lib/ refactoring. Module Gitlabhq renamed to Gitlab

lib/gitlab/merge.rb

@@ -0,0 +1,60 @@
+module Gitlab
+  class Merge
+    attr_accessor :project, :merge_request, :user
+
+    def initialize(merge_request, user)
+      self.user = user
+      self.merge_request = merge_request
+      self.project = merge_request.project
+    end
+
+    def can_be_merged?
+      result = false
+      process do |repo, output|
+        result = !(output =~ /CONFLICT/)
+      end
+      result
+    end
+
+    def merge
+      process do |repo, output|
+        if output =~ /CONFLICT/
+          false  
+        else 
+          repo.git.push({}, "origin", merge_request.target_branch)
+          true
+        end
+      end
+    end
+
+    def process
+      Grit::Git.with_timeout(30.seconds) do
+        lock_file = File.join(Rails.root, "tmp", "merge_repo_#{project.path}.lock")
+
+        File.open(lock_file, "w+") do |f|
+          f.flock(File::LOCK_EX)
+
+          unless project.satellite.exists?
+            raise "You should run: rake gitlab:app:enable_automerge"
+          end
+
+          project.satellite.clear
+
+          Dir.chdir(project.satellite.path) do
+            merge_repo = Grit::Repo.new('.')
+            merge_repo.git.sh "git reset --hard"
+            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
+        end
+      end
+
+    rescue Grit::Git::GitTimeout
+      return false
+    end
+  end
+end