Function get_feerate_floor

plugins/bcli.c:528–553

Get the feerate floor from getmempoolinfo. * Returns NULL on success (floor stored in *perkb_floor), or error response. */

/* Get the feerate floor from getmempoolinfo.
 * Returns NULL on success (floor stored in *perkb_floor), or error response. */
static struct command_result *get_feerate_floor(struct command *cmd,
						u64 *perkb_floor)
{
	struct bcli_result *res;
	const jsmntok_t *tokens;
	const char *err;
	u64 mempoolfee, relayfee;

	res = run_bitcoin_cli(cmd, cmd->plugin, "getmempoolinfo", NULL);
	if (res->exitstatus != 0)
		return estimatefees_null_response(cmd);

	tokens = json_parse_simple(res->output, res->output, res->output_len);
	if (!tokens)
		return command_err(cmd, res, "bad JSON: cannot parse");

	err = json_scan(tmpctx, res->output, tokens,
			"{mempoolminfee:%,minrelaytxfee:%}",
			JSON_SCAN(json_to_bitcoin_amount, &mempoolfee),
			JSON_SCAN(json_to_bitcoin_amount, &relayfee));
	if (err)
		return command_err(cmd, res, tal_fmt(tmpctx, "bad JSON: %s", err));

	*perkb_floor = max_u64(mempoolfee, relayfee);
	return NULL;
}

/* Get a single feerate from estimatesmartfee.
 * Returns NULL on success (feerate stored in *perkb), or error response. */