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Refactored stage sync logic. (#86)

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* Cleaned up stage time sync logic and avoided extra missed rounds.
* Moved stage sync time logic to beginning of consensus stage.
* Removed check_majority_stage.
* Re-organised lcl sync flow.
This commit is contained in:
Ravin Perera
2020-02-10 14:27:37 +01:00
committed by GitHub
parent 8cf869cf9e
commit 4fefb7ca71
14 changed files with 216 additions and 246 deletions
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39
src/p2p/p2p.cpp
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@@ -77,8 +77,10 @@ void peer_connection_watchdog()
/**
* Broadcasts the given message to all currently connected outbound peers.
* @param msg Peer outbound message to be broadcasted.
* @param send_to_self Whether to also send the message to self (this node).
*/
void broadcast_message(const peer_outbound_message msg, bool send_to_self)
void broadcast_message(const peer_outbound_message msg, const bool send_to_self)
{
if (ctx.peer_connections.size() == 0)
{
@@ -89,6 +91,7 @@ void broadcast_message(const peer_outbound_message msg, bool send_to_self)
//Broadcast while locking the peer_connections.
std::lock_guard<std::mutex> lock(ctx.peer_connections_mutex);
for (const auto &[k, session] : ctx.peer_connections)
{
if (!send_to_self && session->is_self)
@@ -98,15 +101,33 @@ void broadcast_message(const peer_outbound_message msg, bool send_to_self)
}
/**
* Send the given message to a random peer from currently connected outbound peers.
* @param msg peer outbound message to be sent to peer
* Sends the given message to self (this node).
* @param msg Peer outbound message to be sent to self.
*/
void send_message_to_random_peer(peer_outbound_message msg)
void send_message_to_self(const peer_outbound_message msg)
{
//Send while locking the peer_connections.
std::lock_guard<std::mutex> lock(p2p::ctx.peer_connections_mutex);
size_t connected_peers = ctx.peer_connections.size();
// Find the peer session connected to self.
const auto peer_itr = ctx.peer_connections.find(conf::cfg.self_peer_id);
if (peer_itr != ctx.peer_connections.end())
{
const auto session = peer_itr->second;
session->send(msg);
}
}
/**
* Sends the given message to a random peer (except self).
* @param msg Peer outbound message to be sent to peer.
*/
void send_message_to_random_peer(const peer_outbound_message msg)
{
//Send while locking the peer_connections.
std::lock_guard<std::mutex> lock(p2p::ctx.peer_connections_mutex);
const size_t connected_peers = ctx.peer_connections.size();
if (connected_peers == 0)
{
LOG_DBG << "No peers to send (not even self).";
@@ -121,13 +142,13 @@ void send_message_to_random_peer(peer_outbound_message msg)
while (true)
{
// Initialize random number generator with current timestamp.
int random_peer_index = (rand() % connected_peers); // select a random peer index.
const int random_peer_index = (rand() % connected_peers); // select a random peer index.
auto it = ctx.peer_connections.begin();
std::advance(it, random_peer_index); //move iterator to point to random selected peer.
//send message to selecte peer.
auto session = it->second;
if (!session->is_self)
//send message to selected peer.
const auto session = it->second;
if (!session->is_self) // Exclude self peer.
{
session->send(msg);
break;