void parser::parse_spdy_rst_stream(boost::system::error_code &ec,
const spdy_control_frame_info& frame)
{
boost::uint32_t stream_id = 0;
boost::uint32_t status_code = 0;
// First complete the check for size and flag
// The flag for RST frame should be 0, The length should be 8
if(frame.flags != 0 || frame.length != 8 ){
return;
}
// Get the 31 bit stream id
boost::uint32_t four_bytes = algorithm::to_uint32(m_read_ptr);
stream_id = four_bytes & 0x7FFFFFFF;
m_read_ptr += 4;
// Get the status code
status_code = algorithm::to_uint32(m_read_ptr);
char const* const status_code_str = rst_stream_status(status_code);
if(status_code_str){
PION_LOG_INFO(m_logger, "SPDY Status Code is : " << status_code_str);
}else{
PION_LOG_INFO(m_logger, "SPDY RST Invalid status code : " << status_code);
}
}
void PionOneToOneScheduler::startup(void)
{
// lock mutex for thread safety
boost::mutex::scoped_lock scheduler_lock(m_mutex);
if (! m_is_running) {
PION_LOG_INFO(m_logger, "Starting thread scheduler");
m_is_running = true;
// make sure there are enough services initialized
while (m_service_pool.size() < m_num_threads) {
boost::shared_ptr<ServicePair> service_ptr(new ServicePair());
m_service_pool.push_back(service_ptr);
}
// schedule a work item for each service to make sure that it doesn't complete
for (ServicePool::iterator i = m_service_pool.begin(); i != m_service_pool.end(); ++i) {
keepRunning((*i)->first, (*i)->second);
}
// start multiple threads to handle async tasks
for (boost::uint32_t n = 0; n < m_num_threads; ++n) {
boost::shared_ptr<boost::thread> new_thread(new boost::thread( boost::bind(&PionScheduler::processServiceWork,
this, boost::ref(m_service_pool[n]->first)) ));
m_thread_pool.push_back(new_thread);
}
}
}
void server::remove_resource(const std::string& resource)
{
std::unique_lock<std::mutex> resource_lock(m_resource_mutex, std::try_to_lock);
const std::string clean_resource(strip_trailing_slash(resource));
m_resources.erase(clean_resource);
PION_LOG_INFO(m_logger, "Removed request handler for HTTP resource: " << clean_resource);
}
void HTTPServer::removeResource(const std::string& resource)
{
boost::mutex::scoped_lock resource_lock(m_resource_mutex);
const std::string clean_resource(stripTrailingSlash(resource));
m_resources.erase(clean_resource);
PION_LOG_INFO(m_logger, "Removed request handler for HTTP resource: " << clean_resource);
}
void plugin_server::set_service_option(const std::string& resource,
const std::string& name, const std::string& value)
{
const std::string clean_resource(strip_trailing_slash(resource));
m_services.run(clean_resource, boost::bind(&http::plugin_service::set_option, _1, name, value));
PION_LOG_INFO(m_logger, "Set web service option for resource ("
<< resource << "): " << name << '=' << value);
}
void server::add_resource(const std::string& resource,
request_handler_t request_handler)
{
std::unique_lock<std::mutex> resource_lock(m_resource_mutex, std::try_to_lock);
const std::string clean_resource(strip_trailing_slash(resource));
m_resources.insert(std::make_pair(clean_resource, request_handler));
PION_LOG_INFO(m_logger, "Added request handler for HTTP resource: " << clean_resource);
}
void HTTPServer::addResource(const std::string& resource,
RequestHandler request_handler)
{
boost::mutex::scoped_lock resource_lock(m_resource_mutex);
const std::string clean_resource(stripTrailingSlash(resource));
m_resources.insert(std::make_pair(clean_resource, request_handler));
PION_LOG_INFO(m_logger, "Added request handler for HTTP resource: " << clean_resource);
}
void plugin_server::load_service(const std::string& resource, const std::string& service_name)
{
const std::string clean_resource(strip_trailing_slash(resource));
http::plugin_service *service_ptr;
service_ptr = m_services.load(clean_resource, service_name);
http::server::add_resource(clean_resource, boost::ref(*service_ptr));
