Add instrumentation to push hooks

Related to #22053

lib/gitlab_access.rb

@@ -2,6 +2,7 @@ require_relative 'gitlab_init'
 require_relative 'gitlab_net'
 require_relative 'gitlab_access_status'
 require_relative 'names_helper'
+require_relative 'gitlab_metrics'
 require 'json'
 
 class GitlabAccess
@@ -20,7 +21,9 @@ class GitlabAccess
   end
 
   def exec
-    status = api.check_access('git-receive-pack', @repo_path, @actor, @changes, @protocol)
+    status = GitlabMetrics.measure('check-access:git-receive-pack') do
+      api.check_access('git-receive-pack', @repo_path, @actor, @changes, @protocol)
+    end
 
     raise AccessDeniedError, status.message unless status.allowed?
 

lib/gitlab_custom_hook.rb

 require 'open3'
+require_relative 'gitlab_metrics'
 
 class GitlabCustomHook
   attr_reader :vars
@@ -11,21 +12,21 @@ class GitlabCustomHook
     hook = hook_file('pre-receive', repo_path)
     return true if hook.nil?
 
-    call_receive_hook(hook, changes)
+    GitlabMetrics.measure("pre-receive-hook") { call_receive_hook(hook, changes) }
   end
 
   def post_receive(changes, repo_path)
     hook = hook_file('post-receive', repo_path)
     return true if hook.nil?
 
-    call_receive_hook(hook, changes)
+    GitlabMetrics.measure("post-receive-hook") { call_receive_hook(hook, changes) }
   end
 
   def update(ref_name, old_value, new_value, repo_path)
     hook = hook_file('update', repo_path)
     return true if hook.nil?
 
-    system(vars, hook, ref_name, old_value, new_value)
+    GitlabMetrics.measure("update-hook") { system(vars, hook, ref_name, old_value, new_value) }
   end
 
   private

lib/gitlab_post_receive.rb

 require_relative 'gitlab_init'
 require_relative 'gitlab_net'
 require_relative 'gitlab_reference_counter'
+require_relative 'gitlab_metrics'
 require 'json'
 require 'base64'
 require 'securerandom'
@@ -21,14 +22,18 @@ class GitlabPostReceive
     result = update_redis
 
     begin
-      broadcast_message = api.broadcast_message
+      broadcast_message = GitlabMetrics.measure("broadcast-message") do
+        api.broadcast_message
+      end
 
       if broadcast_message.has_key?("message")
         puts
         print_broadcast_message(broadcast_message["message"])
       end
 
-      merge_request_urls = api.merge_request_urls(@repo_path, @changes)
+      merge_request_urls = GitlabMetrics.measure("merge-request-urls") do
+        api.merge_request_urls(@repo_path, @changes)
+      end
       print_merge_request_links(merge_request_urls)
     rescue GitlabNet::ApiUnreachableError
       nil