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/*
* This file is part of PowerDNS or weakforced.
* Copyright -- PowerDNS.COM B.V. and its contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 3 of the GNU General Public License as
* published by the Free Software Foundation.
*
* In addition, for the avoidance of any doubt, permission is granted to
* link this program with OpenSSL and to (re)distribute the binaries
* produced as the result of such linking.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#pragma once
#include "twmap.hh"
typedef boost::variant<std::string, int, ComboAddress> TWKeyType;
using VTWPtr = std::vector<std::shared_ptr<TWStatsDB<std::string>>>;
// This is a Lua-friendly wrapper to the Stats DB
// All db state is stored in the TWStatsDB shared pointer because passing back/forth to Lua means copies
class TWStringStatsDBWrapper
{
private:
std::shared_ptr<VTWPtr> sdbvp;
std::shared_ptr<bool> replicated;
int window_size=0;
int num_windows=0;
int num_shards=1;
std::string db_name;
protected:
unsigned int getShardIndex(const std::string& key);
public:
TWStringStatsDBWrapper(const std::string& name, int window_size, int num_windows);
TWStringStatsDBWrapper(const std::string& name, int window_size, int num_windows, const std::vector<pair<std::string, std::string>>& fmvec);
TWStringStatsDBWrapper(const std::string& name, int window_size, int num_windows, int num_shards);
TWStringStatsDBWrapper(const std::string& name, int window_size, int num_windows, const std::vector<pair<std::string, std::string>>& fmvec, int num_shards);
void enableReplication();
void disableReplication();
bool getReplicationStatus();
std::string getDBName();
bool setFields(const std::vector<pair<std::string, std::string>>& fmvec);
bool setFields(const FieldMap& fm);
const FieldMap& getFields();
void setv4Prefix(uint8_t bits);
void setv6Prefix(uint8_t bits);
std::string getStringKey(const TWKeyType vkey);
void add(const TWKeyType vkey, const std::string& field_name, const boost::variant<std::string, int, ComboAddress>& param1, boost::optional<int> param2);
void addInternal(const TWKeyType vkey, const std::string& field_name, const boost::variant<std::string, int, ComboAddress>& param1, boost::optional<int> param2, bool replicate=true);
void sub(const TWKeyType vkey, const std::string& field_name, const boost::variant<std::string, int>& val);
void subInternal(const TWKeyType vkey, const std::string& field_name, const boost::variant<std::string, int>& val, bool replicate=true);
int get(const TWKeyType vkey, const std::string& field_name, const boost::optional<boost::variant<std::string, ComboAddress>> param1);
int get_current(const TWKeyType vkey, const std::string& field_name, const boost::optional<boost::variant<std::string, ComboAddress>> param1);
std::vector<int> get_windows(const TWKeyType vkey, const std::string& field_name, const boost::optional<boost::variant<std::string, ComboAddress>> param1);
bool get_all_fields(const TWKeyType vkey, std::vector<std::pair<std::string, int>>& ret_vec);
void reset(const TWKeyType vkey);
void resetField(const TWKeyType vkey, const std::string& field_name);
void resetInternal(const TWKeyType vkey, bool replicate=true);
void resetFieldInternal(const TWKeyType vkey, const std::string& field_name, bool replicate=true);
unsigned int get_size();
unsigned int get_max_size();
void set_size_soft(unsigned int size);
void set_expire_sleep(unsigned int ms);
int windowSize();
int numWindows();
int numShards();
VTWPtr::const_iterator begin() const;
VTWPtr::const_iterator end() const;
std::list<std::string>::const_iterator startDBDump(VTWPtr::const_iterator& sdbp) const;
bool DBDumpEntry(VTWPtr::const_iterator& sdbp,
std::list<std::string>::const_iterator& i,
TWStatsDBDumpEntry& entry,
std::string& key) const;
bool DBGetEntry(VTWPtr::const_iterator& sdbp,
std::list<std::string>::const_iterator& i,
TWStatsDBEntry& entry,
std::string& key) const;
const std::list<std::string>::const_iterator DBDumpIteratorEnd(VTWPtr::const_iterator& sdbp) const;
void endDBDump(VTWPtr::const_iterator& sdbp) const;
void restoreEntry(const std::string& key, TWStatsDBDumpEntry& entry);
void startExpireThread();
};
extern std::mutex dbMap_mutx;
extern std::map<std::string, TWStringStatsDBWrapper> dbMap;
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