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gossip: Remove channels older than 2*channel-update-interval

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Signed-off-by: Christian Decker <decker.christian@gmail.com>
This commit is contained in:
Christian Decker 2018-01-09 21:51:45 +01:00 committed by Rusty Russell
parent 6e001d88c2
commit ca6c6feaad
1 changed files with 32 additions and 0 deletions
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32
gossipd/gossip.c
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@ -1251,6 +1251,10 @@ static void gossip_send_keepalive_update(struct routing_state *rstate,
static void gossip_prune_network(struct daemon *daemon)
{
u64 now = time_now().ts.tv_sec;
struct node_map_iter it;
/* Anything below this highwater mark ought to be pruned */
s64 highwater = now - 2*daemon->update_channel_interval;
/* Schedule next run now */
new_reltimer(&daemon->timers, daemon,
time_from_sec(daemon->update_channel_interval/2),
@ -1286,6 +1290,34 @@ static void gossip_prune_network(struct daemon *daemon)
gossip_send_keepalive_update(daemon->rstate, nc);
}
/* Now iterate through all channels and see if it is still alive */
for (n = node_map_first(daemon->rstate->nodes, &it); n;
n = node_map_next(daemon->rstate->nodes, &it)) {
for (size_t i = 0; i < tal_count(n->out); i++) {
struct node_connection *nc = n->out[i];
if (!nc->channel_update) {
/* Not even announced yet */
continue;
}
if (nc->last_timestamp > highwater) {
/* Still alive */
continue;
}
status_trace(
"Pruning channel %s/%d from network view (age %"PRIu64"s)",
type_to_string(trc, struct short_channel_id,
&nc->short_channel_id),
get_channel_direction(&nc->src->id, &nc->dst->id),
now - nc->last_timestamp);
/* Calls remove_conn_from_array internally, removes on
* both src and dst side. */
tal_free(nc);
}
}
}
static struct io_plan *connection_in(struct io_conn *conn, struct daemon *daemon)