initial commit for docker manager

2013-11-13 17:43:35 +11:00 · 2013-11-13 17:43:35 +11:00 · 2bb95a06a9
commit 2bb95a06a9
8 changed files with 147 additions and 0 deletions
--- a/app/assets/javascripts/docker_manager.js
+++ b/app/assets/javascripts/docker_manager.js
--- a/app/controllers/docker_manager/admin_controller.rb
+++ b/app/controllers/docker_manager/admin_controller.rb
@ -0,0 +1,10 @@
+module DockerManager
+  class AdminController < DockerManager::ApplicationController
+    layout nil
+
+    def index
+      require_dependency 'docker_manager/git_repo'
+      @main_repo = DockerManager::GitRepo.new(Rails.root)
+    end
+  end
+end
--- a/app/controllers/docker_manager/application_controller.rb
+++ b/app/controllers/docker_manager/application_controller.rb
@ -0,0 +1,15 @@
+module DockerManager
+  class ApplicationController < ActionController::Base
+
+    include CurrentUser
+
+    before_filter :ensure_admin
+
+    protected
+
+    def ensure_admin
+      raise Discourse::InvalidAccess.new unless current_user.admin?
+    end
+
+  end
+end
--- a/app/views/docker_manager/admin/_git_status.html.erb
+++ b/app/views/docker_manager/admin/_git_status.html.erb
@ -0,0 +1,10 @@
+<% if repo.valid? %>
+  Current version: <%= repo.latest_local_commit %> (<%= time_ago_in_words repo.latest_local_commit_date %> ago),
+  Remote version: <a href="<%= repo.url %>"><%= repo.latest_origin_commit %></a> (<%= time_ago_in_words repo.latest_origin_commit_date %> ago)
+  <% if repo.commits_behind > 0 %>
+    commits behind: <%= repo.commits_behind %>
+    <button action="">upgrade</button>
+  <% end %>
+<% else %>
+    Not under source control.
+<% end %>
--- a/app/views/docker_manager/admin/index.html.erb
+++ b/app/views/docker_manager/admin/index.html.erb
@ -0,0 +1,22 @@
+<html>
+<body>
+<h2>Discourse</h2>
+<p>
+<%= render partial: 'git_status', locals: {repo: @main_repo} %>
+</p>
+
+<h2>Plugins</h2>
+<ul>
+  <% Discourse.plugins.each do |plugin| %>
+    <li>
+      <%= plugin.name %> -
+      <%= render partial: 'git_status', locals: {repo: DockerManager::GitRepo.new(File.dirname(plugin.path))} %>
+    </li>
+  <% end %>
+</ul>
+
+<h2>Processes</h2>
+
+<h2>Log</h2>
+</body>
+</html>
--- a/config/routes.rb
+++ b/config/routes.rb
@ -0,0 +1,3 @@
+DockerManager::Engine.routes.draw do
+  get "admin/docker" => "admin#index"
+end
--- a/lib/docker_manager/git_repo.rb
+++ b/lib/docker_manager/git_repo.rb
@ -0,0 +1,67 @@
+# like Grit just very very minimal
+class DockerManager::GitRepo
+  attr_reader :path
+
+  def initialize(path)
+    @path = path
+    @memoize = {}
+  end
+
+  def valid?
+    File.directory?("#{path}/.git")
+  end
+
+  def latest_local_commit
+    run "rev-parse --short HEAD"
+  end
+
+  def latest_origin_commit
+    run "rev-parse --short #{tracking_branch}"
+  end
+
+  def latest_origin_commit_date
+    commit_date(latest_origin_commit)
+  end
+
+  def latest_local_commit_date
+    commit_date(latest_local_commit)
+  end
+
+  def commits_behind
+    run("rev-list --count #{tracking_branch}..HEAD").to_i
+  end
+
+  def url
+    url = run "config --get remote.origin.url"
+    if url =~ /^git/
+      # hack so it works with git urls
+      url = "https://github.com/#{url.split(":")[1]}"
+    end
+  end
+
+  protected
+
+  def commit_date(commit)
+    unix_timestamp = run('show -s --format="%ct" ' << commit).to_i
+    Time.at(unix_timestamp).to_datetime
+  end
+
+  def tracking_branch
+    run "for-each-ref --format='%(upstream:short)' $(git symbolic-ref -q HEAD)"
+  end
+
+  def ensure_updated
+    @updated ||= Thread.new do
+                   # this is a very slow operation, make it async
+                   `cd #{path} && git remote update`
+                 end
+  end
+
+  def run(cmd)
+    ensure_updated
+    @memoize[cmd] ||= `cd #{path} && git #{cmd}`.strip
+  rescue => e
+    p e
+  end
+
+end
--- a/plugin.rb
+++ b/plugin.rb
@ -0,0 +1,20 @@
+# name: docker_manager
+# about: Docker manager for Discourse image
+# version: 0.1
+# authors: Sam Saffron
+
+module ::DockerManager
+  class Engine < ::Rails::Engine
+    engine_name "docker_manager"
+    isolate_namespace DockerManager
+  end
+end
+
+Rails.configuration.assets.precompile += ['docker_manager.js']
+
+after_initialize do
+
+  Discourse::Application.routes.append do
+    mount ::DockerManager::Engine, at: "/"
+  end
+end