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<?php |
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namespace Qiniu; |
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use Qiniu\Http\Client; |
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use Qiniu\Http\Error; |
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final class Zone |
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{ |
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public $ioHost; // 七牛源站Host |
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public $upHost; |
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public $upHostBackup; |
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//array( |
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// <scheme>:<ak>:<bucket> ==> |
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// array('deadline' => 'xxx', 'upHosts' => array(), 'ioHost' => 'xxx.com') |
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//) |
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public $hostCache; |
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public $scheme = 'http'; |
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public function __construct($scheme = null) |
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{ |
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$this->hostCache = array(); |
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if ($scheme != null) { |
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$this->scheme = $scheme; |
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} |
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} |
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public function getUpHostByToken($uptoken) |
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{ |
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list($ak, $bucket) = $this->unmarshalUpToken($uptoken); |
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list($upHosts,) = $this->getUpHosts($ak, $bucket); |
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return $upHosts[0]; |
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} |
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public function getBackupUpHostByToken($uptoken) |
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{ |
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list($ak, $bucket) = $this->unmarshalUpToken($uptoken); |
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list($upHosts,) = $this->getUpHosts($ak, $bucket); |
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return $upHosts[1]; |
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} |
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public function getIoHost($ak, $bucket) |
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{ |
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list($bucketHosts,) = $this->getBucketHosts($ak, $bucket); |
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$ioHosts = $bucketHosts['ioHost']; |
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if (count($ioHosts) === 0) { |
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return ""; |
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} |
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return $ioHosts[0]; |
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} |
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public function getUpHosts($ak, $bucket) |
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{ |
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list($bucketHosts, $err) = $this->getBucketHosts($ak, $bucket); |
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if ($err !== null) { |
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return array(null, $err); |
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} |
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$upHosts = $bucketHosts['upHosts']; |
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return array($upHosts, null); |
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} |
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private function unmarshalUpToken($uptoken) |
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{ |
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$token = explode(':', $uptoken); |
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if (count($token) !== 3) { |
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throw new \Exception("Invalid Uptoken", 1); |
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} |
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$ak = $token[0]; |
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$policy = base64_urlSafeDecode($token[2]); |
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$policy = json_decode($policy, true); |
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$scope = $policy['scope']; |
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$bucket = $scope; |
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if (strpos($scope, ':')) { |
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$scopes = explode(':', $scope); |
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$bucket = $scopes[0]; |
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} |
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return array($ak, $bucket); |
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} |
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public function getBucketHosts($ak, $bucket) |
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{ |
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$key = $this->scheme . $ak . $bucket; |
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$bucketHosts = $this->getBucketHostsFromCache($key); |
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if (count($bucketHosts) > 0) { |
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return array($bucketHosts, null); |
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} |
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list($hosts, $err) = $this->bucketHosts($ak, $bucket); |
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if ($err !== null) { |
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return array(null , $err); |
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} |
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$schemeHosts = $hosts[$this->scheme]; |
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$bucketHosts = array( |
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'upHosts' => $schemeHosts['up'], |
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'ioHost' => $schemeHosts['io'], |
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'deadline' => time() + $hosts['ttl'] |
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); |
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$this->setBucketHostsToCache($key, $bucketHosts); |
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return array($bucketHosts, null); |
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} |
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private function getBucketHostsFromCache($key) |
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{ |
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$ret = array(); |
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if (count($this->hostCache) === 0) { |
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return $ret; |
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} |
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if (!array_key_exists($key, $this->hostCache)) { |
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return $ret; |
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} |
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if ($this->hostCache[$key]['deadline'] > time()) { |
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$ret = $this->hostCache[$key]; |
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} |
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return $ret; |
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} |
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private function setBucketHostsToCache($key, $val) |
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{ |
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$this->hostCache[$key] = $val; |
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return; |
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} |
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/* 请求包： |
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* GET /v1/query?ak=<ak>&&bucket=<bucket> |
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* 返回包： |
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* |
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* 200 OK { |
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* "ttl": <ttl>, // 有效时间 |
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* "http": { |
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* "up": [], |
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* "io": [], // 当bucket为global时，我们不需要iohost, io缺省 |
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* }, |
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* "https": { |
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* "up": [], |
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* "io": [], // 当bucket为global时，我们不需要iohost, io缺省 |
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* } |
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* } |
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**/ |
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private function bucketHosts($ak, $bucket) |
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{ |
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$url = Config::UC_HOST . '/v1/query' . "?ak=$ak&bucket=$bucket"; |
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$ret = Client::Get($url); |
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if (!$ret->ok()) { |
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return array(null, new Error($url, $ret)); |
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} |
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$r = ($ret->body === null) ? array() : $ret->json(); |
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return array($r, null); |
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} |
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} |
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qiniu /
php-sdk
