https://github.com/cspray/amp-delivery-service

An implementation of DeliveryService using Amp's event reactor
https://github.com/cspray/amp-delivery-service

Last synced: about 1 month ago
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An implementation of DeliveryService using Amp's event reactor

• Host: GitHub
• URL: https://github.com/cspray/amp-delivery-service
• Owner: cspray
• License: mit
• Created: 2015-09-07T03:13:12.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2015-09-24T01:00:31.000Z (about 9 years ago)
• Last Synced: 2023-03-16T10:20:27.167Z (almost 2 years ago)
• Language: PHP
• Size: 184 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# DeliveryService

An implementation of [DeliveryService](https://github.com/cspray/delivery-service) using the [Amp]() event loop reactor. 

It is expected before uing this library you understand how these 2 dependencies operate.

## DeliveryService Hello World

Here we take a look at the official Hello World example for DeliveryService implementations. This is 

the bare minimum 

```

send($message);

$messagePromise->delivered(function() {

    echo "after listeners\n";

});

$receiver->listen('foobar', function(DeliveryService\Message $message) {

    echo "{$message->getType()}\n";

    echo "{$message->getPayload()}\n";

});

$mediator->startSendingMessages();

$reactor->tick();

$reactor->tick();

//--EXPECT--

foobar

the payload

after listeners

```

## Two-tick delivery

The 2 ticks in the above example is not a mistake. We intentionally invoke message listeners

the tick *after* it gets removed from the queue. This is done so that listeners run within 

the event loop and are invoked concurrently.

```

--------|------------------|------------------|---------------|---

 dequeue message     invoke listeners   invoke listeners      .

 queue listeners     dequeue message    dequeue message       .

                     queue listeners    queue listeners       .

```