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Adds logic
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120
.rubocop.yml
120
.rubocop.yml
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require: rubocop-rails
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AllCops:
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TargetRubyVersion: 2.6
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Style/StringLiterals:
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NewCops: enable
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Layout/SpaceBeforeBrackets: # (new in 1.7)
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Style/StringLiteralsInInterpolation:
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Layout/LineLength:
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Max: 350
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Lint/AmbiguousAssignment: # (new in 1.7)
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Enabled: true
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EnforcedStyle: double_quotes
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Layout/LineLength:
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Max: 120
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Lint/DeprecatedConstants: # (new in 1.8)
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Lint/DuplicateBranch: # (new in 1.3)
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Enabled: true
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Lint/DuplicateRegexpCharacterClassElement: # (new in 1.1)
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Lint/EmptyBlock: # (new in 1.1)
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Lint/LambdaWithoutLiteralBlock: # (new in 1.8)
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Lint/NoReturnInBeginEndBlocks: # (new in 1.2)
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Lint/NumberedParameterAssignment: # (new in 1.9)
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Lint/OrAssignmentToConstant: # (new in 1.9)
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Style/HashExcept: # (new in 1.7)
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Style/RedundantArgument: # (new in 1.4)
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Enabled: true
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Style/SwapValues: # (new in 1.1)
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Enabled: true
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Rails/ActiveRecordCallbacksOrder: # (new in 2.7)
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Enabled: true
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Rails/AfterCommitOverride: # (new in 2.8)
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Enabled: true
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Rails/AttributeDefaultBlockValue: # (new in 2.9)
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Enabled: true
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Rails/FindById: # (new in 2.7)
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Rails/Inquiry: # (new in 2.7)
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Rails/MailerName: # (new in 2.7)
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Rails/PluckInWhere: # (new in 2.7)
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Rails/RenderInline: # (new in 2.7)
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Enabled: true
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Rails/UniqueValidationWithoutIndex:
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Enabled: false
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Rails/WhereEquals: # (new in 2.9)
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Rails/WhereExists: # (new in 2.7)
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Enabled: true
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Rails/WhereNot: # (new in 2.8)
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Metrics/BlockLength:
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Metrics/AbcSize:
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Enabled: false
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Metrics/MethodLength:
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Enabled: false
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Metrics/CyclomaticComplexity:
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Max: 15
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Metrics/PerceivedComplexity:
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Max: 15
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81
Gemfile.lock
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81
Gemfile.lock
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@ -0,0 +1,81 @@
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PATH
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remote: .
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specs:
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rabbit_carrots (0.1.0)
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activesupport (>= 6.0.0)
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bunny (>= 2.19.0)
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connection_pool (~> 2.3.0)
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GEM
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remote: https://rubygems.org/
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specs:
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activesupport (7.0.4)
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concurrent-ruby (~> 1.0, >= 1.0.2)
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i18n (>= 1.6, < 2)
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minitest (>= 5.1)
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tzinfo (~> 2.0)
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amq-protocol (2.3.2)
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ast (2.4.2)
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bunny (2.19.0)
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amq-protocol (~> 2.3, >= 2.3.1)
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sorted_set (~> 1, >= 1.0.2)
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concurrent-ruby (1.1.10)
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connection_pool (2.3.0)
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diff-lcs (1.5.0)
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i18n (1.12.0)
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concurrent-ruby (~> 1.0)
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json (2.6.2)
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minitest (5.16.3)
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parallel (1.22.1)
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parser (3.1.2.1)
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ast (~> 2.4.1)
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rainbow (3.1.1)
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rake (13.0.6)
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rbtree (0.4.5)
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regexp_parser (2.6.1)
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rexml (3.2.5)
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rspec (3.12.0)
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rspec-core (~> 3.12.0)
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rspec-expectations (~> 3.12.0)
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rspec-mocks (~> 3.12.0)
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rspec-core (3.12.0)
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rspec-support (~> 3.12.0)
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rspec-expectations (3.12.0)
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diff-lcs (>= 1.2.0, < 2.0)
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rspec-support (~> 3.12.0)
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rspec-mocks (3.12.0)
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diff-lcs (>= 1.2.0, < 2.0)
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rspec-support (~> 3.12.0)
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rspec-support (3.12.0)
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rubocop (1.39.0)
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json (~> 2.3)
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parallel (~> 1.10)
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parser (>= 3.1.2.1)
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rainbow (>= 2.2.2, < 4.0)
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regexp_parser (>= 1.8, < 3.0)
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rexml (>= 3.2.5, < 4.0)
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rubocop-ast (>= 1.23.0, < 2.0)
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ruby-progressbar (~> 1.7)
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unicode-display_width (>= 1.4.0, < 3.0)
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rubocop-ast (1.23.0)
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parser (>= 3.1.1.0)
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ruby-progressbar (1.11.0)
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set (1.0.3)
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sorted_set (1.0.3)
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rbtree
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set (~> 1.0)
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tzinfo (2.0.5)
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concurrent-ruby (~> 1.0)
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unicode-display_width (2.3.0)
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PLATFORMS
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x86_64-linux
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DEPENDENCIES
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rabbit_carrots!
