244 lines
		
	
	
		
			6.4 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			244 lines
		
	
	
		
			6.4 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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namespace W3TC;
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class Cdn_RackSpace_Api_Cdn {
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	private $_access_token;
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	private $_access_region_descriptor;
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	private $_new_access_required = null;
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	public function __construct( $config = array() ) {
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		$this->_access_token = $config['access_token'];
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		$this->_access_region_descriptor = $config['access_region_descriptor'];
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		$this->_new_access_required = $config['new_access_required'];
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	}
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	public function services() {
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		$r = $this->_wp_remote_get( '/services' );
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		if ( !isset( $r['services'] ) )
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			return array();
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		return $r['services'];
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	}
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	public function service_get( $service ) {
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		$response = $this->_wp_remote_get( '/services/' . $service );
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		// expand links to links_by_rel
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		if ( isset( $response['links'] ) ) {
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			$by_rel = array();
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			foreach ( $response['links'] as $r ) {
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				$by_rel[ $r['rel'] ] = $r;
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			}
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			$response['links_by_rel'] = $by_rel;
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		}
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		return $response;
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	}
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	public function service_create( $data ) {
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		// required static
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		$data['flavor_id'] = 'cdn';
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		return $this->_wp_remote_post( '/services', json_encode( $data ),
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			array(
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				'Accept' => 'application/json',
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				'Content-type' => 'application/json'
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			) );
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	}
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	public function service_set( $service_id, $data ) {
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		return $this->_wp_remote_patch( '/services/' . $service_id,
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			json_encode( $data ),
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			array(
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				'Accept' => 'application/json',
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				'Content-type' => 'application/json'
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			) );
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	}
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	public function purge( $service_id, $url ) {
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		return $this->_wp_remote_delete( '/services/' . $service_id . '/assets?url=' .
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			urlencode( $url ) );
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	}
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	private function _wp_remote_get( $uri ) {
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		if ( !empty( $this->_access_region_descriptor['cdn.publicURL'] ) ) {
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			$url_base = $this->_access_region_descriptor['cdn.publicURL'];
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			$result = wp_remote_get( $url_base . $uri . '?format=json', array(
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					'headers' => 'X-Auth-Token: ' . $this->_access_token
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					//'sslcertificates' => dirname( __FILE__ ) . '/Cdn_RackSpace_Api_CaCert.pem'
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				) );
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			$r = self::_decode_response_json( $result );
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			if ( !$r['auth_required'] )
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				return $r['response_json'];
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		}
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		$new_object = call_user_func( $this->_new_access_required );
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		return $new_object->_wp_remote_get( $uri );
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	}
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	private function _wp_remote_patch( $uri, $body = array(), $headers = array() ) {
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		if ( !empty( $this->_access_region_descriptor['cdn.publicURL'] ) ) {
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			$url_base = $this->_access_region_descriptor['cdn.publicURL'];
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			$headers['X-Auth-Token'] = $this->_access_token;
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			$result = wp_remote_post( $url_base . $uri, array(
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					'headers' => $headers,
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					'body' => $body,
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					//'sslcertificates' => dirname( __FILE__ ) . '/Cdn_RackSpace_Api_CaCert.pem',
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					'method' => 'PATCH'
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				) );
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			$r = self::_decode_response( $result );
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			if ( !$r['auth_required'] ) {
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				$location = explode( '/', $result['headers']['location'] );
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				return $location[ count( $location ) - 1 ];
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			}
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		}
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		$new_object = call_user_func( $this->_new_access_required );
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		return $new_object->_wp_remote_patch( $uri, $body );
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	}
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	private function _wp_remote_post( $uri, $body = array(), $headers = array() ) {
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		if ( !empty( $this->_access_region_descriptor['cdn.publicURL'] ) ) {
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			$url_base = $this->_access_region_descriptor['cdn.publicURL'];
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			$headers['X-Auth-Token'] = $this->_access_token;
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			$result = wp_remote_post( $url_base . $uri, array(
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					'headers' => $headers,
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					'body' => $body
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					//'sslcertificates' => dirname( __FILE__ ) . '/Cdn_RackSpace_Api_CaCert.pem'
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				) );
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			$r = self::_decode_response( $result );
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			if ( !$r['auth_required'] ) {
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				$location = explode( '/', $result['headers']['location'] );
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				return $location[ count( $location ) - 1 ];
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			}
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		}
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		$new_object = call_user_func( $this->_new_access_required );
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		return $new_object->_wp_remote_post( $uri, $body );
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	}
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	private function _wp_remote_delete( $uri, $headers = array() ) {
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		if ( !empty( $this->_access_region_descriptor['cdn.publicURL'] ) ) {
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			$url_base = $this->_access_region_descriptor['cdn.publicURL'];
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			$headers['X-Auth-Token'] = $this->_access_token;
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			$result = wp_remote_post( $url_base . $uri, array(
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					'headers' => $headers,
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					//'sslcertificates' => dirname( __FILE__ ) . '/Cdn_RackSpace_Api_CaCert.pem',
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					'method' => 'DELETE'
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				) );
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			$r = self::_decode_response( $result );
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			if ( !$r['auth_required'] )
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				return;
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		}
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		$new_object = call_user_func( $this->_new_access_required );
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		return $new_object->_wp_remote_delete( $uri, array() );
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	}
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	static private function _decode_response_json( $result ) {
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		if ( is_wp_error( $result ) )
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			throw new \Exception( 'Failed to reach API endpoint' );
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		if ( empty( $result['body'] ) )
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			$response_json = array();
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		else {
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			if ( $result['body'] == 'Unauthorized' )
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				return array( 
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					'response_json' => array(), 
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					'auth_required' => true 
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				);
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			$response_json = @json_decode( $result['body'], true );
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			if ( is_null( $response_json ) )
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				throw new \Exception(
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					'Failed to reach API endpoint, got unexpected response ' .
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					$result['body'] );
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		}
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		if ( $result['response']['code'] != '200' &&
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			$result['response']['code'] != '201' &&
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			$result['response']['code'] != '202' &&
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			$result['response']['code'] != '204' )
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			throw new \Exception( $result['body'] );
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		return array( 
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			'response_json' => $response_json, 
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			'auth_required' => false 
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		);
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	}
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	static private function _decode_response( $result ) {
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		if ( is_wp_error( $result ) )
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			throw new \Exception( 'Failed to reach API endpoint' );
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		if ( $result['response']['code'] != '200' &&
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			$result['response']['code'] != '201' &&
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			$result['response']['code'] != '202' &&
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			$result['response']['code'] != '204' ) {
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			if ( $result['response']['message'] == 'Unauthorized' )
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				return array( 
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					'response_json' => array(), 
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					'auth_required' => true 
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				);
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			// try to decode response
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			$response_json = @json_decode( $result['body'], true );
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			if ( is_null( $response_json ) ||
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				!isset( $response_json['message'] ) )
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				throw new \Exception(
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					'Failed to reach API endpoint, got unexpected response ' .
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					$result['response']['message'] );
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			else {
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				$errors = array();
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				if ( is_string( $response_json['message'] ) ) {
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					$errors[] = $response_json['message'];
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				} elseif ( isset( $response_json['message']['errors'] ) ) {
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					foreach ( $response_json['message']['errors'] as $error )
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						$errors[] = $error['message'];
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				}
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				throw new \Exception( implode( ';', $errors ) );
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			}
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		}
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		return array( 'auth_required' => false );
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	}
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}
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