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<?php |
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namespace PortlandLabs\Slackbot\Slack; |
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use PortlandLabs\Slackbot\Slack\Api\Payload\RtmConnectPayloadResponse; |
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use PortlandLabs\Slackbot\Slack\Rtm\WebsocketNegotiator; |
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use Psr\Log\LoggerInterface; |
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use React\EventLoop\LoopInterface; |
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class ConnectionManager |
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{ |
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/** @var Api\Client */ |
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protected $apiClient; |
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/** @var Rtm\Client */ |
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protected $rtmClient; |
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/** @var WebsocketNegotiator */ |
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protected $negotiator; |
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/** |
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* @var LoggerInterface |
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*/ |
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private $logger; |
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public function __construct(Api\Client $apiClient, Rtm\Client $rtmClient, WebsocketNegotiator $negotiator, LoggerInterface $logger) |
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{ |
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$this->apiClient = $apiClient; |
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$this->rtmClient = $rtmClient; |
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$this->negotiator = $negotiator; |
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$this->logger = $logger; |
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} |
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/** |
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* Connect to slack |
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* |
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* @return \React\Promise\Promise |
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* @throws \GuzzleHttp\Exception\GuzzleException |
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*/ |
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public function connect(LoopInterface $loop, array $middleware) |
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{ |
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$this->connecting = true; |
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$payload = $this->negotiator->resolveUrl($this->apiClient, 10); |
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if (!$payload) { |
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$this->logger->critical('[CON.ERR] Failed to negotiate websocket URL.'); |
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throw new \RuntimeException('Failed to negotiate websocket URL.'); |
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} |
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// Start listening |
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$promise = $this->rtmClient->listen($loop, $payload, $middleware, function(){}); |
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// Handle connecting |
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$promise->done(function($result) use ($loop) { |
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/** @var RtmConnectPayloadResponse $payload */ |
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[$connection, $payload] = $result; |
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$this->apiClient->setUsername($payload->getUserName()); |
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// Start sending Pings |
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$this->startPingLoop($loop); |
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}); |
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return $promise; |
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} |
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/** |
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* Start sending pings over RTM to keep us alive |
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* |
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* @param LoopInterface $loop |
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*/ |
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protected function startPingLoop(LoopInterface $loop) |
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{ |
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// Track how many times pings fail |
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$fails = 0; |
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$loop->addPeriodicTimer(10, function () use (&$fails) { |
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$this->rtmClient->sendPing()->otherwise(function () use (&$fails) { |
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$fails++; |
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if ($fails > 3) { |
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$this->handleInterrupt(); |
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$fails = 0; |
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} |
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}); |
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}); |
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} |
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/** |
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* Handle the RTM session getting interrupted |
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*/ |
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protected function handleInterrupt() |
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{ |
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$this->logger->critical('-- Disconnected from RTM, Ping timeout --'); |
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exit; |
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} |
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/** |
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* @return Api\Client |
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*/ |
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public function getApiClient(): Api\Client |
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{ |
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return $this->apiClient; |
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} |
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/** |
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* @return Rtm\Client |
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*/ |
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public function getRtmClient(): Rtm\Client |
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{ |
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return $this->rtmClient; |
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} |
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113
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} |
PortlandLabs /
slackbot
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