/**
* Processes an action result by dispatching the configured servlet.
*
* @param \AppserverIo\Psr\Servlet\ServletRequestInterface $servletRequest The request instance
* @param \AppserverIo\Psr\Servlet\ServletResponseInterface $servletResponse The response sent back to the client
*
* @return void
*/
public function process(ServletRequestInterface $servletRequest, ServletResponseInterface $servletResponse)
{
// load the action instance
$action = $this->getAction();
// query whether the action contains errors or not
if ($action instanceof ValidationAware && $action->hasErrors()) {
$content = $action->getErrors();
} else {
$content = $servletRequest->getAttribute(JsonResult::DATA);
}
// add the header for the JSON content type
$servletResponse->addHeader(HttpProtocol::HEADER_CONTENT_TYPE, 'application/json');
// append the JSON encoded content to the servlet response
$servletResponse->appendBodyStream(json_encode($content));
}
/**
* Processes an action result by dispatching the configured servlet.
*
* @param \AppserverIo\Psr\Servlet\ServletRequestInterface $servletRequest The request instance
* @param \AppserverIo\Psr\Servlet\ServletResponseInterface $servletResponse The response sent back to the client
*
* @return void
*/
public function process(ServletRequestInterface $servletRequest, ServletResponseInterface $servletResponse)
{
// load the action instance
$action = $this->getAction();
// add the actions default headers to the response
if ($action instanceof DefaultHeadersAware && $action->hasDefaultHeaders()) {
foreach ($action->getDefaultHeaders() as $name => $value) {
$servletResponse->addHeader($name, $value);
}
}
// query whether the action contains errors or not
if ($action instanceof ValidationAware && $action->hasErrors()) {
$bodyContent = $action->getErrors();
} else {
$bodyContent = $action->getAttribute($this->getResult());
}
// query whether the action requires content encoding or not
if ($action instanceof EncodingAware && !empty($bodyContent)) {
$bodyContent = $action->encode($bodyContent);
}
// set the encoded body content
$servletResponse->appendBodyStream($bodyContent);
}
/**
* Processes the DHTML file specified as servlet name.
*
* @param \AppserverIo\Psr\Servlet\ServletRequestInterface $servletRequest The request instance
* @param \AppserverIo\Psr\Servlet\ServletResponseInterface $servletResponse The response sent back to the client
*
* @return void
*
* @throws \AppserverIo\Psr\Servlet\ServletException If no action has been found for the requested path
*/
public function service(ServletRequestInterface $servletRequest, ServletResponseInterface $servletResponse)
{
// pre-initialize the X-POWERED-BY header
$poweredBy = $this->getPoweredBy();
// append an existing X-POWERED-BY header if available
if ($servletResponse->hasHeader(HttpProtocol::HEADER_X_POWERED_BY)) {
$poweredBy = $servletResponse->getHeader(HttpProtocol::HEADER_X_POWERED_BY) . ', ' . $poweredBy;
}
// set the X-POWERED-BY header
$servletResponse->addHeader(HttpProtocol::HEADER_X_POWERED_BY, $poweredBy);
// servlet path === relative path to the template name
$template = $servletRequest->getServletPath();
// check if the template is available
if (file_exists($pathToTemplate = $this->getWebappPath() . $template) === false) {
throw new ServletException(sprintf('Requested template \'%s\' is not available', $template));
}
// process the template
ob_start();
require $pathToTemplate;
// add the servlet name to the response
$servletResponse->appendBodyStream(ob_get_clean());
}
/**
* Delegates to HTTP method specific functions like doPost() for POST e.g.
