Chore: sanitize values before being logged from request headers (#49245)

* Chore: sanitize values being logged directly from request headers

pkg/middleware/logger_test.go

@@ -0,0 +1,57 @@
+package middleware
+
+import (
+	"testing"
+
+	"github.com/grafana/grafana/pkg/infra/log"
+	"github.com/grafana/grafana/pkg/models"
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_sanitizeURL(t *testing.T) {
+	type args struct {
+		ctx *models.ReqContext
+		s   string
+	}
+	tests := []struct {
+		name string
+		args args
+		want string
+	}{
+		{
+			name: "Receiving empty string should return it",
+			args: args{
+				ctx: &models.ReqContext{
+					Logger: log.New("test.logger"),
+				},
+				s: "",
+			},
+			want: "",
+		},
+		{
+			name: "Receiving valid URL string should return it parsed",
+			args: args{
+				ctx: &models.ReqContext{
+					Logger: log.New("test.logger"),
+				},
+				s: "https://grafana.com/",
+			},
+			want: "https://grafana.com/",
+		},
+		{
+			name: "Receiving invalid URL string should return empty string",
+			args: args{
+				ctx: &models.ReqContext{
+					Logger: log.New("test.logger"),
+				},
+				s: "this is not a valid URL",
+			},
+			want: "",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			assert.Equalf(t, tt.want, sanitizeURL(tt.args.ctx, tt.args.s), "sanitizeURL(%v, %v)", tt.args.ctx, tt.args.s)
+		})
+	}
+}