<fix>[plugin-premium]: GPU/VM page keeps loading when shutting down or encountering errors in Zaku cluster.

Resolves: ZSTAC-80202
Change-Id: I7778676171646874706164777869707279776172

Author: chao.he

header/src/main/java/org/zstack/header/zql/BeforeCallZWatchExtensionPoint.java

@@ -0,0 +1,23 @@
+package org.zstack.header.zql;
+
+import java.util.List;
+
+/**
+ * BeforeZQLReturnWithExtensionPoint is an extension point that allows plugins
+ * to perform custom operations before calling zwatch.
+ */
+public interface BeforeCallZWatchExtensionPoint {
+    /**
+     * Check if this extension supports the given VO class
+     * @param voClass the VO class to check
+     * @return true if this extension supports the VO class, false otherwise
+     */
+    boolean supports(Class<?> voClass);
+
+    /**
+     * Perform custom operations before calling ZWatch, for example: health-check
+     * @param voClass the VO class type
+     * @param uuids the list of resource UUIDs to process
+     */
+    void beforeCallZWatch(Class<?> voClass, List<String> uuids);
+}