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devtools/create-gossipstore: write timestamps to the gossip_store.

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We need the timestamp for channel_announcement, but this is simplified
because MCP always follows the channel_announcement by a channel_update.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2019-06-04 03:48:25 +09:30
parent 948490ec58
commit 2abae05daa
1 changed files with 74 additions and 19 deletions
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93
devtools/create-gossipstore.c
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@ -22,7 +22,7 @@
struct scidsat {
struct short_channel_id scid;
struct amount_sat sat;
} scidsat;
};
/* read scid,satoshis csv file and create return an array of scidsat pointers */
static struct scidsat *load_csv_file(FILE *scidf)
@ -50,18 +50,52 @@ static struct scidsat *load_csv_file(FILE *scidf)
return scidsats;
}
static void write_outmsg(int outfd, const u8 *outmsg)
static void write_outmsg(int outfd, const u8 *outmsg, u32 timestamp)
{
beint32_t hdr[2];
struct gossip_hdr hdr;
hdr[0] = cpu_to_be32(tal_count(outmsg));
hdr[1] = cpu_to_be32(crc32c(0, outmsg, tal_count(outmsg)));
hdr.len = cpu_to_be32(tal_count(outmsg));
hdr.crc = cpu_to_be32(crc32c(timestamp, outmsg, tal_count(outmsg)));
hdr.timestamp = cpu_to_be32(timestamp);
if (!write_all(outfd, hdr, sizeof(hdr))
if (!write_all(outfd, &hdr, sizeof(hdr))
|| !write_all(outfd, outmsg, tal_count(outmsg)))
err(1, "Writing output");
}
static u32 get_update_timestamp(const u8 *msg, struct short_channel_id *scid)
{
secp256k1_ecdsa_signature sig;
struct bitcoin_blkid chain_hash;
u32 timestamp;
u8 u8_ignore;
u16 u16_ignore;
u32 u32_ignore;
struct amount_msat msat;
if (fromwire_channel_update(msg, &sig, &chain_hash, scid,
&timestamp, &u8_ignore, &u8_ignore,
&u16_ignore, &msat, &u32_ignore,
&u32_ignore))
return timestamp;
errx(1, "Invalid channel_update");
}
static u32 get_node_announce_timestamp(const u8 *msg)
{
secp256k1_ecdsa_signature sig;
u32 timestamp;
struct node_id id;
u8 rgb_color[3], alias[32];
u8 *features, *addresses;
if (fromwire_node_announcement(tmpctx, msg, &sig, &features, &timestamp,
&id, rgb_color, alias, &addresses))
return timestamp;
errx(1, "Invalid node_announcement");
}
int main(int argc, char *argv[])
{
u8 version;
@ -71,6 +105,7 @@ int main(int argc, char *argv[])
char *infile = NULL, *outfile = NULL, *csvfile = NULL, *csat = NULL;
int infd, outfd, scidi = 0, channels = 0, nodes = 0, updates = 0;
struct scidsat *scidsats = NULL;
const u8 *last_announce = NULL;
unsigned max = -1U;
setup_locale();
@ -132,14 +167,19 @@ int main(int argc, char *argv[])
while (read_all(infd, &be_inlen, sizeof(be_inlen))) {
u32 msglen = be16_to_cpu(be_inlen);
u8 *inmsg = tal_arr(NULL, u8, msglen);
u32 timestamp;
struct short_channel_id scid;
if (!read_all(infd, inmsg, msglen))
err(1, "Only read partial message");
if (verbose)
fprintf(stderr, "%s\n",
wire_type_name(fromwire_peektype(inmsg)));
switch (fromwire_peektype(inmsg)) {
case WIRE_CHANNEL_ANNOUNCEMENT:
if (scidsats) {
struct short_channel_id scid;
/* We ignore these; we just want scid */
secp256k1_ecdsa_signature sig;
u8 *features;
@ -162,26 +202,41 @@ int main(int argc, char *argv[])
&pubkey))
errx(1, "bad channel_announcement");
if (!short_channel_id_eq(&scid, &scidsats[scidi].scid))
errx(1, "scid of message does not match scid in csv");
sat = scidsats[scidi].sat;
scidi++;
errx(1, "scid of channel_announcement does not match scid in csv");
if (last_announce)
errx(1, "Expected update before announce");
last_announce = inmsg;
inmsg = NULL;
}
/* First write announce */
write_outmsg(outfd, inmsg);
channels += 1;
/* Now write amount */
write_outmsg(outfd,
towire_gossip_store_channel_amount(inmsg,
sat));
break;
case WIRE_CHANNEL_UPDATE:
write_outmsg(outfd, inmsg);
/* We assume update immediately follows announcement */
timestamp = get_update_timestamp(inmsg, &scid);
if (last_announce) {
if (scidsats && !short_channel_id_eq(&scid,
&scidsats[scidi].scid))
errx(1, "scid of channel_update does not match scid in csv");
/* Now we have timestamp, write out announce */
/* First write announce */
write_outmsg(outfd, last_announce, timestamp);
last_announce = tal_free(last_announce);
channels += 1;
/* Now write amount */
write_outmsg(outfd,
towire_gossip_store_channel_amount(inmsg,
scidsats ? scidsats[scidi].sat: sat),
0);
scidi++;
}
write_outmsg(outfd, inmsg, timestamp);
updates += 1;
break;
case WIRE_NODE_ANNOUNCEMENT:
write_outmsg(outfd, inmsg);
timestamp = get_node_announce_timestamp(inmsg);
write_outmsg(outfd, inmsg, timestamp);
nodes += 1;
break;