Viewing file:  ApiException.php (10.69 KB) -rw-r--r--
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<?php
/*
* Copyright 2016 Google LLC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
namespace Google\ApiCore;
use Exception;
use Google\Protobuf\Internal\RepeatedField;
use Google\Rpc\Status;
use GuzzleHttp\Exception\RequestException;
/**
* Represents an exception thrown during an RPC.
*/
class ApiException extends Exception
{
private $status;
private $metadata;
private $basicMessage;
private $decodedMetadataErrorInfo;
/**
* ApiException constructor.
* @param string $message
* @param int $code
* @param string $status
* @param array $optionalArgs {
* @type Exception|null $previous
* @type array|null $metadata
* @type string|null $basicMessage
* }
*/
public function __construct(
$message,
$code,
$status,
array $optionalArgs = []
) {
$optionalArgs += [
'previous' => null,
'metadata' => null,
'basicMessage' => $message,
];
parent::__construct($message, $code, $optionalArgs['previous']);
$this->status = $status;
$this->metadata = $optionalArgs['metadata'];
$this->basicMessage = $optionalArgs['basicMessage'];
if ($this->metadata) {
$this->decodedMetadataErrorInfo = self::decodeMetadataErrorInfo($this->metadata);
}
}
public function getStatus()
{
return $this->status;
}
/**
* Returns null if metadata does not contain error info, or returns containsErrorInfo() array
* if the metadata does contain error info.
* @param array $metadata
* @return array|null $details {
* @type string|null $reason
* @type string|null $domain
* @type array|null $errorInfoMetadata
* }
*/
private static function decodeMetadataErrorInfo(array $metadata)
{
$details = [];
// ApiExceptions created from RPC status have metadata that is an array of objects.
if (is_object(reset($metadata))) {
$metadataRpcStatus = Serializer::decodeAnyMessages($metadata);
$details = self::containsErrorInfo($metadataRpcStatus);
} elseif (self::containsErrorInfo($metadata)) {
$details = self::containsErrorInfo($metadata);
} else {
// For GRPC-based responses, the $metadata needs to be decoded.
$metadataGrpc = Serializer::decodeMetadata($metadata);
$details = self::containsErrorInfo($metadataGrpc);
}
return $details;
}
/**
* Returns the `reason` in ErrorInfo for an exception, or null if there is no ErrorInfo.
* @return string|null $reason
*/
public function getReason()
{
return ($this->decodedMetadataErrorInfo) ? $this->decodedMetadataErrorInfo['reason'] : null;
}
/**
* Returns the `domain` in ErrorInfo for an exception, or null if there is no ErrorInfo.
* @return string|null $domain
*/
public function getDomain()
{
return ($this->decodedMetadataErrorInfo) ? $this->decodedMetadataErrorInfo['domain'] : null;
}
/**
* Returns the `metadata` in ErrorInfo for an exception, or null if there is no ErrorInfo.
* @return array|null $errorInfoMetadata
*/
public function getErrorInfoMetadata()
{
return ($this->decodedMetadataErrorInfo) ? $this->decodedMetadataErrorInfo['errorInfoMetadata'] : null;
}
/**
* @param \stdClass $status
* @return ApiException
*/
public static function createFromStdClass($status)
{
$metadata = property_exists($status, 'metadata') ? $status->metadata : null;
return self::create(
$status->details,
$status->code,
$metadata,
Serializer::decodeMetadata($metadata)
);
}
/**
* @param string $basicMessage
* @param int $rpcCode
* @param array|null $metadata
* @param \Exception $previous
* @return ApiException
*/
public static function createFromApiResponse(
$basicMessage,
$rpcCode,
array $metadata = null,
\Exception $previous = null
) {
return self::create(
$basicMessage,
$rpcCode,
$metadata,
Serializer::decodeMetadata($metadata),
$previous
);
}
/**
* For REST-based responses, the metadata does not need to be decoded.
