Delete releases attachments if release is deleted

models/migrations/migrations.go

@@ -242,6 +242,8 @@ var migrations = []Migration{
 	NewMigration("remove orphaned repository index statuses", removeLingeringIndexStatus),
 	// v93 -> v94
 	NewMigration("add email notification enabled preference to user", addEmailNotificationEnabledToUser),
+	// v94 -> v95
+	NewMigration("delete orphaned attachments", deleteOrphanedAttachments),
 }
 
 // Migrate database to current version

models/migrations/v80.go

@@ -14,5 +14,4 @@ func addIsLockedToIssues(x *xorm.Engine) error {
 	}
 
 	return x.Sync2(new(Issue))
-
 }

models/migrations/v94.go

@@ -0,0 +1,47 @@
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package migrations
+
+import (
+	"os"
+
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/setting"
+	"github.com/go-xorm/xorm"
+)
+
+func deleteOrphanedAttachments(x *xorm.Engine) error {
+
+	type Attachment struct {
+		ID        int64  `xorm:"pk autoincr"`
+		UUID      string `xorm:"uuid UNIQUE"`
+		IssueID   int64  `xorm:"INDEX"`
+		ReleaseID int64  `xorm:"INDEX"`
+		CommentID int64
+	}
+
+	sess := x.NewSession()
+	defer sess.Close()
+
+	err := sess.BufferSize(setting.IterateBufferSize).
+		Where("`comment_id` = 0 and (`release_id` = 0 or `release_id` not in (select `id` from `releases`))").Cols("uuid").
+		Iterate(new(Attachment),
+			func(idx int, bean interface{}) error {
+				attachment := bean.(*Attachment)
+
+				if err := os.RemoveAll(models.AttachmentLocalPath(attachment.UUID)); err != nil {
+					return err
+				}
+
+				_, err := sess.Delete(attachment)
+				return err
+			})
+
+	if err != nil {
+		return err
+	}
+
+	return sess.Commit()
+}

models/release.go

@@ -6,6 +6,7 @@ package models
 
 import (
 	"fmt"
+	"os"
 	"sort"
 	"strings"
 
@@ -369,6 +370,21 @@ func DeleteReleaseByID(id int64, doer *User, delTag bool) error {
 		go HookQueue.Add(rel.Repo.ID)
 	}
 
+	uuids := make([]string, 0, len(rel.Attachments))
+
+	for i := range rel.Attachments {
+		attachment := rel.Attachments[i]
+		if err := os.RemoveAll(attachment.LocalPath()); err != nil {
+			return err
+		}
+
+		uuids = append(uuids, attachment.UUID)
+	}
+
+	if _, err := x.In("uuid", uuids).Delete(new(Attachment)); err != nil {
+		return err
+	}
+
 	return nil
 }