Merge branch 'tag-branch-hooks' into 'master'

Execute hooks and services when branch or tag is created or deleted through web interface.

Fixes #2095.

Split up into commits to make it easier to see why what was changed :)

See merge request !1692

10 files changed, 87 insertions, 45 deletions

diff --git a/CHANGELOG b/CHANGELOG
index aa47047b326..5ccedcbc8c5 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -64,6 +64,7 @@ v 7.9.0 (unreleased)
   - Block user if he/she was blocked in Active Directory
   - Fix import pages not working after first load.
   - Use custom LDAP label in LDAP signin form.
+  - Execute hooks and services when branch or tag is created or deleted through web interface.
 
 v 7.8.4
   - Fix issue_tracker_id substitution in custom issue trackers
diff --git a/app/controllers/projects/tags_controller.rb b/app/controllers/projects/tags_controller.rb
index c4f27a6d989..83f4937bce3 100644
--- a/app/controllers/projects/tags_controller.rb
+++ b/app/controllers/projects/tags_controller.rb
@@ -24,14 +24,13 @@ class Projects::TagsController < Projects::ApplicationController
   end
 
   def destroy
-    tag = @repository.find_tag(params[:id])
-
-    if tag && @repository.rm_tag(tag.name)
-      EventCreateService.new.push_ref(@project, current_user, tag, 'rm', Gitlab::Git::TAG_REF_PREFIX)
-    end
+    DeleteTagService.new(project, current_user).execute(params[:id])
 
     respond_to do |format|
-      format.html { redirect_to namespace_project_tags_path }
+      format.html do
+        redirect_to namespace_project_tags_path(@project.namespace,
+                                                @project)
+      end
       format.js
     end
   end
diff --git a/app/services/create_branch_service.rb b/app/services/create_branch_service.rb
index 5e971c7891c..cf7ae4345f3 100644
--- a/app/services/create_branch_service.rb
+++ b/app/services/create_branch_service.rb
@@ -17,10 +17,15 @@ class CreateBranchService < BaseService
     new_branch = repository.find_branch(branch_name)
 
     if new_branch
-      EventCreateService.new.push_ref(project, current_user, new_branch, 'add')
-      return success(new_branch)
+      push_data = build_push_data(project, current_user, new_branch)
+
+      EventCreateService.new.push(project, current_user, push_data)
+      project.execute_hooks(push_data.dup, :push_hooks)
+      project.execute_services(push_data.dup, :push_hooks)
+
+      success(new_branch)
     else
-      return error('Invalid reference name')
+      error('Invalid reference name')
     end
   end
 
@@ -29,4 +34,9 @@ class CreateBranchService < BaseService
     out[:branch] = branch
     out
   end
+
+  def build_push_data(project, user, branch)
+    Gitlab::PushDataBuilder.
+      build(project, user, Gitlab::Git::BLANK_SHA, branch.target, "#{Gitlab::Git::BRANCH_REF_PREFIX}#{branch.name}", [])
+  end
 end
diff --git a/app/services/create_tag_service.rb b/app/services/create_tag_service.rb
index dfc5677c9d4..af4b537cb93 100644
--- a/app/services/create_tag_service.rb
+++ b/app/services/create_tag_service.rb
@@ -21,9 +21,9 @@ class CreateTagService < BaseService
     new_tag = repository.find_tag(tag_name)
 
     if new_tag
-      EventCreateService.new.push_ref(project, current_user, new_tag, 'add', Gitlab::Git::TAG_REF_PREFIX)
-
       push_data = create_push_data(project, current_user, new_tag)
+
+      EventCreateService.new.push(project, current_user, push_data)
       project.execute_hooks(push_data.dup, :tag_push_hooks)
       project.execute_services(push_data.dup, :tag_push_hooks)
 
@@ -40,9 +40,7 @@ class CreateTagService < BaseService
   end
 
   def create_push_data(project, user, tag)
-    data = Gitlab::PushDataBuilder.
+    Gitlab::PushDataBuilder.
       build(project, user, Gitlab::Git::BLANK_SHA, tag.target, "#{Gitlab::Git::TAG_REF_PREFIX}#{tag.name}", [])
-    data[:object_kind] = "tag_push"
-    data
   end
 end
diff --git a/app/services/delete_branch_service.rb b/app/services/delete_branch_service.rb
index c26aee2b0aa..b19b112a0c4 100644
--- a/app/services/delete_branch_service.rb
+++ b/app/services/delete_branch_service.rb
@@ -25,10 +25,15 @@ class DeleteBranchService < BaseService
     end
 
     if repository.rm_branch(branch_name)
-      EventCreateService.new.push_ref(project, current_user, branch, 'rm')
+      push_data = build_push_data(branch)
+
+      EventCreateService.new.push(project, current_user, push_data)
+      project.execute_hooks(push_data.dup, :push_hooks)
+      project.execute_services(push_data.dup, :push_hooks)
+
       success('Branch was removed')
     else
-      return error('Failed to remove branch')
+      error('Failed to remove branch')
     end
   end
 
