From 1c6780be239b72e2abb39eb2e1c29e5589acc37b Mon Sep 17 00:00:00 2001
From: Steffen Vogel <post@steffenvogel.de>
Date: Sun, 17 Feb 2019 22:23:15 +0100
Subject: [PATCH] stats: properly handle invalid metric and type names

---
 include/villas/stats.h | 2 ++
 lib/stats.c            | 4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/villas/stats.h b/include/villas/stats.h
index 3266d21d3..a7a75e9e5 100644
--- a/include/villas/stats.h
+++ b/include/villas/stats.h
@@ -44,6 +44,7 @@ enum stats_format {
 };
 
 enum stats_metric {
+	STATS_METRIC_INVALID = -1,
 	STATS_METRIC_SKIPPED,		/**< Counter for skipped samples due to hooks. */
 	STATS_METRIC_REORDERED,		/**< Counter for reordered samples. */
 	STATS_METRIC_GAP_SAMPLE,	/**< Histogram for inter sample timestamps (as sent by remote). */
@@ -53,6 +54,7 @@ enum stats_metric {
 };
 
 enum stats_type {
+	STATS_TYPE_INVALID = -1,
 	STATS_TYPE_LAST,
 	STATS_TYPE_HIGHEST,
 	STATS_TYPE_LOWEST,
diff --git a/lib/stats.c b/lib/stats.c
index e8df3a5b5..b48d429b9 100644
--- a/lib/stats.c
+++ b/lib/stats.c
@@ -70,7 +70,7 @@ enum stats_metric stats_lookup_metric(const char *str)
 			return d->metric;
 	}
 
-	return -1;
+	return STATS_METRIC_INVALID;
 }
 
 enum stats_type stats_lookup_type(const char *str)
@@ -82,7 +82,7 @@ enum stats_type stats_lookup_type(const char *str)
 			return d->type;
 	}
 
-	return -1;
+	return STATS_TYPE_INVALID;
 }
 
 int stats_init(struct stats *s, int buckets, int warmup)