3 files changed, 58 insertions, 0 deletions
diff --git a/lib/api/internal.rb b/lib/api/internal.rb
index d235977fbd8..7eed93aba00 100644
--- a/lib/api/internal.rb
+++ b/lib/api/internal.rb
@@ -132,6 +132,18 @@ module API
 
         { success: true, recovery_codes: codes }
       end
+
+      post "/notify_post_receive" do
+        status 200
+
+        return unless Gitlab::GitalyClient.enabled?
+
+        begin
+          Gitlab::GitalyClient::Notifications.new.post_receive(params[:repo_path])
+        rescue GRPC::Unavailable => e
+          render_api_error(e, 500)
+        end
+      end
     end
   end
 end
diff --git a/lib/gitlab/gitaly_client.rb b/lib/gitlab/gitaly_client.rb
new file mode 100644
index 00000000000..b981a629fb0
--- /dev/null
+++ b/lib/gitlab/gitaly_client.rb
@@ -0,0 +1,29 @@
+require 'gitaly'
+
+module Gitlab
+  module GitalyClient
+    def self.gitaly_address
+      if Gitlab.config.gitaly.socket_path
+        "unix://#{Gitlab.config.gitaly.socket_path}"
+      end
+    end
+
+    def self.channel
+      return @channel if defined?(@channel)
+
+      @channel =
+        if enabled?
+          # NOTE: Gitaly currently runs on a Unix socket, so permissions are
+          # handled using the file system and no additional authentication is
+          # required (therefore the :this_channel_is_insecure flag)
+          GRPC::Core::Channel.new(gitaly_address, {}, :this_channel_is_insecure)
+        else
+          nil
+        end
+    end
+
+    def self.enabled?
+      gitaly_address.present?
+    end
+  end
+end
diff --git a/lib/gitlab/gitaly_client/notifications.rb b/lib/gitlab/gitaly_client/notifications.rb
new file mode 100644
index 00000000000..b827a56207f
--- /dev/null
+++ b/lib/gitlab/gitaly_client/notifications.rb
@@ -0,0 +1,17 @@
+module Gitlab
+  module GitalyClient
+    class Notifications
+      attr_accessor :stub
+
+      def initialize
+        @stub = Gitaly::Notifications::Stub.new(nil, nil, channel_override: GitalyClient.channel)
+      end
+
+      def post_receive(repo_path)
+        repository = Gitaly::Repository.new(path: repo_path)
+        request = Gitaly::PostReceiveRequest.new(repository: repository)
+        stub.post_receive(request)
+      end
+    end
+  end
+end