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Implement rate limiting metrics.

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This commit is contained in:
George Kadianakis 2021-03-09 15:41:11 +02:00
parent faf1fe833e
commit e688580277
1 changed files with 15 additions and 0 deletions
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15
src/core/mainloop/connection.c
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@ -3439,6 +3439,16 @@ connection_bucket_read_limit(connection_t *conn, time_t now)
int priority = conn->type != CONN_TYPE_DIR;
ssize_t conn_bucket = -1;
size_t global_bucket_val = token_bucket_rw_get_read(&global_bucket);
if (global_bucket_val == 0) {
/* We reached our global read limit: count this as an overload.
*
* The token bucket is always initialized (see connection_bucket_init() and
* options_validate_relay_bandwidth()) and hence we can assume that if the
* token ever hits zero, it's a limit that got popped and not the bucket
* being uninitialized.
*/
rep_hist_note_overload(OVERLOAD_READ);
}
if (connection_speaks_cells(conn)) {
or_connection_t *or_conn = TO_OR_CONN(conn);
@ -3469,6 +3479,11 @@ connection_bucket_write_limit(connection_t *conn, time_t now)
int priority = conn->type != CONN_TYPE_DIR;
size_t conn_bucket = buf_datalen(conn->outbuf);
size_t global_bucket_val = token_bucket_rw_get_write(&global_bucket);
if (global_bucket_val == 0) {
/* We reached our global write limit: We should count this as an overload.
* See above function for more information */
rep_hist_note_overload(OVERLOAD_WRITE);
}
if (!connection_is_rate_limited(conn)) {
/* be willing to write to local conns even if our buckets are empty */