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efrain |
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<?php
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namespace Aws\Retry;
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use Aws\Exception\AwsException;
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use Aws\ResultInterface;
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/**
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* @internal
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*/
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class QuotaManager
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{
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private $availableCapacity;
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private $capacityAmount;
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private $initialRetryTokens;
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private $maxCapacity;
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private $noRetryIncrement;
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private $retryCost;
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private $timeoutRetryCost;
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public function __construct($config = [])
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{
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$this->initialRetryTokens = isset($config['initial_retry_tokens'])
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? $config['initial_retry_tokens']
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: 500;
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$this->noRetryIncrement = isset($config['no_retry_increment'])
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? $config['no_retry_increment']
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: 1;
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$this->retryCost = isset($config['retry_cost'])
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? $config['retry_cost']
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: 5;
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$this->timeoutRetryCost = isset($config['timeout_retry_cost'])
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? $config['timeout_retry_cost']
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: 10;
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$this->maxCapacity = $this->initialRetryTokens;
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$this->availableCapacity = $this->initialRetryTokens;
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}
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public function hasRetryQuota($result)
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{
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if ($result instanceof AwsException && $result->isConnectionError()) {
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$this->capacityAmount = $this->timeoutRetryCost;
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} else {
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$this->capacityAmount = $this->retryCost;
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}
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if ($this->capacityAmount > $this->availableCapacity) {
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return false;
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}
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$this->availableCapacity -= $this->capacityAmount;
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return true;
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}
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public function releaseToQuota($result)
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{
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if ($result instanceof AwsException) {
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$statusCode = (int) $result->getStatusCode();
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} elseif ($result instanceof ResultInterface) {
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$statusCode = isset($result['@metadata']['statusCode'])
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? (int) $result['@metadata']['statusCode']
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: null;
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}
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if (!empty($statusCode) && $statusCode >= 200 && $statusCode < 300) {
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if (isset($this->capacityAmount)) {
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$amount = $this->capacityAmount;
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$this->availableCapacity += $amount;
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unset($this->capacityAmount);
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} else {
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$amount = $this->noRetryIncrement;
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$this->availableCapacity += $amount;
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}
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$this->availableCapacity = min(
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$this->availableCapacity,
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$this->maxCapacity
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);
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}
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return (isset($amount) ? $amount : 0);
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}
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public function getAvailableCapacity()
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{
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return $this->availableCapacity;
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}
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}
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