First draft of a supervisor cookbook

django/recipes/default.rb

@@ -11,3 +11,8 @@
   group node[:sites][:group]
   mode node[:sites][:mode]
 end
+
+if node[:django][:app_server] == "gunicorn"
+  # Nginx can be used with Gunicorn without compiling a module
+  include_recipe "nginx"
+end

rails/definitions/rails_app.rb

@@ -32,6 +32,13 @@
     })
   end
 
+  execute "install required gems" do
+    command "sudo rake gems:install RAILS_ENV=#{node[:rails][:environment]}"
+    cwd "#{path}/current"
+    action :nothing
+    ignore_failure true
+  end
+
   deploy_revision path do
     user params[:user]
     group grp
@@ -41,13 +48,6 @@
     params[:deploy_settings].each_pair do |func_name, param_value|
       send(func_name, param_value)
     end
-    notifies :run, "execute[installing required gems]"
-  end
-
-  execute "installing required gems" do
-    command "sudo rake gems:install RAILS_ENV=#{node[:rails][:environment]}"
-    cwd "#{path}/current"
-    action :nothing
-    ignore_failure true
+    notifies :run, resources(:execute => "install required gems")
   end
 end

supervisor/definitions/supervisor_program.rb

@@ -0,0 +1,40 @@
+define :supervisor_program, :autostart => true, do
+  include_recipe "supervisor"
+
+  if params[:exitcodes]
+    exitcodes = params[:exitcodes].join(",")
+  else
+    exitcodes = nil
+  end
+
+  if params[:environment]
+    envsettings = []
+    params[:environment].each_pair do |key, value|
+      envsettings.push("#{key}=#{value}")
+    end
+    environment = envsettings.join(",")
+  else
+    environment = nil
+  end
+
+  template "/etc/supervisor/conf.d/#{params[:name].conf}" do
+    source "program.conf.erb"
+    user "root"
+    group "root"
+    mode "0644"
+    variables :name => params[:name],
+      :command => params[:command],
+      :directory => params[:directory],
+      :user => params[:user],
+      :autostart => params[:autostart],
+      :autorestart => params[:autorestart],
+      :exitcodes => exitcodes,
+      :startretries => params[:startretries],
+      :environment => environment,
+      :stdout_logfile => params[:stdout_logfile],
+      :stderr_logfile => params[:stderr_logfile],
+      :redirect_stderr => params[:redirect_stderr],
+      :stopsignal => params[:stopsignal]
+    notifies :reload, resources(:service => "supervisor")
+  end
+end

supervisor/files/default/supervisord.conf

@@ -0,0 +1,28 @@
+; supervisor config file
+
+[unix_http_server]
+file=/var/run//supervisor.sock   ; (the path to the socket file)
+chmod=0700                       ; sockef file mode (default 0700)
+
+[supervisord]
+logfile=/var/log/supervisor/supervisord.log ; (main log file;default $CWD/supervisord.log)
+pidfile=/var/run/supervisord.pid ; (supervisord pidfile;default supervisord.pid)
+childlogdir=/var/log/supervisor            ; ('AUTO' child log dir, default $TEMP)
+
+; the below section must remain in the config file for RPC
+; (supervisorctl/web interface) to work, additional interfaces may be
+; added by defining them in separate rpcinterface: sections
+[rpcinterface:supervisor]
+supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface
+
+[supervisorctl]
+serverurl=unix:///var/run//supervisor.sock ; use a unix:// URL  for a unix socket
+
+; The [include] section can just contain the "files" setting.  This
+; setting can list multiple files (separated by whitespace or
+; newlines).  It can also contain wildcards.  The filenames are
+; interpreted as relative to this file.  Included files *cannot*
+; include files themselves.
+
+[include]
+files = /etc/supervisor/conf.d/*.conf

supervisor/recipes/default.rb

@@ -0,0 +1,14 @@
+package "supervisor"
+
+cookbook_file "/etc/supervisor/supervisord.conf" do
+  source "supervisord.conf.erb"
+  owner "root"
+  group "root"
+  mode "0644"
+end
+
+service "supervisor" do
+  supports :status => true, :restart => true, :reload => true
+  reload_command "supervisorctl update"
+  action [:enable, :start]
+end

supervisor/templates/default/program.conf.erb

@@ -0,0 +1,13 @@
+[program:<%= @name %>]
+command=<%= @command %>
+<% if @directory %>directory=<%= @directory %><% end %>
+<% if @user %>user=<%= @user %><% end %>
+<% if not @autostart %>autostart=false<% end %>
+<% if @autorestart %>autorestart=<%= @autorestart %><% end %>
+<% if @exitcodes %>exitcodes=<%= @exitcodes %><% end %>
+<% if @startretries %>startretries=<%= @startretries %><% end %>
+<% if @environment %>environment=<%= @environment %><% end %>
+<% if @stdout_logfile %>stdout_logfile=<%= @stdout_logfile %><% end %>
+<% if @stderr_logfile %>stderr_logfile=<%= @stderr_logfile %><% end %>
+<% if @redirect_stderr %>redirect_stderr=true<% end %>
+<% if @stopsignal %>stopsignal=<%= @stopsignal %><% end %>