Plugin hooks (#1452)

* Refactor session and plugin code
* Add context to job tasks
* Show hooks in plugins page
* Refactor session management

graphql/documents/queries/plugins.graphql

@@ -10,6 +10,12 @@ query Plugins {
       name
       description
     }
+
+    hooks {
+      name
+      description
+      hooks
+    }
   }
 }
 

graphql/schema/types/plugin.graphql

@@ -7,6 +7,7 @@ type Plugin {
     version: String
 
     tasks: [PluginTask!]
+    hooks: [PluginHook!]
 }
 
 type PluginTask {
@@ -15,6 +16,13 @@ type PluginTask {
     plugin: Plugin!
 }
 
+type PluginHook {
+    name: String!
+    description: String
+    hooks: [String!]
+    plugin: Plugin!
+}
+
 type PluginResult {
     error: String
     result: String

pkg/api/changeset_translator.go

@@ -65,6 +65,15 @@ func (t changesetTranslator) hasField(field string) bool {
 	return found
 }
 
+func (t changesetTranslator) getFields() []string {
+	var ret []string
+	for k := range t.inputMap {
+		ret = append(ret, k)
+	}
+
+	return ret
+}
+
 func (t changesetTranslator) nullString(value *string, field string) *sql.NullString {
 	if !t.hasField(field) {
 		return nil

pkg/api/context_keys.go

@@ -5,13 +5,12 @@ package api
 type key int
 
 const (
-	galleryKey   key = 0
-	performerKey key = 1
-	sceneKey     key = 2
-	studioKey    key = 3
-	movieKey     key = 4
-	ContextUser  key = 5
-	tagKey       key = 6
-	downloadKey  key = 7
-	imageKey     key = 8
+	galleryKey key = iota
+	performerKey
+	sceneKey
+	studioKey
+	movieKey
+	tagKey
+	downloadKey
+	imageKey
 )

pkg/api/resolver.go

@@ -7,10 +7,16 @@ import (
 
 	"github.com/stashapp/stash/pkg/logger"
 	"github.com/stashapp/stash/pkg/models"
+	"github.com/stashapp/stash/pkg/plugin"
 )
 
+type hookExecutor interface {
+	ExecutePostHooks(ctx context.Context, id int, hookType plugin.HookTriggerEnum, input interface{}, inputFields []string)
+}
+
 type Resolver struct {
-	txnManager models.TransactionManager
+	txnManager   models.TransactionManager
+	hookExecutor hookExecutor
 }
 
 func (r *Resolver) Gallery() models.GalleryResolver {

pkg/api/resolver_mutation_gallery.go

@@ -10,9 +10,21 @@ import (
 
 	"github.com/stashapp/stash/pkg/manager"
 	"github.com/stashapp/stash/pkg/models"
+	"github.com/stashapp/stash/pkg/plugin"
 	"github.com/stashapp/stash/pkg/utils"
 )
 
+func (r *mutationResolver) getGallery(ctx context.Context, id int) (ret *models.Gallery, err error) {
+	if err := r.withReadTxn(ctx, func(repo models.ReaderRepository) error {
+		ret, err = repo.Gallery().Find(id)
+		return err
+	}); err != nil {
+		return nil, err
+	}
+
+	return ret, nil
+}
+
 func (r *mutationResolver) GalleryCreate(ctx context.Context, input models.GalleryCreateInput) (*models.Gallery, error) {
 	// name must be provided
 	if input.Title == "" {
@@ -90,7 +102,8 @@ func (r *mutationResolver) GalleryCreate(ctx context.Context, input models.Galle
 		return nil, err
 	}
 
-	return gallery, nil
+	r.hookExecutor.ExecutePostHooks(ctx, gallery.ID, plugin.GalleryCreatePost, input, nil)
+	return r.getGallery(ctx, gallery.ID)
 }
 
 func (r *mutationResolver) updateGalleryPerformers(qb models.GalleryReaderWriter, galleryID int, performerIDs []string) error {
@@ -130,7 +143,9 @@ func (r *mutationResolver) GalleryUpdate(ctx context.Context, input models.Galle
 		return nil, err
 	}
 
-	return ret, nil
+	// execute post hooks outside txn
+	r.hookExecutor.ExecutePostHooks(ctx, ret.ID, plugin.GalleryUpdatePost, input, translator.getFields())
+	return r.getGallery(ctx, ret.ID)
 }
 
 func (r *mutationResolver) GalleriesUpdate(ctx context.Context, input []*models.GalleryUpdateInput) (ret []*models.Gallery, err error) {
@@ -156,7 +171,23 @@ func (r *mutationResolver) GalleriesUpdate(ctx context.Context, input []*models.
 		return nil, err
 	}
 
-	return ret, nil
+	// execute post hooks outside txn
+	var newRet []*models.Gallery
+	for i, gallery := range ret {
+		translator := changesetTranslator{
+			inputMap: inputMaps[i],
+		}
+
+		r.hookExecutor.ExecutePostHooks(ctx, gallery.ID, plugin.GalleryUpdatePost, input, translator.getFields())
+		gallery, err = r.getGallery(ctx, gallery.ID)
+		if err != nil {
+			return nil, err
+		}
+
+		newRet = append(newRet, gallery)
+	}
+
+	return newRet, nil
 }
 
 func (r *mutationResolver) galleryUpdate(input models.GalleryUpdateInput, translator changesetTranslator, repo models.Repository) (*models.Gallery, error) {
@@ -314,7 +345,20 @@ func (r *mutationResolver) BulkGalleryUpdate(ctx context.Context, input models.B
 		return nil, err
 	}
 
-	return ret, nil
+	// execute post hooks outside of txn
+	var newRet []*models.Gallery
+	for _, gallery := range ret {
+		r.hookExecutor.ExecutePostHooks(ctx, gallery.ID, plugin.GalleryUpdatePost, input, translator.getFields())
+
+		gallery, err := r.getGallery(ctx, gallery.ID)
+		if err != nil {
+			return nil, err
+		}
+
+		newRet = append(newRet, gallery)
+	}
+
+	return newRet, nil
 }
 
 func adjustGalleryPerformerIDs(qb models.GalleryReader, galleryID int, ids models.BulkUpdateIds) (ret []int, err error) {
@@ -438,6 +482,16 @@ func (r *mutationResolver) GalleryDestroy(ctx context.Context, input models.Gall
 		}
 	}
 
+	// call post hook after performing the other actions
+	for _, gallery := range galleries {
+		r.hookExecutor.ExecutePostHooks(ctx, gallery.ID, plugin.GalleryDestroyPost, input, nil)
+	}
+
+	// call image destroy post hook as well
+	for _, img := range imgsToDelete {
+		r.hookExecutor.ExecutePostHooks(ctx, img.ID, plugin.ImageDestroyPost, nil, nil)
+	}
+
 	return true, nil
 }
 

pkg/api/resolver_mutation_image.go

@@ -8,9 +8,21 @@ import (
 
 	"github.com/stashapp/stash/pkg/manager"
 	"github.com/stashapp/stash/pkg/models"
+	"github.com/stashapp/stash/pkg/plugin"
 	"github.com/stashapp/stash/pkg/utils"
 )
 
+func (r *mutationResolver) getImage(ctx context.Context, id int) (ret *models.Image, err error) {
+	if err := r.withReadTxn(ctx, func(repo models.ReaderRepository) error {
+		ret, err = repo.Image().Find(id)
+		return err
+	}); err != nil {
+		return nil, err
+	}
+
+	return ret, nil
+}
+
 func (r *mutationResolver) ImageUpdate(ctx context.Context, input models.ImageUpdateInput) (ret *models.Image, err error) {
 	translator := changesetTranslator{
 		inputMap: getUpdateInputMap(ctx),
@@ -24,7 +36,9 @@ func (r *mutationResolver) ImageUpdate(ctx context.Context, input models.ImageUp
 		return nil, err
 	}
 
-	return ret, nil
+	// execute post hooks outside txn
+	r.hookExecutor.ExecutePostHooks(ctx, ret.ID, plugin.ImageUpdatePost, input, translator.getFields())
+	return r.getImage(ctx, ret.ID)
 }
 
 func (r *mutationResolver) ImagesUpdate(ctx context.Context, input []*models.ImageUpdateInput) (ret []*models.Image, err error) {
@@ -50,7 +64,23 @@ func (r *mutationResolver) ImagesUpdate(ctx context.Context, input []*models.Ima
 		return nil, err
 	}
 
-	return ret, nil
+	// execute post hooks outside txn
+	var newRet []*models.Image
+	for i, image := range ret {
+		translator := changesetTranslator{
+			inputMap: inputMaps[i],
+		}
+
+		r.hookExecutor.ExecutePostHooks(ctx, image.ID, plugin.ImageUpdatePost, input, translator.getFields())
+		image, err = r.getImage(ctx, image.ID)
+		if err != nil {
+			return nil, err
+		}
+
+		newRet = append(newRet, image)
+	}
+
+	return newRet, nil
 }
 
 func (r *mutationResolver) imageUpdate(input models.ImageUpdateInput, translator changesetTranslator, repo models.Repository) (*models.Image, error) {
@@ -202,7 +232,20 @@ func (r *mutationResolver) BulkImageUpdate(ctx context.Context, input models.Bul
 		return nil, err
 	}
 
-	return ret, nil
+	// execute post hooks outside of txn
+	var newRet []*models.Image
+	for _, image := range ret {
+		r.hookExecutor.ExecutePostHooks(ctx, image.ID, plugin.ImageUpdatePost, input, translator.getFields())
+
+		image, err = r.getImage(ctx, image.ID)
+		if err != nil {
+			return nil, err
+		}
+
+		newRet = append(newRet, image)
+	}
+
+	return newRet, nil
 }
 
 func adjustImageGalleryIDs(qb models.ImageReader, imageID int, ids models.BulkUpdateIds) (ret []int, err error) {
@@ -268,6 +311,9 @@ func (r *mutationResolver) ImageDestroy(ctx context.Context, input models.ImageD
 		manager.DeleteImageFile(image)
 	}
 
+	// call post hook after performing the other actions
+	r.hookExecutor.ExecutePostHooks(ctx, image.ID, plugin.ImageDestroyPost, input, nil)
+
 	return true, nil
 }
 
@@ -315,6 +361,9 @@ func (r *mutationResolver) ImagesDestroy(ctx context.Context, input models.Image
 		if input.DeleteFile != nil && *input.DeleteFile {
 			manager.DeleteImageFile(image)
 		}
+
+		// call post hook after performing the other actions
+		r.hookExecutor.ExecutePostHooks(ctx, image.ID, plugin.ImageDestroyPost, input, nil)
 	}
 
 	return true, nil

pkg/api/resolver_mutation_metadata.go

@@ -17,7 +17,7 @@ import (
 )
 
 func (r *mutationResolver) MetadataScan(ctx context.Context, input models.ScanMetadataInput) (string, error) {
-	jobID, err := manager.GetInstance().Scan(input)
+	jobID, err := manager.GetInstance().Scan(ctx, input)
 
 	if err != nil {
 		return "", err
@@ -27,7 +27,7 @@ func (r *mutationResolver) MetadataScan(ctx context.Context, input models.ScanMe
 }
 
 func (r *mutationResolver) MetadataImport(ctx context.Context) (string, error) {
-	jobID, err := manager.GetInstance().Import()
+	jobID, err := manager.GetInstance().Import(ctx)
 	if err != nil {
 		return "", err
 	}
@@ -41,13 +41,13 @@ func (r *mutationResolver) ImportObjects(ctx context.Context, input models.Impor
 		return "", err
 	}
 
-	jobID := manager.GetInstance().RunSingleTask(t)
+	jobID := manager.GetInstance().RunSingleTask(ctx, t)
 
 	return strconv.Itoa(jobID), nil
 }
 
 func (r *mutationResolver) MetadataExport(ctx context.Context) (string, error) {
-	jobID, err := manager.GetInstance().Export()
+	jobID, err := manager.GetInstance().Export(ctx)
 	if err != nil {
 		return "", err
 	}
@@ -75,7 +75,7 @@ func (r *mutationResolver) ExportObjects(ctx context.Context, input models.Expor
 }
 
 func (r *mutationResolver) MetadataGenerate(ctx context.Context, input models.GenerateMetadataInput) (string, error) {
-	jobID, err := manager.GetInstance().Generate(input)
+	jobID, err := manager.GetInstance().Generate(ctx, input)
 
 	if err != nil {
 		return "", err
@@ -85,17 +85,17 @@ func (r *mutationResolver) MetadataGenerate(ctx context.Context, input models.Ge
 }
 
 func (r *mutationResolver) MetadataAutoTag(ctx context.Context, input models.AutoTagMetadataInput) (string, error) {
-	jobID := manager.GetInstance().AutoTag(input)
+	jobID := manager.GetInstance().AutoTag(ctx, input)
 	return strconv.Itoa(jobID), nil
 }
 
 func (r *mutationResolver) MetadataClean(ctx context.Context, input models.CleanMetadataInput) (string, error) {
-	jobID := manager.GetInstance().Clean(input)
+	jobID := manager.GetInstance().Clean(ctx, input)
 	return strconv.Itoa(jobID), nil
 }
 
 func (r *mutationResolver) MigrateHashNaming(ctx context.Context) (string, error) {
-	jobID := manager.GetInstance().MigrateHash()
+	jobID := manager.GetInstance().MigrateHash(ctx)
 	return strconv.Itoa(jobID), nil
 }
 

pkg/api/resolver_mutation_movie.go

@@ -7,9 +7,21 @@ import (
 	"time"
 
