Added function ApplyMemoryToMachine for virtualbox.

commit e52df20b9010ebac266e2b593628ea1876a578f9
Author: Mattias Holmqvist <mattias.holmqvist@gmail.com>
Date:   Sun Oct 23 23:59:25 2011 +0200

    Added function ApplyMemoryToMachine for virtualbox.

commit a43e189b306fddbdc5ee5930355f20d90d148854
Merge: 3f6de26 041360e
Author: Mattias Holmqvist <mattias.holmqvist@gmail.com>
Date:   Sun Oct 23 23:26:42 2011 +0200

    Merge branch 'master' of https://github.com/jclouds/jclouds into functionalize

    Conflicts:
    	sandbox-apis/virtualbox/src/main/java/org/jclouds/virtualbox/functions/AttachNATRedirectRuleToMachine.java

commit 3f6de265d7342676fdeab99badd31f31cb43aadc
Author: Mattias Holmqvist <mattias.holmqvist@gmail.com>
Date:   Sun Oct 23 23:23:49 2011 +0200

    Added AttachNATRedirectRuleToMachine to virtualbox.

sandbox-apis/virtualbox/src/main/java/org/jclouds/virtualbox/functions/ApplyMemoryToMachine.java

@@ -0,0 +1,44 @@
+/*
+ * 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.virtualbox.functions;
+
+import com.google.common.base.Function;
+import org.virtualbox_4_1.IMachine;
+
+import javax.annotation.Nullable;
+
+/**
+ * @author Mattias Holmqvist
+ */
+public class ApplyMemoryToMachine implements Function<IMachine, Object> {
+
+   private long memorySize;
+
+   public ApplyMemoryToMachine(long memorySize) {
+      this.memorySize = memorySize;
+   }
+
+   @Override
+   public Object apply(@Nullable IMachine machine) {
+      machine.setMemorySize(memorySize);
+      machine.saveSettings();
+      return null;
+   }
+}

sandbox-apis/virtualbox/src/main/java/org/jclouds/virtualbox/functions/IsoToIMachine.java

@@ -105,16 +105,7 @@ public class IsoToIMachine implements Function<String, IMachine> {
       String workingDir = System.getProperty(VIRTUALBOX_WORKINGDIR, defaultWorkingDir);
 
       // Change RAM
-      lockMachineAndApply(manager, Write, vmName, new Function<IMachine, Void>() {
-
-         @Override
-         public Void apply(IMachine machine) {
-            machine.setMemorySize(1024l);
-            machine.saveSettings();
-            return null;
-         }
-
-      });
+      ensureMachineHasMemory(vmName, 1024l);
 
       // IDE Controller
       ensureMachineHasIDEControllerNamed(vmName, controllerIDE);
@@ -128,12 +119,8 @@ public class IsoToIMachine implements Function<String, IMachine> {
          new File(adminDiskPath).delete();
       }
 
-      // Create hard disk
-      IMedium hardDisk = new CreateMediumIfNotAlreadyExists(manager, diskFormat, true).apply(adminDiskPath);
-
       // Attach hard disk to machine
-      lockMachineAndApply(manager, Write, vmName,
-              new AttachHardDiskToMachineIfNotAlreadyAttached(controllerIDE, hardDisk, manager));
+      ensureMachineHasHardDiskAttached(vmName, adminDiskPath);
 
       // NAT
       ensureNATNetworkingIsAppliedToMachine(vmName);
@@ -197,6 +184,17 @@ public class IsoToIMachine implements Function<String, IMachine> {
       return vm;
    }
 
+   private void ensureMachineHasHardDiskAttached(String vmName, String path) {
+      // Create hard disk
+      IMedium hardDisk = new CreateMediumIfNotAlreadyExists(manager, diskFormat, true).apply(path);
+      lockMachineAndApply(manager, Write, vmName,
+              new AttachHardDiskToMachineIfNotAlreadyAttached(controllerIDE, hardDisk, manager));
+   }
+
+   private void ensureMachineHasMemory(String vmName, final long memorySize) {
+      lockMachineAndApply(manager, Write, vmName, new ApplyMemoryToMachine(memorySize));
+   }
+
    private void ensureNATNetworkingIsAppliedToMachine(String vmName) {
       lockMachineAndApply(manager, Write, vmName, new AttachNATRedirectRuleToMachine(0l));
    }

sandbox-apis/virtualbox/src/test/java/org/jclouds/virtualbox/functions/ApplyMemoryToMachineTest.java

@@ -0,0 +1,68 @@
+/*
+ * 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.virtualbox.functions;
+
+import org.testng.annotations.Test;
+import org.virtualbox_4_1.IMachine;
+import org.virtualbox_4_1.VBoxException;
+
+import static org.easymock.classextension.EasyMock.*;
+
+/**
+ * @author Mattias Holmqvist
+ */
+@Test(groups = "unit", testName = "ApplyMemoryToMachineTest")
+public class ApplyMemoryToMachineTest {
+
+   @Test
+   public void testSetRAMSizeSuccessful() throws Exception {
+      long memorySize = 1024l;
+      IMachine machine = createMock(IMachine.class);
+
+      machine.setMemorySize(memorySize);
+      machine.saveSettings();
+
+      replay(machine);
+
+      new ApplyMemoryToMachine(memorySize).apply(machine);
+
+      verify(machine);
+   }
+
+   @Test(expectedExceptions = VBoxException.class)
+   public void testRethrowInvalidRamSizeError() throws Exception {
+      // Mainly here for documentation purposes
+      final String error = "VirtualBox error: Invalid RAM size: " +
+              "3567587327 MB (must be in range [4, 2097152] MB) (0x80070057)";
+
+      long memorySize = 1024l;
+      IMachine machine = createMock(IMachine.class);
+
+      VBoxException invalidRamSizeException = new VBoxException(createNiceMock(Throwable.class), error);
+      machine.setMemorySize(memorySize);
+      expectLastCall().andThrow(invalidRamSizeException);
+      machine.saveSettings();
+
+      replay(machine);
+
+      new ApplyMemoryToMachine(memorySize).apply(machine);
+   }
+
+}