From 14ed1f8cd23062d57f0d1db85d3f0a11fbcab813 Mon Sep 17 00:00:00 2001
From: Jeanette Tan <jeanette.tan@grafana.com>
Date: Fri, 23 Dec 2022 19:53:04 +0800
Subject: [PATCH] Add generic interface for float/histogram sample pair
 (bumping go version - experimental)

Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com>
---
 go.mod                   | 2 +-
 model/value.go           | 5 +++++
 model/value_float.go     | 4 ++++
 model/value_histogram.go | 4 ++++
 4 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/go.mod b/go.mod
index f3914717..04c820ec 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/prometheus/common
 
-go 1.17
+go 1.18
 
 require (
 	github.com/go-kit/log v0.2.1
diff --git a/model/value.go b/model/value.go
index 15a87570..387ce9e9 100644
--- a/model/value.go
+++ b/model/value.go
@@ -379,3 +379,8 @@ func (mat Matrix) String() string {
 
 	return strings.Join(strs, "\n")
 }
+
+type GenericSamplePair interface {
+	SamplePair | SampleHistogramPair
+	GetTimestamp() Time
+}
diff --git a/model/value_float.go b/model/value_float.go
index 9266fb98..679af22b 100644
--- a/model/value_float.go
+++ b/model/value_float.go
@@ -99,3 +99,7 @@ func (s *SamplePair) Equal(o *SamplePair) bool {
 func (s SamplePair) String() string {
 	return fmt.Sprintf("%s @[%s]", s.Value, s.Timestamp)
 }
+
+func (s SamplePair) GetTimestamp() Time {
+	return s.Timestamp
+}
diff --git a/model/value_histogram.go b/model/value_histogram.go
index a4be0bca..9498ded9 100644
--- a/model/value_histogram.go
+++ b/model/value_histogram.go
@@ -169,3 +169,7 @@ func (s SampleHistogramPair) String() string {
 func (s *SampleHistogramPair) Equal(o *SampleHistogramPair) bool {
 	return s == o || (s.Histogram.Equal(&o.Histogram) && s.Timestamp.Equal(o.Timestamp))
 }
+
+func (s SampleHistogramPair) GetTimestamp() Time {
+	return s.Timestamp
+}