From 1fc9d8ce8f36f37fcf2dc321de54fc277e90a099 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ji=C5=99=C3=AD=20=C4=8Ctvrtka?=
 <62988319+JiriCtvrtka@users.noreply.github.com>
Date: Fri, 28 Jul 2023 10:31:49 +0200
Subject: [PATCH] PMM-11686 Query namespace mapping. (#141)

* PMM-11686 Add extended print of errors.

* PMM-11686 Error log level.

* PMM-11686 Logger.
---
 cmd/postgres_exporter/namespace.go | 2 +-
 cmd/postgres_exporter/server.go    | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/cmd/postgres_exporter/namespace.go b/cmd/postgres_exporter/namespace.go
index ab1e74ea..4755624a 100644
--- a/cmd/postgres_exporter/namespace.go
+++ b/cmd/postgres_exporter/namespace.go
@@ -233,7 +233,7 @@ func queryNamespaceMappings(ch chan<- prometheus.Metric, server *Server) map[str
 		// Serious error - a namespace disappeared
 		if err != nil {
 			namespaceErrors[namespace] = err
-			level.Info(logger).Log("err", err)
+			level.Error(logger).Log("err", err)
 		}
 		// Non-serious errors - likely version or parsing problems.
 		if len(nonFatalErrors) > 0 {
diff --git a/cmd/postgres_exporter/server.go b/cmd/postgres_exporter/server.go
index 8747dffa..f4f8c3d0 100644
--- a/cmd/postgres_exporter/server.go
+++ b/cmd/postgres_exporter/server.go
@@ -126,6 +126,10 @@ func (s *Server) Scrape(ch chan<- prometheus.Metric, disableSettingsMetrics bool
 	errMap := queryNamespaceMappings(ch, s)
 	if len(errMap) > 0 {
 		err = fmt.Errorf("queryNamespaceMappings returned %d errors", len(errMap))
+		level.Error(logger).Log("msg", "NAMESPACE ERRORS FOUND")
+		for namespace, err := range errMap {
+			level.Error(logger).Log("namespace", namespace, "msg", err)
+		}
 	}
 
 	return err