feat: add stdout and filesystem notification channels (#2925)

* feat: add filesystem and stdout notification channels

* configure through env vars

* compile

* feat: add compact option for debug notification channels

* fix channel mock generation

* avoid sensitive information in error message

Co-authored-by: Livio Amstutz <livio.a@gmail.com>

* add review improvements

Co-authored-by: Livio Amstutz <livio.a@gmail.com>

internal/notification/channels/log/channel.go

@@ -0,0 +1,29 @@
+package log
+
+import (
+	"fmt"
+
+	"github.com/k3a/html2text"
+
+	"github.com/caos/logging"
+	"github.com/caos/zitadel/internal/notification/channels"
+)
+
+func InitStdoutChannel(config LogConfig) channels.NotificationChannel {
+
+	logging.Log("NOTIF-D0164").Debug("successfully initialized stdout email and sms channel")
+
+	return channels.HandleMessageFunc(func(message channels.Message) error {
+
+		content := message.GetContent()
+		if config.Compact {
+			content = html2text.HTML2Text(content)
+		}
+
+		logging.Log("NOTIF-c73ba").WithFields(map[string]interface{}{
+			"type":    fmt.Sprintf("%T", message),
+			"content": content,
+		}).Info("handling notification message")
+		return nil
+	})
+}

internal/notification/channels/log/config.go

@@ -0,0 +1,6 @@
+package log
+
+type LogConfig struct {
+	Enabled bool
+	Compact bool
+}