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<?php |
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namespace ButterAMQP\Heartbeat; |
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use ButterAMQP\HeartbeatInterface; |
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class TimeHeartbeat implements HeartbeatInterface |
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{ |
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/** |
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* @var int |
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*/ |
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private $heartbeatDelay; |
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/** |
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* @var int |
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*/ |
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private $lastServerBeat; |
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/** |
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* @var int |
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*/ |
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private $lastClientBeat; |
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/** |
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* @var float |
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*/ |
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private $serverBeatFactor = 1.5; |
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/** |
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* @var float |
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*/ |
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private $clientBeatFactor = 0.75; |
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/** |
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* @param int $heartbeatDelay |
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*/ |
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public function __construct($heartbeatDelay) |
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{ |
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$this->heartbeatDelay = $heartbeatDelay; |
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} |
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/** |
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* Heartbeat factor for server beats. This is multiplier for heartbeat delay when waiting for server heartbeat. |
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* |
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* Possible values: |
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* - Value of 1 means server connection will be considered dead if heartbeat didn't arrive in exact time of heartbeat. |
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* - Value less than 1 would mean heartbeat would be expected in less than heartbeat delay, which does not make |
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* much sense. |
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* - Value more than 1 would mean we allow extra delay for server heartbeats, for example factor of 2 would mean |
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* we allow server to delay heartbeat up to double of its expected time. |
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* |
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* @param float $serverBeatFactor |
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* |
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* @return $this |
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*/ |
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public function setServerBeatFactor($serverBeatFactor) |
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{ |
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$this->serverBeatFactor = $serverBeatFactor; |
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return $this; |
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} |
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/** |
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* Heartbeat factor for client beats. This is multiplier for heartbeat delay when deciding to send heartbeat. |
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* |
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* Possible values: |
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* - Value of 1 means heartbeat would be sent after exactly time of heartbeat delay. |
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* - Value less than 1 would mean heartbeat would be send more frequently than expected. It is a good idea to send |
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* heartbeats a bit more frequently. |
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* - Value more than 1 would mean heartbeat would be send less frequently than expected. This may cause server to |
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* close connection because heartbeats will be delayed. |
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* |
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* @param float $clientBeatFactor |
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* |
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* @return $this |
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*/ |
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public function setClientBeatFactor($clientBeatFactor) |
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{ |
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$this->clientBeatFactor = $clientBeatFactor; |
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return $this; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function serverBeat() |
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{ |
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$this->lastServerBeat = $this->time(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function clientBeat() |
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{ |
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$this->lastClientBeat = $this->time(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function shouldSendHeartbeat() |
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{ |
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if ($this->heartbeatDelay == 0) { |
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1 |
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return false; |
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} |
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return $this->time() - $this->lastClientBeat >= $this->heartbeatDelay * $this->clientBeatFactor; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function isServerHeartbeatMissing() |
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{ |
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if ($this->heartbeatDelay == 0) { |
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1 |
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return false; |
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} |
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return $this->time() - $this->lastServerBeat > $this->heartbeatDelay * $this->serverBeatFactor; |
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} |
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/** |
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* @return int |
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*/ |
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protected function time() |
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{ |
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return time(); |
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} |
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} |
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skolodyazhnyy /
butter-amqplib