*
* @param string $basicMessage
* @param int $rpcCode
* @param array|null $metadata
* @param \Exception $previous
* @return ApiException
*/
public static function createFromRestApiResponse(
$basicMessage,
$rpcCode,
array $metadata = null,
\Exception $previous = null
) {
return self::create(
$basicMessage,
$rpcCode,
$metadata,
is_null($metadata) ? [] : $metadata,
$previous
);
}
/**
* Checks if decoded metadata includes errorInfo message.
* If errorInfo is set, it will always contain `reason`, `domain`, and `metadata` keys.
* @param array $decodedMetadata
* @return array {
* @type string $reason
* @type string $domain
* @type array $errorInfoMetadata
* }
*/
private static function containsErrorInfo(array $decodedMetadata)
{
if (empty($decodedMetadata)) {
return [];
}
foreach ($decodedMetadata as $value) {
$isErrorInfoArray = isset($value['reason']) && isset($value['domain']) && isset($value['metadata']);
if ($isErrorInfoArray) {
return [
'reason' => $value['reason'],
'domain' => $value['domain'],
'errorInfoMetadata' => $value['metadata'],
];
}
}
}
/**
* Construct an ApiException with a useful message, including decoded metadata.
* If the decoded metadata includes an errorInfo message, then the domain, reason,
* and metadata fields from that message are hoisted directly into the error.
*
* @param string $basicMessage
* @param int $rpcCode
* @param mixed[]|RepeatedField $metadata
* @param array $decodedMetadata
* @param \Exception|null $previous
* @return ApiException
*/
private static function create($basicMessage, $rpcCode, $metadata, array $decodedMetadata, $previous = null)
{
$containsErrorInfo = self::containsErrorInfo($decodedMetadata);
$rpcStatus = ApiStatus::statusFromRpcCode($rpcCode);
$messageData = [
'message' => $basicMessage,
'code' => $rpcCode,
'status' => $rpcStatus,
'details' => $decodedMetadata
];
if ($containsErrorInfo) {
$messageData = array_merge($containsErrorInfo, $messageData);
}
$message = json_encode($messageData, JSON_PRETTY_PRINT);
if ($metadata instanceof RepeatedField) {
$metadata = iterator_to_array($metadata);
}
return new ApiException($message, $rpcCode, $rpcStatus, [
'previous' => $previous,
'metadata' => $metadata,
'basicMessage' => $basicMessage,
]);
}
/**
* @param Status $status
* @return ApiException
*/
public static function createFromRpcStatus(Status $status)
{
return self::create(
$status->getMessage(),
$status->getCode(),
$status->getDetails(),
Serializer::decodeAnyMessages($status->getDetails())
);
}
/**
* Creates an ApiException from a GuzzleHttp RequestException.
*
* @param RequestException $ex
* @param boolean $isStream
* @return ApiException
* @throws ValidationException
*/
public static function createFromRequestException(RequestException $ex, $isStream = false)
{
$res = $ex->getResponse();
$body = (string) $res->getBody();
$decoded = json_decode($body, true);
// A streaming response body will return one error in an array. Parse
// that first (and only) error message, if provided.
if ($isStream && isset($decoded[0])) {
$decoded = $decoded[0];
}
if ($error = $decoded['error']) {
$basicMessage = $error['message'];
$code = isset($error['status'])
? ApiStatus::rpcCodeFromStatus($error['status'])
: $ex->getCode();
$metadata = isset($error['details']) ? $error['details'] : null;
return static::createFromRestApiResponse($basicMessage, $code, $metadata);
}
// Use the RPC code instead of the HTTP Status Code.
$code = ApiStatus::rpcCodeFromHttpStatusCode($res->getStatusCode());
return static::createFromApiResponse($body, $code);
}
/**
* @return null|string
*/
public function getBasicMessage()
{
return $this->basicMessage;
}
/**
* @return mixed[]
*/
public function getMetadata()
{
return $this->metadata;
}
/**
* String representation of ApiException
* @return string
*/
public function __toString()
{
return __CLASS__ . ": $this->message\n";
}
}
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