service_ptr->set_resource(clean_resource);
PION_LOG_INFO(m_logger, "Loaded web service plug-in for resource (" << clean_resource << "): " << service_name);
}
void plugin_server::add_service(const std::string& resource, http::plugin_service *service_ptr)
{
plugin_ptr<http::plugin_service> plugin_ptr;
const std::string clean_resource(strip_trailing_slash(resource));
service_ptr->set_resource(clean_resource);
m_services.add(clean_resource, service_ptr);
http::server::add_resource(clean_resource, boost::ref(*service_ptr));
PION_LOG_INFO(m_logger, "Loaded static web service for resource (" << clean_resource << ")");
}
void server::add_redirect(const std::string& requested_resource,
const std::string& new_resource)
{
std::unique_lock<std::mutex> resource_lock(m_resource_mutex, std::try_to_lock);
const std::string clean_requested_resource(strip_trailing_slash(requested_resource));
const std::string clean_new_resource(strip_trailing_slash(new_resource));
m_redirects.insert(std::make_pair(clean_requested_resource, clean_new_resource));
PION_LOG_INFO(m_logger, "Added redirection for HTTP resource " << clean_requested_resource << " to resource " << clean_new_resource);
}
void HTTPServer::addRedirect(const std::string& requested_resource,
const std::string& new_resource)
{
boost::mutex::scoped_lock resource_lock(m_resource_mutex);
const std::string clean_requested_resource(stripTrailingSlash(requested_resource));
const std::string clean_new_resource(stripTrailingSlash(new_resource));
m_redirects.insert(std::make_pair(clean_requested_resource, clean_new_resource));
PION_LOG_INFO(m_logger, "Added redirection for HTTP resource " << clean_requested_resource << " to resource " << clean_new_resource);
}
void PionScheduler::shutdown(void)
{
// lock mutex for thread safety
boost::mutex::scoped_lock scheduler_lock(m_mutex);
if (m_is_running) {
PION_LOG_INFO(m_logger, "Shutting down the thread scheduler");
while (m_active_users > 0) {
// first, wait for any active users to exit
PION_LOG_INFO(m_logger, "Waiting for " << m_active_users << " scheduler users to finish");
m_no_more_active_users.wait(scheduler_lock);
}
// shut everything down
m_is_running = false;
stopServices();
stopThreads();
finishServices();
finishThreads();
PION_LOG_INFO(m_logger, "The thread scheduler has shutdown");
// Make sure anyone waiting on shutdown gets notified
m_scheduler_has_stopped.notify_all();
} else {
// stop and finish everything to be certain that no events are pending
stopServices();
stopThreads();
finishServices();
finishThreads();
// Make sure anyone waiting on shutdown gets notified
// even if the scheduler did not startup successfully
m_scheduler_has_stopped.notify_all();
}
}
void parser::parse_spdy_ping_frame(boost::system::error_code &ec,
const spdy_control_frame_info& frame)
{
// First complete the check for size
// The length should be 4 always
if(frame.length != 4){
return;
}
boost::uint32_t ping_id = 0;
// Get the 32 bit ping id
ping_id = algorithm::to_uint32(m_read_ptr);
m_read_ptr += 4;
PION_LOG_INFO(m_logger, "SPDY " << "Ping ID is : " << ping_id);
}
void PionSingleServiceScheduler::startup(void)
{
// lock mutex for thread safety
boost::mutex::scoped_lock scheduler_lock(m_mutex);
if (! m_is_running) {
PION_LOG_INFO(m_logger, "Starting thread scheduler");
m_is_running = true;
// schedule a work item to make sure that the service doesn't complete
m_service.reset();
keepRunning(m_service, m_timer);
// start multiple threads to handle async tasks
for (boost::uint32_t n = 0; n < m_num_threads; ++n) {
boost::shared_ptr<boost::thread> new_thread(new boost::thread( boost::bind(&PionScheduler::processServiceWork,
this, boost::ref(m_service)) ));
m_thread_pool.push_back(new_thread);
}
}
}
void parser::parse_spdy_goaway_frame(boost::system::error_code &ec,
const spdy_control_frame_info& frame)
{
