,7 +548,8 @@ func apiMirrorsUpdate(c *gin.Context) {
 	collectionFactory := context.NewCollectionFactory()
 	collection := collectionFactory.RemoteRepoCollection()
 
-	remote, err = collection.ByName(c.Params.ByName("name"))
+	name := c.Params.ByName("name")
+	remote, err = collection.ByName(name)
 	if err != nil {
 		AbortWithJSONError(c, 404, err)
 		return
@@ -550,6 +564,7 @@ func apiMirrorsUpdate(c *gin.Context) {
 		return
 	}
 
+	// Pre-task validation of new name if provided
 	if b.Name != remote.Name {
 		_, err = collection.ByName(b.Name)
 		if err == nil {
@@ -566,9 +581,26 @@ func apiMirrorsUpdate(c *gin.Context) {
 
 	resources := []string{string(remote.Key())}
 	maybeRunTaskInBackground(c, "Update mirror "+b.Name, resources, func(out aptly.Progress, detail *task.Detail) (*task.ProcessReturnValue, error) {
+		// Phase 2: Inside task lock - create fresh factory
+		taskCollectionFactory := context.NewCollectionFactory()
+		taskCollection := taskCollectionFactory.RemoteRepoCollection()
+
+		// Fresh load after lock acquired (use captured `name` variable, not gin context)
+		remote, err := taskCollection.ByName(name)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to update: %s", err)
+		}
+
+		// Fresh rename check inside lock (if renaming)
+		if b.Name != remote.Name {
+			_, err := taskCollection.ByName(b.Name)
+			if err == nil {
+				return &task.ProcessReturnValue{Code: http.StatusConflict, Value: nil}, fmt.Errorf("unable to rename: mirror %s already exists", b.Name)
+			}
+		}
 
 		downloader := context.NewDownloader(out)
-		err := remote.Fetch(downloader, verifier, b.IgnoreSignatures)
+		err = remote.Fetch(downloader, verifier, b.IgnoreSignatures)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to update: %s", err)
 		}
@@ -780,8 +812,8 @@ func apiMirrorsUpdate(c *gin.Context) {
 		}
 
 		log.Info().Msgf("%s: Finalizing download...", b.Name)
-		_ = remote.FinalizeDownload(collectionFactory, out)
-		err = collectionFactory.RemoteRepoCollection().Update(remote)
+		_ = remote.FinalizeDownload(taskCollectionFactory, out)
+		err = taskCollection.Update(remote)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to update: %s", err)
 		}

api/publish.go

@@ -2,6 +2,7 @@ package api
 
 import (
 	"fmt"
+	"log"
 	"net/http"
 	"strings"
 
@@ -124,7 +125,7 @@ func apiPublishList(c *gin.Context) {
 // @Description See also: `aptly publish show`
 // @Tags Publish
 // @Produce json
-// @Param prefix path string true "publishing prefix, use `:.` instead of `.` because it is ambigious in URLs"
+// @Param prefix path string true "publishing prefix, use `:.` instead of `.` because it is ambiguous in URLs"
 // @Param distribution path string true "distribution name"
 // @Success 200 {object} deb.PublishedRepo
 // @Failure 404 {object} Error "Published repository not found"
@@ -298,11 +299,25 @@ func apiPublishRepoOrSnapshot(c *gin.Context) {
 		multiDist = *b.MultiDist
 	}
 
-	collection := collectionFactory.PublishedRepoCollection()
+	// Pre-register the published repo key in resources so that concurrent
+	// POST requests for the same prefix/distribution are serialized by the
+	// task queue rather than racing on CheckDuplicate + Add.
+	if b.Distribution != "" {
+		storagePrefix := prefix
+		if storage != "" {
+			storagePrefix = storage + ":" + prefix
+		}
+		resources = append(resources, "U"+storagePrefix+">>"+b.Distribution)
+	} else {
+		log.Printf("distribution not specified for publish to prefix '%s' - unable to lock ", prefix)
+	}
 
 	taskName := fmt.Sprintf("Publish %s repository %s/%s with components \"%s\" and sources \"%s\"",
 		b.SourceKind, param, b.Distribution, strings.Join(components, `", "`), strings.Join(names, `", "`))
 	maybeRunTaskInBackground(c, taskName, resources, func(out aptly.Progress, detail *task.Detail) (*task.ProcessReturnValue, error) {
+		taskCollectionFactory := context.NewCollectionFactory()
+		taskCollection := taskCollectionFactory.PublishedRepoCollection()
+
 		taskDetail := task.PublishDetail{
 			Detail: detail,
 		}
@@ -314,10 +329,10 @@ func apiPublishRepoOrSnapshot(c *gin.Context) {
 		for _, source := range sources {
 			switch s := source.(type) {
 			case *deb.Snapshot:
-				snapshotCollection := collectionFactory.SnapshotCollection()
+				snapshotCollection := taskCollectionFactory.SnapshotCollection()
 				err = snapshotCollection.LoadComplete(s)
 			case *deb.LocalRepo:
-				localCollection := collectionFactory.LocalRepoCollection()
+				localCollection := taskCollectionFactory.LocalRepoCollection()
 				err = localCollection.LoadComplete(s)
 			default:
 				err = fmt.Errorf("unexpected type for source: %T", source)
@@ -327,13 +342,11 @@ func apiPublishRepoOrSnapshot(c *gin.Context) {
 			}
 		}
 
-		published, err := deb.NewPublishedRepo(storage, prefix, b.Distribution, b.Architectures, components, sources, collectionFactory, multiDist)
+		published, err := deb.NewPublishedRepo(storage, prefix, b.Distribution, b.Architectures, components, sources, taskCollectionFactory, multiDist)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to publish: %s", err)
 		}
 
-		resources = append(resources, string(published.Key()))
-
 		if b.Origin != "" {
 			published.Origin = b.Origin
 		}
@@ -367,18 +380,18 @@ func apiPublishRepoOrSnapshot(c *gin.Context) {
 			published.Version = b.Version
 		}
 
-		duplicate := collection.CheckDuplicate(published)
+		duplicate := taskCollection.CheckDuplicate(published)
 		if duplicate != nil {
-			_ = collectionFactory.PublishedRepoCollection().LoadComplete(duplicate, collectionFactory)
+			_ = taskCollectionFactory.PublishedRepoCollection().LoadComplete(duplicate, taskCollectionFactory)
 			return &task.ProcessReturnValue{Code: http.StatusBadRequest, Value: nil}, fmt.Errorf("prefix/distribution already used by another published repo: %s", duplicate)
 		}
 
-		err = published.Publish(context.PackagePool(), context, collectionFactory, signer, publishOutput, b.ForceOverwrite, context.SkelPath())
+		err = published.Publish(context.PackagePool(), context, taskCollectionFactory, signer, publishOutput, b.ForceOverwrite, context.SkelPath())
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to publish: %s", err)
 		}
 
-		err = collection.Add(published)
+		err = taskCollection.Add(published)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to save to DB: %s", err)
 		}
@@ -458,6 +471,7 @@ func apiPublishUpdateSwitch(c *gin.Context) {
 	collectionFactory := context.NewCollectionFactory()
 	collection := collectionFactory.PublishedRepoCollection()
 	snapshotCollection := collectionFactory.SnapshotCollection()
+	localRepoCollection := collectionFactory.LocalRepoCollection()
 
 	published, err := collection.ByStoragePrefixDistribution(storage, prefix, distribution)
 	if err != nil {
@@ -465,64 +479,78 @@ func apiPublishUpdateSwitch(c *gin.Context) {
 		return
 	}
 
+	resources := []string{string(published.Key())}
+
 	if published.SourceKind == deb.SourceLocalRepo {
 		if len(b.Snapshots) > 0 {
 			AbortWithJSONError(c, http.StatusBadRequest, fmt.Errorf("snapshots shouldn't be given when updating local repo"))
 			return
 		}
-	} else if published.SourceKind == deb.SourceSnapshot {
-		for _, snapshotInfo := range b.Snapshots {
-			_, err2 := snapshotCollection.ByName(snapshotInfo.Name)
+		for _, uuid := range published.Sources {
+			repo, err2 := localRepoCollection.ByUUID(uuid)
 			if err2 != nil {
 				AbortWithJSONError(c, http.StatusNotFound, err2)
 				return
 			}
+			resources = append(resources, string(repo.Key()))
+		}
+	} else if published.SourceKind == deb.SourceSnapshot {
+		for _, snapshotInfo := range b.Snapshots {
+			snapshot, err2 := snapshotCollection.ByName(snapshotInfo.Name)
+			if err2 != nil {
+				AbortWithJSONError(c, http.StatusNotFound, err2)
+				return
+			}
+			resources = append(resources, string(snapshot.ResourceKey()))
 		}
 	} else {
 		AbortWithJSONError(c, http.StatusInternalServerError, fmt.Errorf("unknown published repository type"))
 		return
 	}
 
