Maintenance: Only load gems when they are needed to save memory otherwise.

.gitlab/ci/integration/slack.yml

@@ -10,6 +10,4 @@ slack:
     - when: on_success
   script:
     - bundle exec rake zammad:db:unseeded
-    - echo "gem 'slack-ruby-client'" >> Gemfile.local
-    - bundle install -j $(nproc)
     - bundle exec rails test test/integration/slack_test.rb

Gemfile

@@ -45,7 +45,7 @@ gem 'pundit'
 gem 'rszr', '0.5.2'
 
 # performance - Memcached
-gem 'dalli'
+gem 'dalli', require: false
 
 # asset handling - coffee-script
 gem 'coffee-rails'
@@ -95,7 +95,6 @@ gem 'omniauth-weibo-oauth2'
 gem 'gmail_xoauth'
 gem 'koala'
 gem 'telegramAPI'
-# Updating twitter to 'master' seems to break things, so freeze the revision for now.
 gem 'twitter'
 
 # channels - email additions
@@ -112,7 +111,7 @@ gem 'biz'
 gem 'diffy'
 
 # feature - excel output
-gem 'writeexcel'
+gem 'writeexcel', require: false
 
 # feature - device logging
 gem 'browser'
@@ -125,21 +124,20 @@ gem 'icalendar-recurrence'
 gem 'telephone_number'
 
 # feature - SMS
-gem 'twilio-ruby'
+gem 'twilio-ruby', require: false
 
 # feature - ordering
 gem 'acts_as_list'
 
 # integrations
-gem 'clearbit'
+gem 'clearbit', require: false
 gem 'net-ldap'
-gem 'slack-notifier'
-gem 'zendesk_api'
+gem 'slack-notifier', require: false
+gem 'zendesk_api', require: false
 
 # integrations - exchange
-gem 'autodiscover', git: 'https://github.com/zammad-deps/autodiscover'
-gem 'rubyntlm', git: 'https://github.com/wimm/rubyntlm'
-gem 'viewpoint'
+gem 'autodiscover', git: 'https://github.com/zammad-deps/autodiscover', require: false
+gem 'viewpoint', require: false
 
 # integrations - S/MIME
 gem 'openssl'
@@ -218,6 +216,9 @@ group :development, :test do
 
   # refresh ENVs in CI environment
   gem 'dotenv', require: false
+
+  # Slack helper for testing
+  gem 'slack-ruby-client', require: false
 end
 
 # Want to extend Zammad with additional gems?

Gemfile.lock

@@ -1,9 +1,3 @@
-GIT
-  remote: https://github.com/wimm/rubyntlm
-  revision: 53969639b87b9e5d5fef560f19cf0d977259591c
-  specs:
-    rubyntlm (0.1.2)
-
 GIT
   remote: https://github.com/zammad-deps/autodiscover
   revision: ee9b53dfa797ce6d4f970b82beea7fbdd2df56bb
@@ -228,6 +222,8 @@ GEM
       faraday (>= 0.8)
     faraday-net_http (1.0.1)
     faraday-net_http_persistent (1.1.0)
+    faraday_middleware (1.0.0)
+      faraday (~> 1.0)
     ffi (1.15.3)
     ffi-compiler (1.0.1)
       ffi (>= 1.0.0)
@@ -243,6 +239,7 @@ GEM
       octokit (~> 4.6)
       rainbow (>= 2.2.1)
       rake (>= 10.0)
+    gli (2.20.1)
     globalid (0.4.2)
       activesupport (>= 4.2.0)
     gmail_xoauth (0.4.2)
@@ -525,6 +522,7 @@ GEM
       nokogiri (>= 1.10.5)
       rexml
     ruby2_keywords (0.0.4)
+    rubyntlm (0.6.3)
     rubyzip (2.3.0)
     sassc (2.4.0)
       ffi (~> 1.9)
@@ -553,6 +551,12 @@ GEM
       simplecov (>= 0.4.1)
     simplecov_json_formatter (0.1.3)
     slack-notifier (2.4.0)
+    slack-ruby-client (0.17.0)
+      faraday (>= 1.0)
+      faraday_middleware
+      gli
+      hashie
+      websocket-driver
     slop (3.6.0)
     spring (2.1.1)
     spring-commands-rspec (1.0.4)
@@ -721,13 +725,13 @@ DEPENDENCIES
   rubocop-performance
   rubocop-rails
   rubocop-rspec
-  rubyntlm!
   sassc-rails
   selenium-webdriver
   shoulda-matchers
   simplecov
   simplecov-rcov
   slack-notifier
+  slack-ruby-client
   spring
   spring-commands-rspec
   spring-commands-testunit

app/controllers/integration/exchange_controller.rb

@@ -7,6 +7,7 @@ class Integration::ExchangeController < ApplicationController
 
   def autodiscover
     answer_with do
+      require 'autodiscover' # Only load this gem when it is really used.
       client = Autodiscover::Client.new(
         email:    params[:user],
         password: params[:password],

app/models/channel/driver/sms/twilio.rb

@@ -142,6 +142,7 @@ class Channel::Driver::Sms::Twilio
   private
 
   def api(options)
+    require 'twilio-ruby'  # Only load this gem when it is really used.
     @api ||= ::Twilio::REST::Client.new options[:account_id], options[:token]
   end
 end

app/models/transaction/slack.rb

@@ -168,6 +168,7 @@ class Transaction::Slack
 
       Rails.logger.debug { "sent webhook (#{@item[:type]}/#{ticket.id}/#{local_config['webhook']})" }
 