@@ -43,4 +48,9 @@ class DeleteBranchService < BaseService
     out[:message] = message
     out
   end
+
+  def build_push_data(branch)
+    Gitlab::PushDataBuilder
+      .build(project, current_user, branch.target, Gitlab::Git::BLANK_SHA, "#{Gitlab::Git::BRANCH_REF_PREFIX}#{branch.name}", [])
+  end
 end
diff --git a/app/services/delete_tag_service.rb b/app/services/delete_tag_service.rb
new file mode 100644
index 00000000000..0c836401136
--- /dev/null
+++ b/app/services/delete_tag_service.rb
@@ -0,0 +1,42 @@
+require_relative 'base_service'
+
+class DeleteTagService < BaseService
+  def execute(tag_name)
+    repository = project.repository
+    tag = repository.find_tag(tag_name)
+
+    # No such tag
+    unless tag
+      return error('No such tag', 404)
+    end
+
+    if repository.rm_tag(tag_name)
+      push_data = build_push_data(tag)
+      
+      EventCreateService.new.push(project, current_user, push_data)
+      project.execute_hooks(push_data.dup, :tag_push_hooks)
+      project.execute_services(push_data.dup, :tag_push_hooks)
+
+      success('Tag was removed')
+    else
+      error('Failed to remove tag')
+    end
+  end
+
+  def error(message, return_code = 400)
+    out = super(message)
+    out[:return_code] = return_code
+    out
+  end
+
+  def success(message)
+    out = super()
+    out[:message] = message
+    out
+  end
+
+  def build_push_data(tag)
+    Gitlab::PushDataBuilder
+      .build(project, current_user, tag.target, Gitlab::Git::BLANK_SHA, "#{Gitlab::Git::TAG_REF_PREFIX}#{tag.name}", [])
+  end
+end
diff --git a/app/services/event_create_service.rb b/app/services/event_create_service.rb
index dc52d6d89df..103d6b0a08b 100644
--- a/app/services/event_create_service.rb
+++ b/app/services/event_create_service.rb
@@ -62,26 +62,6 @@ class EventCreateService
     create_event(project, current_user, Event::CREATED)
   end
 
-  def push_ref(project, current_user, ref, action = 'add', prefix = Gitlab::Git::BRANCH_REF_PREFIX)
-    commit = project.repository.commit(ref.target)
-
-    if action.to_s == 'add'
-      before = Gitlab::Git::BLANK_SHA
-      after = commit.id
-    else
-      before = commit.id
-      after = Gitlab::Git::BLANK_SHA
-    end
-
-    data = {
-      ref: "#{prefix}#{ref.name}",
-      before: before,
-      after: after
-    }
-
-    push(project, current_user, data)
-  end
-
   def push(project, current_user, push_data)
     create_event(project, current_user, Event::PUSHED, data: push_data)
   end
diff --git a/app/services/git_push_service.rb b/app/services/git_push_service.rb
index bfabfd7ade3..4885e1b2fc5 100644
--- a/app/services/git_push_service.rb
+++ b/app/services/git_push_service.rb
@@ -53,7 +53,8 @@ class GitPushService
         process_commit_messages(ref)
       end
 
-      @push_data = post_receive_data(oldrev, newrev, ref)
+      @push_data = build_push_data(oldrev, newrev, ref)
+
       EventCreateService.new.push(project, user, @push_data)
       project.execute_hooks(@push_data.dup, :push_hooks)
       project.execute_services(@push_data.dup, :push_hooks)
@@ -101,7 +102,7 @@ class GitPushService
     end
   end
 
-  def post_receive_data(oldrev, newrev, ref)
+  def build_push_data(oldrev, newrev, ref)
     Gitlab::PushDataBuilder.
       build(project, user, oldrev, newrev, ref, push_commits)
   end
diff --git a/app/services/git_tag_push_service.rb b/app/services/git_tag_push_service.rb
index cd92f50b02a..0d8e6e85e47 100644
--- a/app/services/git_tag_push_service.rb
+++ b/app/services/git_tag_push_service.rb
@@ -3,21 +3,21 @@ class GitTagPushService
 
   def execute(project, user, oldrev, newrev, ref)
     @project, @user = project, user
-    @push_data = create_push_data(oldrev, newrev, ref)
+    
+    @push_data = build_push_data(oldrev, newrev, ref)
 
     EventCreateService.new.push(project, user, @push_data)
-    project.repository.expire_cache
     project.execute_hooks(@push_data.dup, :tag_push_hooks)
     project.execute_services(@push_data.dup, :tag_push_hooks)
 
+    project.repository.expire_cache
+
     true
   end
 
   private
 
-  def create_push_data(oldrev, newrev, ref)
-    data = Gitlab::PushDataBuilder.build(project, user, oldrev, newrev, ref, [])
-    data[:object_kind] = "tag_push"
-    data
+  def build_push_data(oldrev, newrev, ref)
+    Gitlab::PushDataBuilder.build(project, user, oldrev, newrev, ref, [])
   end
 end
diff --git a/lib/gitlab/push_data_builder.rb b/lib/gitlab/push_data_builder.rb
index 0cc6b0ac694..ea9012b8844 100644
--- a/lib/gitlab/push_data_builder.rb
+++ b/lib/gitlab/push_data_builder.rb
@@ -28,9 +28,10 @@ module Gitlab
         # Get latest 20 commits ASC
         commits_limited = commits.last(20)
 
+        type = Gitlab::Git.tag_ref?(ref) ? "tag_push" : "push"
         # Hash to be passed as post_receive_data
         data = {
-          object_kind: "push",
+          object_kind: type,
           before: oldrev,
           after: newrev,
           ref: ref,