// First complete the check for size
// The length should be 4 always
if(frame.length != 4){
return;
}
boost::uint32_t last_good_stream_id = 0;
boost::uint32_t status_code = 0;
// Get the 31 bit stream id
boost::uint32_t four_bytes = algorithm::to_uint32(m_read_ptr);
last_good_stream_id = four_bytes & 0x7FFFFFFF;
m_read_ptr += 4;
// Get the status code
status_code = algorithm::to_uint32(m_read_ptr);
// Chek if there was an error
if(status_code == 1){
PION_LOG_ERROR(m_logger, "There was a Protocol Error");
set_error(ec, ERROR_PROTOCOL_ERROR);
return;
}else if (status_code == 11) {
PION_LOG_ERROR(m_logger, "There was an Internal Error");
set_error(ec, ERROR_INTERNAL_SPDY_ERROR);
return;
}
PION_LOG_INFO(m_logger, "SPDY " << "Status Code is : " << status_code);
}
void HTTPServer::handleRequest(HTTPRequestPtr& http_request,
TCPConnectionPtr& tcp_conn)
{
if (! http_request->isValid()) {
// the request is invalid or an error occured
PION_LOG_INFO(m_logger, "Received an invalid HTTP request");
m_bad_request_handler(http_request, tcp_conn);
return;
}
PION_LOG_DEBUG(m_logger, "Received a valid HTTP request");
// strip off trailing slash if the request has one
std::string resource_requested(stripTrailingSlash(http_request->getResource()));
// apply any redirection
RedirectMap::const_iterator it = m_redirects.find(resource_requested);
unsigned int num_redirects = 0;
while (it != m_redirects.end()) {
if (++num_redirects > MAX_REDIRECTS) {
PION_LOG_ERROR(m_logger, "Maximum number of redirects (HTTPServer::MAX_REDIRECTS) exceeded for requested resource: " << http_request->getOriginalResource());
m_server_error_handler(http_request, tcp_conn, "Maximum number of redirects (HTTPServer::MAX_REDIRECTS) exceeded for requested resource");
return;
}
resource_requested = it->second;
http_request->changeResource(resource_requested);
it = m_redirects.find(resource_requested);
}
// if authentication activated, check current request
if (m_auth) {
// try to verify authentication
if (! m_auth->handleRequest(http_request, tcp_conn)) {
// the HTTP 401 message has already been sent by the authentication object
PION_LOG_DEBUG(m_logger, "Authentication required for HTTP resource: "
<< resource_requested);
if (http_request->getResource() != http_request->getOriginalResource()) {
PION_LOG_DEBUG(m_logger, "Original resource requested was: " << http_request->getOriginalResource());
}
return;
}
}
// search for a handler matching the resource requested
RequestHandler request_handler;
if (findRequestHandler(resource_requested, request_handler)) {
// try to handle the request
try {
request_handler(http_request, tcp_conn);
PION_LOG_DEBUG(m_logger, "Found request handler for HTTP resource: "
<< resource_requested);
if (http_request->getResource() != http_request->getOriginalResource()) {
PION_LOG_DEBUG(m_logger, "Original resource requested was: " << http_request->getOriginalResource());
}
} catch (HTTPResponseWriter::LostConnectionException& e) {
// the connection was lost while or before sending the response
PION_LOG_WARN(m_logger, "HTTP request handler: " << e.what());
tcp_conn->setLifecycle(TCPConnection::LIFECYCLE_CLOSE); // make sure it will get closed
tcp_conn->finish();
} catch (std::bad_alloc&) {
// propagate memory errors (FATAL)
throw;
} catch (std::exception& e) {
// recover gracefully from other exceptions thrown request handlers
PION_LOG_ERROR(m_logger, "HTTP request handler: " << e.what());
m_server_error_handler(http_request, tcp_conn, e.what());
}
} else {
// no web services found that could handle the request
PION_LOG_INFO(m_logger, "No HTTP request handlers found for resource: "
<< resource_requested);
if (http_request->getResource() != http_request->getOriginalResource()) {
PION_LOG_DEBUG(m_logger, "Original resource requested was: " << http_request->getOriginalResource());
}
m_not_found_handler(http_request, tcp_conn);
}
}
