restart resque-pool on deploy

config/deploy.rb

@@ -18,48 +18,26 @@
 # Default branch is :master
 set :branch, ENV['REVISION'] || ENV['BRANCH_NAME'] || 'master'
 
-set :linked_dirs, %w[
-  tmp/pids
-  tmp/cache
-  tmp/sockets
-  public/assets
-]
+append :linked_dirs, "tmp/pids", "tmp/cache", "tmp/sockets", "public/assets"
 
-set :linked_files, %w[
-  config/blacklight.yml
-  config/database.yml
-  config/fedora.yml
-  config/redis.yml
-  config/resque-pool.yml
-  config/role_map.yml
-  config/secrets.yml
-  config/solr.yml
-]
+append :linked_files, "config/blacklight.yml", "config/database.yml", "config/fedora.yml", "config/redis.yml", "config/resque-pool.yml", "config/role_map.yml", "config/secrets.yml", "config/solr.yml"
 
-# Default branch is :master
-# ask :branch, `git rev-parse --abbrev-ref HEAD`.chomp
-
-# Default deploy_to directory is /var/www/my_app_name
-# set :deploy_to, "/var/www/my_app_name"
-
-# Default value for :format is :airbrussh.
-# set :format, :airbrussh
-
-# You can configure the Airbrussh format using :format_options.
-# These are the defaults.
-# set :format_options, command_output: true, log_file: "log/capistrano.log", color: :auto, truncate: :auto
-
-# Default value for :pty is false
-# set :pty, true
+# restart resque-pool
+require 'resque'
 
-# Default value for :linked_files is []
-# append :linked_files, "config/database.yml", "config/secrets.yml"
+set :resque_kill_signal, 'QUIT'
 
-# Default value for linked_dirs is []
-# append :linked_dirs, "log", "tmp/pids", "tmp/cache", "tmp/sockets", "public/system"
+namespace :deploy do
+  before :restart, 'resque:pool:stop'
 
-# Default value for default_env is {}
-# set :default_env, { path: "/opt/ruby/bin:$PATH" }
+  after :restart, :clear_cache do
+    on roles(:web), in: :groups, limit: 3, wait: 10 do
+      # Here we can do anything such as:
+      # within release_path do
+      #   execute :rake, 'cache:clear'
+      # end
+    end
+  end
 
-# Default value for keep_releases is 5
-# set :keep_releases, 5
+  after :clear_cache, 'resque:pool:start'
+end

lib/capistrano/tasks/resque.rake

@@ -0,0 +1,34 @@
+namespace :resque do
+  namespace :pool do
+    desc 'Stop resque pool'
+    task :stop do
+      on roles(:resque_pool), in: :sequence, wait: 5 do
+        # Shuts down resque_pool master if pid exists
+        if test("[ -f #{shared_path}/tmp/pids/resque-pool.pid ]")
+          execute "export master_pid=$(cat #{shared_path}/tmp/pids/resque-pool.pid) && kill -QUIT $master_pid"
+        else
+          warn 'No resque-pool pid found'
+        end
+      end
+    end
+
+    desc 'Start resque pool'
+    task :start do
+      on roles(:resque_pool), in: :sequence, wait: 10 do
+        # Starts a new resque_pool master
+        execute "cd #{release_path} && bundle exec resque-pool -d -E #{fetch(:rails_env)} -c config/resque-pool.yml -p #{shared_path}/tmp/pids/resque-pool.pid -e #{fetch(:resque_stderr_log)} -o #{fetch(:resque_stdout_log)}"
+      end
+    end
+
+    desc 'Restart resque pool'
+    task :restart do
+      invoke 'resque:pool:stop'
+      invoke 'resque:pool:start'
+    end
+  end
+
+  # From https://github.com/sshingler/capistrano-resque/blob/master/lib/capistrano-resque/tasks/capistrano-resque.rake
+  def output_redirection
+    ">> #{fetch(:resque_stdout_log)} 2>> #{fetch(:resque_stderr_log)}"
+  end
+end