TUN-9371: Add logging format as JSON

Closes TUN-9371

logger/console_test.go

@@ -0,0 +1,33 @@
+package logger
+
+import (
+	"bytes"
+	"strings"
+	"testing"
+
+	"github.com/rs/zerolog"
+)
+
+func TestConsoleLoggerDuplicateKeys(t *testing.T) {
+	r := bytes.NewBuffer(make([]byte, 500))
+	logger := zerolog.New(&consoleWriter{out: r}).With().Timestamp().Logger()
+	logger.Debug().Str("test", "1234").Int("number", 45).Str("test", "5678").Msg("log message")
+
+	event, err := r.ReadString('\n')
+	if err != nil {
+		t.Error(err)
+	}
+
+	if !strings.Contains(event, "\"test\":\"5678\"") {
+		t.Errorf("log event missing key 'test': %s", event)
+	}
+	if !strings.Contains(event, "\"number\":45") {
+		t.Errorf("log event missing key 'number': %s", event)
+	}
+	if !strings.Contains(event, "\"time\":") {
+		t.Errorf("log event missing key 'time': %s", event)
+	}
+	if !strings.Contains(event, "\"level\":\"debug\"") {
+		t.Errorf("log event missing key 'level': %s", event)
+	}
+}