-	if b.SkipContents != nil {
-		published.SkipContents = *b.SkipContents
-	}
-
-	if b.SkipBz2 != nil {
-		published.SkipBz2 = *b.SkipBz2
-	}
-
-	if b.AcquireByHash != nil {
-		published.AcquireByHash = *b.AcquireByHash
-	}
-
-	if b.SignedBy != nil {
-		published.SignedBy = *b.SignedBy
-	}
-
-	if b.MultiDist != nil {
-		published.MultiDist = *b.MultiDist
-	}
-
-	if b.Label != nil {
-		published.Label = *b.Label
-	}
-
-	if b.Origin != nil {
-		published.Origin = *b.Origin
-	}
-
-	if b.Version != nil {
-		published.Version = *b.Version
-	}
-
-	resources := []string{string(published.Key())}
+	// Field mutations and fresh DB load are deferred to inside the task so
+	// they always operate on a consistent state after the lock is held.
 	taskName := fmt.Sprintf("Update published %s repository %s/%s", published.SourceKind, published.StoragePrefix(), published.Distribution)
 	maybeRunTaskInBackground(c, taskName, resources, func(out aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
-		err = collection.LoadComplete(published, collectionFactory)
+		taskCollectionFactory := context.NewCollectionFactory()
+		taskCollection := taskCollectionFactory.PublishedRepoCollection()
+
+		published, err := taskCollection.ByStoragePrefixDistribution(storage, prefix, distribution)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to update: %s", err)
 		}
 
+		err = taskCollection.LoadComplete(published, taskCollectionFactory)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to update: %s", err)
+		}
+
+		// Apply field mutations on the freshly loaded object.
+		if b.SkipContents != nil {
+			published.SkipContents = *b.SkipContents
+		}
+		if b.SkipBz2 != nil {
+			published.SkipBz2 = *b.SkipBz2
+		}
+		if b.AcquireByHash != nil {
+			published.AcquireByHash = *b.AcquireByHash
+		}
+		if b.SignedBy != nil {
+			published.SignedBy = *b.SignedBy
+		}
+		if b.MultiDist != nil {
+			published.MultiDist = *b.MultiDist
+		}
+		if b.Label != nil {
+			published.Label = *b.Label
+		}
+		if b.Origin != nil {
+			published.Origin = *b.Origin
+		}
+		if b.Version != nil {
+			published.Version = *b.Version
+		}
+
 		revision := published.ObtainRevision()
 		sources := revision.Sources
 
@@ -534,17 +562,17 @@ func apiPublishUpdateSwitch(c *gin.Context) {
 			}
 		}
 
-		result, err := published.Update(collectionFactory, out)
+		result, err := published.Update(taskCollectionFactory, out)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to update: %s", err)
 		}
 
-		err = published.Publish(context.PackagePool(), context, collectionFactory, signer, out, b.ForceOverwrite, context.SkelPath())
+		err = published.Publish(context.PackagePool(), context, taskCollectionFactory, signer, out, b.ForceOverwrite, context.SkelPath())
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to update: %s", err)
 		}
 
-		err = collection.Update(published)
+		err = taskCollection.Update(published)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to save to DB: %s", err)
 		}
@@ -552,7 +580,7 @@ func apiPublishUpdateSwitch(c *gin.Context) {
 		if b.SkipCleanup == nil || !*b.SkipCleanup {
 			cleanComponents := make([]string, 0, len(result.UpdatedSources)+len(result.RemovedSources))
 			cleanComponents = append(append(cleanComponents, result.UpdatedComponents()...), result.RemovedComponents()...)
-			err = collection.CleanupPrefixComponentFiles(context, published, cleanComponents, collectionFactory, out)
+			err = taskCollection.CleanupPrefixComponentFiles(context, published, cleanComponents, taskCollectionFactory, out)
 			if err != nil {
 				return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to update: %s", err)
 			}
@@ -602,8 +630,11 @@ func apiPublishDrop(c *gin.Context) {
 	resources := []string{string(published.Key())}
 	taskName := fmt.Sprintf("Delete published %s repository %s/%s", published.SourceKind, published.StoragePrefix(), published.Distribution)
 	maybeRunTaskInBackground(c, taskName, resources, func(out aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
-		err := collection.Remove(context, storage, prefix, distribution,
-			collectionFactory, out, force, skipCleanup)
+		taskCollectionFactory := context.NewCollectionFactory()
+		taskCollection := taskCollectionFactory.PublishedRepoCollection()
+
+		err := taskCollection.Remove(context, storage, prefix, distribution,
+			taskCollectionFactory, out, force, skipCleanup)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to drop: %s", err)
 		}
@@ -639,43 +670,52 @@ func apiPublishAddSource(c *gin.Context) {
 	storage, prefix := deb.ParsePrefix(param)
 	distribution := slashEscape(c.Params.ByName("distribution"))
 
+	if c.Bind(&b) != nil {
+		return
+	}
+
 	collectionFactory := context.NewCollectionFactory()
 	collection := collectionFactory.PublishedRepoCollection()
 
+	// Load shallowly (no LoadComplete) to verify existence and obtain the
+	// resource key and task name.  The actual mutation is performed inside
+	// the task on a freshly loaded copy to prevent lost-update races.
 	published, err := collection.ByStoragePrefixDistribution(storage, prefix, distribution)
 	if err != nil {
 		AbortWithJSONError(c, http.StatusNotFound, fmt.Errorf("unable to create: %s", err))
 		return
 	}
 
-	err = collection.LoadComplete(published, collectionFactory)
-	if err != nil {
-		AbortWithJSONError(c, http.StatusInternalServerError, fmt.Errorf("unable to create: %s", err))
-		return
-	}
-
-	if c.Bind(&b) != nil {
-		return
-	}
-
-	revision := published.ObtainRevision()
-	sources := revision.Sources
-
-	component := b.Component
-	name := b.Name
-
-	_, exists := sources[component]
-	if exists {
-		AbortWithJSONError(c, http.StatusBadRequest, fmt.Errorf("unable to create: Component '%s' already exists", component))
-		return
-	}
-
-	sources[component] = name
-
 	resources := []string{string(published.Key())}
 	taskName := fmt.Sprintf("Update published %s repository %s/%s", published.SourceKind, published.StoragePrefix(), published.Distribution)
 	maybeRunTaskInBackground(c, taskName, resources, func(_ aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
-		err = collection.Update(published)
+		taskCollectionFactory := context.NewCollectionFactory()
+		taskCollection := taskCollectionFactory.PublishedRepoCollection()
+
+		published, err := taskCollection.ByStoragePrefixDistribution(storage, prefix, distribution)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusNotFound, Value: nil}, fmt.Errorf("unable to create: %s", err)
+		}
+
+		err = taskCollection.LoadComplete(published, taskCollectionFactory)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to create: %s", err)
+		}
+
+		revision := published.ObtainRevision()
+		sources := revision.Sources
+
+		component := b.Component
+		name := b.Name
+
+		_, exists := sources[component]
+		if exists {
+			return &task.ProcessReturnValue{Code: http.StatusBadRequest, Value: nil}, fmt.Errorf("unable to create: Component '%s' already exists", component)
+		}
+
+		sources[component] = name
+
+		err = taskCollection.Update(published)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to save to DB: %s", err)
 		}
@@ -757,39 +797,48 @@ func apiPublishSetSources(c *gin.Context) {
 	storage, prefix := deb.ParsePrefix(param)
 	distribution := slashEscape(c.Params.ByName("distribution"))
 
+	if c.Bind(&b) != nil {
+		return
+	}
+
 	collectionFactory := context.NewCollectionFactory()
 	collection := collectionFactory.PublishedRepoCollection()
 
+	// Load shallowly for 404 check, resource key, and task name.
+	// Full load and mutation happen inside the task.
 	published, err := collection.ByStoragePrefixDistribution(storage, prefix, distribution)
 	if err != nil {
 		AbortWithJSONError(c, http.StatusNotFound, fmt.Errorf("unable to update: %s", err))
 		return
 	}
 
-	err = collection.LoadComplete(published, collectionFactory)
-	if err != nil {
-		AbortWithJSONError(c, http.StatusInternalServerError, fmt.Errorf("unable to update: %s", err))
-		return
-	}
-
-	if c.Bind(&b) != nil {
-		return
-	}
-
-	revision := published.ObtainRevision()
-	sources := make(map[string]string, len(b))
-	revision.Sources = sources
-
-	for _, source := range b {
-		component := source.Component
-		name := source.Name
-		sources[component] = name
-	}
-
 	resources := []string{string(published.Key())}
 	taskName := fmt.Sprintf("Update published %s repository %s/%s", published.SourceKind, published.StoragePrefix(), published.Distribution)
 	maybeRunTaskInBackground(c, taskName, resources, func(_ aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
-		err = collection.Update(published)
+		taskCollectionFactory := context.NewCollectionFactory()
+		taskCollection := taskCollectionFactory.PublishedRepoCollection()
+
+		published, err := taskCollection.ByStoragePrefixDistribution(storage, prefix, distribution)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusNotFound, Value: nil}, fmt.Errorf("unable to update: %s", err)
+		}
+
+		err = taskCollection.LoadComplete(published, taskCollectionFactory)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to update: %s", err)
+		}
+
+		revision := published.ObtainRevision()
+		sources := make(map[string]string, len(b))
+		revision.Sources = sources
+
+		for _, source := range b {
+			component := source.Component
+			name := source.Name
+			sources[component] = name
+		}
+
+		err = taskCollection.Update(published)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to save to DB: %s", err)
 		}
@@ -822,24 +871,33 @@ func apiPublishDropChanges(c *gin.Context) {
 	collectionFactory := context.NewCollectionFactory()
 	collection := collectionFactory.PublishedRepoCollection()
 
