[refs #134] add post receive hook to repos

app/models/git_hook.rb

@@ -0,0 +1,56 @@
+class GitHook
+  attr_reader :repo, :newrev, :oldrev, :newrev_type, :oldrev_type, :refname,
+                      :change_type, :rev, :rev_type, :refname_type, :owner, :project
+
+  def initialize(owner_uname, repo, newrev, oldrev, ref, newrev_type, oldrev_type)
+    @repo, @newrev, @oldrev, @refname, @newrev_type, @oldrev_type = repo, newrev, oldrev, ref, newrev_type, oldrev_type
+    @owner = User.find_by_uname owner_uname
+    @project = @owner.projects.where(:name => repo).first
+    @change_type = git_change_type
+    git_revision_types
+    commit_type
+  end
+
+  def git_change_type
+    if @oldrev =~ /0+$/
+      return 'create'
+    elsif @newrev =~ /0+$/
+      return 'delete'
+    else
+      return 'update'
+    end
+  end
+
+  def git_revision_types
+    case @change_type
+      when 'create', 'update'
+        @rev = @newrev
+        @rev_type = @newrev_type
+      when 'delete'
+        @rev = @oldrev
+        @rev_type = @oldrev_type
+    end
+  end
+
+  def commit_type
+    if @refname =~ /refs\/tags\/*/ && @rev_type == 'commit'
+        # un-annotated tag
+        @refname_type= 'tag'
+        #~ short_refname=refname + '##refs/tags/'
+    elsif @refname =~ /refs\/tags\/*/ && @rev_type == 'tag'
+        # annotated tag
+        @refname_type="annotated tag"
+        #~ short_refname= refname + '##refs/tags/'
+    elsif @refname =~ /refs\/heads\/*/ && @rev_type == 'commit'
+        # branch
+        @refname_type= 'branch'
+    elsif @refname =~ /refs\/remotes\/*'/ && @rev_type == 'commit'
+      # tracking branch
+      @refname_type="tracking branch"
+      @short_refname= @refname + '##refs/remotes/'
+    else
+        # Anything else (is there anything else?)
+        @refname_type= "*** Unknown type of update to $refname (#{rev_type})"
+    end
+  end
+end

app/models/project.rb

@@ -162,6 +162,11 @@ class Project < ActiveRecord::Base
     owner == user
   end
 
+  def self.process_hook(owner_uname, repo, newrev, oldrev, ref, newrev_type, oldrev_type)
+    rec = GitHook.new(owner_uname, repo, newrev, oldrev, ref, newrev_type, oldrev_type)
+    #ActivityFeedObserver.instance.after_create rec # for example
+  end
+
   protected
 
   def build_path(dir)
@@ -178,6 +183,7 @@ class Project < ActiveRecord::Base
 
   def create_git_repo
     is_root? ? Grit::Repo.init_bare(path) : parent.git_repository.repo.delay.fork_bare(path)
+    write_hook.delay
   end
 
   def destroy_git_repo
@@ -205,4 +211,10 @@ class Project < ActiveRecord::Base
     FileUtils.rm_rf wiki_path
   end
 
+  def write_hook
+    hook_file = File.join(path, 'hooks', 'post-receive')
+    FileUtils.cp(File.join(::Rails.root.to_s, 'lib', 'post-receive-hook'), hook_file)
+    #File.chmod(0775, hook_file) # need?
+  rescue Exception # FIXME
+  end
 end

db/migrate/20120131141651_write_git_hook_to_projects.rb

@@ -0,0 +1,13 @@
+class WriteGitHookToProjects < ActiveRecord::Migration
+  def self.up
+    origin_hook = File.join(::Rails.root.to_s, 'lib', 'post-receive-hook')
+    Project.all.each do |project|
+      hook_file = File.join(project.path, 'hooks', 'post-receive')
+      FileUtils.cp(origin_hook, hook_file)
+    end
+  end
+
+  def self.down
+    Project.all.each { |project| FileUtils.rm_rf File.join(project.path, 'hooks', 'post-receive')}
+  end
+end

lib/post-receive-hook

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+# This file was placed here by rosa-team. It makes sure that your pushed commits will be processed properly.
+
+pwd=`pwd`
+reponame=`basename $pwd .git`
+owner=`basename \`dirname $pwd\``
+
+while read oldrev newrev ref
+do
+  newrev_type=$(git cat-file -t $newrev 2> /dev/null)
+  oldrev_type=$(git cat-file -t "$oldrev" 2> /dev/null)
+
+  /bin/bash -l -c "cd /srv/rosa_build/current && bundle exec rails runner 'Project.delay.process_hook(\"$owner\", \"$reponame\", \"$newrev\", \"$oldrev\", \"$ref\", \"$newrev_type\", \"$oldrev_type\")'"
+done