Add cron recipe to allow per-app scheduled tasks.

Cheffile

@@ -16,3 +16,4 @@ cookbook "rails", path: "vendor/cookbooks/rails"
 cookbook "ssh_deploy_keys", path: "vendor/cookbooks/ssh_deploy_keys"
 cookbook "backups", path: "vendor/cookbooks/backups"
 cookbook "sysadmins", path: "vendor/cookbooks/sysadmins"
+cookbook "cron", path: "vendor/cookbooks/cron"

Cheffile.lock

@@ -69,6 +69,11 @@ PATH
   specs:
     backups (0.1.0)
 
+PATH
+  remote: vendor/cookbooks/cron
+  specs:
+    cron (0.0.1)
+
 PATH
   remote: vendor/cookbooks/packages
   specs:
@@ -97,6 +102,7 @@ PATH
 DEPENDENCIES
   apt (~> 2.6.1)
   backups (>= 0)
+  cron (>= 0)
   mysql (~> 5.3.6)
   nginx (~> 2.7.4)
   packages (>= 0)

Vagrantfile

@@ -110,6 +110,13 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
               server_name www.localhost;
               return 301 $scheme://localhost:8081$request_uri;
             }"
+        },
+        "cron" => {
+          "sitemap" => {
+            minute: 0,
+            hour: 5,
+            command: "rake -s sitemap:refresh"
+          }
         }
       }
     },
@@ -127,6 +134,7 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
 
       chef.add_role "postgresql"
       chef.add_role "rails_passenger"
+      chef.add_recipe "cron"
 
       chef.log_level = :info
 

nodes/sample_host.json

@@ -53,6 +53,13 @@
         "username": "<db username, max 10 characters>",
         "password": "<enter a random password>",
         "database": "<appname>_<stage>"
+      },
+      "cron": {
+        "sitemap": {
+          "minute": 0,
+          "hour": 5,
+          "command": "rake -s sitemap:refresh"
+        }
       }
     }
   }

vendor/cookbooks/cron/CHANGELOG.md

@@ -0,0 +1,2 @@
+See https://github.com/intercity/chef-repo/blob/master/CHANGELOG.md for full
+changelog

vendor/cookbooks/cron/README.md

@@ -0,0 +1,51 @@
+Cron Cookbook
+==================
+
+Schedules tasks for apps. It simply adds entries to the root crontab
+with commands that will be ran within the context of the app.
+
+Attributes
+----------
+
+#### cron::default
+<table>
+  <tr>
+    <th>Key</th>
+    <th>Type</th>
+    <th>Description</th>
+    <th>Default</th>
+  </tr>
+  <tr>
+    <td><tt>['cron']></td>
+    <td>Hash</td>
+    <td>key: identifier</td>
+    <td><tt>empty, won't schedule tasks.</tt></td>
+  </tr>
+</table>
+
+Usage
+-----
+
+Add cron to your node configuration:
+
+```@json
+{
+"cron": {
+  "sitemap": {
+    "minute": 0,
+    "hour": 5,
+    "command": "rake -s sitemap:refresh"
+  }
+}
+```
+This runs the command `..... bundle exec rake -s sitemap:refresh` every
+day at 5:00.
+
+See the full list of available attributes at [the cron resource
+documentation](http://docs.chef.io/resource_cron.html).
+
+All attributes will be passed literarally from the node configuration
+into the cron resource. With a few exceptions:
+
+* Command will be prefixed with code so it runs within the app current dir.
+* User defaults to the deploy\_user for the app ("deploy"). Be carefull when overriding.

vendor/cookbooks/cron/metadata.rb

@@ -0,0 +1,7 @@
+name "cron"
+maintainer "Bèr `berkes` Kessels"
+maintainer_email "[email protected]"
+license "MIT"
+description "Schedules tasks for apps"
+long_description IO.read(File.join(File.dirname(__FILE__), "README.md"))
+version "0.0.1"

vendor/cookbooks/cron/recipes/default.rb

@@ -0,0 +1,44 @@
+#
+# Cookbook Name:: cron
+# Recipe:: default
+#
+# Copyright 2014, Bèr `berkes` Kessels
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+return unless node[:active_applications]
+
+node[:active_applications].map do |app, app_info|
+  app_info["cron"].each do |id, crontab|
+    attributes = crontab.dup
+
+    unscoped_command = attributes.delete("command")
+    rails_env        = app_info["rails_env"] || "production"
+    user             = attributes.delete("user") || app_info["deploy_user"] || "deploy"
+    app_dir          = "#{node[:rails][:applications_root]}/#{app}/current"
+
+    command = "cd #{app_dir} && ( PATH=/opt/rbenv/shims:$PATH RAILS_ENV=#{rails_env} bundle exec #{unscoped_command} )"
+
+    cron "#{app}_#{id}" do
+      command(command)
+      user(user)
+      attributes.each { |attribute, value| send(attribute, value) }
+    end
+  end
+end