 	"github.com/stashapp/stash/pkg/models"
+	"github.com/stashapp/stash/pkg/plugin"
 	"github.com/stashapp/stash/pkg/utils"
 )
 
+func (r *mutationResolver) getMovie(ctx context.Context, id int) (ret *models.Movie, err error) {
+	if err := r.withReadTxn(ctx, func(repo models.ReaderRepository) error {
+		ret, err = repo.Movie().Find(id)
+		return err
+	}); err != nil {
+		return nil, err
+	}
+
+	return ret, nil
+}
+
 func (r *mutationResolver) MovieCreate(ctx context.Context, input models.MovieCreateInput) (*models.Movie, error) {
 	// generate checksum from movie name rather than image
 	checksum := utils.MD5FromString(input.Name)
@@ -104,7 +116,8 @@ func (r *mutationResolver) MovieCreate(ctx context.Context, input models.MovieCr
 		return nil, err
 	}
 
-	return movie, nil
+	r.hookExecutor.ExecutePostHooks(ctx, movie.ID, plugin.MovieCreatePost, input, nil)
+	return r.getMovie(ctx, movie.ID)
 }
 
 func (r *mutationResolver) MovieUpdate(ctx context.Context, input models.MovieUpdateInput) (*models.Movie, error) {
@@ -203,7 +216,8 @@ func (r *mutationResolver) MovieUpdate(ctx context.Context, input models.MovieUp
 		return nil, err
 	}
 
-	return movie, nil
+	r.hookExecutor.ExecutePostHooks(ctx, movie.ID, plugin.MovieUpdatePost, input, translator.getFields())
+	return r.getMovie(ctx, movie.ID)
 }
 
 func (r *mutationResolver) MovieDestroy(ctx context.Context, input models.MovieDestroyInput) (bool, error) {
@@ -217,6 +231,9 @@ func (r *mutationResolver) MovieDestroy(ctx context.Context, input models.MovieD
 	}); err != nil {
 		return false, err
 	}
+
+	r.hookExecutor.ExecutePostHooks(ctx, id, plugin.MovieDestroyPost, input, nil)
+
 	return true, nil
 }
 
@@ -238,5 +255,10 @@ func (r *mutationResolver) MoviesDestroy(ctx context.Context, movieIDs []string)
 	}); err != nil {
 		return false, err
 	}
+
+	for _, id := range ids {
+		r.hookExecutor.ExecutePostHooks(ctx, id, plugin.MovieDestroyPost, movieIDs, nil)
+	}
+
 	return true, nil
 }

pkg/api/resolver_mutation_performer.go

@@ -9,9 +9,21 @@ import (
 
 	"github.com/stashapp/stash/pkg/models"
 	"github.com/stashapp/stash/pkg/performer"
+	"github.com/stashapp/stash/pkg/plugin"
 	"github.com/stashapp/stash/pkg/utils"
 )
 
+func (r *mutationResolver) getPerformer(ctx context.Context, id int) (ret *models.Performer, err error) {
+	if err := r.withReadTxn(ctx, func(repo models.ReaderRepository) error {
+		ret, err = repo.Performer().Find(id)
+		return err
+	}); err != nil {
+		return nil, err
+	}
+
+	return ret, nil
+}
+
 func (r *mutationResolver) PerformerCreate(ctx context.Context, input models.PerformerCreateInput) (*models.Performer, error) {
 	// generate checksum from performer name rather than image
 	checksum := utils.MD5FromString(input.Name)
@@ -146,7 +158,8 @@ func (r *mutationResolver) PerformerCreate(ctx context.Context, input models.Per
 		return nil, err
 	}
 
-	return performer, nil
+	r.hookExecutor.ExecutePostHooks(ctx, performer.ID, plugin.PerformerCreatePost, input, nil)
+	return r.getPerformer(ctx, performer.ID)
 }
 
 func (r *mutationResolver) PerformerUpdate(ctx context.Context, input models.PerformerUpdateInput) (*models.Performer, error) {
@@ -267,7 +280,8 @@ func (r *mutationResolver) PerformerUpdate(ctx context.Context, input models.Per
 		return nil, err
 	}
 
-	return p, nil
+	r.hookExecutor.ExecutePostHooks(ctx, p.ID, plugin.PerformerUpdatePost, input, translator.getFields())
+	return r.getPerformer(ctx, p.ID)
 }
 
 func (r *mutationResolver) updatePerformerTags(qb models.PerformerReaderWriter, performerID int, tagsIDs []string) error {
@@ -372,7 +386,20 @@ func (r *mutationResolver) BulkPerformerUpdate(ctx context.Context, input models
 		return nil, err
 	}
 
-	return ret, nil
+	// execute post hooks outside of txn
+	var newRet []*models.Performer
+	for _, performer := range ret {
+		r.hookExecutor.ExecutePostHooks(ctx, performer.ID, plugin.ImageUpdatePost, input, translator.getFields())
+
+		performer, err = r.getPerformer(ctx, performer.ID)
+		if err != nil {
+			return nil, err
+		}
+
+		newRet = append(newRet, performer)
+	}
+
+	return newRet, nil
 }
 
 func (r *mutationResolver) PerformerDestroy(ctx context.Context, input models.PerformerDestroyInput) (bool, error) {
@@ -386,6 +413,9 @@ func (r *mutationResolver) PerformerDestroy(ctx context.Context, input models.Pe
 	}); err != nil {
 		return false, err
 	}
+
+	r.hookExecutor.ExecutePostHooks(ctx, id, plugin.PerformerDestroyPost, input, nil)
+
 	return true, nil
 }
 
@@ -407,5 +437,10 @@ func (r *mutationResolver) PerformersDestroy(ctx context.Context, performerIDs [
 	}); err != nil {
 		return false, err
 	}
+
+	for _, id := range ids {
+		r.hookExecutor.ExecutePostHooks(ctx, id, plugin.PerformerDestroyPost, performerIDs, nil)
+	}
+
 	return true, nil
 }

pkg/api/resolver_mutation_plugin.go

@@ -2,40 +2,15 @@ package api
 
 import (
 	"context"
-	"net/http"
 
 	"github.com/stashapp/stash/pkg/logger"
 	"github.com/stashapp/stash/pkg/manager"
-	"github.com/stashapp/stash/pkg/manager/config"
 	"github.com/stashapp/stash/pkg/models"
-	"github.com/stashapp/stash/pkg/plugin/common"
 )
 
 func (r *mutationResolver) RunPluginTask(ctx context.Context, pluginID string, taskName string, args []*models.PluginArgInput) (string, error) {
-	currentUser := getCurrentUserID(ctx)
-
-	var cookie *http.Cookie
-	var err error
-	if currentUser != nil {
-		cookie, err = createSessionCookie(*currentUser)
-		if err != nil {
-			return "", err
-		}
-	}
-
-	config := config.GetInstance()
-	serverConnection := common.StashServerConnection{
-		Scheme:        "http",
-		Port:          config.GetPort(),
-		SessionCookie: cookie,
-		Dir:           config.GetConfigPath(),
-	}
-
-	if HasTLSConfig() {
-		serverConnection.Scheme = "https"
-	}
-
-	manager.GetInstance().RunPluginTask(pluginID, taskName, args, serverConnection)
+	m := manager.GetInstance()
+	m.RunPluginTask(ctx, pluginID, taskName, args)
 	return "todo", nil
 }
 

pkg/api/resolver_mutation_scene.go

@@ -10,9 +10,21 @@ import (
 	"github.com/stashapp/stash/pkg/manager"
 	"github.com/stashapp/stash/pkg/manager/config"
 	"github.com/stashapp/stash/pkg/models"
+	"github.com/stashapp/stash/pkg/plugin"
 	"github.com/stashapp/stash/pkg/utils"
 )
 
+func (r *mutationResolver) getScene(ctx context.Context, id int) (ret *models.Scene, err error) {
+	if err := r.withReadTxn(ctx, func(repo models.ReaderRepository) error {
+		ret, err = repo.Scene().Find(id)
+		return err
+	}); err != nil {
+		return nil, err
+	}
+
+	return ret, nil
+}
+
 func (r *mutationResolver) SceneUpdate(ctx context.Context, input models.SceneUpdateInput) (ret *models.Scene, err error) {
 	translator := changesetTranslator{
 		inputMap: getUpdateInputMap(ctx),
@@ -26,7 +38,8 @@ func (r *mutationResolver) SceneUpdate(ctx context.Context, input models.SceneUp
 		return nil, err
 	}
 
-	return ret, nil
+	r.hookExecutor.ExecutePostHooks(ctx, ret.ID, plugin.SceneUpdatePost, input, translator.getFields())
+	return r.getScene(ctx, ret.ID)
 }
 
 func (r *mutationResolver) ScenesUpdate(ctx context.Context, input []*models.SceneUpdateInput) (ret []*models.Scene, err error) {
@@ -52,7 +65,24 @@ func (r *mutationResolver) ScenesUpdate(ctx context.Context, input []*models.Sce
 		return nil, err
 	}
 
-	return ret, nil
+	// execute post hooks outside of txn
+	var newRet []*models.Scene
+	for i, scene := range ret {
+		translator := changesetTranslator{
+			inputMap: inputMaps[i],
+		}
+
+		r.hookExecutor.ExecutePostHooks(ctx, scene.ID, plugin.SceneUpdatePost, input, translator.getFields())
+
+		scene, err = r.getScene(ctx, scene.ID)
+		if err != nil {
+			return nil, err
+		}
+
+		newRet = append(newRet, scene)
+	}
+
+	return newRet, nil
 }
 
 func (r *mutationResolver) sceneUpdate(input models.SceneUpdateInput, translator changesetTranslator, repo models.Repository) (*models.Scene, error) {
@@ -281,7 +311,20 @@ func (r *mutationResolver) BulkSceneUpdate(ctx context.Context, input models.Bul
 		return nil, err
 	}
 
-	return ret, nil
+	// execute post hooks outside of txn
+	var newRet []*models.Scene
+	for _, scene := range ret {
+		r.hookExecutor.ExecutePostHooks(ctx, scene.ID, plugin.SceneUpdatePost, input, translator.getFields())
+
+		scene, err = r.getScene(ctx, scene.ID)
+		if err != nil {
+			return nil, err
+		}
+
+		newRet = append(newRet, scene)
+	}
+
+	return newRet, nil
 }
 
 func adjustIDs(existingIDs []int, updateIDs models.BulkUpdateIds) []int {
@@ -393,6 +436,9 @@ func (r *mutationResolver) SceneDestroy(ctx context.Context, input models.SceneD
 		manager.DeleteSceneFile(scene)
 	}
 
+	// call post hook after performing the other actions
+	r.hookExecutor.ExecutePostHooks(ctx, scene.ID, plugin.SceneDestroyPost, input, nil)
+
 	return true, nil
 }
 
@@ -442,11 +488,25 @@ func (r *mutationResolver) ScenesDestroy(ctx context.Context, input models.Scene
 		if input.DeleteFile != nil && *input.DeleteFile {
 			manager.DeleteSceneFile(scene)
 		}
+
+		// call post hook after performing the other actions
+		r.hookExecutor.ExecutePostHooks(ctx, scene.ID, plugin.SceneDestroyPost, input, nil)
 	}
 
 	return true, nil
 }
 
+func (r *mutationResolver) getSceneMarker(ctx context.Context, id int) (ret *models.SceneMarker, err error) {
+	if err := r.withReadTxn(ctx, func(repo models.ReaderRepository) error {
+		ret, err = repo.SceneMarker().Find(id)
+		return err
+	}); err != nil {
+		return nil, err
+	}
+
+	return ret, nil
+}
+
 func (r *mutationResolver) SceneMarkerCreate(ctx context.Context, input models.SceneMarkerCreateInput) (*models.SceneMarker, error) {
 	primaryTagID, err := strconv.Atoi(input.PrimaryTagID)
 	if err != nil {
@@ -473,7 +533,13 @@ func (r *mutationResolver) SceneMarkerCreate(ctx context.Context, input models.S
 		return nil, err
 	}
 
-	return r.changeMarker(ctx, create, newSceneMarker, tagIDs)
+	ret, err := r.changeMarker(ctx, create, newSceneMarker, tagIDs)
+	if err != nil {
+		return nil, err
+	}
+
+	r.hookExecutor.ExecutePostHooks(ctx, ret.ID, plugin.SceneMarkerCreatePost, input, nil)
+	return r.getSceneMarker(ctx, ret.ID)
 }
 
 func (r *mutationResolver) SceneMarkerUpdate(ctx context.Context, input models.SceneMarkerUpdateInput) (*models.SceneMarker, error) {
@@ -507,7 +573,16 @@ func (r *mutationResolver) SceneMarkerUpdate(ctx context.Context, input models.S
 		return nil, err
 	}
 