+	// Load shallowly for 404 check, resource key, and task name.
+	// Full load and DropRevision happen inside the task.
 	published, err := collection.ByStoragePrefixDistribution(storage, prefix, distribution)
 	if err != nil {
 		AbortWithJSONError(c, http.StatusNotFound, fmt.Errorf("unable to delete: %s", err))
 		return
 	}
 
-	err = collection.LoadComplete(published, collectionFactory)
-	if err != nil {
-		AbortWithJSONError(c, http.StatusInternalServerError, fmt.Errorf("unable to delete: %s", err))
-		return
-	}
-
-	published.DropRevision()
-
 	resources := []string{string(published.Key())}
 	taskName := fmt.Sprintf("Update published %s repository %s/%s", published.SourceKind, published.StoragePrefix(), published.Distribution)
 	maybeRunTaskInBackground(c, taskName, resources, func(_ aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
-		err = collection.Update(published)
+		taskCollectionFactory := context.NewCollectionFactory()
+		taskCollection := taskCollectionFactory.PublishedRepoCollection()
+
+		published, err := taskCollection.ByStoragePrefixDistribution(storage, prefix, distribution)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusNotFound, Value: nil}, fmt.Errorf("unable to delete: %s", err)
+		}
+
+		err = taskCollection.LoadComplete(published, taskCollectionFactory)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to delete: %s", err)
+		}
+
+		published.DropRevision()
+
+		err = taskCollection.Update(published)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to save to DB: %s", err)
 		}
@@ -875,51 +933,58 @@ func apiPublishUpdateSource(c *gin.Context) {
 	param := slashEscape(c.Params.ByName("prefix"))
 	storage, prefix := deb.ParsePrefix(param)
 	distribution := slashEscape(c.Params.ByName("distribution"))
-	component := slashEscape(c.Params.ByName("component"))
+	urlComponent := slashEscape(c.Params.ByName("component"))
+
+	// Default component to the URL path segment; the body may rename it.
+	b.Component = urlComponent
+	if c.Bind(&b) != nil {
+		return
+	}
 
 	collectionFactory := context.NewCollectionFactory()
 	collection := collectionFactory.PublishedRepoCollection()
 
+	// Load shallowly for 404 check, resource key, and task name.
+	// Full load and mutation happen inside the task.
 	published, err := collection.ByStoragePrefixDistribution(storage, prefix, distribution)
 	if err != nil {
 		AbortWithJSONError(c, http.StatusNotFound, fmt.Errorf("unable to update: %s", err))
 		return
 	}
 
-	err = collection.LoadComplete(published, collectionFactory)
-	if err != nil {
-		AbortWithJSONError(c, http.StatusInternalServerError, fmt.Errorf("unable to update: %s", err))
-		return
-	}
-
-	revision := published.ObtainRevision()
-	sources := revision.Sources
-
-	_, exists := sources[component]
-	if !exists {
-		AbortWithJSONError(c, http.StatusNotFound, fmt.Errorf("unable to update: Component '%s' does not exist", component))
-		return
-	}
-
-	b.Component = component
-	b.Name = revision.Sources[component]
-
-	if c.Bind(&b) != nil {
-		return
-	}
-
-	if b.Component != component {
-		delete(sources, component)
-	}
-
-	component = b.Component
-	name := b.Name
-	sources[component] = name
-
 	resources := []string{string(published.Key())}
 	taskName := fmt.Sprintf("Update published %s repository %s/%s", published.SourceKind, published.StoragePrefix(), published.Distribution)
 	maybeRunTaskInBackground(c, taskName, resources, func(_ aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
-		err = collection.Update(published)
+		taskCollectionFactory := context.NewCollectionFactory()
+		taskCollection := taskCollectionFactory.PublishedRepoCollection()
+
+		published, err := taskCollection.ByStoragePrefixDistribution(storage, prefix, distribution)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusNotFound, Value: nil}, fmt.Errorf("unable to update: %s", err)
+		}
+
+		err = taskCollection.LoadComplete(published, taskCollectionFactory)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to update: %s", err)
+		}
+
+		revision := published.ObtainRevision()
+		sources := revision.Sources
+
+		_, exists := sources[urlComponent]
+		if !exists {
+			return &task.ProcessReturnValue{Code: http.StatusNotFound, Value: nil}, fmt.Errorf("unable to update: Component '%s' does not exist", urlComponent)
+		}
+
+		if b.Component != urlComponent {
+			delete(sources, urlComponent)
+		}
+
+		newComponent := b.Component
+		name := b.Name
+		sources[newComponent] = name
+
+		err = taskCollection.Update(published)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to save to DB: %s", err)
 		}
@@ -956,33 +1021,41 @@ func apiPublishRemoveSource(c *gin.Context) {
 	collectionFactory := context.NewCollectionFactory()
 	collection := collectionFactory.PublishedRepoCollection()
 
+	// Load shallowly for 404 check, resource key, and task name.
+	// Full load and mutation happen inside the task.
 	published, err := collection.ByStoragePrefixDistribution(storage, prefix, distribution)
 	if err != nil {
 		AbortWithJSONError(c, http.StatusNotFound, fmt.Errorf("unable to delete: %s", err))
 		return
 	}
 
-	err = collection.LoadComplete(published, collectionFactory)
-	if err != nil {
-		AbortWithJSONError(c, http.StatusInternalServerError, fmt.Errorf("unable to delete: %s", err))
-		return
-	}
-
-	revision := published.ObtainRevision()
-	sources := revision.Sources
-
-	_, exists := sources[component]
-	if !exists {
-		AbortWithJSONError(c, http.StatusNotFound, fmt.Errorf("unable to delete: Component '%s' does not exist", component))
-		return
-	}
-
-	delete(sources, component)
-
 	resources := []string{string(published.Key())}
 	taskName := fmt.Sprintf("Update published %s repository %s/%s", published.SourceKind, published.StoragePrefix(), published.Distribution)
 	maybeRunTaskInBackground(c, taskName, resources, func(_ aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
-		err = collection.Update(published)
+		taskCollectionFactory := context.NewCollectionFactory()
+		taskCollection := taskCollectionFactory.PublishedRepoCollection()
+
+		published, err := taskCollection.ByStoragePrefixDistribution(storage, prefix, distribution)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusNotFound, Value: nil}, fmt.Errorf("unable to delete: %s", err)
+		}
+
+		err = taskCollection.LoadComplete(published, taskCollectionFactory)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to delete: %s", err)
+		}
+
+		revision := published.ObtainRevision()
+		sources := revision.Sources
+
+		_, exists := sources[component]
+		if !exists {
+			return &task.ProcessReturnValue{Code: http.StatusNotFound, Value: nil}, fmt.Errorf("unable to delete: Component '%s' does not exist", component)
+		}
+
+		delete(sources, component)
+
+		err = taskCollection.Update(published)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to save to DB: %s", err)
 		}
@@ -1054,64 +1127,94 @@ func apiPublishUpdate(c *gin.Context) {
 	collectionFactory := context.NewCollectionFactory()
 	collection := collectionFactory.PublishedRepoCollection()
 
+	// Load shallowly for 404 check, resource key, and task name.
+	// Full load and field mutations happen inside the task.
 	published, err := collection.ByStoragePrefixDistribution(storage, prefix, distribution)
 	if err != nil {
 		AbortWithJSONError(c, http.StatusNotFound, fmt.Errorf("unable to update: %s", err))
 		return
 	}
 
-	err = collection.LoadComplete(published, collectionFactory)
-	if err != nil {
-		AbortWithJSONError(c, http.StatusInternalServerError, fmt.Errorf("unable to update: %s", err))
-		return
-	}
-
-	if b.SkipContents != nil {
-		published.SkipContents = *b.SkipContents
-	}
-
-	if b.SkipBz2 != nil {
-		published.SkipBz2 = *b.SkipBz2
-	}
-
-	if b.AcquireByHash != nil {
-		published.AcquireByHash = *b.AcquireByHash
-	}
-
-	if b.SignedBy != nil {
-		published.SignedBy = *b.SignedBy
-	}
-
-	if b.MultiDist != nil {
-		published.MultiDist = *b.MultiDist
-	}
-
-	if b.Label != nil {
-		published.Label = *b.Label
-	}
-
-	if b.Origin != nil {
-		published.Origin = *b.Origin
-	}
-
-	if b.Version != nil {
-		published.Version = *b.Version
-	}
-
 	resources := []string{string(published.Key())}
+
+	// Lock source repos / snapshots the same way apiPublishUpdateSwitch does,
+	// because published.Update() reads from them and concurrent modification
+	// would produce an inconsistent view.
+	snapshotCollection := collectionFactory.SnapshotCollection()
+	localRepoCollection := collectionFactory.LocalRepoCollection()
+
+	if published.SourceKind == deb.SourceLocalRepo {
+		for _, uuid := range published.Sources {
+			repo, err2 := localRepoCollection.ByUUID(uuid)
+			if err2 != nil {
+				AbortWithJSONError(c, http.StatusNotFound, err2)
+				return
+			}
+			resources = append(resources, string(repo.Key()))
+		}
+	} else if published.SourceKind == deb.SourceSnapshot {
+		for _, uuid := range published.Sources {
+			snapshot, err2 := snapshotCollection.ByUUID(uuid)
+			if err2 != nil {
+				AbortWithJSONError(c, http.StatusNotFound, err2)
+				return
+			}
+			resources = append(resources, string(snapshot.ResourceKey()))
+		}
+	}
+
 	taskName := fmt.Sprintf("Update published %s repository %s/%s", published.SourceKind, published.StoragePrefix(), published.Distribution)
 	maybeRunTaskInBackground(c, taskName, resources, func(out aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
-		result, err := published.Update(collectionFactory, out)
+		taskCollectionFactory := context.NewCollectionFactory()
+		taskCollection := taskCollectionFactory.PublishedRepoCollection()
+
+		published, err := taskCollection.ByStoragePrefixDistribution(storage, prefix, distribution)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to update: %s", err)
 		}
 
