paymod: Add a getinfo call on payment_start to get the blockheight

This is necessary so we can build the absolute locktimes in the next step. For
now just fetch the blockheight on each (sub-)payment, later we can reuse the
root blockheight if it ends up using too much traffic.
This commit is contained in:
Christian Decker 2020-05-13 17:44:31 +02:00
parent 3c3e2c9c8f
commit 5ef7297e51

View File

@ -37,11 +37,44 @@ struct payment *payment_new(tal_t *ctx, struct command *cmd,
return p;
}
/* Generic handler for RPC failures that should end up failing the payment. */
static struct command_result *payment_rpc_failure(struct command *cmd,
const char *buffer,
const jsmntok_t *toks,
struct payment *p)
{
plugin_log(p->cmd->plugin, LOG_DBG,
"Failing a partial payment due to a failed RPC call: %.*s",
toks->end - toks->start, buffer + toks->start);
p->step = PAYMENT_STEP_FAILED;
payment_continue(p);
return command_still_pending(cmd);
}
static struct command_result *payment_getinfo_success(struct command *cmd,
const char *buffer,
const jsmntok_t *toks,
struct payment *p)
{
const jsmntok_t *blockheighttok =
json_get_member(buffer, toks, "blockheight");
json_to_number(buffer, blockheighttok, &p->start_block);
payment_continue(p);
return command_still_pending(cmd);
}
void payment_start(struct payment *p)
{
p->step = PAYMENT_STEP_INITIALIZED;
p->current_modifier = -1;
payment_continue(p);
/* TODO If this is not the root, we can actually skip the getinfo call
* and just reuse the parent's value. */
send_outreq(p->cmd->plugin,
jsonrpc_request_start(p->cmd->plugin, NULL, "getinfo",
payment_getinfo_success,
payment_rpc_failure, p));
}
static bool route_hop_from_json(struct route_hop *dst, const char *buffer,