config_cache.h

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// Copyright (C) 2023-2025 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 CONFIG_CACHE_H
#define CONFIG_CACHE_H
 
#include <ping_check_config.h>
#include <cc/base_stamped_element.h>
#include <cc/data.h>
#include <dhcpsrv/subnet.h>
 
#include <map>
#include <mutex>
 
namespace isc {
namespace ping_check {

class ConfigCache : public data::BaseStampedElement {
public:
    ConfigCache() : configs_(), global_config_(new PingCheckConfig()), mutex_(new std::mutex) {
    }

    virtual ~ConfigCache() = default;

    bool findConfig(const dhcp::SubnetID& subnet_id,
                    PingCheckConfigPtr& config);

    PingCheckConfigPtr parseAndCacheConfig(const dhcp::SubnetID& subnet_id,
                                           data::ConstElementPtr& user_context);

    void cacheConfig(const dhcp::SubnetID& subnet_id,
                     PingCheckConfigPtr& config);

    void flush();

    size_t size();

    boost::posix_time::ptime getLastFlushTime();

    PingCheckConfigPtr& getGlobalConfig();

    void setGlobalConfig(PingCheckConfigPtr& config);
 
private:
    bool findConfigInternal(const dhcp::SubnetID& subnet_id,
                            PingCheckConfigPtr& config) const;

    std::map<dhcp::SubnetID, PingCheckConfigPtr> configs_;

    PingCheckConfigPtr global_config_;

    const boost::scoped_ptr<std::mutex> mutex_;
};

typedef boost::shared_ptr<ConfigCache> ConfigCachePtr;
 
} // end of namespace ping_check
} // end of namespace isc
#endif