-		err = published.Publish(context.PackagePool(), context, collectionFactory, signer, out, b.ForceOverwrite, context.SkelPath())
+		err = taskCollection.LoadComplete(published, taskCollectionFactory)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to update: %s", err)
 		}
 
-		err = collection.Update(published)
+		// Apply field mutations on the freshly loaded object.
+		if b.SkipContents != nil {
+			published.SkipContents = *b.SkipContents
+		}
+		if b.SkipBz2 != nil {
+			published.SkipBz2 = *b.SkipBz2
+		}
+		if b.AcquireByHash != nil {
+			published.AcquireByHash = *b.AcquireByHash
+		}
+		if b.SignedBy != nil {
+			published.SignedBy = *b.SignedBy
+		}
+		if b.MultiDist != nil {
+			published.MultiDist = *b.MultiDist
+		}
+		if b.Label != nil {
+			published.Label = *b.Label
+		}
+		if b.Origin != nil {
+			published.Origin = *b.Origin
+		}
+		if b.Version != nil {
+			published.Version = *b.Version
+		}
+
+		result, err := published.Update(taskCollectionFactory, out)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to update: %s", err)
+		}
+
+		err = published.Publish(context.PackagePool(), context, taskCollectionFactory, signer, out, b.ForceOverwrite, context.SkelPath())
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to update: %s", err)
+		}
+
+		err = taskCollection.Update(published)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to save to DB: %s", err)
 		}
@@ -1119,7 +1222,7 @@ func apiPublishUpdate(c *gin.Context) {
 		if b.SkipCleanup == nil || !*b.SkipCleanup {
 			cleanComponents := make([]string, 0, len(result.UpdatedSources)+len(result.RemovedSources))
 			cleanComponents = append(append(cleanComponents, result.UpdatedComponents()...), result.RemovedComponents()...)
-			err = collection.CleanupPrefixComponentFiles(context, published, cleanComponents, collectionFactory, out)
+			err = taskCollection.CleanupPrefixComponentFiles(context, published, cleanComponents, taskCollectionFactory, out)
 			if err != nil {
 				return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to update: %s", err)
 			}

api/repos.go

@@ -102,7 +102,7 @@ type repoCreateParams struct {
 	DefaultDistribution string `     json:"DefaultDistribution"  example:"stable"`
 	// Default component when publishing from this local repo
 	DefaultComponent string `        json:"DefaultComponent"     example:"main"`
-	// Snapshot name to create repoitory from (optional)
+	// Snapshot name to create repository from (optional)
 	FromSnapshot string `            json:"FromSnapshot"         example:""`
 }
 
@@ -131,46 +131,69 @@ func apiReposCreate(c *gin.Context) {
 		return
 	}
 
-	repo := deb.NewLocalRepo(b.Name, b.Comment)
-	repo.DefaultComponent = b.DefaultComponent
-	repo.DefaultDistribution = b.DefaultDistribution
-
+	// Handler: Pre-task validations (shallow)
 	collectionFactory := context.NewCollectionFactory()
 
 	if b.FromSnapshot != "" {
-		var snapshot *deb.Snapshot
-
 		snapshotCollection := collectionFactory.SnapshotCollection()
 
-		snapshot, err := snapshotCollection.ByName(b.FromSnapshot)
+		_, err := snapshotCollection.ByName(b.FromSnapshot)
 		if err != nil {
 			AbortWithJSONError(c, http.StatusNotFound, fmt.Errorf("source snapshot not found: %s", err))
 			return
 		}
+		// Just verify it exists - don't load here
+	}
 
-		err = snapshotCollection.LoadComplete(snapshot)
-		if err != nil {
-			AbortWithJSONError(c, http.StatusInternalServerError, fmt.Errorf("unable to load source snapshot: %s", err))
-			return
+	// Use generated key resource for repo being created
+	resources := []string{"LocalRepo:" + b.Name}
+	if b.FromSnapshot != "" {
+		resources = append(resources, "Snapshot:"+b.FromSnapshot)
+	}
+
+	taskName := fmt.Sprintf("Create repository %s", b.Name)
+
+	maybeRunTaskInBackground(c, taskName, resources, func(_ aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
+		// Task: Create fresh collection and check/create ATOMIC inside task
+		taskCollectionFactory := context.NewCollectionFactory()
+		taskCollection := taskCollectionFactory.LocalRepoCollection()
+
+		// Check duplicate inside lock
+		if _, err := taskCollection.ByName(b.Name); err == nil {
+			return &task.ProcessReturnValue{Code: http.StatusConflict, Value: nil}, 
+				fmt.Errorf("local repo with name %s already exists", b.Name)
 		}
 
-		repo.UpdateRefList(snapshot.RefList())
-	}
+		// Create repo
+		repo := deb.NewLocalRepo(b.Name, b.Comment)
+		repo.DefaultComponent = b.DefaultComponent
+		repo.DefaultDistribution = b.DefaultDistribution
 
-	localRepoCollection := collectionFactory.LocalRepoCollection()
+		if b.FromSnapshot != "" {
+			snapshotCollection := taskCollectionFactory.SnapshotCollection()
 
-	if _, err := localRepoCollection.ByName(b.Name); err == nil {
-		AbortWithJSONError(c, http.StatusConflict, fmt.Errorf("local repo with name %s already exists", b.Name))
-		return
-	}
+			snapshot, err := snapshotCollection.ByName(b.FromSnapshot)
+			if err != nil {
+				return &task.ProcessReturnValue{Code: http.StatusNotFound, Value: nil}, 
+					fmt.Errorf("source snapshot not found: %s", err)
+			}
 
-	err := localRepoCollection.Add(repo)
-	if err != nil {
-		AbortWithJSONError(c, http.StatusInternalServerError, err)
-		return
-	}
+			err = snapshotCollection.LoadComplete(snapshot)
+			if err != nil {
+				return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, 
+					fmt.Errorf("unable to load source snapshot: %s", err)
+			}
 
-	c.JSON(http.StatusCreated, repo)
+			repo.UpdateRefList(snapshot.RefList())
+		}
+
+		err := taskCollection.Add(repo)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
+		}
+
+		return &task.ProcessReturnValue{Code: http.StatusCreated, Value: repo}, nil
+	})
 }
 
 type reposEditParams struct {
@@ -180,7 +203,7 @@ type reposEditParams struct {
 	Comment *string `                    json:"Comment"              example:"example repo"`
 	// Change Default Distribution for publishing
 	DefaultDistribution *string `        json:"DefaultDistribution"  example:""`
-	// Change Devault Component for publishing
+	// Change Default Component for publishing
 	DefaultComponent *string `        json:"DefaultComponent"     example:""`
 }
 
@@ -201,6 +224,8 @@ func apiReposEdit(c *gin.Context) {
 		return
 	}
 
+	// Load shallowly for 404 check and resource key.
+	// Mutation and duplicate check happen inside the task for atomicity.
 	collectionFactory := context.NewCollectionFactory()
 	collection := collectionFactory.LocalRepoCollection()
 
@@ -211,32 +236,47 @@ func apiReposEdit(c *gin.Context) {
 		return
 	}
 
-	if b.Name != nil && *b.Name != name {
-		_, err := collection.ByName(*b.Name)
-		if err == nil {
-			// already exists
-			AbortWithJSONError(c, 404, fmt.Errorf("local repo with name %q already exists", *b.Name))
-			return
+	resources := []string{string(repo.Key())}
+	taskName := fmt.Sprintf("Edit repository %s", name)
+
+	maybeRunTaskInBackground(c, taskName, resources, func(_ aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
+		// Task: Create fresh collection inside task after lock
+		taskCollectionFactory := context.NewCollectionFactory()
+		taskCollection := taskCollectionFactory.LocalRepoCollection()
+
+		// Fresh load after lock acquired
+		repo, err := taskCollection.ByName(name)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusNotFound, Value: nil}, err
 		}
-		repo.Name = *b.Name
-	}
-	if b.Comment != nil {
-		repo.Comment = *b.Comment
-	}
-	if b.DefaultDistribution != nil {
-		repo.DefaultDistribution = *b.DefaultDistribution
-	}
-	if b.DefaultComponent != nil {
-		repo.DefaultComponent = *b.DefaultComponent
-	}
 
-	err = collection.Update(repo)
-	if err != nil {
-		AbortWithJSONError(c, 500, err)
-		return
-	}
+		// Check and update ATOMIC (inside lock)
+		if b.Name != nil && *b.Name != name {
+			_, err := taskCollection.ByName(*b.Name)
+			if err == nil {
+				// already exists
+				return &task.ProcessReturnValue{Code: http.StatusConflict, Value: nil}, 
+					fmt.Errorf("local repo with name %q already exists", *b.Name)
+			}
+			repo.Name = *b.Name
+		}
+		if b.Comment != nil {
+			repo.Comment = *b.Comment
+		}
+		if b.DefaultDistribution != nil {
+			repo.DefaultDistribution = *b.DefaultDistribution
+		}
+		if b.DefaultComponent != nil {
+			repo.DefaultComponent = *b.DefaultComponent
+		}
 
