提交服务端基础框架

Server/vendor/alibabacloud/credentials/src/Providers/Provider.php

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+<?php
+
+namespace AlibabaCloud\Credentials\Providers;
+
+use AlibabaCloud\Credentials\CredentialsInterface;
+use AlibabaCloud\Credentials\EcsRamRoleCredential;
+use AlibabaCloud\Credentials\RamRoleArnCredential;
+use AlibabaCloud\Credentials\RsaKeyPairCredential;
+
+abstract class Provider
+{
+    /**
+     * For TSC Duration Seconds
+     */
+    const DURATION_SECONDS = 3600;
+
+    /**
+     * @var array
+     */
+    protected static $credentialsCache = [];
+
+    /**
+     * Expiration time slot for temporary security credentials.
+     *
+     * @var int
+     */
+    protected $expirationSlot = 180;
+
+    /**
+     * @var RamRoleArnCredential|RsaKeyPairCredential|EcsRamRoleCredential
+     */
+    protected $credential;
+
+    /**
+     * @var string
+     */
+    protected $error = 'Result contains no credentials';
+
+    /**
+     * @var array
+     */
+    protected $config = [];
+
+    /**
+     * CredentialTrait constructor.
+     *
+     * @param CredentialsInterface $credential
+     * @param array                $config
+     */
+    public function __construct(CredentialsInterface $credential, $config = [])
+    {
+        $this->credential = $credential;
+        $this->config     = $config;
+    }
+
+    /**
+     * Get the credentials from the cache in the validity period.
+     *
+     * @return array|null
+     */
+    public function getCredentialsInCache()
+    {
+        if (isset(self::$credentialsCache[(string)$this->credential])) {
+            $result = self::$credentialsCache[(string)$this->credential];
+            if (\strtotime($result['Expiration']) - \time() >= $this->expirationSlot) {
+                return $result;
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * Cache credentials.
+     *
+     * @param array $credential
+     */
+    protected function cache(array $credential)
+    {
+        self::$credentialsCache[(string)$this->credential] = $credential;
+    }
+}