stat: Explicitly support stat_items without unit

Add OSMO_STAT_ITEM_NO_UNIT for stat items without an unit. The
statsd reporter uses gauges ("g") to report them.

Sponsored-by: On-Waves ehf

1 files changed, 11 insertions, 1 deletions

diff --git a/src/stats_statsd.c b/src/stats_statsd.c
index c76f8f69..b93d90a7 100644
--- a/src/stats_statsd.c
+++ b/src/stats_statsd.c
@@ -151,8 +151,18 @@ static int osmo_stats_reporter_statsd_send_item(struct osmo_stats_reporter *srep
 	const struct osmo_stat_item_group *statg,
 	const struct osmo_stat_item_desc *desc, int value)
 {
+	char *unit = desc->unit;
+
+	if (unit == OSMO_STAT_ITEM_NO_UNIT) {
+		unit = "g";
+		if (value < 0)
+			osmo_stats_reporter_statsd_send(srep,
+				statg->desc->group_name_prefix,
+				statg->idx,
+				desc->name, 0, unit);
+	}
 	return osmo_stats_reporter_statsd_send(srep,
 		statg->desc->group_name_prefix,
 		statg->idx,
-		desc->name, value, desc->unit);
+		desc->name, value, unit);
 }