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#pragma once
#include <algorithm>
#include <memory>
#include <unordered_map>
#include <unordered_set>
#include <boost/asio/ip/tcp.hpp>
#include <boost/beast/websocket.hpp>
// map connection <-> user id
class ConnectionRegistry
{
public:
using connection = std::shared_ptr<boost::beast::websocket::stream<boost::asio::ip::tcp::socket>>;
ConnectionRegistry() = default;
~ConnectionRegistry() = default;
void setId(connection c, const std::string& id);
// used via RegistryGuard
void addConnection(connection c);
void delConnection(connection c);
// iterate over all connections associated with a certain id
std::unordered_set<connection>::iterator begin(const std::string& id);
std::unordered_set<connection>::iterator end(const std::string& id);
// iterate over all connections
std::unordered_map<connection, std::string>::iterator begin();
std::unordered_map<connection, std::string>::iterator end();
void dump() const;
size_t number_of_connections() const;
private:
// map connection to id
std::unordered_map<connection, std::string> m_connections;
// map id to list of related connections, used for iteration over connections to notify about changes
std::unordered_map<std::string, std::unordered_set<connection>> m_ids;
public:
class RegistryGuard
{
public:
RegistryGuard(ConnectionRegistry& registry, connection c);
~RegistryGuard();
private:
ConnectionRegistry& m_registry;
connection m_connection;
};
};
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