fast automerge: base implementation

lib/gitlab_merge.rb

@@ -1,23 +1,20 @@
 class GitlabMerge
-  attr_accessor :project, :merge_path, :merge_request, :user
+  attr_accessor :project, :merge_request, :user
 
   def initialize(merge_request, user)
     self.user = user
     self.merge_request = merge_request
     self.project = merge_request.project
-    self.merge_path = File.join(Rails.root, "tmp", "merge_repo", project.path, merge_request.id.to_s)
-    FileUtils.rm_rf(merge_path)
-    FileUtils.mkdir_p merge_path
   end
 
   def can_be_merged?
-    pull do |repo, output|
+    process do |repo, output|
       !(output =~ /Automatic merge failed/)
     end
   end
 
   def merge
-    pull do |repo, output|
+    process do |repo, output|
       if output =~ /Automatic merge failed/
         false  
       else 
@@ -27,19 +24,20 @@ class GitlabMerge
     end
   end
 
-  def pull
+  def process
     Grit::Git.with_timeout(30.seconds) do 
       File.open(File.join(Rails.root, "tmp", "merge_repo", "#{project.path}.lock"), "w+") do |f|
         f.flock(File::LOCK_EX)
         
-        self.project.repo.git.clone({:branch => merge_request.target_branch}, project.url_to_repo, merge_path)
-        unless File.exist?(self.merge_path)
-          raise "Gitlab user do not have access to repo. You should run: rake gitlab_enable_automerge"
+        unless project.satellite_exists?
+          raise "You should run: rake gitlab_enable_automerge"
         end
-        Dir.chdir(merge_path) do
+        Dir.chdir(project.path_to_repo_satellite) do
           merge_repo = Grit::Repo.new('.')
+          merge_repo.git.sh "git fetch origin"
           merge_repo.git.sh "git config user.name \"#{user.name}\""
           merge_repo.git.sh "git config user.email \"#{user.email}\""
+          merge_repo.git.sh "git checkout -b #{merge_request.target_branch} origin/#{merge_request.target_branch}"
           output = merge_repo.git.pull({}, "--no-ff", "origin", merge_request.source_branch)
           yield(merge_repo, output)
         end

lib/tasks/gitlab/enable_automerge.rake

@@ -6,6 +6,13 @@ namespace :gitlab do
         git.admin_all_repo
       end
 
+      Project.find_each do |project|
+        if project.repo_exists? && !project.satellite_exists?
+          puts "Creating satellite for #{project.name}...".green
+          project.create_repo_satellite
+        end
+      end
+
       puts "Done!".green
     end
   end