-	return r.changeMarker(ctx, update, updatedSceneMarker, tagIDs)
+	ret, err := r.changeMarker(ctx, update, updatedSceneMarker, tagIDs)
+	if err != nil {
+		return nil, err
+	}
+
+	translator := changesetTranslator{
+		inputMap: getUpdateInputMap(ctx),
+	}
+	r.hookExecutor.ExecutePostHooks(ctx, ret.ID, plugin.SceneMarkerUpdatePost, input, translator.getFields())
+	return r.getSceneMarker(ctx, ret.ID)
 }
 
 func (r *mutationResolver) SceneMarkerDestroy(ctx context.Context, id string) (bool, error) {
@@ -544,6 +619,8 @@ func (r *mutationResolver) SceneMarkerDestroy(ctx context.Context, id string) (b
 
 	postCommitFunc()
 
+	r.hookExecutor.ExecutePostHooks(ctx, markerID, plugin.SceneMarkerDestroyPost, id, nil)
+
 	return true, nil
 }
 
@@ -651,9 +728,9 @@ func (r *mutationResolver) SceneResetO(ctx context.Context, id string) (ret int,
 
 func (r *mutationResolver) SceneGenerateScreenshot(ctx context.Context, id string, at *float64) (string, error) {
 	if at != nil {
-		manager.GetInstance().GenerateScreenshot(id, *at)
+		manager.GetInstance().GenerateScreenshot(ctx, id, *at)
 	} else {
-		manager.GetInstance().GenerateDefaultScreenshot(id)
+		manager.GetInstance().GenerateDefaultScreenshot(ctx, id)
 	}
 
 	return "todo", nil

pkg/api/resolver_mutation_stash_box.go

@@ -24,6 +24,6 @@ func (r *mutationResolver) SubmitStashBoxFingerprints(ctx context.Context, input
 }
 
 func (r *mutationResolver) StashBoxBatchPerformerTag(ctx context.Context, input models.StashBoxBatchPerformerTagInput) (string, error) {
-	jobID := manager.GetInstance().StashBoxBatchPerformerTag(input)
+	jobID := manager.GetInstance().StashBoxBatchPerformerTag(ctx, input)
 	return strconv.Itoa(jobID), nil
 }

pkg/api/resolver_mutation_studio.go

@@ -8,9 +8,21 @@ import (
 
 	"github.com/stashapp/stash/pkg/manager"
 	"github.com/stashapp/stash/pkg/models"
+	"github.com/stashapp/stash/pkg/plugin"
 	"github.com/stashapp/stash/pkg/utils"
 )
 
+func (r *mutationResolver) getStudio(ctx context.Context, id int) (ret *models.Studio, err error) {
+	if err := r.withReadTxn(ctx, func(repo models.ReaderRepository) error {
+		ret, err = repo.Studio().Find(id)
+		return err
+	}); err != nil {
+		return nil, err
+	}
+
+	return ret, nil
+}
+
 func (r *mutationResolver) StudioCreate(ctx context.Context, input models.StudioCreateInput) (*models.Studio, error) {
 	// generate checksum from studio name rather than image
 	checksum := utils.MD5FromString(input.Name)
@@ -82,7 +94,8 @@ func (r *mutationResolver) StudioCreate(ctx context.Context, input models.Studio
 		return nil, err
 	}
 
-	return studio, nil
+	r.hookExecutor.ExecutePostHooks(ctx, studio.ID, plugin.StudioCreatePost, input, nil)
+	return r.getStudio(ctx, studio.ID)
 }
 
 func (r *mutationResolver) StudioUpdate(ctx context.Context, input models.StudioUpdateInput) (*models.Studio, error) {
@@ -162,7 +175,8 @@ func (r *mutationResolver) StudioUpdate(ctx context.Context, input models.Studio
 		return nil, err
 	}
 
-	return studio, nil
+	r.hookExecutor.ExecutePostHooks(ctx, studio.ID, plugin.StudioUpdatePost, input, translator.getFields())
+	return r.getStudio(ctx, studio.ID)
 }
 
 func (r *mutationResolver) StudioDestroy(ctx context.Context, input models.StudioDestroyInput) (bool, error) {
@@ -176,6 +190,9 @@ func (r *mutationResolver) StudioDestroy(ctx context.Context, input models.Studi
 	}); err != nil {
 		return false, err
 	}
+
+	r.hookExecutor.ExecutePostHooks(ctx, id, plugin.StudioDestroyPost, input, nil)
+
 	return true, nil
 }
 
@@ -197,5 +214,10 @@ func (r *mutationResolver) StudiosDestroy(ctx context.Context, studioIDs []strin
 	}); err != nil {
 		return false, err
 	}
+
+	for _, id := range ids {
+		r.hookExecutor.ExecutePostHooks(ctx, id, plugin.StudioDestroyPost, studioIDs, nil)
+	}
+
 	return true, nil
 }

pkg/api/resolver_mutation_tag.go

@@ -7,10 +7,22 @@ import (
 	"time"
 
 	"github.com/stashapp/stash/pkg/models"
+	"github.com/stashapp/stash/pkg/plugin"
 	"github.com/stashapp/stash/pkg/tag"
 	"github.com/stashapp/stash/pkg/utils"
 )
 
+func (r *mutationResolver) getTag(ctx context.Context, id int) (ret *models.Tag, err error) {
+	if err := r.withReadTxn(ctx, func(repo models.ReaderRepository) error {
+		ret, err = repo.Tag().Find(id)
+		return err
+	}); err != nil {
+		return nil, err
+	}
+
+	return ret, nil
+}
+
 func (r *mutationResolver) TagCreate(ctx context.Context, input models.TagCreateInput) (*models.Tag, error) {
 	// Populate a new tag from the input
 	currentTime := time.Now()
@@ -68,7 +80,8 @@ func (r *mutationResolver) TagCreate(ctx context.Context, input models.TagCreate
 		return nil, err
 	}
 
-	return t, nil
+	r.hookExecutor.ExecutePostHooks(ctx, t.ID, plugin.TagCreatePost, input, nil)
+	return r.getTag(ctx, t.ID)
 }
 
 func (r *mutationResolver) TagUpdate(ctx context.Context, input models.TagUpdateInput) (*models.Tag, error) {
@@ -153,7 +166,8 @@ func (r *mutationResolver) TagUpdate(ctx context.Context, input models.TagUpdate
 		return nil, err
 	}
 
-	return t, nil
+	r.hookExecutor.ExecutePostHooks(ctx, t.ID, plugin.TagUpdatePost, input, translator.getFields())
+	return r.getTag(ctx, t.ID)
 }
 
 func (r *mutationResolver) TagDestroy(ctx context.Context, input models.TagDestroyInput) (bool, error) {
@@ -167,6 +181,9 @@ func (r *mutationResolver) TagDestroy(ctx context.Context, input models.TagDestr
 	}); err != nil {
 		return false, err
 	}
+
+	r.hookExecutor.ExecutePostHooks(ctx, tagID, plugin.TagDestroyPost, input, nil)
+
 	return true, nil
 }
 
@@ -188,5 +205,10 @@ func (r *mutationResolver) TagsDestroy(ctx context.Context, tagIDs []string) (bo
 	}); err != nil {
 		return false, err
 	}
+
+	for _, id := range ids {
+		r.hookExecutor.ExecutePostHooks(ctx, id, plugin.TagDestroyPost, tagIDs, nil)
+	}
+
 	return true, nil
 }

pkg/api/resolver_mutation_tag_test.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/stashapp/stash/pkg/models"
 	"github.com/stashapp/stash/pkg/models/mocks"
+	"github.com/stashapp/stash/pkg/plugin"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/mock"
@@ -15,7 +16,8 @@ import (
 // TODO - move this into a common area
 func newResolver() *Resolver {
 	return &Resolver{
-		txnManager: mocks.NewTransactionManager(),
+		txnManager:   mocks.NewTransactionManager(),
+		hookExecutor: &mockHookExecutor{},
 	}
 }
 
@@ -26,6 +28,11 @@ const existingTagID = 1
 const existingTagName = "existingTagName"
 const newTagID = 2
 
+type mockHookExecutor struct{}
+
+func (*mockHookExecutor) ExecutePostHooks(ctx context.Context, id int, hookType plugin.HookTriggerEnum, input interface{}, inputFields []string) {
+}
+
 func TestTagCreate(t *testing.T) {
 	r := newResolver()
 
@@ -84,10 +91,12 @@ func TestTagCreate(t *testing.T) {
 
 	tagRW.On("Query", tagFilterForName(tagName), findFilter).Return(nil, 0, nil).Once()
 	tagRW.On("Query", tagFilterForAlias(tagName), findFilter).Return(nil, 0, nil).Once()
-	tagRW.On("Create", mock.AnythingOfType("models.Tag")).Return(&models.Tag{
+	newTag := &models.Tag{
 		ID:   newTagID,
 		Name: tagName,
-	}, nil)
+	}
+	tagRW.On("Create", mock.AnythingOfType("models.Tag")).Return(newTag, nil)
+	tagRW.On("Find", newTagID).Return(newTag, nil)
 
 	tag, err := r.Mutation().TagCreate(context.TODO(), models.TagCreateInput{
 		Name: tagName,

pkg/api/server.go

@@ -29,6 +29,7 @@ import (
 	"github.com/stashapp/stash/pkg/manager/config"
 	"github.com/stashapp/stash/pkg/manager/paths"
 	"github.com/stashapp/stash/pkg/models"
+	"github.com/stashapp/stash/pkg/session"
 	"github.com/stashapp/stash/pkg/utils"
 )
 
@@ -41,11 +42,6 @@ var uiBox *packr.Box
 //var legacyUiBox *packr.Box
 var loginUIBox *packr.Box
 
-const (
-	ApiKeyHeader    = "ApiKey"
-	ApiKeyParameter = "apikey"
-)
-
 func allowUnauthenticated(r *http.Request) bool {
 	return strings.HasPrefix(r.URL.Path, "/login") || r.URL.Path == "/css"
 }
@@ -53,44 +49,26 @@ func allowUnauthenticated(r *http.Request) bool {
 func authenticateHandler() func(http.Handler) http.Handler {
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-			c := config.GetInstance()
-			ctx := r.Context()
-
-			// translate api key into current user, if present
-			userID := ""
-			apiKey := r.Header.Get(ApiKeyHeader)
-			var err error
-
-			// try getting the api key as a query parameter
-			if apiKey == "" {
-				apiKey = r.URL.Query().Get(ApiKeyParameter)
-			}
-
-			if apiKey != "" {
-				// match against configured API and set userID to the
-				// configured username. In future, we'll want to
-				// get the username from the key.
-				if c.GetAPIKey() != apiKey {
-					w.Header().Add("WWW-Authenticate", `FormBased`)
-					w.WriteHeader(http.StatusUnauthorized)
+			userID, err := manager.GetInstance().SessionStore.Authenticate(w, r)
+			if err != nil {
+				if err != session.ErrUnauthorized {
+					w.WriteHeader(http.StatusInternalServerError)
+					_, err = w.Write([]byte(err.Error()))
+					if err != nil {
+						logger.Error(err)
+					}
 					return
 				}
 
-				userID = c.GetUsername()
-			} else {
-				// handle session
-				userID, err = getSessionUserID(w, r)
-			}
-
-			if err != nil {
-				w.WriteHeader(http.StatusInternalServerError)
-				_, err = w.Write([]byte(err.Error()))
-				if err != nil {
-					logger.Error(err)
-				}
+				// unauthorized error
+				w.Header().Add("WWW-Authenticate", `FormBased`)
+				w.WriteHeader(http.StatusUnauthorized)
 				return
 			}
 
+			c := config.GetInstance()
+			ctx := r.Context()
+
 			// handle redirect if no user and user is required
 			if userID == "" && c.HasCredentials() && !allowUnauthenticated(r) {
 				// if we don't have a userID, then redirect
@@ -112,7 +90,7 @@ func authenticateHandler() func(http.Handler) http.Handler {
 				return
 			}
 
-			ctx = context.WithValue(ctx, ContextUser, userID)
+			ctx = session.SetCurrentUserID(ctx, userID)
 
 			r = r.WithContext(ctx)
 
@@ -121,6 +99,16 @@ func authenticateHandler() func(http.Handler) http.Handler {
 	}
 }
 
+func visitedPluginHandler() func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			// get the visited plugins and set them in the context
+
+			next.ServeHTTP(w, r)
+		})
+	}
+}
+
 const loginEndPoint = "/login"
 
 func Start() {
@@ -128,13 +116,15 @@ func Start() {
 	//legacyUiBox = packr.New("UI Box", "../../ui/v1/dist/stash-frontend")
 	loginUIBox = packr.New("Login UI Box", "../../ui/login")
 
-	initSessionStore()
 	initialiseImages()
 
 	r := chi.NewRouter()
 
 	r.Use(middleware.Heartbeat("/healthz"))
 	r.Use(authenticateHandler())
+	visitedPluginHandler := manager.GetInstance().SessionStore.VisitedPluginHandler()
+	r.Use(visitedPluginHandler)
+
 	r.Use(middleware.Recoverer)
 
 	c := config.GetInstance()
@@ -155,8 +145,10 @@ func Start() {
 	}
 
 	txnManager := manager.GetInstance().TxnManager
+	pluginCache := manager.GetInstance().PluginCache
 	resolver := &Resolver{
-		txnManager: txnManager,
+		txnManager:   txnManager,
+		hookExecutor: pluginCache,
 	}
 
 	gqlSrv := gqlHandler.New(models.NewExecutableSchema(models.Config{Resolvers: resolver}))
@@ -184,7 +176,8 @@ func Start() {
 	}
 
