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The wait group gets passed to HttpServerConnection, then down to the HttpHandlers. For those handlers that modify the program state, the wait group is locked so ApiListener will wait on Stop() for the request to complete. If the request iterates over config objects, a further check on the state of the wait group is added to abort early and not delay program shutdown. In that case, 503 responses will be sent to the client. Additionally, in HttpServerConnection, no further requests than the one already started will be allowed once the wait group is joining.
77 lines
1.7 KiB
C++
77 lines
1.7 KiB
C++
/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
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#ifndef HTTPHANDLER_H
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#define HTTPHANDLER_H
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#include "remote/i2-remote.hpp"
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#include "remote/url.hpp"
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#include "remote/httpserverconnection.hpp"
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#include "remote/apiuser.hpp"
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#include "base/registry.hpp"
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#include "base/tlsstream.hpp"
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#include <vector>
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#include <boost/asio/spawn.hpp>
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#include <boost/beast/http.hpp>
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namespace icinga
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{
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/**
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* HTTP handler.
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*
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* @ingroup remote
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*/
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class HttpHandler : public Object
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{
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public:
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DECLARE_PTR_TYPEDEFS(HttpHandler);
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virtual bool HandleRequest(
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const WaitGroup::Ptr& waitGroup,
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AsioTlsStream& stream,
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const ApiUser::Ptr& user,
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boost::beast::http::request<boost::beast::http::string_body>& request,
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const Url::Ptr& url,
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boost::beast::http::response<boost::beast::http::string_body>& response,
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const Dictionary::Ptr& params,
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boost::asio::yield_context& yc,
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HttpServerConnection& server
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) = 0;
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static void Register(const Url::Ptr& url, const HttpHandler::Ptr& handler);
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static void ProcessRequest(
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const WaitGroup::Ptr& waitGroup,
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AsioTlsStream& stream,
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const ApiUser::Ptr& user,
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boost::beast::http::request<boost::beast::http::string_body>& request,
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boost::beast::http::response<boost::beast::http::string_body>& response,
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boost::asio::yield_context& yc,
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HttpServerConnection& server
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);
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private:
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static Dictionary::Ptr m_UrlTree;
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};
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/**
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* Helper class for registering HTTP handlers.
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*
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* @ingroup remote
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*/
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class RegisterHttpHandler
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{
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public:
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RegisterHttpHandler(const String& url, const HttpHandler& function);
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};
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#define REGISTER_URLHANDLER(url, klass) \
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INITIALIZE_ONCE([]() { \
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Url::Ptr uurl = new Url(url); \
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HttpHandler::Ptr handler = new klass(); \
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HttpHandler::Register(uurl, handler); \
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})
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}
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#endif /* HTTPHANDLER_H */
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