UHttpRequestHandler.h

#ifndef DISABLE_REST_API
/*
 * Copyright (c) 2015 Pavel Vainerman.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, version 2.1.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Lesser Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
// -------------------------------------------------------------------------
#ifndef UHttpRequesrHandler_H_
#define UHttpRequesrHandler_H_
// -------------------------------------------------------------------------
#include <memory>
#include <Poco/Net/HTTPRequestHandler.h>
#include <Poco/Net/HTTPRequestHandlerFactory.h>
#include <Poco/Net/HTTPServerRequest.h>
#include <Poco/Net/HTTPServerResponse.h>
#include <Poco/URI.h>
#include <Poco/JSON/Object.h>
#include "ujson.h"
#include "DebugStream.h"
// -------------------------------------------------------------------------
// -------------------------------------------------------------------------
namespace uniset
{
    namespace UHttp
    {
        // текущая версия API
        const std::string UHTTP_API_VERSION = "v01";

        class IHttpRequest
        {
            public:
                IHttpRequest() {}
                virtual ~IHttpRequest() {}

                // throw SystemError
                virtual Poco::JSON::Object::Ptr httpGet( const Poco::URI::QueryParameters& p ) = 0;
                virtual Poco::JSON::Object::Ptr httpHelp( const Poco::URI::QueryParameters& p ) = 0;

                // не обязательная функция.
                virtual Poco::JSON::Object::Ptr httpRequest( const std::string& req, const Poco::URI::QueryParameters& p );
        };
        // -------------------------------------------------------------------------
        class IHttpRequestRegistry
        {
            public:
                IHttpRequestRegistry() {}
                virtual ~IHttpRequestRegistry() {}

                // throw SystemError, NameNotFound
                virtual Poco::JSON::Object::Ptr httpGetByName( const std::string& name, const Poco::URI::QueryParameters& p ) = 0;

                // throw SystemError
                virtual Poco::JSON::Array::Ptr httpGetObjectsList( const Poco::URI::QueryParameters& p ) = 0;
                virtual Poco::JSON::Object::Ptr httpHelpByName( const std::string& name, const Poco::URI::QueryParameters& p ) = 0;
                virtual Poco::JSON::Object::Ptr httpRequestByName( const std::string& name, const std::string& req, const Poco::URI::QueryParameters& p ) = 0;
        };

        // -------------------------------------------------------------------------
        class UHttpRequestHandler:
            public Poco::Net::HTTPRequestHandler
        {
            public:
                UHttpRequestHandler( std::shared_ptr<IHttpRequestRegistry> _registry, const std::string& httpCORS_allow = "*");

                virtual void handleRequest( Poco::Net::HTTPServerRequest& req, Poco::Net::HTTPServerResponse& resp ) override;

            private:

                std::shared_ptr<IHttpRequestRegistry> registry;
                std::shared_ptr<DebugStream> log;
                const std::string httpCORS_allow = { "*" };
        };
        // -------------------------------------------------------------------------
        class UHttpRequestHandlerFactory:
            public Poco::Net::HTTPRequestHandlerFactory
        {
            public:

                UHttpRequestHandlerFactory( std::shared_ptr<IHttpRequestRegistry>& _registry );

                virtual Poco::Net::HTTPRequestHandler* createRequestHandler( const Poco::Net::HTTPServerRequest& ) override;

                // (CORS): Access-Control-Allow-Origin. Default: *
                void setCORS_allow( const std::string& allow );
            private:
                std::shared_ptr<IHttpRequestRegistry> registry;
                std::string httpCORS_allow = { "*" };
        };
    }
    // -------------------------------------------------------------------------
} // end of uniset namespace
// -------------------------------------------------------------------------
#endif // UHttpRequesrHandler_H_
// -------------------------------------------------------------------------
#endif