Я пытаюсь использовать MidiSmtpServer для получения электронной почты в приложении Heroku и использую код в одном из примеров, которые показывают документы. Однако я не знаю, куда поместить этот код для запуска SMTP-сервера после Puma или где его вообще нужно запустить. Использование on_worker_boot в puma.rb не работает.
puma.rb:
# Puma can serve each request in a thread from an internal thread pool.
# The `threads` method setting takes two numbers: a minimum and maximum.
# Any libraries that use thread pools should be configured to match
# the maximum value specified for Puma. Default is set to 5 threads for minimum
# and maximum; this matches the default thread size of Active Record.
#
max_threads_count = ENV.fetch("RAILS_MAX_THREADS") { 5 }
min_threads_count = ENV.fetch("RAILS_MIN_THREADS") { max_threads_count }
threads min_threads_count, max_threads_count
# Specifies the `port` that Puma will listen on to receive requests; default is 3000.
#
port ENV.fetch("PORT") { 3000 }
# Specifies the `environment` that Puma will run in.
#
environment ENV.fetch("RAILS_ENV") { "development" }
# Specifies the `pidfile` that Puma will use.
pidfile ENV.fetch("PIDFILE") { "tmp/pids/server.pid" }
# Specifies the number of `workers` to boot in clustered mode.
# Workers are forked web server processes. If using threads and workers together
# the concurrency of the application would be max `threads` * `workers`.
# Workers do not work on JRuby or Windows (both of which do not support
# processes).
#
# workers ENV.fetch("WEB_CONCURRENCY") { 2 }
require "midi-smtp-server"
require "mail"
on_worker_boot do
class MySmtpd < MidiSmtpServer::Smtpd
def on_message_data_event(ctx)
puts "[#{ctx[:envelope][:from]}] for recipient(s): [#{ctx[:envelope][:to]}]..."
# Just decode message ones to make sure, that this message ist readable
@mail = Mail.read_from_string(ctx[:message][:data])
# handle incoming mail, just show the message source
puts @mail.to_s
end
end
# try to gracefully shutdown on Ctrl-C
trap("INT") do
puts "Interrupted, exit now..."
exit 0
end
# Output for debug
puts "#{Time.now}: Starting MySmtpd..."
# Create a new server instance listening at localhost interfaces 127.0.0.1:2525
# and accepting a maximum of 4 simultaneous connections
server = MySmtpd.new(2525, "0.0.0.0", 4)
# setup exit code
at_exit do
# check to shutdown connection
if server # Output for debug
puts "#{Time.now}: Shutdown MySmtpd..." # stop all threads and connections gracefully
server.stop
end # Output for debug
puts "#{Time.now}: MySmtpd down!\n"
end
# Start the server
server.start
# Run on server forever
server.join
end
# Use the `preload_app!` method when specifying a `workers` number.
# This directive tells Puma to first boot the application and load code
# before forking the application. This takes advantage of Copy On Write
# process behavior so workers use less memory.
#
# preload_app!
# Allow puma to be restarted by `rails restart` command.
plugin :tmp_restart