A quick script to call a Phusion Passenger process directly to assist in debugging server issues.

test-direct-http-request-to-passenger

#!/usr/bin/env ruby

status = `passenger-status -v --show=xml`

pid_to_show = ARGV.first
processes = {}

def extract(tag_name, xml)
  if xml =~ /<#{tag_name}>(.*?)<\/#{tag_name}>/s
    $1.to_s.strip
  else
    ''
  end
end

def extract_all(tag_name, xml)
  xml.scan(/<#{tag_name}>(.*?)<\/#{tag_name}>/s) do |(tag_content,)|
    yield tag_content
  end
end

extract_all 'process', status.to_s do |process|
  pid  = extract 'pid', process
  pass = extract 'connect_password', process
  http = nil

  extract_all 'server_socket', extract('server_sockets', process) do |socket|
    name = extract 'name', socket
    http = extract 'address', socket if name == 'http'
  end

  processes[pid] = {:pass => pass, :address => http}
end

while pid_to_show.nil?
  puts "Select a PID to send the request to:"
  processes.each do |pid, process|
    puts "#{pid} at #{process[:address]}"
  end

  pid = gets.strip
  if processes.key?(pid)
    pid_to_show = pid
    break
  end
end

process = processes[pid_to_show]
command = "curl -H 'X-Passenger-Connect-Password: #{process[:pass]}' '#{process[:address]}'"
system command
puts "\n\nRequested PID #{pid_to_show} by HTTP with #{command}"