Function getchaininfo_done

plugins/bwatch/bwatch.c:253–294

getchaininfo response: pick the next block to fetch (or just reschedule). */

/* getchaininfo response: pick the next block to fetch (or just reschedule). */
static struct command_result *getchaininfo_done(struct command *cmd,
						const char *method UNUSED,
						const char *buf,
						const jsmntok_t *result,
						void *unused UNUSED)
{
	struct bwatch *bwatch = bwatch_of(cmd->plugin);
	u32 blockheight;
	const char *err;

	err = json_scan(tmpctx, buf, result,
			"{blockcount:%}",
			JSON_SCAN(json_to_number, &blockheight));
	if (err) {
		plugin_log(cmd->plugin, LOG_BROKEN,
			   "getchaininfo parse failed: %s", err);
		return poll_finished(cmd);
	}

	if (blockheight > bwatch->current_height) {
		u32 target_height;

		/* On first init we jump straight to the chain tip; afterwards
		 * we catch up one block at a time so handle_block can validate
		 * each parent hash (added in a later commit). */
		if (bwatch->current_height == 0) {
			plugin_log(cmd->plugin, LOG_DBG,
				   "First poll: init at block %u",
				   blockheight);
			target_height = blockheight;
		} else {
			target_height = bwatch->current_height + 1;
		}

		return fetch_block_handle(cmd, target_height);
	}

	plugin_log(cmd->plugin, LOG_DBG,
		   "No block change, current_height remains %u",
		   bwatch->current_height);
	return poll_finished(cmd);
}

/* Non-fatal: bcli may not have come up yet — log and retry on the next poll. */
static struct command_result *getchaininfo_failed(struct command *cmd,