https://github.com/ragmaanir/besked

Small typed PubSub library for crystal.
https://github.com/ragmaanir/besked

crystal pubsub

Last synced: 13 days ago
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Small typed PubSub library for crystal.

• Host: GitHub
• URL: https://github.com/ragmaanir/besked
• Owner: Ragmaanir
• License: mit
• Created: 2015-11-01T18:45:58.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2016-11-13T05:42:37.000Z (about 8 years ago)
• Last Synced: 2024-11-14T08:34:03.644Z (2 months ago)
• Topics: crystal, pubsub
• Language: Crystal
• Homepage:
• Size: 4.88 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# besked [![Build Status](https://travis-ci.org/Ragmaanir/besked.svg?branch=master)](https://travis-ci.org/Ragmaanir/besked)

Event System for notifications similar to ActiveSupport Instrumentation.

## Installation

Add this to your application's `shard.yml`:

```yaml

dependencies:

  besked:

    github: ragmaanir/besked

```

## Usage

```crystal

require "besked"

class MyPub

  include Besked::Publisher(Int32)

end

class MySub

  include Besked::Subscriber(Int32)

  getter? received : Bool

  getter events : Array(Int32)

  def initialize

    @received = false

    @events = [] of Int32

  end

  def receive(event : Int32)

    @received = true

    @events << event

  end

end

test "local publishers and subscribers" do

  pub = MyPub.new

  sub = MySub.new

  pub.subscribe(sub)

  assert !sub.received?

  pub.publish(1337)

  assert sub.received?

  assert sub.events == [1337]

end

```