feat: add gb32960 session diagnostics

modules/apps/gb32960-ingest-app/src/main/java/com/lingniu/ingest/gb32960app/actuator/Gb32960SessionsEndpoint.java

@@ -0,0 +1,27 @@
+package com.lingniu.ingest.gb32960app.actuator;
+
+import com.lingniu.ingest.protocol.gb32960.inbound.Gb32960ConnectionDiagnostics;
+import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
+import org.springframework.boot.actuate.endpoint.annotation.ReadOperation;
+import org.springframework.stereotype.Component;
+
+import java.util.Map;
+
+@Component
+@Endpoint(id = "gb32960-sessions")
+public class Gb32960SessionsEndpoint {
+
+    private final Gb32960ConnectionDiagnostics diagnostics;
+
+    public Gb32960SessionsEndpoint(Gb32960ConnectionDiagnostics diagnostics) {
+        this.diagnostics = diagnostics;
+    }
+
+    @ReadOperation
+    public Map<String, Object> sessions() {
+        var sessions = diagnostics.activeSessions();
+        return Map.of(
+                "activeCount", sessions.size(),
+                "sessions", sessions);
+    }
+}

modules/apps/gb32960-ingest-app/src/main/resources/application.yml

@@ -119,7 +119,7 @@ management:
   endpoints:
     web:
       exposure:
-        include: health,info,metrics,prometheus,env
+        include: health,info,metrics,prometheus,env,gb32960-sessions
   health:
     redis:
       enabled: ${MANAGEMENT_HEALTH_REDIS_ENABLED:false}