Class: Rack::EmailExceptions

Inherits:
Object
  • Object
show all
Defined in:
lib/rack/email_exceptions.rb

Instance Method Summary collapse

Constructor Details

#initialize(app, prefix, email) ⇒ EmailExceptions

Store the prefix to use in the email in addition to the next application.



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# File 'lib/rack/email_exceptions.rb', line 11

def initialize(app, prefix, email)
  @app = app
  @prefix = prefix
  @email = email
end

Instance Method Details

#call(env) ⇒ Object

Rescue any errors raised by calling the next application, and if there is an error, email about it before reraising it.



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# File 'lib/rack/email_exceptions.rb', line 19

def call(env)
  @app.call(env)
rescue StandardError, ScriptError => e
  body = <<END
From: #{@email}\r
To: #{@email}\r
Subject: [#{@prefix}] Unhandled Error Raised by Rack App or Middleware\r
\r
\r
Error: #{e.class}: #{e.message}

Backtrace:

#{e.backtrace.join("\n")}

ENV:

#{env.map{|k, v| "#{k.inspect} => #{v.inspect}"}.sort.join("\n")}
END

  # :nocov:
  # Don't verify localhost hostname, to avoid SSL errors raised in newer versions of net/smtp
  smtp_params = Net::SMTP.method(:start).parameters.include?([:key, :tls_verify]) ? {tls_verify: false, tls_hostname: 'localhost'} : {}
  # :nocov:

  Net::SMTP.start('127.0.0.1', **smtp_params){|s| s.send_message(body, @email, @email)}

  raise
end