[incubator-uniffle] 01/01: fix incorrect metric grpc_server_connection_number

[xianjingfeng]

This is an automated email from the ASF dual-hosted git repository.

xianjingfeng pushed a commit to branch issue_933
in repository https://gitbox.apache.org/repos/asf/incubator-uniffle.git

commit 18c07b8dd389aa1d5e9e3e4bdab8f30dc492675a
Author: xianjingfeng <xianjingfeng...@gmail.com>
AuthorDate: Wed Jun 7 11:00:58 2023 +0800

    fix incorrect metric grpc_server_connection_number
---
 .../apache/uniffle/common/rpc/MonitoringServerTransportFilter.java    | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git 
a/common/src/main/java/org/apache/uniffle/common/rpc/MonitoringServerTransportFilter.java
 
b/common/src/main/java/org/apache/uniffle/common/rpc/MonitoringServerTransportFilter.java
index 2c29dd27..ef687ec4 100644
--- 
a/common/src/main/java/org/apache/uniffle/common/rpc/MonitoringServerTransportFilter.java
+++ 
b/common/src/main/java/org/apache/uniffle/common/rpc/MonitoringServerTransportFilter.java
@@ -37,7 +37,9 @@ public class MonitoringServerTransportFilter extends 
ServerTransportFilter {
   }
 
   public void transportTerminated(Attributes transportAttrs) {
-    grpcMetrics.decGauge(GRPC_SERVER_CONNECTION_NUMBER_KEY);
+    if (transportAttrs != null) {
+      grpcMetrics.decGauge(GRPC_SERVER_CONNECTION_NUMBER_KEY);
+    }
     super.transportTerminated(transportAttrs);
   }
 }