 	// register GQL handler with plugin cache
-	manager.GetInstance().PluginCache.RegisterGQLHandler(gqlHandlerFunc)
+	// chain the visited plugin handler
+	manager.GetInstance().PluginCache.RegisterGQLHandler(visitedPluginHandler(http.HandlerFunc(gqlHandlerFunc)))
 
 	r.HandleFunc("/graphql", gqlHandlerFunc)
 	r.HandleFunc("/playground", gqlPlayground.Handler("GraphQL playground", "/graphql"))
@@ -358,15 +351,6 @@ func makeTLSConfig() *tls.Config {
 	return tlsConfig
 }
 
-func HasTLSConfig() bool {
-	ret, _ := utils.FileExists(paths.GetSSLCert())
-	if ret {
-		ret, _ = utils.FileExists(paths.GetSSLKey())
-	}
-
-	return ret
-}
-
 type contextKey struct {
 	name string
 }

pkg/api/session.go

@@ -1,15 +1,13 @@
 package api
 
 import (
-	"context"
 	"fmt"
 	"html/template"
 	"net/http"
 
+	"github.com/stashapp/stash/pkg/manager"
 	"github.com/stashapp/stash/pkg/manager/config"
-
-	"github.com/gorilla/securecookie"
-	"github.com/gorilla/sessions"
+	"github.com/stashapp/stash/pkg/session"
 )
 
 const cookieName = "session"
@@ -19,17 +17,11 @@ const userIDKey = "userID"
 
 const returnURLParam = "returnURL"
 
-var sessionStore = sessions.NewCookieStore(config.GetInstance().GetSessionStoreKey())
-
 type loginTemplateData struct {
 	URL   string
 	Error string
 }
 
-func initSessionStore() {
-	sessionStore.MaxAge(config.GetInstance().GetMaxSessionAge())
-}
-
 func redirectToLogin(w http.ResponseWriter, returnURL string, loginError string) {
 	data, _ := loginUIBox.Find("login.html")
 	templ, err := template.New("Login").Parse(string(data))
@@ -59,22 +51,13 @@ func handleLogin(w http.ResponseWriter, r *http.Request) {
 		url = "/"
 	}
 
-	// ignore error - we want a new session regardless
-	newSession, _ := sessionStore.Get(r, cookieName)
-
-	username := r.FormValue("username")
-	password := r.FormValue("password")
-
-	// authenticate the user
-	if !config.GetInstance().ValidateCredentials(username, password) {
+	err := manager.GetInstance().SessionStore.Login(w, r)
+	if err == session.ErrInvalidCredentials {
 		// redirect back to the login page with an error
 		redirectToLogin(w, url, "Username or password is invalid")
 		return
 	}
 
-	newSession.Values[userIDKey] = username
-
-	err := newSession.Save(r, w)
 	if err != nil {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
@@ -84,17 +67,7 @@ func handleLogin(w http.ResponseWriter, r *http.Request) {
 }
 
 func handleLogout(w http.ResponseWriter, r *http.Request) {
-	session, err := sessionStore.Get(r, cookieName)
-	if err != nil {
-		http.Error(w, err.Error(), http.StatusInternalServerError)
-		return
-	}
-
-	delete(session.Values, userIDKey)
-	session.Options.MaxAge = -1
-
-	err = session.Save(r, w)
-	if err != nil {
+	if err := manager.GetInstance().SessionStore.Logout(w, r); err != nil {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
@@ -102,51 +75,3 @@ func handleLogout(w http.ResponseWriter, r *http.Request) {
 	// redirect to the login page if credentials are required
 	getLoginHandler(w, r)
 }
-
-func getSessionUserID(w http.ResponseWriter, r *http.Request) (string, error) {
-	session, err := sessionStore.Get(r, cookieName)
-	// ignore errors and treat as an empty user id, so that we handle expired
-	// cookie
-	if err != nil {
-		return "", nil
-	}
-
-	if !session.IsNew {
-		val := session.Values[userIDKey]
-
-		// refresh the cookie
-		err = session.Save(r, w)
-		if err != nil {
-			return "", err
-		}
-
-		ret, _ := val.(string)
-
-		return ret, nil
-	}
-
-	return "", nil
-}
-
-func getCurrentUserID(ctx context.Context) *string {
-	userCtxVal := ctx.Value(ContextUser)
-	if userCtxVal != nil {
-		currentUser := userCtxVal.(string)
-		return &currentUser
-	}
-
-	return nil
-}
-
-func createSessionCookie(username string) (*http.Cookie, error) {
-	session := sessions.NewSession(sessionStore, cookieName)
-	session.Values[userIDKey] = username
-
-	encoded, err := securecookie.EncodeMulti(session.Name(), session.Values,
-		sessionStore.Codecs...)
-	if err != nil {
-		return nil, err
-	}
-
-	return sessions.NewCookie(session.Name(), encoded, session.Options), nil
-}

pkg/job/job.go

@@ -55,6 +55,7 @@ type Job struct {
 	EndTime   *time.Time
 	AddTime   time.Time
 
+	outerCtx   context.Context
 	exec       JobExec
 	cancelFunc context.CancelFunc
 }

pkg/job/manager.go

@@ -4,6 +4,8 @@ import (
 	"context"
 	"sync"
 	"time"
+
+	"github.com/stashapp/stash/pkg/utils"
 )
 
 const maxGraveyardSize = 10
@@ -46,7 +48,7 @@ func (m *Manager) Stop() {
 }
 
 // Add queues a job.
-func (m *Manager) Add(description string, e JobExec) int {
+func (m *Manager) Add(ctx context.Context, description string, e JobExec) int {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
@@ -58,6 +60,7 @@ func (m *Manager) Add(description string, e JobExec) int {
 		Description: description,
 		AddTime:     t,
 		exec:        e,
+		outerCtx:    ctx,
 	}
 
 	m.queue = append(m.queue, &j)
@@ -74,7 +77,7 @@ func (m *Manager) Add(description string, e JobExec) int {
 
 // Start adds a job and starts it immediately, concurrently with any other
 // jobs.
-func (m *Manager) Start(description string, e JobExec) int {
+func (m *Manager) Start(ctx context.Context, description string, e JobExec) int {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
@@ -86,6 +89,7 @@ func (m *Manager) Start(description string, e JobExec) int {
 		Description: description,
 		AddTime:     t,
 		exec:        e,
+		outerCtx:    ctx,
 	}
 
 	m.queue = append(m.queue, &j)
@@ -173,7 +177,7 @@ func (m *Manager) dispatch(j *Job) (done chan struct{}) {
 	j.StartTime = &t
 	j.Status = StatusRunning
 
-	ctx, cancelFunc := context.WithCancel(context.Background())
+	ctx, cancelFunc := context.WithCancel(utils.ValueOnlyContext(j.outerCtx))
 	j.cancelFunc = cancelFunc
 
 	done = make(chan struct{})

pkg/job/manager_test.go

@@ -45,7 +45,7 @@ func TestAdd(t *testing.T) {
 
 	const jobName = "test job"
 	exec1 := newTestExec(make(chan struct{}))
-	jobID := m.Add(jobName, exec1)
+	jobID := m.Add(context.Background(), jobName, exec1)
 
 	// expect jobID to be the first ID
 	assert := assert.New(t)
@@ -80,7 +80,7 @@ func TestAdd(t *testing.T) {
 	// add another job to the queue
 	const otherJobName = "other job name"
 	exec2 := newTestExec(make(chan struct{}))
-	job2ID := m.Add(otherJobName, exec2)
+	job2ID := m.Add(context.Background(), otherJobName, exec2)
 
 	// expect status to be ready
 	j2 := m.GetJob(job2ID)
@@ -130,11 +130,11 @@ func TestCancel(t *testing.T) {
 	// add two jobs
 	const jobName = "test job"
 	exec1 := newTestExec(make(chan struct{}))
-	jobID := m.Add(jobName, exec1)
+	jobID := m.Add(context.Background(), jobName, exec1)
 
 	const otherJobName = "other job"
 	exec2 := newTestExec(make(chan struct{}))
-	job2ID := m.Add(otherJobName, exec2)
+	job2ID := m.Add(context.Background(), otherJobName, exec2)
 
 	// wait a tiny bit
 	time.Sleep(sleepTime)
@@ -198,11 +198,11 @@ func TestCancelAll(t *testing.T) {
 	// add two jobs
 	const jobName = "test job"
 	exec1 := newTestExec(make(chan struct{}))
-	jobID := m.Add(jobName, exec1)
+	jobID := m.Add(context.Background(), jobName, exec1)
 
 	const otherJobName = "other job"
 	exec2 := newTestExec(make(chan struct{}))
-	job2ID := m.Add(otherJobName, exec2)
+	job2ID := m.Add(context.Background(), otherJobName, exec2)
 
 	// wait a tiny bit
 	time.Sleep(sleepTime)
@@ -246,7 +246,7 @@ func TestSubscribe(t *testing.T) {
 	// add a job
 	const jobName = "test job"
 	exec1 := newTestExec(make(chan struct{}))
-	jobID := m.Add(jobName, exec1)
+	jobID := m.Add(context.Background(), jobName, exec1)
 
 	assert := assert.New(t)
 
@@ -326,7 +326,7 @@ func TestSubscribe(t *testing.T) {
 
 	// add another job and cancel it
 	exec2 := newTestExec(make(chan struct{}))
-	jobID = m.Add(jobName, exec2)
+	jobID = m.Add(context.Background(), jobName, exec2)
 
 	m.CancelJob(jobID)
 

pkg/manager/config/config.go

@@ -13,6 +13,7 @@ import (
 
 	"github.com/spf13/viper"
 
+	"github.com/stashapp/stash/pkg/manager/paths"
 	"github.com/stashapp/stash/pkg/models"
 	"github.com/stashapp/stash/pkg/utils"
 )
@@ -150,6 +151,15 @@ func (e MissingConfigError) Error() string {
 	return fmt.Sprintf("missing the following mandatory settings: %s", strings.Join(e.missingFields, ", "))
 }
 
+func HasTLSConfig() bool {
+	ret, _ := utils.FileExists(paths.GetSSLCert())
+	if ret {
+		ret, _ = utils.FileExists(paths.GetSSLKey())
+	}
+
+	return ret
+}
+
 type Instance struct {
 	cpuProfilePath string
 	isNewSystem    bool

pkg/manager/manager.go

@@ -19,6 +19,7 @@ import (
 	"github.com/stashapp/stash/pkg/models"
 	"github.com/stashapp/stash/pkg/plugin"
 	"github.com/stashapp/stash/pkg/scraper"
+	"github.com/stashapp/stash/pkg/session"
 	"github.com/stashapp/stash/pkg/sqlite"
 	"github.com/stashapp/stash/pkg/utils"
 )
@@ -31,6 +32,8 @@ type singleton struct {
 	FFMPEGPath  string
 	FFProbePath string
 
+	SessionStore *session.Store
+
 	JobManager *job.Manager
 
 	PluginCache  *plugin.Cache
@@ -100,6 +103,11 @@ func Initialize() *singleton {
 			if cfgFile != "" {
 				cfgFile = cfgFile + " "
 			}
+
+			// create temporary session store - this will be re-initialised
+			// after config is complete
+			instance.SessionStore = session.NewStore(cfg)
+
 			logger.Warnf("config file %snot found. Assuming new system...", cfgFile)
 		}
 
@@ -179,6 +187,8 @@ func (s *singleton) PostInit() error {
 
 	s.Paths = paths.NewPaths(s.Config.GetGeneratedPath())
 	s.RefreshConfig()
+	s.SessionStore = session.NewStore(s.Config)
+	s.PluginCache.RegisterSessionStore(s.SessionStore)
 
 	if err := s.PluginCache.LoadPlugins(); err != nil {
 		logger.Errorf("Error reading plugin configs: %s", err.Error())

pkg/manager/manager_tasks.go

@@ -60,7 +60,7 @@ func (s *singleton) ScanSubscribe(ctx context.Context) <-chan bool {
 	return s.scanSubs.subscribe(ctx)
 }
 
-func (s *singleton) Scan(input models.ScanMetadataInput) (int, error) {
+func (s *singleton) Scan(ctx context.Context, input models.ScanMetadataInput) (int, error) {
 	if err := s.validateFFMPEG(); err != nil {
 		return 0, err
 	}
@@ -71,10 +71,10 @@ func (s *singleton) Scan(input models.ScanMetadataInput) (int, error) {
 		subscriptions: s.scanSubs,
 	}
 
-	return s.JobManager.Add("Scanning...", &scanJob), nil
+	return s.JobManager.Add(ctx, "Scanning...", &scanJob), nil
 }
 
-func (s *singleton) Import() (int, error) {
+func (s *singleton) Import(ctx context.Context) (int, error) {
 	config := config.GetInstance()
 	metadataPath := config.GetMetadataPath()
 	if metadataPath == "" {
@@ -96,10 +96,10 @@ func (s *singleton) Import() (int, error) {
 		task.Start(&wg)
 	})
 
-	return s.JobManager.Add("Importing...", j), nil
+	return s.JobManager.Add(ctx, "Importing...", j), nil
 }
 
