104 lines
2.7 KiB
PHP
104 lines
2.7 KiB
PHP
<?php
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namespace NoccyLabs\Ipc\Interop\Bus;
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use NoccyLabs\Ipc\Interop\Channel\ChannelInterface;
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use NoccyLabs\Ipc\Interop\Channel\MultiStreamChannel;
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use NoccyLabs\Ipc\Interop\Async\Timer;
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use NoccyLabs\Ipc\Interop\Async\Promise;
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class Client
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{
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/** @var ChannelInterface $channel */
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protected $channel;
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protected $listeners = [];
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protected $promises = [];
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protected $exports = [];
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/**
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* Constructor
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*/
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public function __construct(ChannelInterface $channel)
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{
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$this->channel = $channel;
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$this->timer = new Timer([ $this, "update" ]);
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}
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public function update()
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{
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while ($msg = $this->channel->receive()) {
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if (!array_key_exists('op', $msg)) {
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fprintf(STDERR, "Warning: Frame missing op -- %s\n", json_encode($msg));
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continue;
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}
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switch ($msg['op']) {
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case 'retn':
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$id = $msg['id'];
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if (!array_key_exists($id, $this->promises)) {
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continue;
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}
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$promise = $this->promises[$id];
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$promise->invoke($msg['ret']);
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unset($this->promises[$id]);
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continue;
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case 'call':
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$id = $msg['id'];
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$obj = $msg['obj'];
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if (!array_key_exists($obj, $this->exports)) {
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continue;
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}
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$ret = call_user_func($this->exports[$obj], ...$msg['arg']);
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$frame = [
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'op' => 'retn',
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'id' => $id,
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'ret' => $ret
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];
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$this->channel->send($frame);
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continue;
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case 'msg':
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default:
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foreach ($this->listeners as $listener) {
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call_user_func($listener, $msg);
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}
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}
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}
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}
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public function addListener(callable $handler)
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{
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$this->listeners[] = $handler;
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}
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public function export($path, callable $function)
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{
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$this->exports[$path] = $function;
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}
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public function send($data)
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{
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$frame = [
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'op' => 'msg',
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'msg' => $data
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];
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$this->channel->send($frame);
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}
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public function call($path, ...$args)
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{
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$promise = new Promise();
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$rid = uniqid(md5($path),true);
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$frame = [
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'op' => 'call',
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'id' => $rid,
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'obj' => $path,
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'arg' => $args,
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];
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$this->promises[$rid] = $promise;
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$this->channel->send($frame);
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return $promise;
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}
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} |