Move git post push logic to service

app/services/git_push_service.rb

@@ -0,0 +1,114 @@
+class GitPushService
+  attr_accessor :project, :user, :push_data
+
+  # This method will be called after each git update
+  # and only if the provided user and project is present in GitLab.
+  #
+  # All callbacks for post receive action should be placed here.
+  #
+  # Now this method do next:
+  #  1. Ensure project satellite exists
+  #  2. Update merge requests
+  #  3. Execute project web hooks
+  #  4. Execute project services
+  #  5. Create Push Event
+  #
+  def execute(project, user, oldrev, newrev, ref)
+    @project, @user = project, user
+
+    # Collect data for this git push
+    @push_data = post_receive_data(oldrev, newrev, ref)
+
+    project.ensure_satellite_exists
+    project.discover_default_branch
+
+    if push_to_branch?(ref, oldrev)
+      project.update_merge_requests(oldrev, newrev, ref, @user)
+      project.execute_hooks(@push_data.dup)
+      project.execute_services(@push_data.dup)
+    end
+
+    create_push_event
+  end
+
+  protected
+
+  def create_push_event
+    Event.create(
+      project: project,
+      action: Event::PUSHED,
+      data: push_data,
+      author_id: push_data[:user_id]
+    )
+  end
+
+  # Produce a hash of post-receive data
+  #
+  # data = {
+  #   before: String,
+  #   after: String,
+  #   ref: String,
+  #   user_id: String,
+  #   user_name: String,
+  #   repository: {
+  #     name: String,
+  #     url: String,
+  #     description: String,
+  #     homepage: String,
+  #   },
+  #   commits: Array,
+  #   total_commits_count: Fixnum
+  # }
+  #
+  def post_receive_data(oldrev, newrev, ref)
+    push_commits = project.repository.commits_between(oldrev, newrev)
+
+    # Total commits count
+    push_commits_count = push_commits.size
+
+    # Get latest 20 commits ASC
+    push_commits_limited = push_commits.last(20)
+
+    # Hash to be passed as post_receive_data
+    data = {
+      before: oldrev,
+      after: newrev,
+      ref: ref,
+      user_id: user.id,
+      user_name: user.name,
+      repository: {
+        name: project.name,
+        url: project.url_to_repo,
+        description: project.description,
+        homepage: project.web_url,
+      },
+      commits: [],
+      total_commits_count: push_commits_count
+    }
+
+    # For perfomance purposes maximum 20 latest commits
+    # will be passed as post receive hook data.
+    #
+    push_commits_limited.each do |commit|
+      data[:commits] << {
+        id: commit.id,
+        message: commit.safe_message,
+        timestamp: commit.date.xmlschema,
+        url: "#{Gitlab.config.gitlab.url}/#{project.path_with_namespace}/commit/#{commit.id}",
+        author: {
+          name: commit.author_name,
+          email: commit.author_email
+        }
+      }
+    end
+
+    data
+  end
+
+  def push_to_branch? ref, oldrev
+    ref_parts = ref.split('/')
+
+    # Return if this is not a push to a branch (e.g. new commits)
+    !(ref_parts[1] !~ /heads/ || oldrev == "00000000000000000000000000000000")
+  end
+end