-func (s *singleton) Export() (int, error) {
+func (s *singleton) Export(ctx context.Context) (int, error) {
 	config := config.GetInstance()
 	metadataPath := config.GetMetadataPath()
 	if metadataPath == "" {
@@ -117,10 +117,10 @@ func (s *singleton) Export() (int, error) {
 		task.Start(&wg)
 	})
 
-	return s.JobManager.Add("Exporting...", j), nil
+	return s.JobManager.Add(ctx, "Exporting...", j), nil
 }
 
-func (s *singleton) RunSingleTask(t Task) int {
+func (s *singleton) RunSingleTask(ctx context.Context, t Task) int {
 	var wg sync.WaitGroup
 	wg.Add(1)
 
@@ -128,7 +128,7 @@ func (s *singleton) RunSingleTask(t Task) int {
 		t.Start(&wg)
 	})
 
-	return s.JobManager.Add(t.GetDescription(), j)
+	return s.JobManager.Add(ctx, t.GetDescription(), j)
 }
 
 func setGeneratePreviewOptionsInput(optionsInput *models.GeneratePreviewOptionsInput) {
@@ -159,7 +159,7 @@ func setGeneratePreviewOptionsInput(optionsInput *models.GeneratePreviewOptionsI
 	}
 }
 
-func (s *singleton) Generate(input models.GenerateMetadataInput) (int, error) {
+func (s *singleton) Generate(ctx context.Context, input models.GenerateMetadataInput) (int, error) {
 	if err := s.validateFFMPEG(); err != nil {
 		return 0, err
 	}
@@ -367,19 +367,19 @@ func (s *singleton) Generate(input models.GenerateMetadataInput) (int, error) {
 		logger.Info(fmt.Sprintf("Generate finished (%s)", elapsed))
 	})
 
-	return s.JobManager.Add("Generating...", j), nil
+	return s.JobManager.Add(ctx, "Generating...", j), nil
 }
 
-func (s *singleton) GenerateDefaultScreenshot(sceneId string) int {
-	return s.generateScreenshot(sceneId, nil)
+func (s *singleton) GenerateDefaultScreenshot(ctx context.Context, sceneId string) int {
+	return s.generateScreenshot(ctx, sceneId, nil)
 }
 
-func (s *singleton) GenerateScreenshot(sceneId string, at float64) int {
-	return s.generateScreenshot(sceneId, &at)
+func (s *singleton) GenerateScreenshot(ctx context.Context, sceneId string, at float64) int {
+	return s.generateScreenshot(ctx, sceneId, &at)
 }
 
 // generate default screenshot if at is nil
-func (s *singleton) generateScreenshot(sceneId string, at *float64) int {
+func (s *singleton) generateScreenshot(ctx context.Context, sceneId string, at *float64) int {
 	instance.Paths.Generated.EnsureTmpDir()
 
 	j := job.MakeJobExec(func(ctx context.Context, progress *job.Progress) {
@@ -413,19 +413,19 @@ func (s *singleton) generateScreenshot(sceneId string, at *float64) int {
 		logger.Infof("Generate screenshot finished")
 	})
 
-	return s.JobManager.Add(fmt.Sprintf("Generating screenshot for scene id %s", sceneId), j)
+	return s.JobManager.Add(ctx, fmt.Sprintf("Generating screenshot for scene id %s", sceneId), j)
 }
 
-func (s *singleton) AutoTag(input models.AutoTagMetadataInput) int {
+func (s *singleton) AutoTag(ctx context.Context, input models.AutoTagMetadataInput) int {
 	j := autoTagJob{
 		txnManager: s.TxnManager,
 		input:      input,
 	}
 
-	return s.JobManager.Add("Auto-tagging...", &j)
+	return s.JobManager.Add(ctx, "Auto-tagging...", &j)
 }
 
-func (s *singleton) Clean(input models.CleanMetadataInput) int {
+func (s *singleton) Clean(ctx context.Context, input models.CleanMetadataInput) int {
 	j := job.MakeJobExec(func(ctx context.Context, progress *job.Progress) {
 		var scenes []*models.Scene
 		var images []*models.Image
@@ -488,6 +488,7 @@ func (s *singleton) Clean(input models.CleanMetadataInput) int {
 			wg.Add(1)
 
 			task := CleanTask{
+				ctx:                 ctx,
 				TxnManager:          s.TxnManager,
 				Scene:               scene,
 				fileNamingAlgorithm: fileNamingAlgo,
@@ -514,6 +515,7 @@ func (s *singleton) Clean(input models.CleanMetadataInput) int {
 			wg.Add(1)
 
 			task := CleanTask{
+				ctx:        ctx,
 				TxnManager: s.TxnManager,
 				Image:      img,
 			}
@@ -538,6 +540,7 @@ func (s *singleton) Clean(input models.CleanMetadataInput) int {
 			wg.Add(1)
 
 			task := CleanTask{
+				ctx:        ctx,
 				TxnManager: s.TxnManager,
 				Gallery:    gallery,
 			}
@@ -552,10 +555,10 @@ func (s *singleton) Clean(input models.CleanMetadataInput) int {
 		s.scanSubs.notify()
 	})
 
-	return s.JobManager.Add("Cleaning...", j)
+	return s.JobManager.Add(ctx, "Cleaning...", j)
 }
 
-func (s *singleton) MigrateHash() int {
+func (s *singleton) MigrateHash(ctx context.Context) int {
 	j := job.MakeJobExec(func(ctx context.Context, progress *job.Progress) {
 		fileNamingAlgo := config.GetInstance().GetVideoFileNamingAlgorithm()
 		logger.Infof("Migrating generated files for %s naming hash", fileNamingAlgo.String())
@@ -596,7 +599,7 @@ func (s *singleton) MigrateHash() int {
 		logger.Info("Finished migrating")
 	})
 
-	return s.JobManager.Add("Migrating scene hashes...", j)
+	return s.JobManager.Add(ctx, "Migrating scene hashes...", j)
 }
 
 type totalsGenerate struct {
@@ -702,7 +705,7 @@ func (s *singleton) neededGenerate(scenes []*models.Scene, input models.Generate
 	return &totals
 }
 
-func (s *singleton) StashBoxBatchPerformerTag(input models.StashBoxBatchPerformerTagInput) int {
+func (s *singleton) StashBoxBatchPerformerTag(ctx context.Context, input models.StashBoxBatchPerformerTagInput) int {
 	j := job.MakeJobExec(func(ctx context.Context, progress *job.Progress) {
 		logger.Infof("Initiating stash-box batch performer tag")
 
@@ -800,5 +803,5 @@ func (s *singleton) StashBoxBatchPerformerTag(input models.StashBoxBatchPerforme
 		}
 	})
 
-	return s.JobManager.Add("Batch stash-box performer tag...", j)
+	return s.JobManager.Add(ctx, "Batch stash-box performer tag...", j)
 }

pkg/manager/task_clean.go

@@ -10,10 +10,12 @@ import (
 	"github.com/stashapp/stash/pkg/logger"
 	"github.com/stashapp/stash/pkg/manager/config"
 	"github.com/stashapp/stash/pkg/models"
+	"github.com/stashapp/stash/pkg/plugin"
 	"github.com/stashapp/stash/pkg/utils"
 )
 
 type CleanTask struct {
+	ctx                 context.Context
 	TxnManager          models.TransactionManager
 	Scene               *models.Scene
 	Gallery             *models.Gallery
@@ -158,6 +160,8 @@ func (t *CleanTask) deleteScene(sceneID int) {
 	postCommitFunc()
 
 	DeleteGeneratedSceneFiles(scene, t.fileNamingAlgorithm)
+
+	GetInstance().PluginCache.ExecutePostHooks(t.ctx, sceneID, plugin.SceneDestroyPost, nil, nil)
 }
 
 func (t *CleanTask) deleteGallery(galleryID int) {
@@ -168,6 +172,8 @@ func (t *CleanTask) deleteGallery(galleryID int) {
 		logger.Errorf("Error deleting gallery from database: %s", err.Error())
 		return
 	}
+
+	GetInstance().PluginCache.ExecutePostHooks(t.ctx, galleryID, plugin.GalleryDestroyPost, nil, nil)
 }
 
 func (t *CleanTask) deleteImage(imageID int) {
@@ -185,20 +191,8 @@ func (t *CleanTask) deleteImage(imageID int) {
 	if pathErr != nil {
 		logger.Errorf("Error deleting thumbnail image from cache: %s", pathErr)
 	}
-}
 
-func (t *CleanTask) fileExists(filename string) (bool, error) {
-	info, err := os.Stat(filename)
-	if os.IsNotExist(err) {
-		return false, nil
-	}
-
-	// handle if error is something else
-	if err != nil {
-		return false, err
-	}
-
-	return !info.IsDir(), nil
+	GetInstance().PluginCache.ExecutePostHooks(t.ctx, imageID, plugin.ImageDestroyPost, nil, nil)
 }
 
 func getStashFromPath(pathToCheck string) *models.StashConfig {

pkg/manager/task_plugin.go

@@ -7,13 +7,12 @@ import (
 	"github.com/stashapp/stash/pkg/job"
 	"github.com/stashapp/stash/pkg/logger"
 	"github.com/stashapp/stash/pkg/models"
-	"github.com/stashapp/stash/pkg/plugin/common"
 )
 
-func (s *singleton) RunPluginTask(pluginID string, taskName string, args []*models.PluginArgInput, serverConnection common.StashServerConnection) int {
-	j := job.MakeJobExec(func(ctx context.Context, progress *job.Progress) {
+func (s *singleton) RunPluginTask(ctx context.Context, pluginID string, taskName string, args []*models.PluginArgInput) int {
+	j := job.MakeJobExec(func(jobCtx context.Context, progress *job.Progress) {
 		pluginProgress := make(chan float64)
-		task, err := s.PluginCache.CreateTask(pluginID, taskName, serverConnection, args, pluginProgress)
+		task, err := s.PluginCache.CreateTask(ctx, pluginID, taskName, args, pluginProgress)
 		if err != nil {
 			logger.Errorf("Error creating plugin task: %s", err.Error())
 			return
@@ -48,7 +47,7 @@ func (s *singleton) RunPluginTask(pluginID string, taskName string, args []*mode
 				return
 			case p := <-pluginProgress:
 				progress.SetPercent(p)
-			case <-ctx.Done():
+			case <-jobCtx.Done():
 				if err := task.Stop(); err != nil {
 					logger.Errorf("Error stopping plugin operation: %s", err.Error())
 				}
@@ -57,5 +56,5 @@ func (s *singleton) RunPluginTask(pluginID string, taskName string, args []*mode
 		}
 	})
 
-	return s.JobManager.Add(fmt.Sprintf("Running plugin task: %s", taskName), j)
+	return s.JobManager.Add(ctx, fmt.Sprintf("Running plugin task: %s", taskName), j)
 }

pkg/manager/task_scan.go

@@ -21,6 +21,7 @@ import (
 	"github.com/stashapp/stash/pkg/logger"
 	"github.com/stashapp/stash/pkg/manager/config"
 	"github.com/stashapp/stash/pkg/models"
+	"github.com/stashapp/stash/pkg/plugin"
 	"github.com/stashapp/stash/pkg/scene"
 	"github.com/stashapp/stash/pkg/utils"
 )
@@ -102,6 +103,7 @@ func (j *ScanJob) Execute(ctx context.Context, progress *job.Progress) {
 				GeneratePhash:        utils.IsTrue(input.ScanGeneratePhashes),
 				progress:             progress,
 				CaseSensitiveFs:      csFs,
+				ctx:                  ctx,
 			}
 
 			go func() {
@@ -201,6 +203,7 @@ func (j *ScanJob) neededScan(ctx context.Context, paths []*models.StashConfig) (
 }
 
 type ScanTask struct {
+	ctx                  context.Context
 	TxnManager           models.TransactionManager
 	FilePath             string
 	UseFileMetadata      bool
@@ -424,6 +427,8 @@ func (t *ScanTask) scanGallery() {
 					if err != nil {
 						return err
 					}
+
+					GetInstance().PluginCache.ExecutePostHooks(t.ctx, g.ID, plugin.GalleryUpdatePost, nil, nil)
 				}
 			} else {
 				currentTime := time.Now()
@@ -461,6 +466,8 @@ func (t *ScanTask) scanGallery() {
 						return err
 					}
 					scanImages = true
+
+					GetInstance().PluginCache.ExecutePostHooks(t.ctx, g.ID, plugin.GalleryCreatePost, nil, nil)
 				}
 			}
 
@@ -787,6 +794,8 @@ func (t *ScanTask) scanScene() *models.Scene {
 			}); err != nil {
 				return logError(err)
 			}
+
+			GetInstance().PluginCache.ExecutePostHooks(t.ctx, s.ID, plugin.SceneUpdatePost, nil, nil)
 		}
 	} else {
 		logger.Infof("%s doesn't exist. Creating new item...", t.FilePath)
@@ -826,6 +835,8 @@ func (t *ScanTask) scanScene() *models.Scene {
 		}); err != nil {
 			return logError(err)
 		}
+
+		GetInstance().PluginCache.ExecutePostHooks(t.ctx, retScene.ID, plugin.SceneCreatePost, nil, nil)
 	}
 
 	return retScene
@@ -895,6 +906,8 @@ func (t *ScanTask) rescanScene(s *models.Scene, fileModTime time.Time) (*models.
 		return nil, err
 	}
 
