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gossipd: get fed the blockheight from lightningd when we know it.

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This will let gossipd be more intelligent about gossiping before we're
synced, and also it might know how far behind we are.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2019-09-22 11:36:43 +09:30
parent 6955bf6b86
commit 6f9c5f2936
9 changed files with 53 additions and 0 deletions
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4
gossipd/gossip_wire.csv
View File

@ -164,3 +164,7 @@ msgdata,gossip_get_incoming_channels,private_too,?bool,
msgtype,gossip_get_incoming_channels_reply,3125
msgdata,gossip_get_incoming_channels_reply,num,u16,
msgdata,gossip_get_incoming_channels_reply,route_info,route_info,num
# master -> gossipd: blockheight increased.
msgtype,gossip_new_blockheight,3026
msgdata,gossip_new_blockheight,blockheight,u32,

Can't render this file because it has a wrong number of fields in line 6.

13
gossipd/gossipd.c
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@ -2344,6 +2344,15 @@ static struct io_plan *get_incoming_channels(struct io_conn *conn,
return daemon_conn_read_next(conn, daemon->master);
}
static struct io_plan *new_blockheight(struct io_conn *conn,
struct daemon *daemon,
const u8 *msg)
{
if (!fromwire_gossip_new_blockheight(msg, &daemon->current_blockheight))
master_badmsg(WIRE_GOSSIP_NEW_BLOCKHEIGHT, msg);
return daemon_conn_read_next(conn, daemon->master);
}
#if DEVELOPER
static struct io_plan *query_scids_req(struct io_conn *conn,
struct daemon *daemon,
@ -2801,6 +2810,9 @@ static struct io_plan *recv_req(struct io_conn *conn,
case WIRE_GOSSIP_GET_INCOMING_CHANNELS:
return get_incoming_channels(conn, daemon, msg);
case WIRE_GOSSIP_NEW_BLOCKHEIGHT:
return new_blockheight(conn, daemon, msg);
#if DEVELOPER
case WIRE_GOSSIP_QUERY_SCIDS:
return query_scids_req(conn, daemon, msg);
@ -2875,6 +2887,7 @@ int main(int argc, char *argv[])
daemon->unknown_scids = tal_arr(daemon, struct short_channel_id, 0);
daemon->gossip_missing = NULL;
daemon->node_announce_timer = NULL;
daemon->current_blockheight = 0; /* i.e. unknown */
/* Note the use of time_mono() here. That's a monotonic clock, which
* is really useful: it can only be used to measure relative events

3
gossipd/gossipd.h
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@ -18,6 +18,9 @@ struct daemon {
/* Peers we are gossiping to: id is unique */
struct list_head peers;
/* Current blockheight: 0 means we're not up-to-date. */
u32 current_blockheight;
/* Connection to lightningd. */
struct daemon_conn *master;

3
gossipd/test/run-crc32_of_update.c
View File

@ -100,6 +100,9 @@ bool fromwire_gossip_get_txout_reply(const tal_t *ctx UNNEEDED, const void *p UN
/* Generated stub for fromwire_gossip_local_channel_close */
bool fromwire_gossip_local_channel_close(const void *p UNNEEDED, struct short_channel_id *short_channel_id UNNEEDED)
{ fprintf(stderr, "fromwire_gossip_local_channel_close called!\n"); abort(); }
/* Generated stub for fromwire_gossip_new_blockheight */
bool fromwire_gossip_new_blockheight(const void *p UNNEEDED, u32 *blockheight UNNEEDED)
{ fprintf(stderr, "fromwire_gossip_new_blockheight called!\n"); abort(); }
/* Generated stub for fromwire_gossip_new_peer */
bool fromwire_gossip_new_peer(const void *p UNNEEDED, struct node_id *id UNNEEDED, bool *gossip_queries_feature UNNEEDED, bool *initial_routing_sync UNNEEDED)
{ fprintf(stderr, "fromwire_gossip_new_peer called!\n"); abort(); }

