require 'optparse'
def spawn(port)
print "Starting FCGI on port: #{port}\n "
system("#{OPTIONS[:spawner]} -f #{OPTIONS[:dispatcher]} -p #{port}")
end
OPTIONS = {
:environment => "production",
:spawner => '/usr/bin/env spawn-fcgi',
:dispatcher => File.expand_path(RAILS_ROOT + '/public/dispatch.fcgi'),
:port => 8000,
:instances => 3
}
ARGV.options do |opts|
opts.banner = "Usage: spawner [options]"
opts.separator ""
opts.on <<-EOF
Description:
The spawner is a wrapper for spawn-fcgi that makes it easier to start multiple FCGI
processes running the Rails dispatcher. The spawn-fcgi command is included with the lighttpd
web server, but can be used with both Apache and lighttpd (and any other web server supporting
externally managed FCGI processes).
You decide a starting port (default is 8000) and the number of FCGI process instances you'd
like to run. So if you pick 9100 and 3 instances, you'll start processes on 9100, 9101, and 9102.
Examples:
spawner # starts instances on 8000, 8001, and 8002
spawner -p 9100 -i 10 # starts 10 instances counting from 9100 to 9109
EOF
opts.on(" Options:")
opts.on("-p", "--port=number", Integer, "Starting port number (default: #{OPTIONS[:port]})") { |OPTIONS[:port]| }
opts.on("-i", "--instances=number", Integer, "Number of instances (default: #{OPTIONS[:instances]})") { |OPTIONS[:instances]| }
opts.on("-e", "--environment=name", String, "test|development|production (default: #{OPTIONS[:environment]})") { |OPTIONS[:environment]| }
opts.on("-s", "--spawner=path", String, "default: #{OPTIONS[:spawner]}") { |OPTIONS[:spawner]| }
opts.on("-d", "--dispatcher=path", String, "default: #{OPTIONS[:dispatcher]}") { |dispatcher| OPTIONS[:dispatcher] = File.expand_path(dispatcher) }
opts.separator ""
opts.on("-h", "--help", "Show this help message.") { puts opts; exit }
opts.parse!
end
ENV["RAILS_ENV"] = OPTIONS[:environment]
OPTIONS[:instances].times { |i| spawn(OPTIONS[:port] + i) }
