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SON conn. pool

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This commit is contained in:
timur 2022-11-28 06:38:50 -04:00
parent 54a7e5b757
commit d2cb8cd846
1 changed files with 16 additions and 9 deletions
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25
libraries/plugins/peerplays_sidechain/common/rpc_client.cpp
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@ -311,6 +311,9 @@ void rpc_client::schedule_connection_selection()
void rpc_client::select_connection()
{
//ilog("n_active_rpc_client=${n}", ("n", n_active_rpc_client));
static const int t_limit = 10*1000000, // 10 sec
quality_diff_threshold = 10000; // 10 ms
FC_ASSERT(connections.size());
int best_n = -1;
@ -318,6 +321,9 @@ void rpc_client::select_connection()
std::vector<uint64_t> head_block_numbers;
head_block_numbers.resize(connections.size());
std::vector<int> qualities;
qualities.resize(connections.size());
for (size_t n=0; n < connections.size(); n++) {
rpc_connection *conn = connections[n];
@ -333,7 +339,6 @@ void rpc_client::select_connection()
t += rand() % 10;
FC_ASSERT(t != -1);
head_block_numbers[n] = head_block_number;
static const int t_limit = 10*1000000; // 10 sec
if (t < t_limit)
quality = t_limit - t; // the less time, the higher quality
@ -343,15 +348,17 @@ void rpc_client::select_connection()
best_quality = quality;
}
}
qualities[n] = quality;
}
FC_ASSERT(best_n != -1 && best_quality != -1);
if (best_n != n_active_conn) { // if the best client is not the current one, ...
uint64_t active_head_block_number = head_block_numbers[n_active_conn];
if (active_head_block_number == std::numeric_limits<uint64_t>::max() // ... and the current one has no known head block...
|| head_block_numbers[best_n] >= active_head_block_number) { // ...or the best client's head is more recent than the current, ...
n_active_conn = best_n; // ...then select new one
ilog("!!! rpc connection reselected, now ${n}", ("n", n_active_conn));
}
FC_ASSERT(best_n != -1 && best_quality != -1);
if (best_n != n_active_conn) { // if the best client is not the current one, ...
uint64_t active_head_block_number = head_block_numbers[n_active_conn];
if ((active_head_block_number == std::numeric_limits<uint64_t>::max() // ...and the current one has no known head block...
|| head_block_numbers[best_n] >= active_head_block_number) // ...or the best client's head is more recent than the current, ...
&& best_quality > qualities[n_active_conn] + quality_diff_threshold) { // ...and the new client's quality exceeds current more than by threshold
n_active_conn = best_n; // ...then select new one
ilog("!!! rpc connection reselected, now ${n}", ("n", n_active_conn));
}
}