-	c.JSON(200, repo)
+		err = taskCollection.Update(repo)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
+		}
+
+		return &task.ProcessReturnValue{Code: http.StatusOK, Value: repo}, nil
+	})
 }
 
 // GET /api/repos/:name
@@ -278,10 +318,10 @@ func apiReposDrop(c *gin.Context) {
 	force := c.Request.URL.Query().Get("force") == "1"
 	name := c.Params.ByName("name")
 
+	// Load shallowly for 404 check, resource key, and task name.
+	// Full checks (published/snapshots) happen inside the task.
 	collectionFactory := context.NewCollectionFactory()
 	collection := collectionFactory.LocalRepoCollection()
-	snapshotCollection := collectionFactory.SnapshotCollection()
-	publishedCollection := collectionFactory.PublishedRepoCollection()
 
 	repo, err := collection.ByName(name)
 	if err != nil {
@@ -292,19 +332,32 @@ func apiReposDrop(c *gin.Context) {
 	resources := []string{string(repo.Key())}
 	taskName := fmt.Sprintf("Delete repo %s", name)
 	maybeRunTaskInBackground(c, taskName, resources, func(_ aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
-		published := publishedCollection.ByLocalRepo(repo)
+		// Task: Create fresh collections inside task after lock acquired
+		taskCollectionFactory := context.NewCollectionFactory()
+		taskCollection := taskCollectionFactory.LocalRepoCollection()
+		taskSnapshotCollection := taskCollectionFactory.SnapshotCollection()
+		taskPublishedCollection := taskCollectionFactory.PublishedRepoCollection()
+
+		// Re-read repo with fresh collection after lock
+		repo, err := taskCollection.ByName(name)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusConflict, Value: nil}, fmt.Errorf("unable to drop: %s", err)
+		}
+
+		// Check with fresh collections
+		published := taskPublishedCollection.ByLocalRepo(repo)
 		if len(published) > 0 {
 			return &task.ProcessReturnValue{Code: http.StatusConflict, Value: nil}, fmt.Errorf("unable to drop, local repo is published")
 		}
 
 		if !force {
-			snapshots := snapshotCollection.ByLocalRepoSource(repo)
+			snapshots := taskSnapshotCollection.ByLocalRepoSource(repo)
 			if len(snapshots) > 0 {
 				return &task.ProcessReturnValue{Code: http.StatusConflict, Value: nil}, fmt.Errorf("unable to drop, local repo has snapshots, use ?force=1 to override")
 			}
 		}
 
-		return &task.ProcessReturnValue{Code: http.StatusOK, Value: gin.H{}}, collection.Drop(repo)
+		return &task.ProcessReturnValue{Code: http.StatusOK, Value: gin.H{}}, taskCollection.Drop(repo)
 	})
 }
 
@@ -361,10 +414,13 @@ func apiReposPackagesAddDelete(c *gin.Context, taskNamePrefix string, cb func(li
 		return
 	}
 
+	// Load shallowly for 404 check and resource key.
+	// Full load and mutations happen inside the task.
 	collectionFactory := context.NewCollectionFactory()
 	collection := collectionFactory.LocalRepoCollection()
 
-	repo, err := collection.ByName(c.Params.ByName("name"))
+	name := c.Params.ByName("name")
+	repo, err := collection.ByName(name)
 	if err != nil {
 		AbortWithJSONError(c, 404, err)
 		return
@@ -373,13 +429,23 @@ func apiReposPackagesAddDelete(c *gin.Context, taskNamePrefix string, cb func(li
 	resources := []string{string(repo.Key())}
 
 	maybeRunTaskInBackground(c, taskNamePrefix+repo.Name, resources, func(out aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
-		err = collection.LoadComplete(repo)
+		// Task: Create fresh factory and collection inside task after lock
+		taskCollectionFactory := context.NewCollectionFactory()
+		taskCollection := taskCollectionFactory.LocalRepoCollection()
+
+		// Fresh load after lock acquired (use captured `name` variable, not gin context)
+		repo, err := taskCollection.ByName(name)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusNotFound, Value: nil}, err
+		}
+
+		err = taskCollection.LoadComplete(repo)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
 		}
 
 		out.Printf("Loading packages...\n")
-		list, err := deb.NewPackageListFromRefList(repo.RefList(), collectionFactory.PackageCollection(), nil)
+		list, err := deb.NewPackageListFromRefList(repo.RefList(), taskCollectionFactory.PackageCollection(), nil)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
 		}
@@ -388,7 +454,7 @@ func apiReposPackagesAddDelete(c *gin.Context, taskNamePrefix string, cb func(li
 		for _, ref := range b.PackageRefs {
 			var p *deb.Package
 
-			p, err = collectionFactory.PackageCollection().ByKey([]byte(ref))
+			p, err = taskCollectionFactory.PackageCollection().ByKey([]byte(ref))
 			if err != nil {
 				if err == database.ErrNotFound {
 					return &task.ProcessReturnValue{Code: http.StatusNotFound, Value: nil}, fmt.Errorf("packages %s: %s", ref, err)
@@ -404,7 +470,7 @@ func apiReposPackagesAddDelete(c *gin.Context, taskNamePrefix string, cb func(li
 
 		repo.UpdateRefList(deb.NewPackageRefListFromPackageList(list))
 
-		err = collectionFactory.LocalRepoCollection().Update(repo)
+		err = taskCollection.Update(repo)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to save: %s", err)
 		}
@@ -511,6 +577,8 @@ func apiReposPackageFromDir(c *gin.Context) {
 		return
 	}
 
+	// Load shallowly for 404 check and resource key.
+	// Full load and mutations happen inside the task.
 	collectionFactory := context.NewCollectionFactory()
 	collection := collectionFactory.LocalRepoCollection()
 
@@ -534,7 +602,17 @@ func apiReposPackageFromDir(c *gin.Context) {
 	resources := []string{string(repo.Key())}
 	resources = append(resources, sources...)
 	maybeRunTaskInBackground(c, taskName, resources, func(out aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
-		err = collection.LoadComplete(repo)
+		// Task: Create fresh factory and collection inside task after lock
+		taskCollectionFactory := context.NewCollectionFactory()
+		taskCollection := taskCollectionFactory.LocalRepoCollection()
+
+		// Fresh load after lock acquired
+		repo, err := taskCollection.ByName(name)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
+		}
+
+		err = taskCollection.LoadComplete(repo)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
 		}
@@ -555,13 +633,13 @@ func apiReposPackageFromDir(c *gin.Context) {
 
 		packageFiles, otherFiles, failedFiles = deb.CollectPackageFiles(sources, reporter)
 
-		list, err := deb.NewPackageListFromRefList(repo.RefList(), collectionFactory.PackageCollection(), nil)
+		list, err = deb.NewPackageListFromRefList(repo.RefList(), taskCollectionFactory.PackageCollection(), nil)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to load packages: %s", err)
 		}
 
 		processedFiles, failedFiles2, err = deb.ImportPackageFiles(list, packageFiles, forceReplace, verifier, context.PackagePool(),
-			collectionFactory.PackageCollection(), reporter, nil, collectionFactory.ChecksumCollection)
+			taskCollectionFactory.PackageCollection(), reporter, nil, taskCollectionFactory.ChecksumCollection)
 		failedFiles = append(failedFiles, failedFiles2...)
 		processedFiles = append(processedFiles, otherFiles...)
 
@@ -571,7 +649,7 @@ func apiReposPackageFromDir(c *gin.Context) {
 
 		repo.UpdateRefList(deb.NewPackageRefListFromPackageList(list))
 
-		err = collectionFactory.LocalRepoCollection().Update(repo)
+		err = taskCollection.Update(repo)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to save: %s", err)
 		}
@@ -650,6 +728,8 @@ func apiReposCopyPackage(c *gin.Context) {
 		return
 	}
 
+	// Load shallowly for 404 check and resource keys.
+	// Full load and mutations happen inside the task.
 	collectionFactory := context.NewCollectionFactory()
 	dstRepo, err := collectionFactory.LocalRepoCollection().ByName(dstRepoName)
 	if err != nil {
@@ -673,12 +753,26 @@ func apiReposCopyPackage(c *gin.Context) {
 	resources := []string{string(dstRepo.Key()), string(srcRepo.Key())}
 
 	maybeRunTaskInBackground(c, taskName, resources, func(_ aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
-		err = collectionFactory.LocalRepoCollection().LoadComplete(dstRepo)
+		// Task: Create fresh factory and collections inside task after lock
+		taskCollectionFactory := context.NewCollectionFactory()
+
+		// Fresh load of both repos after lock acquired
+		dstRepo, err := taskCollectionFactory.LocalRepoCollection().ByName(dstRepoName)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusBadRequest, Value: nil}, fmt.Errorf("dest repo error: %s", err)
 		}
 
-		err = collectionFactory.LocalRepoCollection().LoadComplete(srcRepo)
+		srcRepo, err := taskCollectionFactory.LocalRepoCollection().ByName(srcRepoName)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusBadRequest, Value: nil}, fmt.Errorf("src repo error: %s", err)
+		}
+
+		err = taskCollectionFactory.LocalRepoCollection().LoadComplete(dstRepo)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusBadRequest, Value: nil}, fmt.Errorf("dest repo error: %s", err)
+		}
+
+		err = taskCollectionFactory.LocalRepoCollection().LoadComplete(srcRepo)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusBadRequest, Value: nil}, fmt.Errorf("src repo error: %s", err)
 		}
@@ -691,12 +785,12 @@ func apiReposCopyPackage(c *gin.Context) {
 			RemovedLines: []string{},
 		}
 
