/**
* Parse the result given by the JSON RPC Server
*
* @param Collection\Request $request
* @param mixed $result
* @param mixed $info
* @return Collection\Response
*/
protected function parseResponse(Collection\Request $request, $result, $info)
{
// Rewind to collection to start from the beginning
$request->rewind();
if (empty($result) && $request->isBatch() === false && $request->current()->getId() !== null) {
throw new Exception\InvalidResponse('Client parse error', static::CLIENT_PARSE_ERROR);
}
// First go through the layer stack
$result = $this->protocolLayerStack->handleResponse($result);
$json = json_decode($result, true);
if (is_array($json) === false) {
throw new Exception\InvalidResponse('Client parse error', static::CLIENT_PARSE_ERROR);
}
// Check varaibles
$hasIdKey = array_key_exists('id', $json);
$isBatch = $request->isBatch();
// Check if we have a batch result
if ($isBatch === true && $hasIdKey === true) {
throw new Exception\InvalidResponse('Client expected batch result', static::CLIENT_EXPECTED_BATCH);
// check if we have single result
} else {
if ($isBatch === false && $hasIdKey === false) {
throw new Exception\InvalidResponse('Client expected single result', static::CLIENT_EXPECTED_SINGLE);
}
}
// No batch, so we make it one
if ($isBatch === false) {
$json = array($json);
}
// Create collection response
$responses = new Collection\Response();
// Loop through all the responses
foreach ($json as $rawResponse) {
$response = new Entity\Response();
// Fetch the items from the response array
$id = $this->getArrayItem('id', $rawResponse);
$jsonrpc = $this->getArrayItem('jsonrpc', $rawResponse);
$result = $this->getArrayItem('result', $rawResponse, null);
$error = $this->getArrayItem('error', $rawResponse, null);
// Set general data
$response->setId($id)->setJsonrpc($jsonrpc);
// Determine which item to set
if ($error === null) {
$response->setResult($result);
} else {
// hydrate error information
$errorObject = new Entity\Error();
$errorObject->setCode($this->getArrayItem('code', $error));
$errorObject->setData($this->getArrayItem('data', $error));
$errorObject->setMessage($this->getArrayItem('message', $error));
$response->setError($errorObject);
}
// When callback has been registered use this
if ($request->hasIdCallback($response->getId())) {
$request->performCallback($response);
}
// append the response to the collection
$responses->append($response);
}
// return the collection
return $responses;
}
/**
* Parse the incoming request
*
* @param Entity\Request $request
* @return Entity\Response
*/
protected function parseRequest(Entity\Request $request)
{
// Check if the method has been set
if ($request->getMethod() === null) {
throw new Exception\InvalidRequest('Invalid request', static::INVALID_REQUEST);
}
// normalize the name
$methodName = strtolower($request->getMethod());
$namespace = 'global';
if (strpos($methodName, '.') !== false) {
list($namespace, $methodName) = explode('.', $methodName, 2);
}
// Check if the namespace has been registered
if ($this->handlers->offsetExists($namespace) === false) {
throw new Exception\InvalidRequest('Method not found', static::METHOD_NOT_FOUND);
}
$methods = $this->getHandlerReflectionMaker()->reflect($this->handlers->offsetGet($namespace));
// Check if the method exists
if ($methods->offsetExists($methodName) === false) {
throw new Exception\InvalidRequest('Method not found', static::METHOD_NOT_FOUND);
}
// Runtime variables
$numericArray = true;
$firstIteration = true;
// Loop through the request params for the type of arguments
foreach ($request->getParams() as $offset => $param) {
$isNumeric = (int) $offset === $offset;
// Associative and numeric cannot be used together
if ($firstIteration === false && $isNumeric !== $numericArray) {
throw new Exception\InvalidRequest('Invalid params', static::INVALID_PARAMS);
}
// Set the isNumeric flag
$numericArray = $isNumeric;
// We are not iterating the first anymore
$firstIteration = false;
}
// List of arguments for the callable
$arguments = array();
// Get method information
$method = $methods->offsetGet($methodName);
$handler = $this->getHandler($namespace);
// Loop through method information
foreach ($method->getParameters() as $parameter) {
// decide which offset to use
if ($numericArray === true) {
$offset = $parameter->getIndex();
} else {
$offset = $parameter->getName();
}
// check if the offset exists
$offsetExists = $request->getParams()->offsetExists($offset);
// Check if the argument is required
if ($parameter->getRequired() && $offsetExists === false) {
throw new Exception\InvalidRequest('Invalid params', static::INVALID_PARAMS);
}
// Add value to the argument list
$arguments[] = $offsetExists ? $request->getParams()->offsetGet($offset) : $parameter->getDefault();
}
// Perform action on the handle object
$result = call_user_func_array(array($handler, $method->getName()), $arguments);
// NULL means no response output
if ($request->getId() === null) {
return null;
}
// Create response object
$response = new Entity\Response();
$response->setId($request->getId());
$response->setJsonrpc($request->getJsonrpc());
$response->setResult($result);
// Return the response
return $response;
}
