lokinet/llarp/rpc/lokid_rpc_client.hpp
2023-10-24 08:40:18 -07:00

96 lines
2.5 KiB
C++

#pragma once
#include <llarp/router_id.hpp>
#include <oxenmq/oxenmq.h>
#include <oxenmq/address.h>
#include <llarp/crypto/types.hpp>
#include <llarp/dht/key.hpp>
#include <llarp/service/name.hpp>
namespace llarp
{
struct Router;
namespace rpc
{
/// The LokidRpcClient uses loki-mq to talk to make API requests to lokid.
struct LokidRpcClient : public std::enable_shared_from_this<LokidRpcClient>
{
explicit LokidRpcClient(std::shared_ptr<oxenmq::OxenMQ> lmq, std::weak_ptr<Router> r);
/// Connect to lokid async
void
ConnectAsync(oxenmq::address url);
/// blocking request identity key from lokid
/// throws on failure
SecretKey
ObtainIdentityKey();
/// get what the current block height is according to oxend
uint64_t
BlockHeight() const
{
return m_BlockHeight;
}
void
lookup_ons_hash(
std::string namehash,
std::function<void(std::optional<service::EncryptedName>)> resultHandler);
/// inform that if connected to a router successfully
void
InformConnection(RouterID router, bool success);
void
StartPings();
private:
/// do a lmq command on the current connection
void
Command(std::string_view cmd);
/// triggers a service node list refresh from oxend; thread-safe and will do nothing if an
/// update is already in progress.
void
UpdateServiceNodeList();
template <typename HandlerFunc_t, typename Args_t>
void
Request(std::string_view cmd, HandlerFunc_t func, const Args_t& args)
{
m_lokiMQ->request(*m_Connection, std::move(cmd), std::move(func), args);
}
template <typename HandlerFunc_t>
void
Request(std::string_view cmd, HandlerFunc_t func)
{
m_lokiMQ->request(*m_Connection, std::move(cmd), std::move(func));
}
// Handles a service node list update; takes the "service_node_states" object of an oxend
// "get_service_nodes" rpc request.
void
HandleNewServiceNodeList(const nlohmann::json& json);
// Handles notification of a new block
void
HandleNewBlock(oxenmq::Message& msg);
std::optional<oxenmq::ConnectionID> m_Connection;
std::shared_ptr<oxenmq::OxenMQ> m_lokiMQ;
std::weak_ptr<Router> m_Router;
std::atomic<bool> m_UpdatingList;
std::string m_LastUpdateHash;
std::unordered_map<RouterID, PubKey> m_KeyMap;
uint64_t m_BlockHeight;
};
} // namespace rpc
} // namespace llarp