HttpResolver.h

/*
 * Copyright (c) 2020 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 HttpResolver_H_
#define HttpResolver_H_
// --------------------------------------------------------------------------
#include <Poco/JSON/Object.h>
#include "UniSetTypes.h"
#include "DebugStream.h"
#include "UHttpRequestHandler.h"
#include "UHttpServer.h"
#include "IORFile.h"
// -------------------------------------------------------------------------
const std::string HTTP_RESOLVER_API_VERSION = "v01";
// -------------------------------------------------------------------------
namespace uniset
{
    //------------------------------------------------------------------------------------------
    class HttpResolver:
        public Poco::Net::HTTPRequestHandler
    {
        public:
            HttpResolver( const std::string& name, int argc, const char* const* argv, const std::string& prefix );
            virtual ~HttpResolver();
 
            static std::shared_ptr<HttpResolver> init_resolver( int argc, const char* const* argv, const std::string& prefix = "httpresolver-" );
 
            static void help_print();
 
            inline std::shared_ptr<DebugStream> log()
            {
                return rlog;
            }
 
            virtual void handleRequest( Poco::Net::HTTPServerRequest& req, Poco::Net::HTTPServerResponse& resp ) override;
 
            void run();
 
        protected:
 
            Poco::JSON::Object::Ptr respError( Poco::Net::HTTPServerResponse& resp, Poco::Net::HTTPResponse::HTTPStatus s, const std::string& message );
            Poco::JSON::Object::Ptr httpGetRequest( const std::string& cmd, const Poco::URI::QueryParameters& p );
            Poco::JSON::Object::Ptr httpJsonResolve( const std::string& query, const Poco::URI::QueryParameters& p );
            std::string httpTextResolve( const std::string& query, const Poco::URI::QueryParameters& p );
 
            std::shared_ptr<Poco::Net::HTTPServer> httpserv;
            std::string httpHost = { "" };
            int httpPort = { 8008 };
            std::string httpCORS_allow = { "*" };
            std::string httpReplyAddr = { "" };
 
            std::shared_ptr<DebugStream> rlog;
            std::string myname;
 
            std::shared_ptr<IORFile> iorfile;
 
            class HttpResolverRequestHandlerFactory:
                public Poco::Net::HTTPRequestHandlerFactory
            {
                public:
                    HttpResolverRequestHandlerFactory( HttpResolver* r ): resolver(r) {}
                    virtual ~HttpResolverRequestHandlerFactory() {}
 
                    virtual Poco::Net::HTTPRequestHandler* createRequestHandler( const Poco::Net::HTTPServerRequest& req ) override;
 
                private:
                    HttpResolver* resolver;
            };
 
        private:
    };
    // ----------------------------------------------------------------------------------
} // end of namespace uniset
//------------------------------------------------------------------------------------------
#endif