Capistrano recipe for Mailman

mailman_capistrano.rb

set :mailman_cmd, -> { "#{fetch(:bundle_cmd, 'bundle')} exec mailman" }
set :mailman_config, -> { "#{current_path}/config/mailman.rb" }
set :mailman_role, -> { :app }
set :mailman_pid, -> { "#{current_path}/tmp/pids/mailman.pid" }

namespace :mailman do
  desc 'Stop mailman'
  task :stop do
    on roles(:app) do
      execute "if [ -d #{current_path} ] && [ -f #{fetch(:mailman_pid)} ] && kill -0 `cat #{fetch(:mailman_pid)}` > /dev/null 2>&1; then cd #{current_path} && rm #{fetch(:mailman_pid)} ; else echo 'Mailman is not running'; fi"
    end
  end

  desc 'Start mailman'
  task :start do
    on roles(:app) do
      execute "cd #{current_path} ; nohup #{fetch(:mailman_cmd)} -c #{fetch(:mailman_config)} -p #{fetch(:mailman_pid)} -e #{fetch(:rails_env, 'production')} >> #{current_path}/log/mailman.log 2>&1 &", pty: false
    end
  end

  desc 'Restart mailman'
  task :restart do
    invoke 'mailman:stop'
    invoke 'mailman:start'
  end
end

before 'puma:stop', 'mailman:stop'
after 'puma:start', 'mailman:start'
before 'puma:restart', 'mailman:restart'