Fix VMWare leftovers when deleting VM without root disk (apache#9735)

Author: gpordeus

core/src/main/java/com/cloud/agent/api/CleanupVMCommand.java

@@ -0,0 +1,46 @@
+//
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+//
+
+package com.cloud.agent.api;
+
+/**
+ * This command will destroy a leftover VM during the expunge process if it wasn't destroyed before.
+ *
+ */
+public class CleanupVMCommand extends Command {
+    String vmName;
+    boolean executeInSequence;
+
+    public CleanupVMCommand(String vmName) {
+        this(vmName, false);
+    }
+    public CleanupVMCommand(String vmName, boolean executeInSequence) {
+        this.vmName = vmName;
+        this.executeInSequence = executeInSequence;
+    }
+
+    @Override
+    public boolean executeInSequence() {
+        return executeInSequence;
+    }
+
+    public String getVmName() {
+        return vmName;
+    }
+}

plugins/hypervisors/vmware/src/main/java/com/cloud/hypervisor/guru/VMwareGuru.java

@@ -27,6 +27,7 @@
 import java.util.Map;
 import java.util.UUID;
 
+import com.cloud.agent.api.CleanupVMCommand;
 import javax.inject.Inject;
 
 import com.cloud.agent.api.to.NfsTO;
@@ -370,6 +371,13 @@ private String resolveNameInGuid(String guid) {
         return tokens[0] + "@" + vCenterIp;
     }
 
+    @Override public List<Command> finalizeExpunge(VirtualMachine vm) {
+        List<Command> commands = new ArrayList<Command>();
+        final CleanupVMCommand cleanupVMCommand = new CleanupVMCommand(vm.getInstanceName(), true);
+        commands.add(cleanupVMCommand);
+        return commands;
+    }
+
     @Override public List<Command> finalizeExpungeNics(VirtualMachine vm, List<NicProfile> nics) {
         List<Command> commands = new ArrayList<Command>();
         List<NicVO> nicVOs = nicDao.listByVmId(vm.getId());

plugins/hypervisors/vmware/src/main/java/com/cloud/hypervisor/vmware/resource/VmwareResource.java

@@ -45,6 +45,7 @@
 import java.util.UUID;
 import java.util.stream.Collectors;
 
+import com.cloud.agent.api.CleanupVMCommand;
 import javax.naming.ConfigurationException;
 import javax.xml.datatype.XMLGregorianCalendar;
 
@@ -583,6 +584,8 @@ public Answer executeRequest(Command cmd) {
                 return execute((ResizeVolumeCommand) cmd);
             } else if (clz == UnregisterVMCommand.class) {
                 return execute((UnregisterVMCommand) cmd);
+            } else if (clz == CleanupVMCommand.class) {
+                return execute((CleanupVMCommand) cmd);
             } else if (cmd instanceof StorageSubSystemCommand) {
                 checkStorageProcessorAndHandlerNfsVersionAttribute((StorageSubSystemCommand) cmd);
                 return storageHandler.handleStorageCommands((StorageSubSystemCommand) cmd);
@@ -5796,6 +5799,26 @@ protected Answer execute(PvlanSetupCommand cmd) {
         return new Answer(cmd, true, "success");
     }
 
+    protected Answer execute(CleanupVMCommand cmd) {
+        VmwareContext context = getServiceContext();
+        VmwareHypervisorHost hyperHost = getHyperHost(context);
+
+        try {
+            VirtualMachineMO vmMo = hyperHost.findVmOnHyperHost(cmd.getVmName());
+            if (vmMo == null) {
+                String msg = String.format("VM [%s] not found on vCenter, cleanup not needed.", cmd.getVmName());
+                s_logger.debug(msg);
+                return new Answer(cmd, true, msg);
+            }
+            vmMo.destroy();
+            String msg = String.format("VM [%s] remnants on vCenter cleaned up.", cmd.getVmName());
+            s_logger.debug(msg);
+            return new Answer(cmd, true, msg);
+        } catch (Exception e) {
+            return new Answer(cmd, false, createLogMessageException(e, cmd));
+        }
+    }
+
     protected Answer execute(UnregisterVMCommand cmd) {
         VmwareContext context = getServiceContext();
         VmwareHypervisorHost hyperHost = getHyperHost(context);