Defined new predicate to check if a VM is expunged

apis/cloudstack/src/main/java/org/jclouds/cloudstack/predicates/VirtualMachineExpunged.java

@@ -0,0 +1,60 @@
+/**
+ * Licensed to jclouds, Inc. (jclouds) under one or more
+ * contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  jclouds 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 org.jclouds.cloudstack.predicates;
+
+import com.google.common.base.Predicate;
+import com.google.inject.Inject;
+import org.jclouds.cloudstack.CloudStackClient;
+import org.jclouds.cloudstack.domain.VirtualMachine;
+import org.jclouds.cloudstack.domain.VirtualMachine.State;
+import org.jclouds.logging.Logger;
+
+import javax.annotation.Resource;
+import javax.inject.Singleton;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * 
+ * Tests to see if a virtualMachine is expunged from the system
+ * 
+ * @author Adrian Cole
+ */
+@Singleton
+public class VirtualMachineExpunged implements Predicate<VirtualMachine> {
+
+   private final CloudStackClient client;
+
+   @Resource
+   protected Logger logger = Logger.NULL;
+
+   @Inject
+   public VirtualMachineExpunged(CloudStackClient client) {
+      this.client = client;
+   }
+
+   public boolean apply(VirtualMachine virtualMachine) {
+      logger.trace("looking for state on virtualMachine %s", checkNotNull(virtualMachine, "virtualMachine"));
+      return refresh(virtualMachine) == null;
+   }
+
+   private VirtualMachine refresh(VirtualMachine virtualMachine) {
+      return client.getVirtualMachineClient().getVirtualMachine(virtualMachine.getId());
+   }
+}