0.02
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A library for publshing messages to RabbitMQ
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 Dependencies

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 Project Readme

ActivePublisher

Welcome to your new gem! In this directory, you'll find the files you need to be able to package up your Ruby library into a gem. Put your Ruby code in the file lib/active_publisher. To experiment with that code, run bin/console for an interactive prompt.

TODO: Delete this and the text above, and describe your gem

Installation

Add this line to your application's Gemfile:

gem 'active_publisher'

And then execute:

$ bundle

Or install it yourself as:

$ gem install active_publisher

Configuration

ActivePublisher will use a config/active_publisher.yml or config/action_subscriber.yml if you include the line ::ActivePublisher::Configuration.configure_from_yaml_and_cli in an initializer.

Create a config/active_publisher.yml similar to a database.yml, with your configuration nested in your environments keys.

default: &default
  host: localhost
  username: guest
  password: guest

development:
  <<: *default

test:
  <<: *default

production:
  <<: *default
  host: <%= ENV['RABBIT_MQ_HOST'] %>
  username: <%= ENV['RABBIT_MQ_USERNAME'] %>
  password: <%= ENV['RABBIT_MQ_PASSWORD'] %>

Defaults for the configuration are:

{
  :heartbeat => 5,
  :host => "localhost",
  :hosts => [],
  :max_async_publisher_lag_time => 10,
  :network_recovery_interval => 1,
  :password => "guest",
  :port => 5672,
  :publisher_threads => 1,
  :publisher_confirms => false,
  :publisher_confirms_timeout => 5_000,
  :seconds_to_wait_for_graceful_shutdown => 30,
  :timeout => 1,
  :tls => false,
  :tls_ca_certificates => [],
  :tls_cert => nil,
  :tls_key => nil,
  :username => "guest",
  :verify_peer => true,
  :virtual_host => "/"
}

Usage

Basic publishing is simple.

  # @param [String] route The routing key to use for this message.
  # @param [String] payload The message you are sending. Should already be encoded as a string.
  # @param [String] exchange The exchange you want to publish to.
  # @param [Hash] options hash to set message parameters (e.g. headers)

  ::ActivePublisher.publish("user.created", user.to_json, "events", {})

Async publishing is as simple as configuring the async publishing adapter and running publish_sync the same was as publish. You can use the ::ActivePublisher::Async::InMemoryAdapter that ships with ActivePublisher.

initializers/active_publisher.rb

require "active_publisher"
::ActivePublisher::Async.publisher_adapter = ::ActivePublisher::Async::InMemoryAdapter.new
::ActivePublisher.publish_async("user.created", user.to_json, "events", {})

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/active_publisher. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

License

The gem is available as open source under the terms of the MIT License.