-		dstList, err := deb.NewPackageListFromRefList(dstRepo.RefList(), collectionFactory.PackageCollection(), context.Progress())
+		dstList, err := deb.NewPackageListFromRefList(dstRepo.RefList(), taskCollectionFactory.PackageCollection(), context.Progress())
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to load packages in dest: %s", err)
 		}
 
-		srcList, err := deb.NewPackageListFromRefList(srcRefList, collectionFactory.PackageCollection(), context.Progress())
+		srcList, err := deb.NewPackageListFromRefList(srcRefList, taskCollectionFactory.PackageCollection(), context.Progress())
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to load packages in src: %s", err)
 		}
@@ -764,7 +858,7 @@ func apiReposCopyPackage(c *gin.Context) {
 		} else {
 			dstRepo.UpdateRefList(deb.NewPackageRefListFromPackageList(dstList))
 
-			err = collectionFactory.LocalRepoCollection().Update(dstRepo)
+			err = taskCollectionFactory.LocalRepoCollection().Update(dstRepo)
 			if err != nil {
 				return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to save: %s", err)
 			}
@@ -867,6 +961,9 @@ func apiReposIncludePackageFromDir(c *gin.Context) {
 	resources = append(resources, sources...)
 
 	maybeRunTaskInBackground(c, taskName, resources, func(out aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
+		// Task: Create fresh factory and collection inside task after lock
+		taskCollectionFactory := context.NewCollectionFactory()
+
 		var (
 			err                       error
 			verifier                  = context.GetVerifier()
@@ -882,8 +979,8 @@ func apiReposIncludePackageFromDir(c *gin.Context) {
 		changesFiles, failedFiles = deb.CollectChangesFiles(sources, reporter)
 		_, failedFiles2, err = deb.ImportChangesFiles(
 			changesFiles, reporter, acceptUnsigned, ignoreSignature, forceReplace, noRemoveFiles, verifier,
-			repoTemplate, context.Progress(), collectionFactory.LocalRepoCollection(), collectionFactory.PackageCollection(),
-			context.PackagePool(), collectionFactory.ChecksumCollection, nil, query.Parse)
+			repoTemplate, context.Progress(), taskCollectionFactory.LocalRepoCollection(), taskCollectionFactory.PackageCollection(),
+			context.PackagePool(), taskCollectionFactory.ChecksumCollection, nil, query.Parse)
 		failedFiles = append(failedFiles, failedFiles2...)
 
 		if err != nil {

api/snapshot.go

@@ -165,6 +165,7 @@ func apiSnapshotsCreate(c *gin.Context) {
 		}
 	}
 
+	// Phase 1: Pre-task validation (shallow load for 404 checks only)
 	collectionFactory := context.NewCollectionFactory()
 	snapshotCollection := collectionFactory.SnapshotCollection()
 	var resources []string
@@ -182,8 +183,20 @@ func apiSnapshotsCreate(c *gin.Context) {
 	}
 
 	maybeRunTaskInBackground(c, "Create snapshot "+b.Name, resources, func(_ aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
-		for i := range sources {
-			err = snapshotCollection.LoadComplete(sources[i])
+		// Phase 2: Inside task lock - create fresh factory
+		taskCollectionFactory := context.NewCollectionFactory()
+		taskSnapshotCollection := taskCollectionFactory.SnapshotCollection()
+		taskPackageCollection := taskCollectionFactory.PackageCollection()
+
+		// Fresh load of all sources after lock acquired
+		freshSources := make([]*deb.Snapshot, len(b.SourceSnapshots))
+		for i := range b.SourceSnapshots {
+			freshSources[i], err = taskSnapshotCollection.ByName(b.SourceSnapshots[i])
+			if err != nil {
+				return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
+			}
+			// LoadComplete on fresh copy
+			err = taskSnapshotCollection.LoadComplete(freshSources[i])
 			if err != nil {
 				return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
 			}
@@ -191,9 +204,9 @@ func apiSnapshotsCreate(c *gin.Context) {
 
 		list := deb.NewPackageList()
 
-		// verify package refs and build package list
+		// verify package refs and build package list using fresh factory
 		for _, ref := range b.PackageRefs {
-			p, err := collectionFactory.PackageCollection().ByKey([]byte(ref))
+			p, err := taskPackageCollection.ByKey([]byte(ref))
 			if err != nil {
 				if err == database.ErrNotFound {
 					return &task.ProcessReturnValue{Code: http.StatusNotFound, Value: nil}, fmt.Errorf("package %s: %s", ref, err)
@@ -206,9 +219,9 @@ func apiSnapshotsCreate(c *gin.Context) {
 			}
 		}
 
-		snapshot = deb.NewSnapshotFromRefList(b.Name, sources, deb.NewPackageRefListFromPackageList(list), b.Description)
+		snapshot = deb.NewSnapshotFromRefList(b.Name, freshSources, deb.NewPackageRefListFromPackageList(list), b.Description)
 
-		err = snapshotCollection.Add(snapshot)
+		err = taskSnapshotCollection.Add(snapshot)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusBadRequest, Value: nil}, err
 		}
@@ -315,6 +328,7 @@ func apiSnapshotsUpdate(c *gin.Context) {
 		return
 	}
 
+	// Phase 1: Pre-task validation (shallow load for 404 check only)
 	collectionFactory := context.NewCollectionFactory()
 	collection := collectionFactory.SnapshotCollection()
 	name := c.Params.ByName("name")
@@ -325,14 +339,38 @@ func apiSnapshotsUpdate(c *gin.Context) {
 		return
 	}
 
+	// Pre-task validation of new name if provided (skip if renaming to same name)
+	if b.Name != "" && b.Name != name {
+		_, err = collection.ByName(b.Name)
+		if err == nil {
+			AbortWithJSONError(c, 409, fmt.Errorf("unable to rename: snapshot %s already exists", b.Name))
+			return
+		}
+	}
+
 	resources := []string{string(snapshot.ResourceKey()), "S" + b.Name}
 	taskName := fmt.Sprintf("Update snapshot %s", name)
+
 	maybeRunTaskInBackground(c, taskName, resources, func(_ aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
-		_, err := collection.ByName(b.Name)
-		if err == nil {
-			return &task.ProcessReturnValue{Code: http.StatusConflict, Value: nil}, fmt.Errorf("unable to rename: snapshot %s already exists", b.Name)
+		// Phase 2: Inside task lock - create fresh factory
+		taskCollectionFactory := context.NewCollectionFactory()
+		taskCollection := taskCollectionFactory.SnapshotCollection()
+
+		// Fresh load after lock acquired
+		snapshot, err = taskCollection.ByName(name)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
 		}
 
+		// Fresh duplicate check inside lock
+		if b.Name != "" {
+			_, err := taskCollection.ByName(b.Name)
+			if err == nil {
+				return &task.ProcessReturnValue{Code: http.StatusConflict, Value: nil}, fmt.Errorf("unable to rename: snapshot %s already exists", b.Name)
+			}
+		}
+
+		// Update fresh copy
 		if b.Name != "" {
 			snapshot.Name = b.Name
 		}
@@ -341,7 +379,7 @@ func apiSnapshotsUpdate(c *gin.Context) {
 			snapshot.Description = b.Description
 		}
 
-		err = collectionFactory.SnapshotCollection().Update(snapshot)
+		err = taskCollection.Update(snapshot)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
 		}
@@ -395,9 +433,9 @@ func apiSnapshotsDrop(c *gin.Context) {
 	name := c.Params.ByName("name")
 	force := c.Request.URL.Query().Get("force") == "1"
 
+	// Phase 1: Pre-task validation (shallow load for 404 check only)
 	collectionFactory := context.NewCollectionFactory()
 	snapshotCollection := collectionFactory.SnapshotCollection()
-	publishedCollection := collectionFactory.PublishedRepoCollection()
 
 	snapshot, err := snapshotCollection.ByName(name)
 	if err != nil {
@@ -407,21 +445,35 @@ func apiSnapshotsDrop(c *gin.Context) {
 
 	resources := []string{string(snapshot.ResourceKey())}
 	taskName := fmt.Sprintf("Delete snapshot %s", name)
+
 	maybeRunTaskInBackground(c, taskName, resources, func(_ aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
-		published := publishedCollection.BySnapshot(snapshot)
+		// Phase 2: Inside task lock - create fresh collections
+		taskCollectionFactory := context.NewCollectionFactory()
+		taskSnapshotCollection := taskCollectionFactory.SnapshotCollection()
+		taskPublishedCollection := taskCollectionFactory.PublishedRepoCollection()
+
+		// Fresh load after lock acquired
+		snapshot, err := taskSnapshotCollection.ByName(name)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
+		}
+
+		// Fresh checks with current collections
+		published := taskPublishedCollection.BySnapshot(snapshot)
 
 		if len(published) > 0 {
 			return &task.ProcessReturnValue{Code: http.StatusConflict, Value: nil}, fmt.Errorf("unable to drop: snapshot is published")
 		}
 
 		if !force {
-			snapshots := snapshotCollection.BySnapshotSource(snapshot)
+			// Using fresh collection for dependency check
+			snapshots := taskSnapshotCollection.BySnapshotSource(snapshot)
 			if len(snapshots) > 0 {
 				return &task.ProcessReturnValue{Code: http.StatusConflict, Value: nil}, fmt.Errorf("won't delete snapshot that was used as source for other snapshots, use ?force=1 to override")
 			}
 		}
 
