first commit -> move some files from one-api

vendor/aws_v3/Aws/Retry/QuotaManager.php

@@ -0,0 +1,86 @@
+<?php
+namespace Aws\Retry;
+
+use Aws\Exception\AwsException;
+use Aws\ResultInterface;
+
+/**
+ * @internal
+ */
+class QuotaManager
+{
+    private $availableCapacity;
+    private $capacityAmount;
+    private $initialRetryTokens;
+    private $maxCapacity;
+    private $noRetryIncrement;
+    private $retryCost;
+    private $timeoutRetryCost;
+
+    public function __construct($config = [])
+    {
+        $this->initialRetryTokens = isset($config['initial_retry_tokens'])
+            ? $config['initial_retry_tokens']
+            : 500;
+        $this->noRetryIncrement = isset($config['no_retry_increment'])
+            ? $config['no_retry_increment']
+            : 1;
+        $this->retryCost = isset($config['retry_cost'])
+            ? $config['retry_cost']
+            : 5;
+        $this->timeoutRetryCost = isset($config['timeout_retry_cost'])
+            ? $config['timeout_retry_cost']
+            : 10;
+        $this->maxCapacity = $this->initialRetryTokens;
+        $this->availableCapacity = $this->initialRetryTokens;
+    }
+
+    public function hasRetryQuota($result)
+    {
+        if ($result instanceof AwsException && $result->isConnectionError()) {
+            $this->capacityAmount = $this->timeoutRetryCost;
+        } else {
+            $this->capacityAmount = $this->retryCost;
+        }
+
+        if ($this->capacityAmount > $this->availableCapacity) {
+            return false;
+        }
+
+        $this->availableCapacity -= $this->capacityAmount;
+        return true;
+    }
+
+    public function releaseToQuota($result)
+    {
+        if ($result instanceof AwsException) {
+            $statusCode = (int) $result->getStatusCode();
+        } elseif ($result instanceof ResultInterface) {
+            $statusCode = isset($result['@metadata']['statusCode'])
+                ? (int) $result['@metadata']['statusCode']
+                : null;
+        }
+
+        if (!empty($statusCode) && $statusCode >= 200 && $statusCode < 300) {
+            if (isset($this->capacityAmount)) {
+                $amount = $this->capacityAmount;
+                $this->availableCapacity += $amount;
+                unset($this->capacityAmount);
+            } else {
+                $amount = $this->noRetryIncrement;
+                $this->availableCapacity += $amount;
+            }
+            $this->availableCapacity = min(
+                $this->availableCapacity,
+                $this->maxCapacity
+            );
+        }
+
+        return (isset($amount) ? $amount : 0);
+    }
+
+    public function getAvailableCapacity()
+    {
+        return $this->availableCapacity;
+    }
+}