Barrage

Distributed ID generator(like twitter/snowflake)

Installation

Add this line to your application's Gemfile:

gem 'barrage'

And then execute:

$ bundle

Or install it yourself as:

$ gem install barrage

Usage

Example

# 39bit: msec (17.4 years from start_at)
# 16bit: worker_id
# 9bit:  sequence
require 'barrage'

barrage = Barrage.new(
  "generators" => [
    {"name" => "msec", "length" => 39, "start_at" => 1396278000000},
    {"name" => "redis_worker_id", "length" => 16, "ttl" => 300},
    {"name" => "sequence", "length" => 9}
  ]
)
barrage.next
# => Generated 64bit ID

Generators

msec

redis_worker_id

requirement: redis 2.6+

sequence

Creating your own generator

module Barrage::Generators
  class YourOwnGenerator < Base
    self.required_options += %w(your_option_value)
    def generate
      # generated code
    end

    def your_option_value
      options["your_option_value"]
    end
  end
end

barrage = Barrage.new("generators" => [{"name"=>"your_own", "length" => 8, "your_option_value"=>"xxx"}])

Contributing

1. Fork it ( https://github.com/drecom/barrage/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request