Merge pull request #1600

1c4d65c0 Rename method to get_random_gray_peer (Miguel Herranz)
03a54ee0 Fix logging that broke after rebasing (Miguel Herranz)
6bdd3a59 Use set_peer_just_seen to keep last_seen updated (Miguel Herranz)
82dbeedd Add gray peer list housekeeping system (Miguel Herranz)
This commit is contained in:
Riccardo Spagni 2017-01-22 11:39:00 -05:00
commit bd068afa44
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3 changed files with 121 additions and 0 deletions

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@ -229,6 +229,9 @@ namespace nodetool
bool has_too_many_connections(const uint32_t ip);
bool check_connection_and_handshake_with_peer(const net_address& na, uint64_t last_seen_stamp);
bool gray_peerlist_housekeeping();
void kill() { ///< will be called e.g. from deinit()
_info("Killing the net_node");
is_closing = true;
@ -289,6 +292,7 @@ namespace nodetool
epee::math_helper::once_a_time_seconds<P2P_DEFAULT_HANDSHAKE_INTERVAL> m_peer_handshake_idle_maker_interval;
epee::math_helper::once_a_time_seconds<1> m_connections_maker_interval;
epee::math_helper::once_a_time_seconds<60*30, false> m_peerlist_store_interval;
epee::math_helper::once_a_time_seconds<60> m_gray_peerlist_housekeeping_interval;
std::string m_bind_ip;
std::string m_port;

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@ -926,6 +926,50 @@ namespace nodetool
return true;
}
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::check_connection_and_handshake_with_peer(const net_address& na, uint64_t last_seen_stamp)
{
LOG_PRINT_L1("Connecting to " << epee::string_tools::get_ip_string_from_int32(na.ip) << ":"
<< epee::string_tools::num_to_string_fast(na.port) << "(last_seen: "
<< (last_seen_stamp ? epee::misc_utils::get_time_interval_string(time(NULL) - last_seen_stamp):"never")
<< ")...");
typename net_server::t_connection_context con = AUTO_VAL_INIT(con);
bool res = m_net_server.connect(epee::string_tools::get_ip_string_from_int32(na.ip),
epee::string_tools::num_to_string_fast(na.port),
m_config.m_net_config.connection_timeout,
con);
if (!res) {
bool is_priority = is_priority_node(na);
LOG_PRINT_CC_PRIORITY_NODE(is_priority, con, "Connect failed to "
<< epee::string_tools::get_ip_string_from_int32(na.ip)
<< ":" << epee::string_tools::num_to_string_fast(na.port));
return false;
}
peerid_type pi = AUTO_VAL_INIT(pi);
res = do_handshake_with_peer(pi, con, true);
if (!res) {
bool is_priority = is_priority_node(na);
LOG_PRINT_CC_PRIORITY_NODE(is_priority, con, "Failed to HANDSHAKE with peer "
<< epee::string_tools::get_ip_string_from_int32(na.ip)
<< ":" << epee::string_tools::num_to_string_fast(na.port));
return false;
}
m_net_server.get_config_object().close(con.m_connection_id);
LOG_DEBUG_CC(con, "CONNECTION HANDSHAKED OK AND CLOSED.");
return true;
}
#undef LOG_PRINT_CC_PRIORITY_NODE
//-----------------------------------------------------------------------------------
@ -1097,6 +1141,7 @@ namespace nodetool
{
m_peer_handshake_idle_maker_interval.do_call(boost::bind(&node_server<t_payload_net_handler>::peer_sync_idle_maker, this));
m_connections_maker_interval.do_call(boost::bind(&node_server<t_payload_net_handler>::connections_maker, this));
m_gray_peerlist_housekeeping_interval.do_call(boost::bind(&node_server<t_payload_net_handler>::gray_peerlist_housekeeping, this));
m_peerlist_store_interval.do_call(boost::bind(&node_server<t_payload_net_handler>::store_config, this));
return true;
}
@ -1704,4 +1749,30 @@ namespace nodetool
return count > max_connections;
}
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::gray_peerlist_housekeeping()
{
peerlist_entry pe = AUTO_VAL_INIT(pe);
if (!m_peerlist.get_random_gray_peer(pe)) {
return false;
}
bool success = check_connection_and_handshake_with_peer(pe.adr, pe.last_seen);
if (!success) {
m_peerlist.remove_from_peer_gray(pe);
LOG_PRINT_L2("PEER EVICTED FROM GRAY PEER LIST IP address: " << epee::string_tools::get_ip_string_from_int32(pe.adr.ip) << " Peer ID: " << std::hex << pe.id);
return true;
}
m_peerlist.set_peer_just_seen(pe.id, pe.adr);
LOG_PRINT_L2("PEER PROMOTED TO WHITE PEER LIST IP address: " << epee::string_tools::get_ip_string_from_int32(pe.adr.ip) << " Peer ID: " << std::hex << pe.id);
return true;
}
}

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@ -81,6 +81,8 @@ namespace nodetool
bool set_peer_just_seen(peerid_type peer, const net_address& addr);
bool set_peer_unreachable(const peerlist_entry& pr);
bool is_ip_allowed(uint32_t ip);
bool get_random_gray_peer(peerlist_entry& pe);
bool remove_from_peer_gray(const peerlist_entry& pe);
private:
@ -396,6 +398,50 @@ namespace nodetool
return true;
}
//--------------------------------------------------------------------------------------------------
inline
bool peerlist_manager::get_random_gray_peer(peerlist_entry& pe)
{
TRY_ENTRY();
CRITICAL_REGION_LOCAL(m_peerlist_lock);
if (m_peers_gray.empty()) {
return false;
}
size_t x = crypto::rand<size_t>() % (m_peers_gray.size() + 1);
size_t res = (x * x * x) / (m_peers_gray.size() * m_peers_gray.size()); //parabola \/
LOG_PRINT_L3("Random gray peer index=" << res << "(x="<< x << ", max_index=" << m_peers_gray.size() << ")");
peers_indexed::index<by_time>::type& by_time_index = m_peers_gray.get<by_time>();
pe = *epee::misc_utils::move_it_backward(--by_time_index.end(), res);
return true;
CATCH_ENTRY_L0("peerlist_manager::get_random_gray_peer()", false);
return true;
}
//--------------------------------------------------------------------------------------------------
inline
bool peerlist_manager::remove_from_peer_gray(const peerlist_entry& pe)
{
TRY_ENTRY();
CRITICAL_REGION_LOCAL(m_peerlist_lock);
peers_indexed::index_iterator<by_addr>::type iterator = m_peers_gray.get<by_addr>().find(pe.adr);
if (iterator != m_peers_gray.get<by_addr>().end()) {
m_peers_gray.erase(iterator);
}
return true;
CATCH_ENTRY_L0("peerlist_manager::remove_from_peer_gray()", false);
return true;
}
//--------------------------------------------------------------------------------------------------
}
BOOST_CLASS_VERSION(nodetool::peerlist_manager, CURRENT_PEERLIST_STORAGE_ARCHIVE_VER)