-		err = snapshotCollection.Drop(snapshot)
+		err = taskSnapshotCollection.Drop(snapshot)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
 		}
@@ -576,6 +628,7 @@ func apiSnapshotsMerge(c *gin.Context) {
 		return
 	}
 
+	// Phase 1: Pre-task validation (shallow load for 404 checks only)
 	collectionFactory := context.NewCollectionFactory()
 	snapshotCollection := collectionFactory.SnapshotCollection()
 
@@ -592,32 +645,43 @@ func apiSnapshotsMerge(c *gin.Context) {
 	}
 
 	maybeRunTaskInBackground(c, "Merge snapshot "+name, resources, func(_ aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
-		err = snapshotCollection.LoadComplete(sources[0])
-		if err != nil {
-			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
-		}
-		result := sources[0].RefList()
-		for i := 1; i < len(sources); i++ {
-			err = snapshotCollection.LoadComplete(sources[i])
+		// Phase 2: Inside task lock - create fresh factory
+		taskCollectionFactory := context.NewCollectionFactory()
+		taskSnapshotCollection := taskCollectionFactory.SnapshotCollection()
+
+		// Fresh load of all sources inside task
+		freshSources := make([]*deb.Snapshot, len(body.Sources))
+		for i := range body.Sources {
+			freshSources[i], err = taskSnapshotCollection.ByName(body.Sources[i])
 			if err != nil {
 				return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
 			}
-			result = result.Merge(sources[i].RefList(), overrideMatching, false)
+			// LoadComplete on fresh copy
+			err = taskSnapshotCollection.LoadComplete(freshSources[i])
+			if err != nil {
+				return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
+			}
+		}
+
+		// Merge using fresh sources
+		result := freshSources[0].RefList()
+		for i := 1; i < len(freshSources); i++ {
+			result = result.Merge(freshSources[i].RefList(), overrideMatching, false)
 		}
 
 		if latest {
 			result.FilterLatestRefs()
 		}
 
-		sourceDescription := make([]string, len(sources))
-		for i, s := range sources {
+		sourceDescription := make([]string, len(freshSources))
+		for i, s := range freshSources {
 			sourceDescription[i] = fmt.Sprintf("'%s'", s.Name)
 		}
 
-		snapshot = deb.NewSnapshotFromRefList(name, sources, result,
+		snapshot = deb.NewSnapshotFromRefList(name, freshSources, result,
 			fmt.Sprintf("Merged from sources: %s", strings.Join(sourceDescription, ", ")))
 
-		err = collectionFactory.SnapshotCollection().Add(snapshot)
+		err = taskCollectionFactory.SnapshotCollection().Add(snapshot)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, fmt.Errorf("unable to create snapshot: %s", err)
 		}
@@ -701,21 +765,29 @@ func apiSnapshotsPull(c *gin.Context) {
 	resources := []string{string(sourceSnapshot.ResourceKey()), string(toSnapshot.ResourceKey())}
 	taskName := fmt.Sprintf("Pull snapshot %s into %s and save as %s", body.Source, name, body.Destination)
 	maybeRunTaskInBackground(c, taskName, resources, func(_ aptly.Progress, _ *task.Detail) (*task.ProcessReturnValue, error) {
-		err = collectionFactory.SnapshotCollection().LoadComplete(toSnapshot)
+		// Phase 2: Inside task lock - create fresh factory
+		taskCollectionFactory := context.NewCollectionFactory()
+
+		// Fresh load of snapshots after lock acquired
+		freshToSnapshot, err := taskCollectionFactory.SnapshotCollection().ByName(name)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
 		}
-		err = collectionFactory.SnapshotCollection().LoadComplete(sourceSnapshot)
+		freshSourceSnapshot, err := taskCollectionFactory.SnapshotCollection().ByName(body.Source)
+		if err != nil {
+			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
+		}
+		err = taskCollectionFactory.SnapshotCollection().LoadComplete(freshSourceSnapshot)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
 		}
 
 		// convert snapshots to package list
-		toPackageList, err := deb.NewPackageListFromRefList(toSnapshot.RefList(), collectionFactory.PackageCollection(), context.Progress())
+		toPackageList, err := deb.NewPackageListFromRefList(freshToSnapshot.RefList(), taskCollectionFactory.PackageCollection(), context.Progress())
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
 		}
-		sourcePackageList, err := deb.NewPackageListFromRefList(sourceSnapshot.RefList(), collectionFactory.PackageCollection(), context.Progress())
+		sourcePackageList, err := deb.NewPackageListFromRefList(freshSourceSnapshot.RefList(), taskCollectionFactory.PackageCollection(), context.Progress())
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
 		}
@@ -812,10 +884,10 @@ func apiSnapshotsPull(c *gin.Context) {
 		}
 
 		// Create <destination> snapshot
-		destinationSnapshot = deb.NewSnapshotFromPackageList(body.Destination, []*deb.Snapshot{toSnapshot, sourceSnapshot}, toPackageList,
-			fmt.Sprintf("Pulled into '%s' with '%s' as source, pull request was: '%s'", toSnapshot.Name, sourceSnapshot.Name, strings.Join(body.Queries, ", ")))
+		destinationSnapshot = deb.NewSnapshotFromPackageList(body.Destination, []*deb.Snapshot{freshToSnapshot, freshSourceSnapshot}, toPackageList,
+			fmt.Sprintf("Pulled into '%s' with '%s' as source, pull request was: '%s'", freshToSnapshot.Name, freshSourceSnapshot.Name, strings.Join(body.Queries, ", ")))
 
-		err = collectionFactory.SnapshotCollection().Add(destinationSnapshot)
+		err = taskCollectionFactory.SnapshotCollection().Add(destinationSnapshot)
 		if err != nil {
 			return &task.ProcessReturnValue{Code: http.StatusInternalServerError, Value: nil}, err
 		}

deb/local.go

@@ -168,6 +168,8 @@ func (collection *LocalRepoCollection) Update(repo *LocalRepo) error {
 
 // LoadComplete loads additional information for local repo
 func (collection *LocalRepoCollection) LoadComplete(repo *LocalRepo) error {
+	repo.packageRefs = &PackageRefList{}
+
 	encoded, err := collection.db.Get(repo.RefKey())
 	if err == database.ErrNotFound {
 		return nil
@@ -176,7 +178,6 @@ func (collection *LocalRepoCollection) LoadComplete(repo *LocalRepo) error {
 		return err
 	}
 
-	repo.packageRefs = &PackageRefList{}
 	return repo.packageRefs.Decode(encoded)
 }
 

deb/local_test.go

@@ -133,6 +133,18 @@ func (s *LocalRepoCollectionSuite) TestByUUID(c *C) {
 	c.Assert(r.String(), Equals, repo.String())
 }
 
+func (s *LocalRepoCollectionSuite) TestLoadCompleteNoRefKey(c *C) {
+	repo := NewLocalRepo("local1", "Comment 1")
+	c.Assert(s.collection.Update(repo), IsNil)
+
+	r, err := s.collection.ByName("local1")
+	c.Assert(err, IsNil)
+
+	c.Assert(s.collection.LoadComplete(r), IsNil)
+	c.Assert(r.packageRefs, NotNil)
+	c.Assert(r.NumPackages(), Equals, 0)
+}
+
 func (s *LocalRepoCollectionSuite) TestUpdateLoadComplete(c *C) {
 	repo := NewLocalRepo("local1", "Comment 1")
 	c.Assert(s.collection.Update(repo), IsNil)

deb/ppa.go

@@ -28,6 +28,11 @@ func ParsePPA(ppaURL string, config *utils.ConfigStructure) (url string, distrib
 		}
 	}
 
+	baseurl := config.PpaBaseURL
+	if baseurl == "" {
+		baseurl = "http://ppa.launchpad.net"
+	}
+
 	codename := config.PpaCodename
 	if codename == "" {
 		codename, err = getCodename()
@@ -39,7 +44,7 @@ func ParsePPA(ppaURL string, config *utils.ConfigStructure) (url string, distrib
 
 	distribution = codename
 	components = []string{"main"}
-	url = fmt.Sprintf("http://ppa.launchpad.net/%s/%s/%s", matches[1], matches[2], distributorID)
+	url = fmt.Sprintf("%s/%s/%s/%s", baseurl, matches[1], matches[2], distributorID)
 
 	return
 }

deb/reflist.go

@@ -79,6 +79,9 @@ func (l *PackageRefList) Decode(input []byte) error {
 
 // ForEach calls handler for each package ref in list
 func (l *PackageRefList) ForEach(handler func([]byte) error) error {
+	if l == nil {
+		return nil
+	}
 	var err error
 	for _, p := range l.Refs {
 		err = handler(p)

deb/reflist_test.go

@@ -130,6 +130,17 @@ func (s *PackageRefListSuite) TestPackageRefListForeach(c *C) {
 	c.Check(err, Equals, e)
 }
 
+func (s *PackageRefListSuite) TestForEachNilList(c *C) {
+	var l *PackageRefList
+	called := false
+	err := l.ForEach(func([]byte) error {
+		called = true
+		return nil
+	})
+	c.Assert(err, IsNil)
+	c.Assert(called, Equals, false)
+}
+
 func (s *PackageRefListSuite) TestHas(c *C) {
 	_ = s.list.Add(s.p1)
 	_ = s.list.Add(s.p3)

debian/aptly.conf

@@ -70,6 +70,9 @@ ppa_distributor_id: ubuntu
 # Codename for short PPA url expansion
 ppa_codename: ""
 
+# PPA Base URL (default: launchpad)
+# # ppa_baseurl: http://ppa.launchpad.net
+
 
 # Aptly Server
 ###############

docs/Files.md

@@ -2,7 +2,7 @@
 <div>
 
 In order to add debian package files to a local repository, files are first uploaded to a temporary directory.
-Then the directory (or a specific file within) is added to a repository. After adding to a repositorty, the directory resp. files are removed bt default.
+Then the directory (or a specific file within) is added to a repository. After adding to a repository, the directory resp. files are removed bt default.
 