+	GetInstance().PluginCache.ExecutePostHooks(t.ctx, ret.ID, plugin.SceneUpdatePost, nil, nil)
+
 	// leave the generated files as is - the scene file may have been moved
 	// elsewhere
 
@@ -1081,6 +1094,8 @@ func (t *ScanTask) scanImage() {
 					logger.Error(err.Error())
 					return
 				}
+
+				GetInstance().PluginCache.ExecutePostHooks(t.ctx, i.ID, plugin.ImageUpdatePost, nil, nil)
 			}
 		} else {
 			logger.Infof("%s doesn't exist.  Creating new item...", image.PathDisplayName(t.FilePath))
@@ -1111,6 +1126,8 @@ func (t *ScanTask) scanImage() {
 				logger.Error(err.Error())
 				return
 			}
+
+			GetInstance().PluginCache.ExecutePostHooks(t.ctx, i.ID, plugin.ImageCreatePost, nil, nil)
 		}
 
 		if t.zipGallery != nil {
@@ -1186,6 +1203,8 @@ func (t *ScanTask) rescanImage(i *models.Image, fileModTime time.Time) (*models.
 		}
 	}
 
+	GetInstance().PluginCache.ExecutePostHooks(t.ctx, ret.ID, plugin.ImageUpdatePost, nil, nil)
+
 	return ret, nil
 }
 

pkg/plugin/common/msg.go

@@ -2,6 +2,10 @@ package common
 
 import "net/http"
 
+const (
+	HookContextKey = "hookContext"
+)
+
 // StashServerConnection represents the connection details needed for a
 // plugin instance to connect to its parent stash server.
 type StashServerConnection struct {
@@ -97,3 +101,12 @@ func (o *PluginOutput) SetError(err error) {
 	errStr := err.Error()
 	o.Error = &errStr
 }
+
+// HookContext is passed as a PluginArgValue and indicates what hook triggered
+// this plugin task.
+type HookContext struct {
+	ID          int         `json:"id,omitempty"`
+	Type        string      `json:"type"`
+	Input       interface{} `json:"input"`
+	InputFields []string    `json:"inputFields,omitempty"`
+}

pkg/plugin/config.go

@@ -54,6 +54,9 @@ type Config struct {
 
 	// The task configurations for tasks provided by this plugin.
 	Tasks []*OperationConfig `yaml:"tasks"`
+
+	// The hooks configurations for hooks registered by this plugin.
+	Hooks []*HookConfig `yaml:"hooks"`
 }
 
 func (c Config) getPluginTasks(includePlugin bool) []*models.PluginTask {
@@ -74,6 +77,34 @@ func (c Config) getPluginTasks(includePlugin bool) []*models.PluginTask {
 	return ret
 }
 
+func (c Config) getPluginHooks(includePlugin bool) []*models.PluginHook {
+	var ret []*models.PluginHook
+
+	for _, o := range c.Hooks {
+		hook := &models.PluginHook{
+			Name:        o.Name,
+			Description: &o.Description,
+			Hooks:       convertHooks(o.TriggeredBy),
+		}
+
+		if includePlugin {
+			hook.Plugin = c.toPlugin()
+		}
+		ret = append(ret, hook)
+	}
+
+	return ret
+}
+
+func convertHooks(hooks []HookTriggerEnum) []string {
+	var ret []string
+	for _, h := range hooks {
+		ret = append(ret, h.String())
+	}
+
+	return ret
+}
+
 func (c Config) getName() string {
 	if c.Name != "" {
 		return c.Name
@@ -90,6 +121,7 @@ func (c Config) toPlugin() *models.Plugin {
 		URL:         c.URL,
 		Version:     c.Version,
 		Tasks:       c.getPluginTasks(false),
+		Hooks:       c.getPluginHooks(false),
 	}
 }
 
@@ -103,6 +135,19 @@ func (c Config) getTask(name string) *OperationConfig {
 	return nil
 }
 
+func (c Config) getHooks(hookType HookTriggerEnum) []*HookConfig {
+	var ret []*HookConfig
+	for _, h := range c.Hooks {
+		for _, t := range h.TriggeredBy {
+			if hookType == t {
+				ret = append(ret, h)
+			}
+		}
+	}
+
+	return ret
+}
+
 func (c Config) getConfigPath() string {
 	return filepath.Dir(c.path)
 }
@@ -194,6 +239,13 @@ type OperationConfig struct {
 	DefaultArgs map[string]string `yaml:"defaultArgs"`
 }
 
+type HookConfig struct {
+	OperationConfig `yaml:",inline"`
+
+	// A list of stash operations that will be used to trigger this hook operation.
+	TriggeredBy []HookTriggerEnum `yaml:"triggeredBy"`
+}
+
 func loadPluginFromYAML(reader io.Reader) (*Config, error) {
 	ret := &Config{}
 

pkg/plugin/examples/js/js.js

@@ -11,6 +11,8 @@ function main() {
             doLongTask();
         } else if (modeArg == "indef") {
             doIndefiniteTask();
+        } else if (modeArg == "hook") {
+            doHookTask();
         }
     } catch (err) {
         return {
@@ -207,4 +209,9 @@ function doIndefiniteTask() {
     }
 }
 
+function doHookTask() {
+    log.Info("JS Hook called!");
+    log.Info(input.Args);
+}
+
 main();

pkg/plugin/examples/js/js.yml

@@ -24,4 +24,35 @@ tasks:
     description: Sleeps for 100 seconds - interruptable
     defaultArgs:
       mode: long
-      
+hooks:
+  - name: Log scene marker create/update
+    description: Logs some stuff when creating/updating scene marker.
+    triggeredBy: 
+      - SceneMarker.Create.Post
+      - SceneMarker.Update.Post
+      - SceneMarker.Delete.Post
+      - Scene.Create.Post
+      - Scene.Update.Post
+      - Scene.Destroy.Post
+      - Image.Create.Post
+      - Image.Update.Post
+      - Image.Destroy.Post
+      - Gallery.Create.Post
+      - Gallery.Update.Post
+      - Gallery.Destroy.Post
+      - Movie.Create.Post
+      - Movie.Update.Post
+      - Movie.Destroy.Post
+      - Performer.Create.Post
+      - Performer.Update.Post
+      - Performer.Destroy.Post
+      - Studio.Create.Post
+      - Studio.Update.Post
+      - Studio.Destroy.Post
+      - Tag.Create.Post
+      - Tag.Update.Post
+      - Tag.Destroy.Post
+    defaultArgs:
+      mode: hook
+    
+    

pkg/plugin/examples/python/stash_interface.py

@@ -17,7 +17,10 @@ class StashInterface:
 
 		self.url = scheme + "://localhost:" + str(self.port) + "/graphql"
 
-		# TODO - cookies
+		# Session cookie for authentication
+		self.cookies = {
+			'session': conn.get('SessionCookie').get('Value')
+		}
 
 	def __callGraphQL(self, query, variables = None):
 		json = {}
@@ -26,7 +29,7 @@ class StashInterface:
 			json['variables'] = variables
 		
 		# handle cookies
-		response = requests.post(self.url, json=json, headers=self.headers)
+		response = requests.post(self.url, json=json, headers=self.headers, cookies=self.cookies)
 		
 		if response.status_code == 200:
 			result = response.json()

pkg/plugin/hooks.go

@@ -0,0 +1,125 @@
+package plugin
+
+import (
+	"github.com/stashapp/stash/pkg/plugin/common"
+)
+
+type HookTriggerEnum string
+
+// Scan-related hooks are current disabled until post-hook execution is
+// integrated.
+
+const (
+	SceneMarkerCreatePost  HookTriggerEnum = "SceneMarker.Create.Post"
+	SceneMarkerUpdatePost  HookTriggerEnum = "SceneMarker.Update.Post"
+	SceneMarkerDestroyPost HookTriggerEnum = "SceneMarker.Destroy.Post"
+
+	SceneCreatePost  HookTriggerEnum = "Scene.Create.Post"
+	SceneUpdatePost  HookTriggerEnum = "Scene.Update.Post"
+	SceneDestroyPost HookTriggerEnum = "Scene.Destroy.Post"
+
+	ImageCreatePost  HookTriggerEnum = "Image.Create.Post"
+	ImageUpdatePost  HookTriggerEnum = "Image.Update.Post"
+	ImageDestroyPost HookTriggerEnum = "Image.Destroy.Post"
+
+	GalleryCreatePost  HookTriggerEnum = "Gallery.Create.Post"
+	GalleryUpdatePost  HookTriggerEnum = "Gallery.Update.Post"
+	GalleryDestroyPost HookTriggerEnum = "Gallery.Destroy.Post"
+
+	MovieCreatePost  HookTriggerEnum = "Movie.Create.Post"
+	MovieUpdatePost  HookTriggerEnum = "Movie.Update.Post"
+	MovieDestroyPost HookTriggerEnum = "Movie.Destroy.Post"
+
+	PerformerCreatePost  HookTriggerEnum = "Performer.Create.Post"
+	PerformerUpdatePost  HookTriggerEnum = "Performer.Update.Post"
+	PerformerDestroyPost HookTriggerEnum = "Performer.Destroy.Post"
+
+	StudioCreatePost  HookTriggerEnum = "Studio.Create.Post"
+	StudioUpdatePost  HookTriggerEnum = "Studio.Update.Post"
+	StudioDestroyPost HookTriggerEnum = "Studio.Destroy.Post"
+
+	TagCreatePost  HookTriggerEnum = "Tag.Create.Post"
+	TagUpdatePost  HookTriggerEnum = "Tag.Update.Post"
+	TagDestroyPost HookTriggerEnum = "Tag.Destroy.Post"
+)
+
+var AllHookTriggerEnum = []HookTriggerEnum{
+	SceneMarkerCreatePost,
+	SceneMarkerUpdatePost,
+	SceneMarkerDestroyPost,
+
+	SceneCreatePost,
+	SceneUpdatePost,
+	SceneDestroyPost,
+
+	ImageCreatePost,
+	ImageUpdatePost,
+	ImageDestroyPost,
+
+	GalleryCreatePost,
+	GalleryUpdatePost,
+	GalleryDestroyPost,
+
+	MovieCreatePost,
+	MovieUpdatePost,
+	MovieDestroyPost,
+
+	PerformerCreatePost,
+	PerformerUpdatePost,
+	PerformerDestroyPost,
+
+	StudioCreatePost,
+	StudioUpdatePost,
+	StudioDestroyPost,
+
+	TagCreatePost,
+	TagUpdatePost,
+	TagDestroyPost,
+}
+
+func (e HookTriggerEnum) IsValid() bool {
+
+	switch e {
+	case SceneMarkerCreatePost,
+		SceneMarkerUpdatePost,
+		SceneMarkerDestroyPost,
+
+		SceneCreatePost,
+		SceneUpdatePost,
+		SceneDestroyPost,
+
+		ImageCreatePost,
+		ImageUpdatePost,
+		ImageDestroyPost,
+
+		GalleryCreatePost,
+		GalleryUpdatePost,
+		GalleryDestroyPost,
+
+		MovieCreatePost,
+		MovieUpdatePost,
+		MovieDestroyPost,
+
+		PerformerCreatePost,
+		PerformerUpdatePost,
+		PerformerDestroyPost,
+
+		StudioCreatePost,
+		StudioUpdatePost,
+		StudioDestroyPost,
+
+		TagCreatePost,
+		TagUpdatePost,
+		TagDestroyPost:
+		return true
+	}
+	return false
+}
+
+func (e HookTriggerEnum) String() string {
+	return string(e)
+}
+
+func addHookContext(argsMap common.ArgsMap, hookContext common.HookContext) {
+	argsMap[common.HookContextKey] = hookContext
+}

pkg/plugin/js.go

@@ -28,11 +28,6 @@ type jsPluginTask struct {
 	vm        *otto.Otto
 }
 
-func throw(vm *otto.Otto, str string) {
-	value, _ := vm.Call("new Error", nil, str)
-	panic(value)
-}
-
 func (t *jsPluginTask) onError(err error) {
 	errString := err.Error()
 	t.result = &common.PluginOutput{
@@ -76,12 +71,10 @@ func (t *jsPluginTask) Start() error {
 		return err
 	}
 
-	input := t.buildPluginInput()
-
-	t.vm.Set("input", input)
+	t.vm.Set("input", t.input)
 	js.AddLogAPI(t.vm, t.progress)
 	js.AddUtilAPI(t.vm)
-	js.AddGQLAPI(t.vm, t.gqlHandler)
+	js.AddGQLAPI(t.vm, t.input.ServerConnection.SessionCookie, t.gqlHandler)
 
 	t.vm.Interrupt = make(chan func(), 1)
 

pkg/plugin/js/gql.go

@@ -33,7 +33,7 @@ func throw(vm *otto.Otto, str string) {
 	panic(value)
 }
 
-func gqlRequestFunc(vm *otto.Otto, gqlHandler http.HandlerFunc) func(call otto.FunctionCall) otto.Value {
+func gqlRequestFunc(vm *otto.Otto, cookie *http.Cookie, gqlHandler http.Handler) func(call otto.FunctionCall) otto.Value {
 	return func(call otto.FunctionCall) otto.Value {
 		if len(call.ArgumentList) == 0 {
 			throw(vm, "missing argument")
@@ -67,11 +67,15 @@ func gqlRequestFunc(vm *otto.Otto, gqlHandler http.HandlerFunc) func(call otto.F
 		}
 		r.Header.Set("Content-Type", "application/json")
 