*
* @param \AppserverIo\Psr\Servlet\ServletRequestInterface $servletRequest The request instance
* @param \AppserverIo\Psr\Servlet\ServletResponseInterface $servletResponse The response sent back to the client
*
* @return void
*
* @throws \AppserverIo\Psr\Servlet\ServletException If no action has been found for the requested path
*/
public function service(ServletRequestInterface $servletRequest, ServletResponseInterface $servletResponse)
{
try {
// pre-initialize response
$servletResponse->addHeader(HttpProtocol::HEADER_X_POWERED_BY, get_class($this));
// load the the DI provider and session manager instance
$provider = $this->getProvider($servletRequest);
$sessionId = $servletRequest->getProposedSessionId();
// load the path info from the servlet request
$pathInfo = $servletRequest->getPathInfo();
// if the requested action has been found in the path info
if ($pathInfo == null) {
$pathInfo = $this->getDefaultRoute();
}
// prepare the path of the requested action
$requestedAction = $pathInfo;
// load the routes
$routes = $this->getRoutes();
// load the action mappings for the actual servlet request
$actionMappings = $this->getActionMappingsForServletRequest($servletRequest);
// initialize the parameter map with the values from the request
if ($servletRequest->getParameterMap()) {
$parameterMap = $servletRequest->getParameterMap();
} else {
$parameterMap = array();
}
// iterate over the action mappings and try to find a mapping
foreach ($actionMappings as $actionMapping) {
// try to match actual request by the tokenizer
if ($actionMapping->match($requestedAction)) {
// initialize the request attributes with the values from the action mapping
$servletRequest->setParameterMap(array_merge($parameterMap, $actionMapping->getRequestParameters()));
// resolve the action with the found mapping
$action = $routes[$actionMapping->getControllerName()];
// set the method that has to be invoked in the action context
$action->setAttribute(ContextKeys::METHOD_NAME, $actionMapping->getMethodName());
// inject the dependencies
$provider->injectDependencies($action, $sessionId);
// pre-dispatch the action
$action->preDispatch($servletRequest, $servletResponse);
// if the action has been dispatched, we're done
if ($servletRequest->isDispatched()) {
return;
}
// initialize the result with the default value
$result = ActionInterface::INPUT;
// if not dispatch the action
if ($newResult = $action->perform($servletRequest, $servletResponse)) {
$result = $newResult;
}
// process the result if available
if (($instance = $action->findResult($result)) instanceof ResultInterface) {
// query whether or not the result is action aware
if ($instance instanceof ActionAware) {
$instance->setAction($action);
}
// process the result
$instance->process($servletRequest, $servletResponse);
}
// post-dispatch the action instance
$action->postDispatch($servletRequest, $servletResponse);
// stop processing
return;
}
}
// We did not find anything for this method/URI connection. We have to evaluate if there simply
// is a method restriction. This replicates a lot of the checks we did before but omits extra
// iterations in a positive dispatch event, 4xx's should be the exception and can handle that
// penalty therefore
if ($this->checkGeneralActionAvailability($pathInfo)) {
// nothing found? Method must not be allowed then
throw new DispatchException(sprintf('Method %s not allowed', $servletRequest->getMethod()), 405);
}
// throw an action, because we can't find an action mapping
throw new DispatchException(sprintf('Can\'t find action to dispatch path info %s', $pathInfo), 404);
} catch (DispatchException $de) {
// results in a 4xx error
throw new ServletException($de->__toString(), $de->getCode());
} catch (\Exception $e) {
// results in a 500 error page
throw new ServletException($e->__toString(), 500);
}
}
/**
* Delegation method for specific Http methods.
*
* @param \AppserverIo\Psr\Servlet\ServletRequestInterface $servletRequest The request instance
* @param \AppserverIo\Psr\Servlet\ServletResponseInterface $servletResponse The response instance
*
* @return void
* @throws \AppserverIo\Psr\Servlet\ServletException Is thrown if the request method is not available
*/
public function service(ServletRequestInterface $servletRequest, ServletResponseInterface $servletResponse)
{
// pre-initialize response
$servletResponse->addHeader(Protocol::HEADER_X_POWERED_BY, get_class($this));
// check the request method to invoke the appropriate method
switch ($servletRequest->getMethod()) {
case Protocol::METHOD_CONNECT:
$this->doConnect($servletRequest, $servletResponse);
break;
case Protocol::METHOD_DELETE:
$this->doDelete($servletRequest, $servletResponse);
break;
case Protocol::METHOD_GET:
$this->doGet($servletRequest, $servletResponse);
break;
case Protocol::METHOD_HEAD:
$this->doHead($servletRequest, $servletResponse);
break;
case Protocol::METHOD_OPTIONS:
$this->doOptions($servletRequest, $servletResponse);
break;
case Protocol::METHOD_POST:
$this->doPost($servletRequest, $servletResponse);
break;
case Protocol::METHOD_PUT:
$this->doPut($servletRequest, $servletResponse);
break;
case Protocol::METHOD_TRACE:
$this->doTrace($servletRequest, $servletResponse);
break;
case Protocol::METHOD_PATCH:
$this->doPatch($servletRequest, $servletResponse);
break;
default:
throw new ServletException(sprintf('%s is not implemented yet.', $servletRequest->getMethod()));
}
}