 All uploaded files are stored under `<rootDir>/upload/<tempdir>` directory.
 

docs/Packages.md

@@ -1,5 +1,5 @@
 # Search Package Collection
 <div>
-Perform operations on the whole collection of packages in apty database.
+Perform operations on the whole collection of packages in aptly database.
 </div>
 

docs/Publish.md

@@ -35,6 +35,6 @@ aptly publish repo my-repo --gpg-key=KEY_ID_a --gpg-key=KEY_ID_b
 #### Parameters
 
 Publish APIs use following convention to identify published repositories: `/api/publish/:prefix/:distribution`.  `:distribution` is distribution name, while `:prefix` is `[<storage>:]<prefix>` (storage is optional, it defaults to empty string), if publishing prefix contains slashes `/`, they should be replaced with underscores (`_`) and underscores
-should be replaced with double underscore (`__`). To specify root `:prefix`, use `:.`, as `.` is ambigious in URLs.
+should be replaced with double underscore (`__`). To specify root `:prefix`, use `:.`, as `.` is ambiguous in URLs.
 
 </div>

docs/Repos.md

@@ -1,6 +1,6 @@
 # Manage Local Repositories
 <div>
-A local repository is a collection of versionned packages (usually custom packages created internally).
+A local repository is a collection of versioned packages (usually custom packages created internally).
 
 Packages can be added, removed, moved or copied between repos.
 

system/t02_config/ConfigShowTest_gold

@@ -12,6 +12,7 @@
     "dependencyVerboseResolve": false,
     "ppaDistributorID": "ubuntu",
     "ppaCodename": "",
+    "ppaBaseURL": "http://ppa.launchpad.net",
     "serveInAPIMode": true,
     "enableMetricsEndpoint": true,
     "enableSwaggerEndpoint": false,

system/t02_config/ConfigShowYAMLTest_gold

@@ -11,6 +11,7 @@ dep_follow_source: false
 dep_verboseresolve: false
 ppa_distributor_id: ubuntu
 ppa_codename: ""
+ppa_baseurl: http://ppa.launchpad.net
 serve_in_api_mode: true
 enable_metrics_endpoint: true
 enable_swagger_endpoint: false

system/t02_config/CreateConfigTest_gold

@@ -70,6 +70,9 @@ ppa_distributor_id: ubuntu
 # Codename for short PPA url expansion
 ppa_codename: ""
 
+# PPA Base URL (default: launchpad)
+# # ppa_baseurl: http://ppa.launchpad.net
+
 
 # Aptly Server
 ###############

system/t04_mirror/CreateMirror18Test_gold

@@ -1,4 +1,4 @@
-Downloading: http://ppa.launchpad.net/gladky-anton/gnuplot/ubuntu/dists/maverick/InRelease
+Downloading: http://repo.aptly.info/system-tests/ppa/gladky-anton/gnuplot/ubuntu/dists/maverick/InRelease
 gpgv: Signature made Sun Jul 28 07:57:01 2024 UTC
 gpgv:                using RSA key 5BFCD481D86D5824470E469F9000B1C3A01F726C
 gpgv: Good signature from "Launchpad PPA for Anton Gladky"
@@ -6,5 +6,5 @@ gpgv: Signature made Sun Jul 28 07:57:01 2024 UTC
 gpgv:                using RSA key 02219381E9161C78A46CB2BFA5279A973B1F56C0
 gpgv: Good signature from "Launchpad sim"
 
-Mirror [mirror18]: http://ppa.launchpad.net/gladky-anton/gnuplot/ubuntu/ maverick successfully added.
+Mirror [mirror18]: http://repo.aptly.info/system-tests/ppa/gladky-anton/gnuplot/ubuntu/ maverick successfully added.
 You can run 'aptly mirror update mirror18' to download repository contents.

system/t04_mirror/CreateMirror18Test_mirror_show

@@ -1,5 +1,5 @@
 Name: mirror18
-Archive Root URL: http://ppa.launchpad.net/gladky-anton/gnuplot/ubuntu/
+Archive Root URL: http://repo.aptly.info/system-tests/ppa/gladky-anton/gnuplot/ubuntu/
 Distribution: maverick
 Components: main
 Architectures: amd64, armel, i386, powerpc

system/t04_mirror/create.py

@@ -221,6 +221,7 @@ class CreateMirror18Test(BaseTest):
         "max-tries": 1,
         "ppaDistributorID": "ubuntu",
         "ppaCodename": "maverick",
+        "ppaBaseURL": "http://repo.aptly.info/system-tests/ppa",
     }
 
     fixtureCmds = [

system/t12_api/repos.py

@@ -461,3 +461,34 @@ class ReposAPITestCopyPackage(APITest):
 
         self.check_equal(self.get(f"/api/repos/{repo2_name}/packages").json(),
                          ['Pi386 libboost-program-options-dev 1.49.0.1 918d2f433384e378'])
+
+
+class ReposAPITestCreateEdit(APITest):
+    """
+    POST /api/repos,
+    """
+    def check(self):
+        repo_name = self.random_name() + ' with space'
+        repo_desc = {'Comment': 'fun repo',
+                     'DefaultComponent': 'contrib',
+                     'DefaultDistribution': 'bookworm',
+                     'Name': repo_name}
+
+        resp = self.post("/api/repos", json=repo_desc)
+        self.check_equal(resp.json(), repo_desc)
+        self.check_equal(resp.status_code, 201)
+
+        repo_desc = {'Comment': 'modified repo',
+                     'DefaultComponent': 'main',
+                     'DefaultDistribution': 'trixie',
+                     'Name': repo_name + '@renamed'}
+        resp = self.put(f"/api/repos/{repo_name}", json=repo_desc)
+        self.check_equal(resp.json(), repo_desc)
+        self.check_equal(resp.status_code, 200)
+
+        resp = self.get("/api/repos/" + repo_name + '@renamed')
+        self.check_equal(resp.json(), repo_desc)
+        self.check_equal(resp.status_code, 200)
+
+        resp = self.delete("/api/repos/" + repo_name + '@renamed')
+        self.check_equal(resp.status_code, 200)

utils/config.go

@@ -31,6 +31,7 @@ type ConfigStructure struct { // nolint: maligned
 	// PPA
 	PpaDistributorID string `json:"ppaDistributorID"              yaml:"ppa_distributor_id"`
 	PpaCodename      string `json:"ppaCodename"                   yaml:"ppa_codename"`
+	PpaBaseURL       string `json:"ppaBaseURL"                    yaml:"ppa_baseurl"`
 
 	// Server
 	ServeInAPIMode        bool `json:"serveInAPIMode"                yaml:"serve_in_api_mode"`
@@ -235,6 +236,7 @@ var Config = ConfigStructure{
 	SkipLegacyPool:         false,
 	PpaDistributorID:       "ubuntu",
 	PpaCodename:            "",
+	PpaBaseURL:             "http://ppa.launchpad.net",
 	FileSystemPublishRoots: map[string]FileSystemPublishRoot{},
 	S3PublishRoots:         map[string]S3PublishRoot{},
 	SwiftPublishRoots:      map[string]SwiftPublishRoot{},

utils/config_test.go

@@ -85,6 +85,7 @@ func (s *ConfigSuite) TestSaveConfig(c *C) {
 		"  \"dependencyVerboseResolve\": false,\n" +
 		"  \"ppaDistributorID\": \"\",\n" +
 		"  \"ppaCodename\": \"\",\n" +
+		"  \"ppaBaseURL\": \"\",\n" +
 		"  \"serveInAPIMode\": false,\n" +
 		"  \"enableMetricsEndpoint\": false,\n" +
 		"  \"enableSwaggerEndpoint\": false,\n" +
@@ -252,6 +253,7 @@ func (s *ConfigSuite) TestSaveYAML2Config(c *C) {
 		"dep_verboseresolve: false\n" +
 		"ppa_distributor_id: \"\"\n" +
 		"ppa_codename: \"\"\n" +
+		"ppa_baseurl: \"\"\n" +
 		"serve_in_api_mode: false\n" +
 		"enable_metrics_endpoint: false\n" +
 		"enable_swagger_endpoint: false\n" +
@@ -308,6 +310,7 @@ dep_follow_source: true
 dep_verboseresolve: true
 ppa_distributor_id: Ubuntu
 ppa_codename: code
+ppa_baseurl: http://ppa.launchpad.net
 serve_in_api_mode: true
 enable_metrics_endpoint: true
 enable_swagger_endpoint: true