+		if cookie != nil {
+			r.AddCookie(cookie)
+		}
+
 		w := &responseWriter{
 			header: make(http.Header),
 		}
 
-		gqlHandler(w, r)
+		gqlHandler.ServeHTTP(w, r)
 
 		if w.statusCode != http.StatusOK && w.statusCode != 0 {
 			throw(vm, fmt.Sprintf("graphQL query failed: %d - %s. Query: %s. Variables: %v", w.statusCode, w.r.String(), in.Query, in.Variables))
@@ -99,9 +103,9 @@ func gqlRequestFunc(vm *otto.Otto, gqlHandler http.HandlerFunc) func(call otto.F
 	}
 }
 
-func AddGQLAPI(vm *otto.Otto, gqlHandler http.HandlerFunc) {
+func AddGQLAPI(vm *otto.Otto, cookie *http.Cookie, gqlHandler http.Handler) {
 	gql, _ := vm.Object("({})")
-	gql.Set("Do", gqlRequestFunc(vm, gqlHandler))
+	gql.Set("Do", gqlRequestFunc(vm, cookie, gqlHandler))
 
 	vm.Set("gql", gql)
 }

pkg/plugin/js/log.go

@@ -8,6 +8,8 @@ import (
 	"github.com/stashapp/stash/pkg/logger"
 )
 
+const pluginPrefix = "[Plugin] "
+
 func argToString(call otto.FunctionCall) string {
 	arg := call.Argument(0)
 	if arg.IsObject() {
@@ -20,27 +22,27 @@ func argToString(call otto.FunctionCall) string {
 }
 
 func logTrace(call otto.FunctionCall) otto.Value {
-	logger.Trace(argToString(call))
+	logger.Trace(pluginPrefix + argToString(call))
 	return otto.UndefinedValue()
 }
 
 func logDebug(call otto.FunctionCall) otto.Value {
-	logger.Debug(argToString(call))
+	logger.Debug(pluginPrefix + argToString(call))
 	return otto.UndefinedValue()
 }
 
 func logInfo(call otto.FunctionCall) otto.Value {
-	logger.Info(argToString(call))
+	logger.Info(pluginPrefix + argToString(call))
 	return otto.UndefinedValue()
 }
 
 func logWarn(call otto.FunctionCall) otto.Value {
-	logger.Warn(argToString(call))
+	logger.Warn(pluginPrefix + argToString(call))
 	return otto.UndefinedValue()
 }
 
 func logError(call otto.FunctionCall) otto.Value {
-	logger.Error(argToString(call))
+	logger.Error(pluginPrefix + argToString(call))
 	return otto.UndefinedValue()
 }
 

pkg/plugin/plugins.go

@@ -8,6 +8,7 @@
 package plugin
 
 import (
+	"context"
 	"fmt"
 	"net/http"
 	"os"
@@ -17,13 +18,16 @@ import (
 	"github.com/stashapp/stash/pkg/manager/config"
 	"github.com/stashapp/stash/pkg/models"
 	"github.com/stashapp/stash/pkg/plugin/common"
+	"github.com/stashapp/stash/pkg/session"
+	"github.com/stashapp/stash/pkg/utils"
 )
 
 // Cache stores plugin details.
 type Cache struct {
-	config     *config.Instance
-	plugins    []Config
-	gqlHandler http.HandlerFunc
+	config       *config.Instance
+	plugins      []Config
+	sessionStore *session.Store
+	gqlHandler   http.Handler
 }
 
 // NewCache returns a new Cache.
@@ -39,10 +43,14 @@ func NewCache(config *config.Instance) *Cache {
 	}
 }
 
-func (c *Cache) RegisterGQLHandler(handler http.HandlerFunc) {
+func (c *Cache) RegisterGQLHandler(handler http.Handler) {
 	c.gqlHandler = handler
 }
 
+func (c *Cache) RegisterSessionStore(sessionStore *session.Store) {
+	c.sessionStore = sessionStore
+}
+
 // LoadPlugins clears the plugin cache and loads from the plugin path.
 // In the event of an error during loading, the cache will be left empty.
 func (c *Cache) LoadPlugins() error {
@@ -105,10 +113,38 @@ func (c Cache) ListPluginTasks() []*models.PluginTask {
 	return ret
 }
 
+func buildPluginInput(plugin *Config, operation *OperationConfig, serverConnection common.StashServerConnection, args []*models.PluginArgInput) common.PluginInput {
+	args = applyDefaultArgs(args, operation.DefaultArgs)
+	serverConnection.PluginDir = plugin.getConfigPath()
+	return common.PluginInput{
+		ServerConnection: serverConnection,
+		Args:             toPluginArgs(args),
+	}
+}
+
+func (c Cache) makeServerConnection(ctx context.Context) common.StashServerConnection {
+	cookie := c.sessionStore.MakePluginCookie(ctx)
+
+	serverConnection := common.StashServerConnection{
+		Scheme:        "http",
+		Port:          c.config.GetPort(),
+		SessionCookie: cookie,
+		Dir:           c.config.GetConfigPath(),
+	}
+
+	if config.HasTLSConfig() {
+		serverConnection.Scheme = "https"
+	}
+
+	return serverConnection
+}
+
 // CreateTask runs the plugin operation for the pluginID and operation
 // name provided. Returns an error if the plugin or the operation could not be
 // resolved.
-func (c Cache) CreateTask(pluginID string, operationName string, serverConnection common.StashServerConnection, args []*models.PluginArgInput, progress chan float64) (Task, error) {
+func (c Cache) CreateTask(ctx context.Context, pluginID string, operationName string, args []*models.PluginArgInput, progress chan float64) (Task, error) {
+	serverConnection := c.makeServerConnection(ctx)
+
 	// find the plugin and operation
 	plugin := c.getPlugin(pluginID)
 
@@ -122,16 +158,88 @@ func (c Cache) CreateTask(pluginID string, operationName string, serverConnectio
 	}
 
 	task := pluginTask{
-		plugin:           plugin,
-		operation:        operation,
-		serverConnection: serverConnection,
-		args:             args,
-		progress:         progress,
-		gqlHandler:       c.gqlHandler,
+		plugin:     plugin,
+		operation:  operation,
+		input:      buildPluginInput(plugin, operation, serverConnection, args),
+		progress:   progress,
+		gqlHandler: c.gqlHandler,
 	}
 	return task.createTask(), nil
 }
 
+func (c Cache) ExecutePostHooks(ctx context.Context, id int, hookType HookTriggerEnum, input interface{}, inputFields []string) {
+	if err := c.executePostHooks(ctx, hookType, common.HookContext{
+		ID:          id,
+		Type:        hookType.String(),
+		Input:       input,
+		InputFields: inputFields,
+	}); err != nil {
+		logger.Errorf("error executing post hooks: %s", err.Error())
+	}
+}
+
+func (c Cache) executePostHooks(ctx context.Context, hookType HookTriggerEnum, hookContext common.HookContext) error {
+	visitedPlugins := session.GetVisitedPlugins(ctx)
+
+	for _, p := range c.plugins {
+		hooks := p.getHooks(hookType)
+		// don't revisit a plugin we've already visited
+		// only log if there's hooks that we're skipping
+		if len(hooks) > 0 && utils.StrInclude(visitedPlugins, p.id) {
+			logger.Debugf("plugin ID '%s' already triggered, not re-triggering", p.id)
+			continue
+		}
+
+		for _, h := range hooks {
+			newCtx := session.AddVisitedPlugin(ctx, p.id)
+			serverConnection := c.makeServerConnection(newCtx)
+
+			pluginInput := buildPluginInput(&p, &h.OperationConfig, serverConnection, nil)
+			addHookContext(pluginInput.Args, hookContext)
+
+			pt := pluginTask{
+				plugin:     &p,
+				operation:  &h.OperationConfig,
+				input:      pluginInput,
+				gqlHandler: c.gqlHandler,
+			}
+
+			task := pt.createTask()
+			if err := task.Start(); err != nil {
+				return err
+			}
+
+			// handle cancel from context
+			c := make(chan struct{})
+			go func() {
+				task.Wait()
+				close(c)
+			}()
+
+			select {
+			case <-ctx.Done():
+				task.Stop()
+				return fmt.Errorf("operation cancelled")
+			case <-c:
+				// task finished normally
+			}
+
+			output := task.GetResult()
+			if output == nil {
+				logger.Debugf("%s [%s]: returned no result", hookType.String(), p.Name)
+			} else {
+				if output.Error != nil {
+					logger.Errorf("%s [%s]: returned error: %s", hookType.String(), p.Name, *output.Error)
+				} else if output.Output != nil {
+					logger.Debugf("%s [%s]: returned: %v", hookType.String(), p.Name, output.Output)
+				}
+			}
+		}
+	}
+
+	return nil
+}
+
 func (c Cache) getPlugin(pluginID string) *Config {
 	for _, s := range c.plugins {
 		if s.id == pluginID {

pkg/plugin/raw.go

@@ -50,8 +50,7 @@ func (t *rawPluginTask) Start() error {
 	go func() {
 		defer stdin.Close()
 
-		input := t.buildPluginInput()
-		inBytes, _ := json.Marshal(input)
+		inBytes, _ := json.Marshal(t.input)
 		io.WriteString(stdin, string(inBytes))
 	}()
 

pkg/plugin/rpc.go

@@ -70,12 +70,10 @@ func (t *rpcPluginTask) Start() error {
 		Client: t.client,
 	}
 
-	input := t.buildPluginInput()
-
 	t.done = make(chan *rpc.Call, 1)
 	result := common.PluginOutput{}
 	t.waitGroup.Add(1)
-	iface.RunAsync(input, &result, t.done)
+	iface.RunAsync(t.input, &result, t.done)
 	go t.waitToFinish(&result)
 
 	t.started = true

pkg/plugin/task.go

@@ -3,7 +3,6 @@ package plugin
 import (
 	"net/http"
 
-	"github.com/stashapp/stash/pkg/models"
 	"github.com/stashapp/stash/pkg/plugin/common"
 )
 
@@ -31,11 +30,10 @@ type taskBuilder interface {
 }
 
 type pluginTask struct {
-	plugin           *Config
-	operation        *OperationConfig
-	serverConnection common.StashServerConnection
-	args             []*models.PluginArgInput
-	gqlHandler       http.HandlerFunc
+	plugin     *Config
+	operation  *OperationConfig
+	input      common.PluginInput
+	gqlHandler http.Handler
 
 	progress chan float64
 	result   *common.PluginOutput
@@ -48,12 +46,3 @@ func (t *pluginTask) GetResult() *common.PluginOutput {
 func (t *pluginTask) createTask() Task {
 	return t.plugin.Interface.getTaskBuilder().build(*t)
 }
-
-func (t *pluginTask) buildPluginInput() common.PluginInput {
-	args := applyDefaultArgs(t.args, t.operation.DefaultArgs)
-	t.serverConnection.PluginDir = t.plugin.getConfigPath()
-	return common.PluginInput{
-		ServerConnection: t.serverConnection,
-		Args:             toPluginArgs(args),
-	}
-}

