48 lines
1.7 KiB
Markdown
48 lines
1.7 KiB
Markdown
# Command Bus for ReactPHP
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## Features
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* Can run monolithic (create a bus and use as is), or distributed (create bus and use clients), or in a hybrid setup. The CommandBus functions identical with or without clients.
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* All commands called asynchronously using promises and deferreds.
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* Push notifications from the bus to subscribers and listeners, such as progress or log/error messages.
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### Potential caveats
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* There is no security, nor encryption. This is intended to work between a daemon and a frontend, and is designed primarily considering all activity taking place on localhost. You can use ReactPHPs `SecureConnector` and `SecureServer` to encrypt the traffic, but this still allows anyone to connect and interact with the bus. If this sounds like something that should be changed, open a ticket.
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## Installing
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```shell
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$ composer require noccylabs/react-command-bus:^0.1.0
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```
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## Usage
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```php
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// The registry holds the callable commands
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$commands = new CommandRegistry();
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// Register some function to call. The name here is "hello", and it will
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// receive a Context holding the call context. Any passed data will be
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// available as properties on the Context object.
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$commands->register("hello", function (Context $context) {
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// You don't have to, but you should return a promise from your
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// commands.
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return new Promise(function (callable $resolve) use ($context) {
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Loop::addTimer(1, function () use ($context, $resolve) {
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$resolve("Hello, {$context->name}");
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});
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});
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});
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// Create the bus
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$bus = new CommandBus($commands);
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// And execute some commands!
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$bus->execute('hello', ['name'=>'Bob'])->then(
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function ($result) {
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var_dump($result);
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}
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);
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```
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