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1 | 1 | <?php |
2 | 2 | namespace Qiniu; |
3 | 3 |
|
| 4 | +use Qiniu\Http\Client; |
| 5 | +use Qiniu\Http\Error; |
| 6 | + |
4 | 7 | final class Zone |
5 | 8 | { |
| 9 | + public $ioHost; // 七牛源站Host |
6 | 10 | public $upHost; |
7 | 11 | public $upHostBackup; |
8 | 12 |
|
9 | | - public function __construct($upHost, $upHostBackup) |
| 13 | + //array( |
| 14 | + // <scheme>:<ak>:<bucket> ==> |
| 15 | + // array('deadline' => 'xxx', 'upHosts' => array(), 'ioHost' => 'xxx.com') |
| 16 | + //) |
| 17 | + public $hostCache; |
| 18 | + public $scheme = 'http'; |
| 19 | + |
| 20 | + public function __construct($scheme = null) |
| 21 | + { |
| 22 | + $this->hostCache = array(); |
| 23 | + if ($scheme != null) { |
| 24 | + $this->scheme = $scheme; |
| 25 | + } |
| 26 | + } |
| 27 | + |
| 28 | + public function getUpHostByToken($uptoken) |
| 29 | + { |
| 30 | + list($ak, $bucket) = $this->unmarshalUpToken($uptoken); |
| 31 | + list($upHosts,) = $this->getUpHosts($ak, $bucket); |
| 32 | + return $upHosts[0]; |
| 33 | + } |
| 34 | + |
| 35 | + public function getBackupUpHostByToken($uptoken) |
| 36 | + { |
| 37 | + list($ak, $bucket) = $this->unmarshalUpToken($uptoken); |
| 38 | + list($upHosts,) = $this->getUpHosts($ak, $bucket); |
| 39 | + return $upHosts[1]; |
| 40 | + } |
| 41 | + |
| 42 | + public function getIoHost($ak, $bucket) |
| 43 | + { |
| 44 | + list($bucketHosts,) = $this->getBucketHosts($ak, $bucket); |
| 45 | + $ioHosts = $bucketHosts['ioHost']; |
| 46 | + if (count($ioHosts) === 0) { |
| 47 | + return ""; |
| 48 | + } |
| 49 | + |
| 50 | + return $ioHosts[0]; |
| 51 | + } |
| 52 | + |
| 53 | + public function getUpHosts($ak, $bucket) |
| 54 | + { |
| 55 | + list($bucketHosts, $err) = $this->getBucketHosts($ak, $bucket); |
| 56 | + if ($err !== null) { |
| 57 | + return array(null, $err); |
| 58 | + } |
| 59 | + |
| 60 | + $upHosts = $bucketHosts['upHosts']; |
| 61 | + return array($upHosts, null); |
| 62 | + } |
| 63 | + |
| 64 | + private function unmarshalUpToken($uptoken) |
| 65 | + { |
| 66 | + $token = explode(':', $uptoken); |
| 67 | + if (count($token) !== 3) { |
| 68 | + throw new \Exception("Invalid Uptoken", 1); |
| 69 | + } |
| 70 | + |
| 71 | + $ak = $token[0]; |
| 72 | + $policy = base64_urlSafeDecode($token[2]); |
| 73 | + $policy = json_decode($policy, true); |
| 74 | + |
| 75 | + $scope = $policy['scope']; |
| 76 | + $bucket = $scope; |
| 77 | + |
| 78 | + if (strpos($scope, ':')) { |
| 79 | + $scopes = explode(':', $scope); |
| 80 | + $bucket = $scopes[0]; |
| 81 | + } |
| 82 | + |
| 83 | + return array($ak, $bucket); |
| 84 | + } |
| 85 | + |
| 86 | + public function getBucketHosts($ak, $bucket) |
| 87 | + { |
| 88 | + $key = $this->scheme . $ak . $bucket; |
| 89 | + |
| 90 | + $bucketHosts = $this->getBucketHostsFromCache($key); |
| 91 | + if (count($bucketHosts) > 0) { |
| 92 | + return array($bucketHosts, null); |
| 93 | + } |
| 94 | + |
| 95 | + list($hosts, $err) = $this->bucketHosts($ak, $bucket); |
| 96 | + if ($err !== null) { |
| 97 | + return array(null , $err); |
| 98 | + } |
| 99 | + |
| 100 | + $schemeHosts = $hosts[$this->scheme]; |
| 101 | + $bucketHosts = array( |
| 102 | + 'upHosts' => $schemeHosts['up'], |
| 103 | + 'ioHost' => $schemeHosts['io'], |
| 104 | + 'deadline' => time() + $hosts['ttl'] |
| 105 | + ); |
| 106 | + |
| 107 | + $this->setBucketHostsToCache($key, $bucketHosts); |
| 108 | + return array($bucketHosts, null); |
| 109 | + } |
| 110 | + |
| 111 | + private function getBucketHostsFromCache($key) |
10 | 112 | { |
11 | | - $this->upHost = $upHost; |
12 | | - $this->upHostBackup = $upHostBackup; |
| 113 | + $ret = array(); |
| 114 | + if (count($this->hostCache) === 0) { |
| 115 | + return $ret; |
| 116 | + } |
| 117 | + |
| 118 | + if (!array_key_exists($key, $this->hostCache)) { |
| 119 | + return $ret; |
| 120 | + } |
| 121 | + |
| 122 | + if ($this->hostCache[$key]['deadline'] > time()) { |
| 123 | + $ret = $this->hostCache[$key]; |
| 124 | + } |
| 125 | + |
| 126 | + return $ret; |
13 | 127 | } |
14 | 128 |
|
15 | | - public static function zone0() |
| 129 | + private function setBucketHostsToCache($key, $val) |
16 | 130 | { |
17 | | - return new self('http://up.qiniu.com', 'http://upload.qiniu.com'); |
| 131 | + $this->hostCache[$key] = $val; |
| 132 | + return; |
18 | 133 | } |
19 | 134 |
|
20 | | - public static function zone1() |
| 135 | + /* 请求包: |
| 136 | + * GET /v1/query?ak=<ak>&&bucket=<bucket> |
| 137 | + * 返回包: |
| 138 | + * |
| 139 | + * 200 OK { |
| 140 | + * "ttl": <ttl>, // 有效时间 |
| 141 | + * "http": { |
| 142 | + * "up": [], |
| 143 | + * "io": [], // 当bucket为global时,我们不需要iohost, io缺省 |
| 144 | + * }, |
| 145 | + * "https": { |
| 146 | + * "up": [], |
| 147 | + * "io": [], // 当bucket为global时,我们不需要iohost, io缺省 |
| 148 | + * } |
| 149 | + * } |
| 150 | + **/ |
| 151 | + private function bucketHosts($ak, $bucket) |
21 | 152 | { |
22 | | - return new self('http://up-z1.qiniu.com', 'http://upload-z1.qiniu.com'); |
| 153 | + $url = Config::UC_HOST . '/v1/query' . "?ak=$ak&bucket=$bucket"; |
| 154 | + $ret = Client::Get($url); |
| 155 | + if (!$ret->ok()) { |
| 156 | + return array(null, new Error($url, $ret)); |
| 157 | + } |
| 158 | + $r = ($ret->body === null) ? array() : $ret->json(); |
| 159 | + return array($r, null); |
23 | 160 | } |
24 | 161 | } |
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