use iterator

Author: cijothomas

opentelemetry-proto/src/transform/metrics.rs

@@ -250,11 +250,11 @@ pub mod tonic {
                         zero_count: dp.zero_count(),
                         positive: Some(TonicBuckets {
                             offset: dp.positive_bucket().offset(),
-                            bucket_counts: dp.positive_bucket().counts().to_vec(),
+                            bucket_counts: dp.positive_bucket().counts().collect(),
                         }),
                         negative: Some(TonicBuckets {
                             offset: dp.negative_bucket().offset(),
-                            bucket_counts: dp.negative_bucket().counts().to_vec(),
+                            bucket_counts: dp.negative_bucket().counts().collect(),
                         }),
                         flags: TonicDataPointFlags::default() as u32,
                         exemplars: dp.exemplars().map(Into::into).collect(),

opentelemetry-sdk/src/metrics/data/mod.rs

@@ -562,9 +562,9 @@ impl ExponentialBucket {
         self.offset
     }
 
-    /// Returns a reference to the counts vec.
-    pub fn counts(&self) -> &[u64] {
-        &self.counts
+    /// Returns an iterator over the counts.
+    pub fn counts(&self) -> impl Iterator<Item = u64> + '_ {
+        self.counts.iter().copied()
     }
 }