Add Exercise-18 solution

Add services integrations:
 * NewRelic
 * Rollbar
 * Mandrill

Gemfile

@@ -43,6 +43,12 @@ gem "whenever", require: false
 gem "http_accept_language"
 # locale data
 gem "rails-i18n", "~> 4.0.4"
+# Exception tracking and logging
+gem "rollbar"
+# The New Relic Ruby agent
+gem "newrelic_rpm"
+
+gem "mandrill-api"
 
 group :development, :test do
   # Call 'byebug' anywhere in the code to stop execution and get a debugger cli

Gemfile.lock

@@ -94,6 +94,7 @@ GEM
       http_parser.rb (~> 0.6.0)
     erubis (2.7.0)
     eventmachine (1.0.8)
+    excon (0.45.4)
     execjs (2.6.0)
     factory_girl (4.5.0)
       activesupport (>= 3.0.0)
@@ -148,6 +149,9 @@ GEM
     lumberjack (1.0.9)
     mail (2.6.3)
       mime-types (>= 1.16, < 3)
+    mandrill-api (1.0.53)
+      excon (>= 0.16.0, < 1.0)
+      json (>= 1.7.7, < 2.0)
     method_source (0.8.2)
     mime-types (2.6.1)
     mimemagic (0.3.0)
@@ -158,6 +162,7 @@ GEM
     multipart-post (2.0.0)
     nenv (0.2.0)
     netrc (0.10.3)
+    newrelic_rpm (3.13.0.299)
     nokogiri (1.6.6.2)
       mini_portile (~> 0.6.0)
     notiffany (0.0.7)
@@ -227,6 +232,7 @@ GEM
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 3.0)
       netrc (~> 0.7)
+    rollbar (2.1.2)
     rspec (3.3.0)
       rspec-core (~> 3.3.0)
       rspec-expectations (~> 3.3.0)
@@ -327,12 +333,15 @@ DEPENDENCIES
   http_accept_language
   jbuilder (~> 2.0)
   jquery-rails
+  mandrill-api
+  newrelic_rpm
   nokogiri
   paperclip
   pg
   rails (= 4.2.3)
   rails-i18n (~> 4.0.4)
   rails_12factor
+  rollbar
   rspec-rails
   sass-rails (~> 5.0)
   sdoc (~> 0.4.0)

config/application.rb

@@ -18,7 +18,7 @@ class Application < Rails::Application
 
     config.action_mailer.delivery_method = :smtp
     config.action_mailer.smtp_settings = {
-      address: "smtp.gmail.com",
+      address: "smtp.mandrillapp.com",
       port: 587,
       authentication: :plain,
       user_name: ENV["SMTP_USER"],

config/initializers/rollbar.rb

@@ -0,0 +1,54 @@
+require "rollbar/rails"
+Rollbar.configure do |config|
+  # Without configuration, Rollbar is enabled in all environments.
+  # To disable in specific environments, set config.enabled=false.
+
+  config.access_token = ENV["ROLLBAR_ACCESS_TOKEN"]
+
+  # Here we'll disable in 'test':
+  if Rails.env.test?
+    config.enabled = false
+  end
+
+  # By default, Rollbar will try to call the `current_user` controller method
+  # to fetch the logged-in user object, and then call that object's `id`,
+  # `username`, and `email` methods to fetch those properties. To customize:
+  # config.person_method = "my_current_user"
+  # config.person_id_method = "my_id"
+  # config.person_username_method = "my_username"
+  # config.person_email_method = "my_email"
+
+  # If you want to attach custom data to all exception and message reports,
+  # provide a lambda like the following. It should return a hash.
+  # config.custom_data_method = lambda { {:some_key => "some_value" } }
+
+  # Add exception class names to the exception_level_filters hash to
+  # change the level that exception is reported at. Note that if an exception
+  # has already been reported and logged the level will need to be changed
+  # via the rollbar interface.
+  # Valid levels: 'critical', 'error', 'warning', 'info', 'debug', 'ignore'
+  # 'ignore' will cause the exception to not be reported at all.
+  # config.exception_level_filters.merge!('MyCriticalException' => 'critical')
+  #
+  # You can also specify a callable, which will be called with the exception
+  # instance.
+  # config.exception_level_filters.merge!(
+  #   'MyCriticalException' => lambda { |e| 'critical' }
+  # )
+
+  # Enable asynchronous reporting (uses girl_friday or Threading if girl_friday
+  # is not installed)
+  # config.use_async = true
+  # Supply your own async handler:
+  # config.async_handler = Proc.new { |payload|
+  #  Thread.new { Rollbar.process_payload_safely(payload) }
+  # }
+
+  # Enable asynchronous reporting (using sucker_punch)
+  # config.use_sucker_punch
+
+  # Enable delayed reporting (using Sidekiq)
+  # config.use_sidekiq
+  # You can supply custom Sidekiq options:
+  # config.use_sidekiq 'queue' => 'my_queue'
+end

config/newrelic.yml

@@ -0,0 +1,49 @@
+#
+# This file configures the New Relic Agent.  New Relic monitors Ruby, Java,
+# .NET, PHP, Python and Node applications with deep visibility and low
+# overhead.  For more information, visit www.newrelic.com.
+#
+# Generated August 26, 2015
+#
+# This configuration file is custom generated for JustDevLab
+#
+# For full documentation of agent configuration options, please refer to
+# https://docs.newrelic.com/docs/agents/ruby-agent/installation-configuration/ruby-agent-configuration
+
+common: &default_settings
+  # Required license key associated with your New Relic account.
+  license_key: <%= ENV["NEW_RELIC_LICENSE_KEY"] %>
+
+  # Your application name. Renaming here affects where data displays in New
+  # Relic.  For more details, see https://docs.newrelic.com/docs/apm/new-relic-apm/maintenance/renaming-applications
+  app_name: Flashcards
+
+  # To disable the agent regardless of other settings, uncomment the following:
+  # agent_enabled: false
+
+  # Logging level for log/newrelic_agent.log
+  log_level: info
+
+
+# Environment-specific settings are in this section.
+# RAILS_ENV or RACK_ENV (as appropriate) is used to determine the environment.
+# If your application has other named environments, configure them here.
+development:
+  <<: *default_settings
+  app_name: Flashcards (Development)
+
+  # NOTE: There is substantial overhead when running in developer mode.
+  # Do not use for production or load testing.
+  developer_mode: true
+
+test:
+  <<: *default_settings
+  # It doesn't make sense to report to New Relic from automated test runs.
+  monitor_mode: false
+
+staging:
+  <<: *default_settings
+  app_name: Flashcards (Staging)
+
+production:
+  <<: *default_settings