Do not report per_link metric without per-link data

wyfo · wyfo · commit e01faabbf8db · 2025-12-09T11:03:11.000+01:00
diff --git a/commons/zenoh-stats/src/family.rs b/commons/zenoh-stats/src/family.rs
@@ -301,7 +301,12 @@ impl<
                 }
             }
         }
-        if COLLECT_PER_LINK.get() {
+        if COLLECT_PER_LINK.get()
+            && collected
+                .values()
+                .flat_map(|(_, transports)| transports)
+                .any(|t| !t.links.is_empty())
+        {
             let per_link = format!("{name}_per_link", name = self.name);
             let mut metric_encoder = encoder.encode_descriptor(
                 &per_link,

Original file line number	Diff line number	Diff line change
`@@ -301,7 +301,12 @@ impl<`
`301`	`301`	`}`
`302`	`302`	`}`
`303`	`303`	`}`
`304`		`- if COLLECT_PER_LINK.get() {`
	`304`	`+ if COLLECT_PER_LINK.get()`
	`305`	`+ && collected`
	`306`	`+ .values()`
	`307`	`+ .flat_map(\|(_, transports)\| transports)`
	`308`	`+ .any(\|t\| !t.links.is_empty())`
	`309`	`+ {`
`305`	`310`	`let per_link = format!("{name}_per_link", name = self.name);`
`306`	`311`	`let mut metric_encoder = encoder.encode_descriptor(`
`307`	`312`	`&per_link,`