pkg/session/session.go

@@ -0,0 +1,240 @@
+package session
+
+import (
+	"context"
+	"errors"
+	"net/http"
+
+	"github.com/gorilla/securecookie"
+	"github.com/gorilla/sessions"
+	"github.com/stashapp/stash/pkg/logger"
+	"github.com/stashapp/stash/pkg/manager/config"
+	"github.com/stashapp/stash/pkg/utils"
+)
+
+type key int
+
+const (
+	contextUser key = iota
+	contextVisitedPlugins
+)
+
+const (
+	userIDKey         = "userID"
+	visitedPluginsKey = "visitedPlugins"
+)
+
+const (
+	ApiKeyHeader    = "ApiKey"
+	ApiKeyParameter = "apikey"
+)
+
+const (
+	cookieName      = "session"
+	usernameFormKey = "username"
+	passwordFormKey = "password"
+)
+
+var ErrInvalidCredentials = errors.New("invalid username or password")
+var ErrUnauthorized = errors.New("unauthorized")
+
+type Store struct {
+	sessionStore *sessions.CookieStore
+	config       *config.Instance
+}
+
+func NewStore(c *config.Instance) *Store {
+	ret := &Store{
+		sessionStore: sessions.NewCookieStore(config.GetInstance().GetSessionStoreKey()),
+		config:       c,
+	}
+
+	ret.sessionStore.MaxAge(config.GetInstance().GetMaxSessionAge())
+
+	return ret
+}
+
+func (s *Store) Login(w http.ResponseWriter, r *http.Request) error {
+	// ignore error - we want a new session regardless
+	newSession, _ := s.sessionStore.Get(r, cookieName)
+
+	username := r.FormValue(usernameFormKey)
+	password := r.FormValue(passwordFormKey)
+
+	// authenticate the user
+	if !config.GetInstance().ValidateCredentials(username, password) {
+		return ErrInvalidCredentials
+	}
+
+	newSession.Values[userIDKey] = username
+
+	err := newSession.Save(r, w)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (s *Store) Logout(w http.ResponseWriter, r *http.Request) error {
+	session, err := s.sessionStore.Get(r, cookieName)
+	if err != nil {
+		return err
+	}
+
+	delete(session.Values, userIDKey)
+	session.Options.MaxAge = -1
+
+	err = session.Save(r, w)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (s *Store) GetSessionUserID(w http.ResponseWriter, r *http.Request) (string, error) {
+	session, err := s.sessionStore.Get(r, cookieName)
+	// ignore errors and treat as an empty user id, so that we handle expired
+	// cookie
+	if err != nil {
+		return "", nil
+	}
+
+	if !session.IsNew {
+		val := session.Values[userIDKey]
+
+		// refresh the cookie
+		err = session.Save(r, w)
+		if err != nil {
+			return "", err
+		}
+
+		ret, _ := val.(string)
+
+		return ret, nil
+	}
+
+	return "", nil
+}
+
+func SetCurrentUserID(ctx context.Context, userID string) context.Context {
+	return context.WithValue(ctx, contextUser, userID)
+}
+
+// GetCurrentUserID gets the current user id from the provided context
+func GetCurrentUserID(ctx context.Context) *string {
+	userCtxVal := ctx.Value(contextUser)
+	if userCtxVal != nil {
+		currentUser := userCtxVal.(string)
+		return &currentUser
+	}
+
+	return nil
+}
+
+func (s *Store) VisitedPluginHandler() func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			// get the visited plugins from the cookie and set in the context
+			session, err := s.sessionStore.Get(r, cookieName)
+
+			// ignore errors
+			if err == nil {
+				val := session.Values[visitedPluginsKey]
+
+				visitedPlugins, _ := val.([]string)
+
+				ctx := setVisitedPlugins(r.Context(), visitedPlugins)
+				r = r.WithContext(ctx)
+			}
+
+			next.ServeHTTP(w, r)
+		})
+	}
+}
+
+func GetVisitedPlugins(ctx context.Context) []string {
+	ctxVal := ctx.Value(contextVisitedPlugins)
+	if ctxVal != nil {
+		return ctxVal.([]string)
+	}
+
+	return nil
+}
+
+func AddVisitedPlugin(ctx context.Context, pluginID string) context.Context {
+	curVal := GetVisitedPlugins(ctx)
+	curVal = utils.StrAppendUnique(curVal, pluginID)
+	return setVisitedPlugins(ctx, curVal)
+}
+
+func setVisitedPlugins(ctx context.Context, visitedPlugins []string) context.Context {
+	return context.WithValue(ctx, contextVisitedPlugins, visitedPlugins)
+}
+
+func (s *Store) createSessionCookie(username string) (*http.Cookie, error) {
+	session := sessions.NewSession(s.sessionStore, cookieName)
+	session.Values[userIDKey] = username
+
+	encoded, err := securecookie.EncodeMulti(session.Name(), session.Values,
+		s.sessionStore.Codecs...)
+	if err != nil {
+		return nil, err
+	}
+
+	return sessions.NewCookie(session.Name(), encoded, session.Options), nil
+}
+
+func (s *Store) MakePluginCookie(ctx context.Context) *http.Cookie {
+	currentUser := GetCurrentUserID(ctx)
+	visitedPlugins := GetVisitedPlugins(ctx)
+
+	session := sessions.NewSession(s.sessionStore, cookieName)
+	if currentUser != nil {
+		session.Values[userIDKey] = *currentUser
+	}
+
+	session.Values[visitedPluginsKey] = visitedPlugins
+
+	encoded, err := securecookie.EncodeMulti(session.Name(), session.Values,
+		s.sessionStore.Codecs...)
+	if err != nil {
+		logger.Errorf("error creating session cookie: %s", err.Error())
+		return nil
+	}
+
+	return sessions.NewCookie(session.Name(), encoded, session.Options)
+}
+
+func (s *Store) Authenticate(w http.ResponseWriter, r *http.Request) (userID string, err error) {
+	c := s.config
+
+	// translate api key into current user, if present
+	apiKey := r.Header.Get(ApiKeyHeader)
+
+	// try getting the api key as a query parameter
+	if apiKey == "" {
+		apiKey = r.URL.Query().Get(ApiKeyParameter)
+	}
+
+	if apiKey != "" {
+		// match against configured API and set userID to the
+		// configured username. In future, we'll want to
+		// get the username from the key.
+		if c.GetAPIKey() != apiKey {
+			return "", ErrUnauthorized
+		}
+
+		userID = c.GetUsername()
+	} else {
+		// handle session
+		userID, err = s.GetSessionUserID(w, r)
+	}
+
+	if err != nil {
+		return "", err
+	}
+
+	return
+}

pkg/utils/context.go

@@ -0,0 +1,28 @@
+package utils
+
+import (
+	"context"
+	"time"
+)
+
+type valueOnlyContext struct {
+	context.Context
+}
+
+func (valueOnlyContext) Deadline() (deadline time.Time, ok bool) {
+	return
+}
+
+func (valueOnlyContext) Done() <-chan struct{} {
+	return nil
+}
+
+func (valueOnlyContext) Err() error {
+	return nil
+}
+
+func ValueOnlyContext(ctx context.Context) context.Context {
+	return valueOnlyContext{
+		ctx,
+	}
+}

pkg/utils/oshash_internal_test.go

@@ -23,7 +23,7 @@ func TestOshashEmpty(t *testing.T) {
 func TestOshashCollisions(t *testing.T) {
 	buf1 := []byte("this is dumb")
 	buf2 := []byte("dumb is this")
-	var size = int64(len(buf1))
+	size := int64(len(buf1))
 	head := make([]byte, chunkSize)
 
 	tail1 := make([]byte, chunkSize)

ui/v2.5/src/components/Changelog/versions/v080.md

@@ -1,4 +1,5 @@
 ### ✨ New Features
+* Added support for triggering plugin tasks during operations. ([#1452](https://github.com/stashapp/stash/pull/1452))
 * Support Studio filter including child studios. ([#1397](https://github.com/stashapp/stash/pull/1397))
 * Added support for tag aliases. ([#1412](https://github.com/stashapp/stash/pull/1412))
 * Support embedded Javascript plugins. ([#1393](https://github.com/stashapp/stash/pull/1393))

ui/v2.5/src/components/Settings/SettingsPluginsPanel.tsx

@@ -1,9 +1,10 @@
 import React from "react";
 import { Button } from "react-bootstrap";
+import * as GQL from "src/core/generated-graphql";
 import { mutateReloadPlugins, usePlugins } from "src/core/StashService";
 import { useToast } from "src/hooks";
 import { TextUtils } from "src/utils";
-import { Icon, LoadingIndicator } from "src/components/Shared";
+import { CollapseButton, Icon, LoadingIndicator } from "src/components/Shared";
 
 export const SettingsPluginsPanel: React.FC = () => {
   const Toast = useToast();
@@ -33,13 +34,14 @@ export const SettingsPluginsPanel: React.FC = () => {
   function renderPlugins() {
     const elements = (data?.plugins ?? []).map((plugin) => (
       <div key={plugin.id}>
-        <h5>
+        <h4>
           {plugin.name} {plugin.version ? `(${plugin.version})` : undefined}{" "}
           {renderLink(plugin.url ?? undefined)}
-        </h5>
+        </h4>
         {plugin.description ? (
           <small className="text-muted">{plugin.description}</small>
         ) : undefined}
+        {renderPluginHooks(plugin.hooks ?? undefined)}
         <hr />
       </div>
     ));
@@ -47,11 +49,40 @@ export const SettingsPluginsPanel: React.FC = () => {
     return <div>{elements}</div>;
   }
 
+  function renderPluginHooks(
+    hooks?: Pick<GQL.PluginHook, "name" | "description" | "hooks">[]
+  ) {
+    if (!hooks || hooks.length === 0) {
+      return;
+    }
+
+    return (
+      <div className="mt-2">
+        <h5>Hooks</h5>
+        {hooks.map((h) => (
+          <div key={`${h.name}`} className="mb-3">
+            <h6>{h.name}</h6>
+            <CollapseButton text="Triggers on">
+              <ul>
+                {h.hooks?.map((hh) => (
+                  <li>
+                    <code>{hh}</code>
+                  </li>
+                ))}
+              </ul>
+            </CollapseButton>
+            <small className="text-muted">{h.description}</small>
+          </div>
+        ))}
+      </div>
+    );
+  }
+
   if (loading) return <LoadingIndicator />;
 
   return (
     <>
-      <h4>Plugins</h4>
+      <h3>Plugins</h3>
       <hr />
       {renderPlugins()}
       <Button onClick={() => onReloadPlugins()}>

ui/v2.5/src/docs/en/EmbeddedPlugins.md

@@ -78,22 +78,6 @@ For embedded plugins, the `exec` field is a list with the first element being th
 For embedded plugins, the `interface` field must be set to one of the following values:
 * `js`
 
-# Task configuration
-
-Tasks are configured using the following structure:
-
-```
-tasks:
-  - name: <operation name>
-    description: <optional description>
-    defaultArgs:
-      argKey: argValue
-```
-
-A plugin configuration may contain multiple tasks. 
-
-The `defaultArgs` field is used to add inputs to the plugin input sent to the plugin.
-
 # Javascript API
 
 ## Logging

ui/v2.5/src/docs/en/ExternalPlugins.md

@@ -89,20 +89,14 @@ The `errLog` field tells stash what the default log level should be when the plu
 
 # Task configuration
 
-Tasks are configured using the following structure:
+In addition to the standard task configuration, external tags may be configured with an optional `execArgs` field to add extra parameters to the execution arguments for the task.
+
+For example:
 
 ```
 tasks:
   - name: <operation name>
     description: <optional description>
-    defaultArgs:
-      argKey: argValue
     execArgs:
       - <arg to add to the exec line>
 ```
-
-A plugin configuration may contain multiple tasks. 
-
-The `defaultArgs` field is used to add inputs to the plugin input sent to the plugin.
-
-The `execArgs` field allows adding extra parameters to the execution arguments for this task.

ui/v2.5/src/docs/en/Plugins.md

@@ -2,6 +2,8 @@
 
 Stash supports the running tasks via plugins. Plugins can be implemented using embedded Javascript, or by calling an external binary.
 
+Stash also supports triggering of plugin hooks from specific stash operations.
+
 > **⚠️ Note:** Plugin support is still experimental and is likely to change.
 
 # Adding plugins
@@ -67,3 +69,108 @@ Plugin output is expected in the following structure (presented here as JSON for
 ```
 
 The `error` field is logged in stash at the `error` log level if present. The `output` is written at the `debug` log level.
+
+## Task configuration
+
+Tasks are configured using the following structure:
+
+```
+tasks:
+  - name: <operation name>
+    description: <optional description>
+    defaultArgs:
+      argKey: argValue
+```
+
+A plugin configuration may contain multiple tasks. 
+
+The `defaultArgs` field is used to add inputs to the plugin input sent to the plugin.
+
+## Hook configuration
+
+Stash supports executing plugin operations via triggering of a hook during a stash operation.
+
+Hooks are configured using a similar structure to tasks:
+
+```
+hooks:
+  - name: <operation name>
+    description: <optional description>
+    triggeredBy:
+      - <trigger types>...
+    defaultArgs:
+      argKey: argValue
+```
+
+**Note:** it is possible for hooks to trigger eachother or themselves if they perform mutations. For safety, hooks will not be triggered if they have already been triggered in the context of the operation. Stash uses cookies to track this context, so it's important for plugins to send cookies when performing operations.
+
+### Trigger types
+
+Trigger types use the following format:
+`<object type>.<operation>.<hook type>`
+
+For example, a post-hook on a scene create operation will be `Scene.Create.Post`.
+
+The following object types are supported:
+* `Scene`
+* `SceneMarker`
+* `Image`
+* `Gallery`
+* `Movie`
+* `Performer`
+* `Studio`
+* `Tag`
+
+The following operations are supported:
+* `Create`
+* `Update`
+* `Destroy`
+
+Currently, only `Post` hook types are supported. These are executed after the operation has completed and the transaction is committed.
+
+### Hook input
+
+Plugin tasks triggered by a hook include an argument named `hookContext` in the `args` object structure. The `hookContext` is structured as follows:
+
+```
+{
+    "id": <object id>,
+    "type": <trigger type>,
+    "input": <operation input>,
+    "inputFields": <fields included in input>
+}
+```
+
+The `input` field contains the JSON graphql input passed to the original operation. This will differ between operations. For hooks triggered by operations in a scan or clean, the input will be nil. `inputFields` is populated in update operations to indicate which fields were passed to the operation, to differentiate between missing and empty fields.
+
+For example, here is the `args` values for a Scene update operation:
+
+```
+{
+    "hookContext": {
+        "type":"Scene.Update.Post",
+        "id":45,
+        "input":{
+            "clientMutationId":null,
+            "id":"45",
+            "title":null,
+            "details":null,
+            "url":null,
+            "date":null,
+            "rating":null,
+            "organized":null,
+            "studio_id":null,
+            "gallery_ids":null,
+            "performer_ids":null,
+            "movies":null,
+            "tag_ids":["21"],
+            "cover_image":null,
+            "stash_ids":null
+        },
+        "inputFields":[
+            "tag_ids",
+            "id"
+        ]
+    }
+}
+```