Class: Veritrans::Events

Inherits:
Object
  • Object
show all
Defined in:
lib/veritrans/events.rb

Overview

Rack based event notification callback processor

Usage:

Rails.application.routes.draw do
  # ...
  mount Veritrans::Events.new => '/vt_events'
end

Veritrans::Events.subscribe('payment.success') do |payment|
  payment.mark_paid!(payment.masked_card)
end

All possible events:

  • payment.success == [‘authorize’, ‘capture’, ‘settlement’]

  • payment.failed == [‘deny’, ‘cancel’, ‘expire’]

  • payment.challenge # when payment.fraud_status == ‘challenge’

  • payment.authorize

  • payment.capture

  • payment.settlement

  • payment.deny

  • payment.cancel

  • payment.expire

  • error

For sinatra you can use Rack::URLMap

run Rack::URLMap.new("/" => MyApp.new, "/payment_events" => Veritrans::Events.new)

Class Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Class Attribute Details

.listeners ⇒ Object

Returns the value of attribute listeners.



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# File 'lib/veritrans/events.rb', line 106

def listeners
  @listeners
end

Class Method Details

.dispatch(new_event, event_data) ⇒ Object

Used internally to dispatch event



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# File 'lib/veritrans/events.rb', line 122

def dispatch(new_event, event_data)
  @listeners.each do |pair|
    event_type, handler = *pair

    if event_type.is_a?(String) && event_type == new_event
      handler.call(event_data)
    elsif event_type.is_a?(Regexp) && event_type =~ new_event
      handler.call(event_data, new_event)
    end
  end
end

.subscribe(*event_types, &handler) ⇒ Object

Subscribe for events. The event object will be an instance of Midtrans::Result

Midtrans::Events.subscribe('payment.success') do |payment_status|
  Order.find_by(order_id: payment_status.order_id).mark_paid!
end



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# File 'lib/veritrans/events.rb', line 114

def subscribe(*event_types, &handler)
  @listeners ||= []
  event_types.each do |event_type|
    @listeners << [event_type, handler]
  end
end

Instance Method Details

#call(env) ⇒ Object

This is rack application Can be used as:

use Veritrans::Events.new



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# File 'lib/veritrans/events.rb', line 43

def call(env)
  Veritrans.logger.info "Receive notification callback"

  post_body = env["rack.input"].read
  env["rack.input"].rewind
  request_data = Veritrans.decode_notification_json(post_body)

  Veritrans.file_logger.info("Callback for order: " +
    "#{request_data['order_id']} #{request_data['transaction_status']}\n" +
    post_body + "\n"
  )

  verified_data = Veritrans.status(request_data['transaction_id'])

  if verified_data.status_code != 404
    #puts "--- Transaction callback ---"
    #puts "Payment:        #{verified_data.data[:order_id]}"
    #puts "Payment type:   #{verified_data.data[:payment_type]}"
    #puts "Payment status: #{verified_data.data[:transaction_status]}"
    #puts "Fraud status:   #{verified_data.data[:fraud_status]}" if verified_data.data[:fraud_status]
    #puts "Payment amount: #{verified_data.data[:gross_amount]}"
    #puts "--- Transaction callback ---"

    event_name = verified_data.data[:transaction_status]
    if verified_data.data[:fraud_status] == 'challenge'
      event_name = 'challenge'
    end

    Veritrans::Events.dispatch("payment.#{event_name}", verified_data)

    if %w{capture authorize settlement}.include?(event_name)
      Veritrans::Events.dispatch("payment.success", verified_data)
    elsif event_name != 'challenge'
      Veritrans::Events.dispatch("payment.failed", verified_data)
    end

    return send_text("ok", 200)
  else
    Veritrans::Events.dispatch("error", request_data)
    Veritrans.file_logger.info("Callback verification failed:" +
      "#{request_data['order_id']} #{request_data['transaction_status']}}\n" +
      verified_data.body + "\n"
    )
    return send_text("Can not verify payment via Payment API: #{verified_data.status_message}", 404)
  end

rescue Object => error
  Veritrans.file_logger.info("Callback proccesing failed. \n" +
    "RAW_POST_DATA: #{env["rack.input"].read}\n" +
    error.message +
    error.backtrace.join("\n") + "\n"
  )
  Veritrans::Events.dispatch("error", verified_data || request_data || post_body)
  return send_text("Server error:\n#{error.message}", 500)
end

#send_text(body, status = 200) ⇒ Object

:nodoc:



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# File 'lib/veritrans/events.rb', line 99

def send_text(body, status = 200) # :nodoc:
  [status, {"Content-Type" => "text/html"}, [body]]
end