Class: PhusionPassenger::Standalone::AppFinder

Inherits:
Object
  • Object
show all
Defined in:
lib/phusion_passenger/standalone/app_finder.rb

Overview

Security note: can run arbitrary ruby code by evaluating passenger.conf

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(dirs, options = {}) ⇒ AppFinder 



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# File 'lib/phusion_passenger/standalone/app_finder.rb', line 39

def initialize(dirs, options = {})
  @dirs = dirs
  @options = options
end

Instance Attribute Details

#apps ⇒ Object (readonly)

Returns the value of attribute apps.



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# File 'lib/phusion_passenger/standalone/app_finder.rb', line 31

def apps
  @apps
end

#dirs ⇒ Object

Returns the value of attribute dirs.



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# File 'lib/phusion_passenger/standalone/app_finder.rb', line 30

def dirs
  @dirs
end

Class Method Details

.looks_like_app_directory?(dir) ⇒ Boolean 



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# File 'lib/phusion_passenger/standalone/app_finder.rb', line 33

def self.looks_like_app_directory?(dir)
  return File.exist?("#{dir}/config.ru") ||
    File.exist?("#{dir}/config/environment.rb") ||
    File.exist?("#{dir}/passenger_wsgi.py")
end

Instance Method Details

#monitor(termination_pipe) ⇒ Object 



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# File 'lib/phusion_passenger/standalone/app_finder.rb', line 77

def monitor(termination_pipe)
  raise "You must call #scan first" if !@apps
  
  watcher = PhusionPassenger::Utils::FileSystemWatcher.new(@watchlist, termination_pipe)
  if wait_on_io(termination_pipe, 3)
    return
  end
  
  while true
    changed = watcher.wait_for_change
    watcher.close
    if changed
      old_apps = @apps
      # The change could be caused by a write to some passenger.conf file.
      # Wait for a short period so that the write has a chance to finish.
      if wait_on_io(termination_pipe, 0.25)
        return
      end
      
      new_apps = scan
      watcher = PhusionPassenger::Utils::FileSystemWatcher.new(@watchlist, termination_pipe)
      if old_apps != new_apps
        yield(new_apps)
      end
      
      # Don't process change events again for a short while,
      # but do detect changes while waiting.
      if wait_on_io(termination_pipe, 3)
        return
      end
    else
      return
    end
  end
ensure
  watcher.close if watcher
end

#scan ⇒ Object 



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# File 'lib/phusion_passenger/standalone/app_finder.rb', line 44

def scan
  apps = []
  watchlist = []
  
  app_root = find_app_root
  apps << {
    :server_names => ["_"],
    :root => app_root
  }
  watchlist << app_root
  watchlist << "#{app_root}/config" if File.exist?("#{app_root}/config")
  watchlist << "#{app_root}/passenger.conf" if File.exist?("#{app_root}/passenger.conf")
  
  apps.sort! do |a, b|
    a[:root] <=> b[:root]
  end
  apps.map! do |app|
    config_filename = File.join(app[:root], "passenger.conf")
    if File.exist?(config_filename)
      local_options = load_config_file(:local_config, config_filename)
      merged_options = @options.merge(app)
      merged_options.merge!(local_options)
      merged_options
    else
      @options.merge(app)
    end
  end
  
  @apps = apps
  @watchlist = watchlist
  return apps
end