DaemonCommandHandler.h

// BESServerHandler.h
 
// This file is part of bes, A C++ back-end server implementation framework
// for the OPeNDAP Data Access Protocol.
 
// Copyright (c) 2011 OPeNDAP
// Author: James Gallagher <jgallagher@opendap.org> Based on code by Partick
// West and Jose Garcia.
//
// This library 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; either
// version 2.1 of the License, or (at your option) any later version.
// 
// This library 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 Public License for more details.
// 
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//
// You can contact University Corporation for Atmospheric Research at
// 3080 Center Green Drive, Boulder, CO 80301
 
// (c) COPYRIGHT OPeNDAP
// Please read the full copyright statement in the file COPYING.
 
#ifndef DaemonCommandHandler_h
#define DaemonCommandHandler_h 1
 
#include <string>
#include <vector>
 
#include "ServerHandler.h"
 
class Connection;
class BESXMLWriter;
 
class DaemonCommandHandler: public ServerHandler {
private:
    typedef enum {
        HAI_UNKNOWN,
        HAI_STOP_NOW,
        HAI_START,
        HAI_EXIT,
        HAI_GET_CONFIG,
        HAI_SET_CONFIG,
        HAI_TAIL_LOG,
        HAI_GET_LOG_CONTEXTS,
        HAI_SET_LOG_CONTEXT
    } hai_command;
 
    std::string d_bes_conf;
#if 0
    std::string d_config_dir;
    std::string d_include_dir;
#endif
 
    // Build a map of all the various config files. This map relates the name
    // of the config file (eg 'bes.conf') to the full pathname for that file.
    // Only the name of config file is shown in responses; we use the map to
    // actually find/read/write the file.
    std::map<std::string,std::string> d_pathnames;
 
    std::string d_log_file_name;
 
    void load_include_files(std::vector<std::string> &files, const std::string &keys_file_name);
    void load_include_file(const std::string &files, const std::string &keys_file_name);
 
    hai_command lookup_command(const std::string &command);
    void execute_command(const std::string &command, BESXMLWriter &writer);
 
public:
    explicit DaemonCommandHandler(const std::string &config);
    ~DaemonCommandHandler() override = default;
 
    std::string get_config_file() const { return d_bes_conf; }
    void set_config_file(const std::string &config) { d_bes_conf = config; }
 
    void handle(Connection *c) override;
 
    void dump(std::ostream &strm) const override;
};
 
#endif // DaemonCommandHandler_h