Function install_expiration_timer

wallet/invoices.c:211–262

}

static void install_expiration_timer(struct invoices *invoices)
{
	bool res;
	struct db_stmt *stmt;
	struct timerel rel;
	struct timeabs expiry;
	struct timeabs now = clock_time();

	assert(!invoices->expiration_timer);

	/* Find unpaid invoice with nearest expiry time */
	stmt = db_prepare_v2(invoices->wallet->db, SQL("SELECT MIN(expiry_time)"
					       "  FROM invoices"
					       " WHERE state = ?;"));
	db_bind_int(stmt, UNPAID);

	db_query_prepared(stmt);

	res = db_step(stmt);
	assert(res);

	if (db_col_is_null(stmt, "MIN(expiry_time)"))
		/* Nothing to install */
		goto done;

	invoices->min_expiry_time = db_col_u64(stmt,
					       "MIN(expiry_time)");

	memset(&expiry, 0, sizeof(expiry));
	expiry.ts.tv_sec = invoices->min_expiry_time;

	/* Hi!  On a 32 bit time_t platform with an expiry after 2038?  Let's
	 * not set a timer, assuming you'll upgrade before then! */
	if (expiry.ts.tv_sec != invoices->min_expiry_time)
		goto done;

	/* now > expiry */
	if (time_after(now, expiry))
		expiry = now;

	/* rel = expiry - now */
	rel = time_between(expiry, now);

	/* Have it called at indicated timerel. */
	invoices->expiration_timer = new_reltimer(invoices->timers,
						  invoices,
						  rel,
						  &trigger_expiration,
						  invoices);
done:
	tal_free(stmt);
}

bool invoices_create(struct invoices *invoices,
		     u64 *inv_dbid,