cfgmgr.h

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// Copyright (C) 2012-2022 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
#ifndef CFGMGR_H
#define CFGMGR_H
 
#include <asiolink/io_address.h>
#include <dhcp/option.h>
#include <dhcp/option_space.h>
#include <dhcp/classify.h>
#include <dhcpsrv/d2_client_mgr.h>
#include <dhcpsrv/pool.h>
#include <dhcpsrv/srv_config.h>
#include <util/buffer.h>
#include <util/optional.h>
 
#include <boost/shared_ptr.hpp>
#include <boost/noncopyable.hpp>
 
#include <map>
#include <string>
#include <vector>
#include <list>
 
namespace isc {
namespace dhcp {
 
class DuplicateListeningIface : public Exception {
public:
    DuplicateListeningIface(const char* file, size_t line, const char* what) :
        isc::Exception(file, line, what) { };
};
 
class CfgMgr : public boost::noncopyable {
public:
 
    static const size_t CONFIG_LIST_SIZE;
 
    static CfgMgr& instance();
 
    util::Optional<std::string> getDataDir() const;
 
    void setDataDir(const std::string& datadir, bool unspecified = true);
 
    void setD2ClientConfig(D2ClientConfigPtr& new_config);
 
    bool ddnsEnabled();
 
    const D2ClientConfigPtr& getD2ClientConfig() const;
 
    D2ClientMgr& getD2ClientMgr();
 
 
 
    void clear();
 
    void commit();
 
    void rollback();
 
    void revert(const size_t index);
 
    SrvConfigPtr getCurrentCfg();
 
    SrvConfigPtr getStagingCfg();
 
    SrvConfigPtr createExternalCfg();
 
    void mergeIntoStagingCfg(const uint32_t seq);
 
    void mergeIntoCurrentCfg(const uint32_t seq);
 
 
    void setFamily(uint16_t family) {
        family_ = family == AF_INET ? AF_INET : AF_INET6;
    }
 
    uint16_t getFamily() const {
        return (family_);
    }
 
 
protected:
 
    CfgMgr();
 
    virtual ~CfgMgr();
 
private:
 
    void ensureCurrentAllocated();
 
 
    void mergeIntoCfg(const SrvConfigPtr& taget_config, const uint32_t seq);
 
    util::Optional<std::string> datadir_;
 
    D2ClientMgrPtr d2_client_mgr_;
 
    SrvConfigPtr configuration_;
 
 
 
    typedef std::list<SrvConfigPtr> SrvConfigList;
 
    SrvConfigList configs_;
 
 
 
    typedef std::map<uint32_t, SrvConfigPtr> SrvConfigMap;
 
    SrvConfigMap external_configs_;
 
    uint16_t family_;
};
 
} // namespace isc::dhcp
} // namespace isc
 
#endif // CFGMGR_H