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rake (~> 13.0)
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rspec (~> 3.0)
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rubocop (~> 1.21)
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BUNDLED WITH
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2.3.23
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@ -1,6 +1,10 @@
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# frozen_string_literal: true
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require_relative "rabbit_carrots/version"
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require 'rabbit_carrots/connection'
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require 'rabbit_carrots/configuration'
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require 'rabbit_carrots/railtie' if defined?(Rails)
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module RabbitCarrots
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class Error < StandardError; end
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14
lib/rabbit_carrots/configuration.rb
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14
lib/rabbit_carrots/configuration.rb
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module RabbitCarrots
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class << self
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attr_accessor :configuration
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end
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def self.configure
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self.configuration ||= Configuration.new
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yield(configuration)
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end
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class Configuration
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attr_accessor :rabbitmq_host, :rabbitmq_port, :rabbitmq_user, :rabbitmq_password, :rabbitmq_vhost, :routing_key_mappings, :event_bus_exchange_name
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end
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end
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25
lib/rabbit_carrots/connection.rb
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25
lib/rabbit_carrots/connection.rb
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require 'singleton'
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module RabbitCarrots
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class Connection
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include ::Singleton
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attr_reader :connection
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def initialize
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@connection = Bunny.new(
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host: Configuration.rabbitmq_host,
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port: Configuration.rabbitmq_port,
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user: Configuration.rabbitmq_user,
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password: Configuration.rabbitmq_password,
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vhost: Configuration.rabbitmq_vhost
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)
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@connection.start
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end
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def channel
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@channel ||= ConnectionPool.new do
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connection.create_channel
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end
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end
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end
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end
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13
lib/railtie.rb
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13
lib/railtie.rb
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# lib/railtie.rb
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require 'rabbit_carrots'
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module RabbitCarrots
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class Railtie < Rails::Railtie
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railtie_name :rabbit_carrots
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rake_tasks do
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path = File.expand_path(__dir__)
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Dir.glob("#{path}/tasks/**/*.rake").each { |f| load f }
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end
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end
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end
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54
lib/tasks/rmq.rake
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54
lib/tasks/rmq.rake
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require 'bunny'
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namespace :rmq do
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desc 'Listener for Queue'
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task subscriber: :environment do
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Rails.application.eager_load!
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channels = RabbitCarrots::Configuration.routing_key_mappings
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Rails.logger = Logger.new($stdout)
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# Run RMQ Subscriber for each channel
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channels.each do |channel|
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handler_class = channel[:handler]
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raise "#{handler_class.name} must respond to `handle!`" unless handler_class.respond_to?(:handle!)
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run_task(queue_name: channel[:queue], handler_class:, routing_keys: channel[:routing_keys])
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end
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# Infinite loop to keep the process running
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loop do
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sleep 1
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end
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end
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end
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def run_task(queue_name:, handler_class:, routing_keys:)
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RabbitConnection.instance.channel.with do |channel|
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exchange = channel.topic(RabbitCarrots::Configuration.event_bus_exchange_name, durable: true)
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Rails.logger.info "Listening on QUEUE: #{queue_name} for ROUTING KEYS: #{routing_keys}"
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queue = channel.queue(queue_name, durable: true)
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routing_keys.map(&:strip).each { |k| queue.bind(exchange, routing_key: k) }
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queue.subscribe(block: false, manual_ack: true, prefetch: 10) do |delivery_info, properties, payload|
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Rails.logger.info "Received from queue: #{queue_name}, Routing Keys: #{routing_keys}"
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handler_class.handle!(channel, delivery_info, properties, payload)
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channel.ack(delivery_info.delivery_tag, false)
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rescue EventHandlers::Errors::NackMessage, JSON::ParserError => _e
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Rails.logger.info "Nacked message: #{payload}"
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channel.nack(delivery_info.delivery_tag, false, false)
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rescue EventHandlers::Errors::NackAndRequeueMessage => _e
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Rails.logger.info "Nacked and Requeued message: #{payload}"
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channel.nack(delivery_info.delivery_tag, false, true)
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rescue StandardError => e
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Rails.logger.error "Error handling message: #{payload}. Error: #{e.message}"
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channel.nack(delivery_info.delivery_tag, false, true)
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end
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Rails.logger.info 'RUN TASK ENDED'
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end
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end
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@ -8,17 +8,17 @@ Gem::Specification.new do |spec|
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spec.authors = ["Brusk Awat"]
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spec.email = ["broosk.edogawa@gmail.com"]
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spec.summary = "TODO: Write a short summary, because RubyGems requires one."
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spec.description = "TODO: Write a longer description or delete this line."
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spec.homepage = "TODO: Put your gem's website or public repo URL here."
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spec.summary = "A simple RabbitMQ consumer task"
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spec.description = "A background task based on rake to consume RabbitMQ messages"
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spec.homepage = "https://github.com/ditkrg"
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spec.license = "MIT"
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spec.required_ruby_version = ">= 2.6.0"
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spec.required_ruby_version = ">= 3.1.0"
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spec.metadata["allowed_push_host"] = "TODO: Set to your gem server 'https://example.com'"
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spec.metadata["homepage_uri"] = spec.homepage
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spec.metadata["source_code_uri"] = "TODO: Put your gem's public repo URL here."
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spec.metadata["changelog_uri"] = "TODO: Put your gem's CHANGELOG.md URL here."
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spec.metadata["source_code_uri"] = "https://github.com/ditkrg/rabbit_carrots"
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spec.metadata["changelog_uri"] = "https://github.com/ditkrg/rabbit_carrots"
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# Specify which files should be added to the gem when it is released.
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# The `git ls-files -z` loads the files in the RubyGem that have been added into git.
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@ -32,7 +32,10 @@ Gem::Specification.new do |spec|
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spec.require_paths = ["lib"]
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# Uncomment to register a new dependency of your gem
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# spec.add_dependency "example-gem", "~> 1.0"
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spec.add_dependency "bunny", ">= 2.19.0"
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spec.add_dependency "connection_pool", "~> 2.3.0"
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spec.add_dependency "activesupport", ">= 6.0.0"
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# For more information and examples about making a new gem, check out our
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# guide at: https://bundler.io/guides/creating_gem.html
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