Clockwork recipe for Capistrano 3 - ruby

Question

I'm trying to write a Clockwork recipe for Capistrano 3. After having a look at Sidekiq's recipe I've come up with this:
namespace :load do
task :defaults do
set :clockwork_default_hooks, -> { true }
set :clockwork_pid, -> { 'tmp/pids/clockwork.pid' }
set :clockwork_log, -> { "#{current_path}/log/clockwork.log" }
set :clockwork_roles, -> { :app }
set :clockwork_config, -> { 'clock.rb' }
end
end
namespace :deploy do
before :starting, :check_clockwork_hooks do
invoke 'clockwork:add_default_hooks' if fetch(:clockwork_default_hooks)
end
end
namespace :clockwork do
def clockwork_pid_full_path
if fetch(:clockwork_pid).start_with?('/')
fetch(:clockwork_pid)
else
"#{current_path}/#{fetch(:clockwork_pid)}"
end
end
task :add_default_hooks do
after 'deploy:updated', 'clockwork:stop'
after 'deploy:reverted', 'clockwork:stop'
after 'deploy:published', 'clockwork:start'
end
desc 'Stop clockwork'
task :stop do
on roles fetch(:clockwork_roles) do
if test "[ -f #{clockwork_pid_full_path} ]"
within current_path do
execute "kill -int $(cat #{clockwork_pid_full_path}) 2>/dev/null"
end
else
execute "echo 'clockwork was not running'"
end
end
end
desc 'Start clockwork'
task :start do
on roles fetch(:clockwork_roles) do
within current_path do
with rails_env: fetch(:rails_env, 'production') do
execute "export RAILS_ENV=$RAILS_ENV"
execute :bundle, :exec, :clockwork, "#{fetch(:clockwork_config)} >> #{fetch(:clockwork_log)} 2>&1 &"
end
execute "ps -eo pid,command | grep clockwork | grep -v grep | awk '{print $1}' > #{clockwork_pid_full_path}"
end
end
end
desc 'Restart clockwork'
task :restart do
invoke 'clockwork:stop'
invoke 'clockwork:start'
end
end
However, the clockwork:start task only works if I remove the 2>&1 & part at the end. If I try to start the process in the background, nothing seems to happen.
What am I doing wrong?

Answer 1

This is what I ended up with. I adapted it from a Gist I found.
namespace :clockwork do
desc "Stop clockwork"
task :stop do
on roles(:app) do
within release_path do
with rails_env: fetch(:rails_env) do
execute :bundle, :exec, :clockworkd, "-c clock.rb --pid-dir=#{cw_pid_dir} --log-dir=#{cw_log_dir} --log stop"
end
end
end
end
desc "Clockwork status"
task :status do
on roles(:app) do
within release_path do
with rails_env: fetch(:rails_env) do
execute :bundle, :exec, :clockworkd, "-c clock.rb --pid-dir=#{cw_pid_dir} --log-dir=#{cw_log_dir} --log status"
end
end
end
end
desc "Start clockwork"
task :start do
on roles(:app) do
within release_path do
with rails_env: fetch(:rails_env) do
execute :bundle, :exec, :clockworkd, "-c clock.rb --pid-dir=#{cw_pid_dir} --log-dir=#{cw_log_dir} --log start"
end
end
end
end
desc "Restart clockwork"
task :restart do
on roles(:app) do
within release_path do
with rails_env: fetch(:rails_env) do
execute :bundle, :exec, :clockworkd, "-c clock.rb --pid-dir=#{cw_pid_dir} --log-dir=#{cw_log_dir} --log restart"
end
end
end
end
def cw_log_dir
"#{shared_path}/log"
end
def cw_pid_dir
"#{shared_path}/tmp/pids"
end
def rails_env
fetch(:rails_env, false) ? "RAILS_ENV=#{fetch(:rails_env)}" : ''
end
end

Answer 2

Try this gem capistrano-clockwork.
It's the most easy way that worked very well to me. I tried several options of 'gists' but no success.
You just need update this files Gemfile, Capifile and deploy.rb.
Gemfile:
gem 'daemons'
gem 'capistrano-clockwork', group: :development
Capfile:
require 'capistrano/clockwork'
deploy.rb:
set :clockwork_file, "lib/name_of_your_clockwork_config.rb"
Remember to execute bundle install before deploy ;)