Capistrano Cachetool plugin (http://gordalina.github.io/cachetool/)

cachetool.rake

namespace :cachetool do
  CACHETOOL = 'cachetool.phar'.freeze

  desc <<~DESC
    Installs #{CACHETOOL} to the shared directory.

    This is best used after deploy:starting:

      namespace :deploy do
        after :starting, 'cachetool:install_executable'
      end

    In order to use the .phar file, the cachetool command needs to be mapped:

      stages.each do |stage|
        after stage, :map_commands do
          SSHKit.config.command_map[:cachetool] = "php \#{shared_path.join('#{CACHETOOL}')}"
        end
      end
  DESC
  task :install_executable do
    on roles(fetch(:cachetool_roles)) do
      within shared_path do
        if test '[', '!', '-e', CACHETOOL, ']'
          execute :curl, '-s', '-O', fetch(:cachetool_download_url)
          execute :chmod, '+x', 'cachetool.phar'
        end
      end
    end
  end

  task :run, %i[command] do |t, args|
    on roles(fetch(:cachetool_roles)) do
      within fetch(:cachetool_working_dir) do
        flags = fetch(:cachetool_flags) + args.extras
        execute :cachetool, args.command, *flags
      end
    end
  end

  COMMANDS = [
    ['help',                        'Displays help for a command'],
    ['list',                        'Lists commands'],
    ['self-update',                 '[selfupdate] Updates cachetool.phar to the latest version'],
    ['apc:bin:dump',                'Get a binary dump of files and user variables'],
    ['apc:bin:load',                'Load a binary dump into the APC file and user variables'],
    ['apc:cache:clear',             'Clears APC cache (user, system or all)'],
    ['apc:cache:info',              'Shows APC user & system cache information'],
    ['apc:cache:info:file',         'Shows APC file cache information'],
    ['apc:key:delete',              'Deletes an APC key'],
    ['apc:key:exists',              'Checks if an APC key exists'],
    ['apc:key:fetch',               'Shows the content of an APC key'],
    ['apc:key:store',               'Store an APC key with given value'],
    ['apc:regexp:delete',           'Deletes all APC key matching a regexp'],
    ['apc:sma:info',                'Show APC shared memory allocation information'],
    ['apcu:cache:clear',            'Clears APCu cache'],
    ['apcu:cache:info',             'Shows APCu user & system cache information'],
    ['apcu:cache:info:keys',        'Shows APCu keys cache information'],
    ['apcu:key:delete',             'Deletes an APCu key'],
    ['apcu:key:exists',             'Checks if an APCu key exists'],
    ['apcu:key:fetch',              'Shows the content of an APCu key'],
    ['apcu:key:store',              'Store an APCu key with given value'],
    ['apcu:regexp:delete',          'Deletes all APCu key matching a regexp'],
    ['apcu:sma:info',               'Show APCu shared memory allocation information'],
    ['opcache:configuration',       'Get configuration information about the cache'],
    ['opcache:invalidate:scripts',  'Remove scripts from the opcode cache'],
    ['opcache:reset',               'Resets the contents of the opcode cache'],
    ['opcache:status',              'Show summary information about the opcode cache'],
    ['opcache:status:scripts',      'Show scripts in the opcode cache'],
    ['stat:clear',                  'Clears the file status cache, including the realpath cache'],
    ['stat:realpath_get',           'Show summary information of realpath cache entries'],
    ['stat:realpath_size',          'Display size of realpath cache'],
  ].freeze

  COMMANDS.each do |(name, description)|
    desc description
    task name do |t, args|
      invoke! 'cachetool:run', name, *args.extras
    end
  end
end

namespace :load do
  task :defaults do
    set :cachetool_roles, :all
    set :cachetool_flags, []
    set :cachetool_working_dir, -> { release_path }
    set :cachetool_download_url, 'http://gordalina.github.io/cachetool/downloads/cachetool.phar'
  end
end