From 7966aed1e008936ea0fad6c63bd72461cdc55648 Mon Sep 17 00:00:00 2001
From: Mihai Parparita <mihai@tailscale.com>
Date: Fri, 6 May 2022 09:52:48 -0700
Subject: [PATCH] util/clientmetric: add test hooks and ResetLastDelta function

Necessary to force flushing of client metrics more aggressively in
dev/test mode.

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
---
 util/clientmetric/clientmetric.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/util/clientmetric/clientmetric.go b/util/clientmetric/clientmetric.go
index e31f26aa2..a516ed5c1 100644
--- a/util/clientmetric/clientmetric.go
+++ b/util/clientmetric/clientmetric.go
@@ -255,6 +255,10 @@ func EncodeLogTailMetricsDelta() string {
 	return enc.buf.String()
 }
 
+func ResetLastDeltaForTest() {
+	lastDelta = time.Time{}
+}
+
 var deltaPool = &sync.Pool{
 	New: func() any {
 		return new(deltaEncBuf)