/**
* 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;
}
