core_management_api.h

#ifndef _CORE_MANAGEMENT_API_H
#define _CORE_MANAGEMENT_API_H
/*
 * Fledge core microservice management API.
 *
 * Copyright (c) 2018 Dianomic Systems
 *
 * Released under the Apache 2.0 Licence
 *
 * Author: Mark Riddoch, Massimiliano Pinto
 */
#include <management_api.h>
#include <configuration_manager.h>


#define REGISTER_SERVICE        "/fledge/service"
#define UNREGISTER_SERVICE      "/fledge/service/([0-9A-F][0-9A-F\\-]*)"
#define GET_ALL_CATEGORIES      "/fledge/service/category"
#define CREATE_CATEGORY         GET_ALL_CATEGORIES
#define GET_CATEGORY            "/fledge/service/category/([A-Za-z][a-zA-Z_0-9]*)"
#define GET_CATEGORY_ITEM       "/fledge/service/category/([A-Za-z][a-zA-Z_0-9]*)/([A-Za-z][a-zA-Z_0-9]*)"
#define DELETE_CATEGORY_ITEM_VALUE  "/fledge/service/category/([A-Za-z][a-zA-Z_0-9]*)/([A-Za-z][a-zA-Z_0-9]*)/(value)"
#define SET_CATEGORY_ITEM_VALUE     GET_CATEGORY_ITEM
#define DELETE_CATEGORY         GET_CATEGORY
#define DELETE_CHILD_CATEGORY       "/fledge/service/category/([A-Za-z][a-zA-Z_0-9]*)/(children)/([A-Za-z][a-zA-Z_0-9]*)"
#define ADD_CHILD_CATEGORIES        "/fledge/service/category/([A-Za-z][a-zA-Z_0-9]*)/(children)"
#define REGISTER_CATEGORY_INTEREST  "/fledge/interest"  // TODO implment this, right now it's a fake.
#define GET_SERVICE         REGISTER_SERVICE

#define UUID_COMPONENT          1
#define CATEGORY_NAME_COMPONENT     1
#define CATEGORY_ITEM_COMPONENT     2
#define ITEM_VALUE_NAME         3
#define CHILD_CATEGORY_COMPONENT    3

using HttpServer = SimpleWeb::Server<SimpleWeb::HTTP>;

class CoreManagementApi : public ManagementApi {
    public:
        CoreManagementApi(const std::string& name, const unsigned short port);
        ~CoreManagementApi() {};
        static CoreManagementApi *getInstance();
        void            registerMicroService(std::shared_ptr<HttpServer::Response> response,
                                 std::shared_ptr<HttpServer::Request> request);
        void            unRegisterMicroService(std::shared_ptr<HttpServer::Response> response,
                                   std::shared_ptr<HttpServer::Request> request);
        // GET /fledge/service/category
        void            getAllCategories(std::shared_ptr<HttpServer::Response> response,
                             std::shared_ptr<HttpServer::Request> request);
        // GET /fledge/service/category/{categoryName}
        void            getCategory(std::shared_ptr<HttpServer::Response> response,
                            std::shared_ptr<HttpServer::Request> request);
        // GET /fledge/service/category/{categoryName}/{configItem}
        // GET /fledge/service/category/{categoryName}/children
        void            getCategoryItem(std::shared_ptr<HttpServer::Response> response,
                            std::shared_ptr<HttpServer::Request> request);
        // DELETE /fledge/service/category/{categoryName}/{configItem}/value
        void            deleteCategoryItemValue(std::shared_ptr<HttpServer::Response> response,
                                std::shared_ptr<HttpServer::Request> request);
        //  PUT /fledge/service/category/{categoryName}/{configItemn}
        void            setCategoryItemValue(std::shared_ptr<HttpServer::Response> response,
                                 std::shared_ptr<HttpServer::Request> request);
                // Called by DELETE /fledge/service/category/{categoryName}
        void            deleteCategory(std::shared_ptr<HttpServer::Response> response,
                               std::shared_ptr<HttpServer::Request> request);
        // Called by DELETE /fledge/service/category/{CategoryName}/children/{ChildCategory}
        void            deleteChildCategory(std::shared_ptr<HttpServer::Response> response,
                                std::shared_ptr<HttpServer::Request> request);
        // Called by POST /fledge/service/category
        void            createCategory(std::shared_ptr<HttpServer::Response> response,
                               std::shared_ptr<HttpServer::Request> request);
        // Called by POST /fledge/service/category/{categoryName}/children
        void            addChildCategory(std::shared_ptr<HttpServer::Response> response,
                             std::shared_ptr<HttpServer::Request> request);
        // Default handler for unsupported URLs
        void            defaultResource(std::shared_ptr<HttpServer::Response> response,
                            std::shared_ptr<HttpServer::Request> request);

    private:
        void            errorResponse(std::shared_ptr<HttpServer::Response> response,
                              SimpleWeb::StatusCode statusCode,
                              const std::string& entryPoint,
                              const std::string& msg);
        void            internalError(std::shared_ptr<HttpServer::Response>,
                              const std::exception&);
        void            respond(std::shared_ptr<HttpServer::Response> response,
                        SimpleWeb::StatusCode statusCode,
                        const std::string& payload);
        void            respond(std::shared_ptr<HttpServer::Response> response,
                        const std::string& payload);
        bool            getConfigurationManager(const std::string& address,
                                const unsigned short port);
        void            setConfigurationEntryPoints();

    private:
        static CoreManagementApi*   m_instance;
        ConfigurationManager*       m_config;
};
#endif