Merge branch 'aiionx/gitlab-shell-aiionx-post_receive_jid' into 'master'

Update post receive worker so it logs a unique JID in sidekiq

Taken from !50.

Instead of

```
2016-04-14T03:07:32.373Z 5285 TID-osycgmlyo PostReceive JID- INFO: start
2016-04-14T03:07:32.374Z 5285 TID-osycgmlyo PostReceive JID- INFO: arguments: [...]
2016-04-14T03:07:32.534Z 5285 TID-osycgmlyo PostReceive JID- INFO: done: 0.161 sec
```

Have this log

```
2016-04-14T03:07:32.373Z 5285 TID-osycgmlyo PostReceive JID-54b0b2f6616cae37e3e87f8a INFO: start
2016-04-14T03:07:32.374Z 5285 TID-osycgmlyo PostReceive JID-54b0b2f6616cae37e3e87f8a INFO: arguments: [...]
2016-04-14T03:07:32.534Z 5285 TID-osycgmlyo PostReceive JID-54b0b2f6616cae37e3e87f8a INFO: done: 0.161 sec
```


This way sidekiq can Log a unique JID in the sidekiq.log for PostReceive.
So when parsing the logs (with logstash for example) you know it belongs to that unique job.

This puts the logs in a uniform manner like the other workers that are pushed to redis (which do have a JID)
For example the ProjectWebHookWorker

```
2016-04-14T03:13:07.917Z 5285 TID-osycsh7z0 ProjectWebHookWorker JID-800085fb3cf7241fdeecc6ec INFO: start
2016-04-14T03:13:07.918Z 5285 TID-osycsh7z0 ProjectWebHookWorker JID-800085fb3cf7241fdeecc6ec INFO: arguments: [...]
2016-04-14T03:13:12.500Z 5285 TID-osycsh7z0 ProjectWebHookWorker JID-800085fb3cf7241fdeecc6ec INFO: done: 4.583 sec
```


See merge request !55

CHANGELOG

@@ -2,6 +2,10 @@ v3.0.0
   - Remove list-remote-tags command (Robert Schilling)
   - Remove rm-tag command (Robert Schilling)
   - Remove create-branch and rm-branch commands (Robert Schilling)
+  - Update PostReceive worker so it logs a unique JID in Sidekiq
+
+v2.7.2
+  - Do not prune objects during 'git gc'
 
 v2.7.1
   - Add new command to list tags from a remote repo

lib/gitlab_post_receive.rb

@@ -2,14 +2,16 @@ require_relative 'gitlab_init'
 require_relative 'gitlab_net'
 require 'json'
 require 'base64'
+require 'securerandom'
 
 class GitlabPostReceive
-  attr_reader :config, :repo_path, :changes
+  attr_reader :config, :repo_path, :changes, :jid
 
   def initialize(repo_path, actor, changes)
     @config = GitlabConfig.new
     @repo_path, @actor = repo_path.strip, actor
     @changes = changes
+    @jid = SecureRandom.hex(12)
   end
 
   def exec
@@ -71,7 +73,7 @@ class GitlabPostReceive
     changes = Base64.encode64(@changes)
 
     queue = "#{config.redis_namespace}:queue:post_receive"
-    msg = JSON.dump({ 'class' => 'PostReceive', 'args' => [@repo_path, @actor, changes] })
+    msg = JSON.dump({ 'class' => 'PostReceive', 'args' => [@repo_path, @actor, changes], 'jid' => @jid  })
     if system(*config.redis_command, 'rpush', queue, msg,
               err: '/dev/null', out: '/dev/null')
       return true

spec/gitlab_post_receive_spec.rb

@@ -50,7 +50,7 @@ describe GitlabPostReceive do
       expect(gitlab_post_receive).to receive(:system).with(
         *[
           *%w(env -i redis-cli rpush resque:gitlab:queue:post_receive), 
-          %Q/{"class":"PostReceive","args":["#{repo_path}","#{actor}",#{base64_changes.inspect}]}/,
+          %Q/{"class":"PostReceive","args":["#{repo_path}","#{actor}",#{base64_changes.inspect}],"jid":"#{gitlab_post_receive.jid}"}/,
           { err: "/dev/null", out: "/dev/null" }
         ]
       ).and_return(true)