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dev: --dev-gossip-time so gossipd doesn't prune old data.

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This is useful for canned data, such as the million channels project.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2019-04-08 09:21:30 +09:30
parent b2c93beaed
commit f8f6533dba
11 changed files with 64 additions and 13 deletions
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30
gossipd/routing.c
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@@ -82,7 +82,8 @@ static struct node_map *empty_node_map(const tal_t *ctx)
struct routing_state *new_routing_state(const tal_t *ctx,
const struct chainparams *chainparams,
const struct pubkey *local_id,
u32 prune_timeout)
u32 prune_timeout,
const u32 *dev_gossip_time)
{
struct routing_state *rstate = tal(ctx, struct routing_state);
rstate->nodes = empty_node_map(rstate);
@@ -99,6 +100,16 @@ struct routing_state *new_routing_state(const tal_t *ctx,
rstate->pending_node_map = tal(ctx, struct pending_node_map);
pending_node_map_init(rstate->pending_node_map);
#if DEVELOPER
if (dev_gossip_time) {
rstate->gossip_time = tal(rstate, struct timeabs);
rstate->gossip_time->ts.tv_sec = *dev_gossip_time;
rstate->gossip_time->ts.tv_nsec = 0;
} else
rstate->gossip_time = NULL;
#endif
return rstate;
}
@@ -270,7 +281,7 @@ static void init_half_chan(struct routing_state *rstate,
c->message_flags = 0;
/* We haven't seen channel_update: make it halfway to prune time,
* which should be older than any update we'd see. */
c->last_timestamp = time_now().ts.tv_sec - rstate->prune_timeout/2;
c->last_timestamp = gossip_time_now(rstate).ts.tv_sec - rstate->prune_timeout/2;
}
static void bad_gossip_order(const u8 *msg, const char *source,
@@ -1273,7 +1284,7 @@ u8 *handle_channel_update(struct routing_state *rstate, const u8 *update TAKES,
* - if the `timestamp` is unreasonably far in the future:
* - MAY discard the `channel_update`.
*/
if (timestamp > time_now().ts.tv_sec + rstate->prune_timeout) {
if (timestamp > gossip_time_now(rstate).ts.tv_sec + rstate->prune_timeout) {
status_debug("Received channel_update for %s with far time %u",
type_to_string(tmpctx, struct short_channel_id,
&short_channel_id),
@@ -1282,7 +1293,7 @@ u8 *handle_channel_update(struct routing_state *rstate, const u8 *update TAKES,
}
/* Note: we can consider old timestamps a case of "instant prune" too */
if (timestamp < time_now().ts.tv_sec - rstate->prune_timeout) {
if (timestamp < gossip_time_now(rstate).ts.tv_sec - rstate->prune_timeout) {
status_debug("Received channel_update for %s with old time %u",
type_to_string(tmpctx, struct short_channel_id,
&short_channel_id),
@@ -1721,7 +1732,7 @@ void routing_failure(struct routing_state *rstate,
void route_prune(struct routing_state *rstate)
{
u64 now = time_now().ts.tv_sec;
u64 now = gossip_time_now(rstate).ts.tv_sec;
/* Anything below this highwater mark ought to be pruned */
const s64 highwater = now - rstate->prune_timeout;
const tal_t *pruned = tal(NULL, char);
@@ -1799,3 +1810,12 @@ bool handle_local_add_channel(struct routing_state *rstate, const u8 *msg)
new_chan(rstate, &scid, &rstate->local_id, &remote_node_id, sat);
return true;
}
struct timeabs gossip_time_now(const struct routing_state *rstate)
{
#if DEVELOPER
if (rstate->gossip_time)
return *rstate->gossip_time;
#endif
return time_now();
}