Merge branch 'rd-35856-backport-lfs-file-locking-api' into 'master'

Backport LFS File Locking API

Closes #35856

See merge request gitlab-org/gitlab-ce!16935

3 files changed, 99 insertions, 0 deletions

diff --git a/app/services/lfs/lock_file_service.rb b/app/services/lfs/lock_file_service.rb
new file mode 100644
index 00000000000..bbe10f84ef4
--- /dev/null
+++ b/app/services/lfs/lock_file_service.rb
@@ -0,0 +1,39 @@
+module Lfs
+  class LockFileService < BaseService
+    def execute
+      unless can?(current_user, :push_code, project)
+        raise Gitlab::GitAccess::UnauthorizedError, 'You have no permissions'
+      end
+
+      create_lock!
+    rescue ActiveRecord::RecordNotUnique
+      error('already locked', 409, current_lock)
+    rescue Gitlab::GitAccess::UnauthorizedError => ex
+      error(ex.message, 403)
+    rescue => ex
+      error(ex.message, 500)
+    end
+
+    private
+
+    def current_lock
+      project.lfs_file_locks.find_by(path: params[:path])
+    end
+
+    def create_lock!
+      lock = project.lfs_file_locks.create!(user: current_user,
+                                            path: params[:path])
+
+      success(http_status: 201, lock: lock)
+    end
+
+    def error(message, http_status, lock = nil)
+      {
+        status: :error,
+        message: message,
+        http_status: http_status,
+        lock: lock
+      }
+    end
+  end
+end
diff --git a/app/services/lfs/locks_finder_service.rb b/app/services/lfs/locks_finder_service.rb
new file mode 100644
index 00000000000..13c6cc6f81c
--- /dev/null
+++ b/app/services/lfs/locks_finder_service.rb
@@ -0,0 +1,17 @@
+module Lfs
+  class LocksFinderService < BaseService
+    def execute
+      success(locks: find_locks)
+    rescue => ex
+      error(ex.message, 500)
+    end
+
+    private
+
+    def find_locks
+      options = params.slice(:id, :path).compact.symbolize_keys
+
+      project.lfs_file_locks.where(options)
+    end
+  end
+end
diff --git a/app/services/lfs/unlock_file_service.rb b/app/services/lfs/unlock_file_service.rb
new file mode 100644
index 00000000000..6c93dc69bb0
--- /dev/null
+++ b/app/services/lfs/unlock_file_service.rb
@@ -0,0 +1,43 @@
+module Lfs
+  class UnlockFileService < BaseService
+    def execute
+      unless can?(current_user, :push_code, project)
+        raise Gitlab::GitAccess::UnauthorizedError, 'You have no permissions'
+      end
+
+      unlock_file
+    rescue Gitlab::GitAccess::UnauthorizedError => ex
+      error(ex.message, 403)
+    rescue ActiveRecord::RecordNotFound
+      error('Lock not found', 404)
+    rescue => ex
+      error(ex.message, 500)
+    end
+
+    private
+
+    def unlock_file
+      forced = params[:force] == true
+
+      if lock.can_be_unlocked_by?(current_user, forced)
+        lock.destroy!
+
+        success(lock: lock, http_status: :ok)
+      elsif forced
+        error('You must have master access to force delete a lock', 403)
+      else
+        error("#{lock.path} is locked by GitLab User #{lock.user_id}", 403)
+      end
+    end
+
+    def lock
+      return @lock if defined?(@lock)
+
+      @lock = if params[:id].present?
+                project.lfs_file_locks.find(params[:id])
+              elsif params[:path].present?
+                project.lfs_file_locks.find_by!(path: params[:path])
+              end
+    end
+  end
+end