3
gossipd/test/run-extended-info.c
View File

@ -108,6 +108,9 @@ bool fromwire_gossip_get_txout_reply(const tal_t *ctx UNNEEDED, const void *p UN
/* Generated stub for fromwire_gossip_local_channel_close */
bool fromwire_gossip_local_channel_close(const void *p UNNEEDED, struct short_channel_id *short_channel_id UNNEEDED)
{ fprintf(stderr, "fromwire_gossip_local_channel_close called!\n"); abort(); }
/* Generated stub for fromwire_gossip_new_blockheight */
bool fromwire_gossip_new_blockheight(const void *p UNNEEDED, u32 *blockheight UNNEEDED)
{ fprintf(stderr, "fromwire_gossip_new_blockheight called!\n"); abort(); }
/* Generated stub for fromwire_gossip_new_peer */
bool fromwire_gossip_new_peer(const void *p UNNEEDED, struct node_id *id UNNEEDED, bool *gossip_queries_feature UNNEEDED, bool *initial_routing_sync UNNEEDED)
{ fprintf(stderr, "fromwire_gossip_new_peer called!\n"); abort(); }

21
lightningd/gossip_control.c
View File

@ -152,6 +152,7 @@ static unsigned gossip_msg(struct subd *gossip, const u8 *msg, const int *fds)
case WIRE_GOSSIP_DEV_MEMLEAK:
case WIRE_GOSSIP_DEV_COMPACT_STORE:
case WIRE_GOSSIP_DEV_SET_TIME:
case WIRE_GOSSIP_NEW_BLOCKHEIGHT:
/* This is a reply, so never gets through to here. */
case WIRE_GOSSIP_GETNODES_REPLY:
case WIRE_GOSSIP_GETROUTE_REPLY:
@ -175,6 +176,22 @@ static unsigned gossip_msg(struct subd *gossip, const u8 *msg, const int *fds)
return 0;
}
void gossip_notify_new_block(struct lightningd *ld, u32 blockheight)
{
/* Only notify gossipd once we're synced. */
if (!topology_synced(ld->topology))
return;
subd_send_msg(ld->gossip,
take(towire_gossip_new_blockheight(NULL, blockheight)));
}
static void gossip_topology_synced(struct chain_topology *topo, void *unused)
{
/* Now we start telling gossipd about blocks. */
gossip_notify_new_block(topo->ld, get_block_height(topo));
}
/* Create the `gossipd` subdaemon and send the initialization
* message */
void gossip_init(struct lightningd *ld, int connectd_fd)
@ -190,6 +207,10 @@ void gossip_init(struct lightningd *ld, int connectd_fd)
if (!ld->gossip)
err(1, "Could not subdaemon gossip");
/* We haven't started topology yet, so tell us when we're synced. */
topology_add_sync_waiter(ld->gossip, ld->topology,
gossip_topology_synced, NULL);
msg = towire_gossipctl_init(
tmpctx,
&get_chainparams(ld)->genesis_blockhash, &ld->id,

2
lightningd/gossip_control.h
View File

@ -12,4 +12,6 @@ void gossip_init(struct lightningd *ld, int connectd_fd);
void gossipd_notify_spend(struct lightningd *ld,
const struct short_channel_id *scid);
void gossip_notify_new_block(struct lightningd *ld, u32 blockheight);
#endif /* LIGHTNING_LIGHTNINGD_GOSSIP_CONTROL_H */

1
lightningd/lightningd.c
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@ -586,6 +586,7 @@ void notify_new_block(struct lightningd *ld, u32 block_height)
/* Inform our subcomponents individually. */
htlcs_notify_new_block(ld, block_height);
channel_notify_new_block(ld, block_height);
gossip_notify_new_block(ld, block_height);
}
static void on_sigint(int _ UNUSED)

3
lightningd/test/run-find_my_abspath.c
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@ -81,6 +81,9 @@ struct log_book *get_log_book(const struct log *log UNNEEDED)
/* Generated stub for gossip_init */
void gossip_init(struct lightningd *ld UNNEEDED, int connectd_fd UNNEEDED)
{ fprintf(stderr, "gossip_init called!\n"); abort(); }
/* Generated stub for gossip_notify_new_block */
void gossip_notify_new_block(struct lightningd *ld UNNEEDED, u32 blockheight UNNEEDED)
{ fprintf(stderr, "gossip_notify_new_block called!\n"); abort(); }
/* Generated stub for handle_early_opts */
void handle_early_opts(struct lightningd *ld UNNEEDED, int argc UNNEEDED, char *argv[])
{ fprintf(stderr, "handle_early_opts called!\n"); abort(); }