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SAAS-505: Extract Amazon_S3 class and have it inherit from a general 'cloud backend' class

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drigato 2014-12-01 21:05:46 -05:00
parent 432245b18e
commit 7c0a25be7f
7 changed files with 194 additions and 133 deletions
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74
airtime_mvc/application/cloud_storage/Amazon_S3.php Normal file
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<?php
require_once 'StorageBackend.php';
class Amazon_S3 extends StorageBackend
{
private $zendServiceAmazonS3;
public function Amazon_S3()
{
$CC_CONFIG = Config::getConfig();
$this->setBucket($CC_CONFIG['storage_backend']['bucket']);
$this->setAccessKey($CC_CONFIG['storage_backend']['api_key']);
$this->setSecretKey($CC_CONFIG['storage_backend']['api_key_secret']);
$this->zendServiceAmazonS3 = new Zend_Service_Amazon_S3(
$this->getAccessKey(),
$this->getSecretKey());
}
public function getAbsoluteFilePath($resourceId)
{
$endpoint = $this->zendServiceAmazonS3->getEndpoint();
$scheme = $endpoint->getScheme();
$host = $endpoint->getHost();
$bucket = $this->getBucket();
return "$scheme://$bucket.$host/".utf8_encode($resourceId);
}
public function getSignedURL($resourceId)
{
//URL will be active for 30 minutes
$expires = time()+1800;
$bucket = $this->getBucket();
$secretKey = $this->getSecretKey();
$accessKey = $this->getAccessKey();
$string_to_sign = utf8_encode("GET\n\n\n$expires\n/$bucket/$resourceId");
// We need to urlencode the entire signature in case the hashed signature
// has spaces. (NOTE: utf8_encode() does not work here because it turns
// spaces into non-breaking spaces)
$signature = urlencode(base64_encode((hash_hmac("sha1", $string_to_sign, $secretKey, true))));
$resourceURL = $this->getAbsoluteFilePath($resourceId);
return $resourceURL."?AWSAccessKeyId=$accessKey&Expires=$expires&Signature=$signature";
}
public function getFileSize($resourceId)
{
$bucket = $this->getBucket();
$amz_resource = utf8_encode("$bucket/$resourceId");
$amz_resource_info = $this->zendServiceAmazonS3->getInfo($amz_resource);
return $amz_resource_info["size"];
}
public function deletePhysicalFile($resourceId)
{
$bucket = $this->getBucket();
$amz_resource = utf8_encode("$bucket/$resourceId");
if ($this->zendServiceAmazonS3->isObjectAvailable($amz_resource)) {
// removeObject() returns true even if the object was not deleted (bug?)
// so that is not a good way to do error handling. isObjectAvailable()
// does however return the correct value; We have to assume that if the
// object is available the removeObject() function will work.
$this->zendServiceAmazonS3->removeObject($amz_resource);
} else {
throw new Exception("ERROR: Could not locate object on Amazon S3");
}
}
}