+      require 'slack-notifier' # Only load this gem when it is really used.
       notifier = Slack::Notifier.new(
         local_config['webhook'],
         channel:     local_config['channel'],

config/application.rb

@@ -47,10 +47,11 @@ module Zammad
     config.api_path = '/api/v1'
 
     # define cache store
-    config.cache_store = if ENV['MEMCACHE_SERVERS'].present?
-                           [:mem_cache_store, ENV['MEMCACHE_SERVERS'], { expires_in: 7.days }]
+    if ENV['MEMCACHE_SERVERS'].present?
+      require 'dalli' # Only load this gem when it is really used.
+      config.cache_store = [:mem_cache_store, ENV['MEMCACHE_SERVERS'], { expires_in: 7.days }]
     else
-                           [:zammad_file_store, Rails.root.join('tmp', "cache_file_store_#{Rails.env}"), { expires_in: 7.days }]
+      config.cache_store = [:zammad_file_store, Rails.root.join('tmp', "cache_file_store_#{Rails.env}"), { expires_in: 7.days }]
     end
 
     # define websocket session store

lib/enrichment/clearbit/user.rb

@@ -148,6 +148,7 @@ module Enrichment
         }
 
         begin
+          require 'clearbit' # Only load this gem when it is really used.
           ::Clearbit.key = @config['api_key']
           result = ::Clearbit::Enrichment.find(email: @local_user.email, stream: true)
           record[:response] = { code: 200, content: result.to_s }

lib/excel_sheet.rb

@@ -3,6 +3,9 @@
 class ExcelSheet
 
   def initialize(title:, header:, records:, locale:, timezone: nil)
+
+    require 'writeexcel' # Only load this gem when it is really used.
+
     @title           = title
     @header          = header
     @records         = records

lib/sequencer/unit/exchange/connection.rb

@@ -11,6 +11,7 @@ class Sequencer
         private
 
         def ews_connection
+          require 'viewpoint' # Only load this gem when it is really used.
           Viewpoint::EWSClient.new(
             config[:endpoint],
             config[:user],

lib/sequencer/unit/import/zendesk/mixin/incremental_export.rb

@@ -15,6 +15,7 @@ class Sequencer
             end
 
             def resource_collection
+              require 'zendesk_api' # Only load this gem when it is really used.
               @resource_collection ||= "::ZendeskAPI::#{resource_klass}".constantize.incremental_export(client, 1)
             end
 

lib/sequencer/unit/import/zendesk/objects_total_count.rb

@@ -27,6 +27,7 @@ class Sequencer
           # that it returns max. 1000. That's why we need to update the total
           # number while importing in the resource loop
           def request(object)
+            require 'zendesk_api' # Only load this gem when it is really used.
             resource_class = "::ZendeskAPI::#{object.to_s.singularize}".safe_constantize
             if resource_class.respond_to?(:incremental_export)
               # read as: ::ZendeskAPI::Ticket.incremental_export(client, 1)

lib/sequencer/unit/zendesk/client.rb

@@ -10,6 +10,7 @@ class Sequencer
         private
 
         def client
+          require 'zendesk_api' # Only load this gem when it is really used.
           ZendeskAPI::Client.new do |config|
             config.url = Setting.get('import_zendesk_endpoint')
 

spec/controllers/integration/exchange_spec.rb

@@ -1,6 +1,7 @@
 # Copyright (C) 2012-2021 Zammad Foundation, http://zammad-foundation.org/
 
 require 'rails_helper'
+require 'autodiscover' # Only load this gem when it is really used.
 
 RSpec.describe 'Exchange integration endpoint', type: :request do
   before { authenticated_as(admin_with_admin_user_permissions) }

spec/lib/import/exchange/folder_spec.rb

@@ -1,6 +1,7 @@
 # Copyright (C) 2012-2021 Zammad Foundation, http://zammad-foundation.org/
 
 require 'rails_helper'
+require 'viewpoint' # Only load this gem when it is really used.
 
 RSpec.describe Import::Exchange::Folder do
   # see https://github.com/zammad/zammad/issues/2152

spec/lib/sequencer/unit/import/zendesk/sub_sequence/base_examples.rb

@@ -1,5 +1,7 @@
 # Copyright (C) 2012-2021 Zammad Foundation, http://zammad-foundation.org/
 
+require 'zendesk_api' # Only load this gem when it is really used.
+
 RSpec.shared_examples 'Sequencer::Unit::Import::Zendesk::SubSequence::Base' do
   describe 'error handling' do
     before do

spec/requests/integration/exchange_spec.rb

@@ -1,6 +1,7 @@
 # Copyright (C) 2012-2021 Zammad Foundation, http://zammad-foundation.org/
 
 require 'rails_helper'
+require 'autodiscover' # Only load this gem when it is really used.
 
 RSpec.describe 'Exchange integration endpoint', type: :request do
   before { authenticated_as(admin_with_admin_user_permissions) }

test/integration/slack_test.rb

@@ -1,7 +1,7 @@
 # Copyright (C) 2012-2021 Zammad Foundation, http://zammad-foundation.org/
 
 require 'integration_test_helper'
-require 'slack'
+require 'slack-ruby-client' # Only load this gem when it is really used.
 
 class SlackTest < ActiveSupport::TestCase