From ccad651a61be755140b47dd53077f3ae57aa9ec1 Mon Sep 17 00:00:00 2001
From: Aliaksandr Valialkin <valyala@victoriametrics.com>
Date: Tue, 13 Sep 2022 19:36:47 +0300
Subject: [PATCH] lib/promscrape/discovery/kubernetes: add more context on
 WatchEvent parse error

This should improve debugging issues with Kubernetes API server
---
 lib/promscrape/discovery/kubernetes/api_watcher.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/promscrape/discovery/kubernetes/api_watcher.go b/lib/promscrape/discovery/kubernetes/api_watcher.go
index ad6ba53a2..973b10a51 100644
--- a/lib/promscrape/discovery/kubernetes/api_watcher.go
+++ b/lib/promscrape/discovery/kubernetes/api_watcher.go
@@ -702,7 +702,7 @@ func (uw *urlWatcher) readObjectUpdateStream(r io.Reader) error {
 	var we WatchEvent
 	for {
 		if err := d.Decode(&we); err != nil {
-			return err
+			return fmt.Errorf("cannot parse WatchEvent json response: %s", err)
 		}
 		switch we.Type {
 		case "ADDED", "MODIFIED":