lokinet/llarp/router/outbound_session_maker.hpp
2020-01-07 13:00:03 -05:00

127 lines
3.3 KiB
C++

#ifndef LLARP_ROUTER_OUTBOUND_SESSION_MAKER_HPP
#define LLARP_ROUTER_OUTBOUND_SESSION_MAKER_HPP
#include <router/i_outbound_session_maker.hpp>
#include <router/i_rc_lookup_handler.hpp>
#include <util/thread/logic.hpp>
#include <util/thread/threading.hpp>
#include <util/thread/thread_pool.hpp>
#include <profiling.hpp>
#include <unordered_map>
#include <list>
#include <memory>
struct llarp_nodedb;
namespace llarp
{
struct PendingSession;
struct ILinkManager;
struct I_RCLookupHandler;
struct OutboundSessionMaker final : public IOutboundSessionMaker
{
using CallbacksQueue = std::list< RouterCallback >;
public:
~OutboundSessionMaker() override = default;
bool
OnSessionEstablished(ILinkSession *session) override;
void
OnConnectTimeout(ILinkSession *session) override;
void
CreateSessionTo(const RouterID &router, RouterCallback on_result) override
LOCKS_EXCLUDED(_mutex);
void
CreateSessionTo(const RouterContact &rc, RouterCallback on_result) override
LOCKS_EXCLUDED(_mutex);
bool
HavePendingSessionTo(const RouterID &router) const override
LOCKS_EXCLUDED(_mutex);
void
ConnectToRandomRouters(int numDesired) override;
util::StatusObject
ExtractStatus() const override;
bool
ShouldConnectTo(const RouterID &router) const override
LOCKS_EXCLUDED(_mutex);
void
Init(ILinkManager *linkManager, I_RCLookupHandler *rcLookup,
Profiling *profiler, std::shared_ptr< Logic > logic,
llarp_nodedb *nodedb,
std::shared_ptr< llarp::thread::ThreadPool > threadpool);
void
SetOurRouter(RouterID r)
{
us = std::move(r);
}
/// always maintain this many connections to other routers
size_t minConnectedRouters = 4;
/// hard upperbound limit on the number of router to router connections
size_t maxConnectedRouters = 6;
private:
void
DoEstablish(const RouterID &router) LOCKS_EXCLUDED(_mutex);
void
GotRouterContact(const RouterID &router, const RouterContact &rc)
LOCKS_EXCLUDED(_mutex);
void
InvalidRouter(const RouterID &router);
void
RouterNotFound(const RouterID &router);
void
OnRouterContactResult(const RouterID &router, const RouterContact *const rc,
const RCRequestResult result);
void
VerifyRC(const RouterContact rc);
void
CreatePendingSession(const RouterID &router) LOCKS_EXCLUDED(_mutex);
void
FinalizeRequest(const RouterID &router, const SessionResult type)
LOCKS_EXCLUDED(_mutex);
mutable util::Mutex _mutex; // protects pendingSessions, pendingCallbacks
std::unordered_map< RouterID, std::shared_ptr< PendingSession >,
RouterID::Hash >
pendingSessions GUARDED_BY(_mutex);
std::unordered_map< RouterID, CallbacksQueue, RouterID::Hash >
pendingCallbacks GUARDED_BY(_mutex);
ILinkManager *_linkManager = nullptr;
I_RCLookupHandler *_rcLookup = nullptr;
Profiling *_profiler = nullptr;
llarp_nodedb *_nodedb = nullptr;
std::shared_ptr< Logic > _logic;
std::shared_ptr< llarp::thread::ThreadPool > _threadpool;
RouterID us;
};
} // namespace llarp
#endif // LLARP_ROUTER_OUTBOUND_SESSION_MAKER_HPP