From 7419db6fc41d0065b2ed97651f140160c57e4905 Mon Sep 17 00:00:00 2001
From: backstraw <polgant1015@gmail.com>
Date: Wed, 25 Jun 2025 17:29:22 +0900
Subject: [PATCH] fix: prevent NPE  in AlertType

---
 .../src/main/java/com/dianping/cat/alarm/spi/AlertType.java | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/cat-alarm/src/main/java/com/dianping/cat/alarm/spi/AlertType.java b/cat-alarm/src/main/java/com/dianping/cat/alarm/spi/AlertType.java
index 1dbcd68394..284a6f65c3 100644
--- a/cat-alarm/src/main/java/com/dianping/cat/alarm/spi/AlertType.java
+++ b/cat-alarm/src/main/java/com/dianping/cat/alarm/spi/AlertType.java
@@ -28,7 +28,9 @@ public enum AlertType {
 
 	Transaction("Transaction", "Transaction告警"),
 
-	Event("Event", "Event告警");
+	Event("Event", "Event告警"),
+
+	Unknown("Unknown", "Unknown告警");
 
 	private String m_name;
 
@@ -45,7 +47,7 @@ public static AlertType getTypeByName(String name) {
 				return type;
 			}
 		}
-		return null;
+		return AlertType.Unknown;
 	}
 
 	public String getName() {