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<?php |
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namespace PortlandLabs\Slackbot\Slack\Rtm; |
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use CL\Slack\Exception\SlackException; |
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use PortlandLabs\Slackbot\Slack\Api\Payload\RtmConnectPayload; |
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use PortlandLabs\Slackbot\Slack\Api\Payload\RtmConnectPayloadResponse; |
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use PortlandLabs\Slackbot\Slack\Api\Client; |
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use Psr\Log\LoggerAwareTrait; |
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use Psr\Log\LoggerInterface; |
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class WebsocketNegotiator |
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{ |
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use LoggerAwareTrait; |
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public function __construct(LoggerInterface $logger) |
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{ |
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$this->setLogger($logger); |
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} |
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/** |
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* Get a URI for Slack's RTM Api |
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* |
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* @param Client $client |
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* @param int $retries The number of times to retry before giving up. Pass 0 for none, -1 for infinite |
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* @param int $maxWait |
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* |
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* @return RtmConnectPayloadResponse|null |
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* |
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* @throws \GuzzleHttp\Exception\GuzzleException |
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*/ |
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public function resolveUrl(Client $client, $retries = -1, $maxWait = 60): ?RtmConnectPayloadResponse |
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{ |
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$tries = 0; |
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$payload = new RtmConnectPayload(); |
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$wait = 5; |
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$result = null; |
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try { |
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retry: |
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$result = $client->send($payload); |
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} catch (SlackException $e) { |
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$this->logger->debug('Error connecting to RTM: ' . $e->getMessage()); |
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// Ignore slack errors, retries should handle this |
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} |
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// Handle retrying the connection. This prevents excessive retries or our process manager dieing on us |
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if (!$result || !$result instanceof RtmConnectPayloadResponse) { |
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if ($retries > 0 || $retries < 0) { |
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$retries--; |
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$tries++; |
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$this->logger->debug('Error connecting to RTM, waiting ' . $wait . ' seconds then retrying...'); |
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// Sleep for the intended wait time |
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sleep($wait); |
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// Double the wait time, or hit the max wait time |
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$wait = min($wait * 2, $maxWait); |
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goto retry; |
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} |
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} |
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if ($result instanceof RtmConnectPayloadResponse) { |
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return $result; |
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} |
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} |
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} |
PortlandLabs /
slackbot
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Let?s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let?s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: