使用VMware VSphere WebService SDK进行开发 （七）——获取数据中心、集群、主机、虚拟机的目录结构

在实际应用中，需要显示出数据中心（Datacenter）、集群（ClusterComputeResource）、主机（HostSystem）、虚拟机(VirtualMachine)之间的目录关系。这里忽略VAPP以及APP。

正所谓无图无真相，先展示一张vSphere Client上的截图，以便形象的描述本文所要呈现的内容。

左边的目录树形象的展示了数据中心（Datacenter）、集群（ClusterComputeResource）、主机（HostSystem）、虚拟机(VirtualMachine)之间的目录关系。但是如何通过vSphere Webservice SDK进行获取相应的信息呢?

首先罗列本文所要展示的几个方法：

首先根据主机名获取虚拟机的名称列表，这个比较简单，因为HostSystem有一个属性就是vm,关系一目了然。

根据主机名称遍历，获取匹配主机名称的记录，根据vm的属性名获取虚拟机的ArrayOfManagedObjectReference对象，然后通过：

List ManagedObjectReference vmTempList = ((ArrayOfManagedObjectReference)dp.getVal()).getManagedObjectReference();

获取每一个虚拟机的对象，最后根据虚拟机对象获得相应的名称。

同样，根据集群名获取主机名也是相同的。

下面展示出关键代码（所涉及的调用的方法如果未展示出来，可参考前面6篇同系列的博文，在其中会找到，如果真是本人疏忽遗漏，可在下方评论，我会尽快补上）：

 private static List String getNameListByName(String paraName, String paraObject, String paraProperty) throws Exception

 List String list = new ArrayList String 

 RetrieveResult props = getRetrieveResultObjectWithProperty(paraObject, paraProperty);

 List ManagedObjectReference vmList = null;

 if (props != null)

 Boolean flag = false;

 if (paraProperty.compareToIgnoreCase("name") 0)

 for (ObjectContent oc : props.getObjects())

 if (flag == true)

 break;

 List ManagedObjectReference vmTempList = null;

 String path = null;

 List DynamicProperty dps = oc.getPropSet();

 if (dps != null)

 for (DynamicProperty dp : dps)

 path = dp.getName();

 if (path.equalsIgnoreCase(paraProperty))

 vmTempList = ((ArrayOfManagedObjectReference)dp.getVal()).getManagedObjectReference();

 if (path.equalsIgnoreCase("name"))

 String value = (String) dp.getVal();

 if (value.equals(paraName))

 flag = true;

 vmList = vmTempList;

 break;

 else

 for (ObjectContent oc : props.getObjects())

 if (flag == true)

 break;

 String path = null;

 List DynamicProperty dps = oc.getPropSet();

 if (dps != null)

 for (DynamicProperty dp : dps)

 path = dp.getName();

 if (path.equalsIgnoreCase("name"))

 String value = (String) dp.getVal();

 if (value.equals(paraName))

 flag = true;

 if (path.equalsIgnoreCase(paraProperty))

 List ManagedObjectReference vmTempList = ((ArrayOfManagedObjectReference)dp.getVal()).getManagedObjectReference();

 if (flag == true)

 vmList = vmTempList;

 break;

 if(vmList != null)

 for(ManagedObjectReference mor:vmList)

 String objectName = getObjectName(mor);

 if(objectName != null)

 list.add(objectName);

 return list;

 public static List String getVmNameListByHostName(String hostName) throws Exception

 return getNameListByName(hostName,"HostSystem","vm");

 public static List String getHostNameListByClusterName(String clusterName) throws Exception

 return getNameListByName(clusterName,"ComputeResource","host");

 }

在集群(ComputeResource)中没有像在HostSystem中有类似vm的虚拟机属性，但是我们可以根据集群获得主机，主机获得虚拟机的方式，获得一个虚拟机的列表，代码如下：

 public static List String getVmNameListByClusterName(String clusterName) throws Exception

 List String ansList = new ArrayList String 

 List String hostList = getNameListByName(clusterName,"ComputeResource","host");

 if(hostList != null)

 for(String hostName : hostList)

 List String vmList = null;

 if(hostName != null)

 vmList = getVmNameListByHostName(hostName);

 if(vmList != null)

 for(String vmName : vmList)

 if(vmName != null)

 ansList.add(vmName);

 return ansList;

 }

接下去，通过数据中心（Datacenter）获取集群、主机、虚拟机的列表就比较绕了。首先看一下Datacenter的api：

我们可以发现其中有hostFolder,vmFolder的属性，hostFolder对应的是集群和主机，而vmFolder对应的是虚拟机，所以这里我们可以先通过数据中心的名称获取其对应的hostFolder以及vmFolder的对象，然后通过遍历这些对象多去相应的关键属性。对于如何遍历对象，相信看过我前面几篇博文的朋友应该了解了，关键理解这幅图：

好了，直接上代码，希望各位朋友能够很快理解。

 private static TraversalSpec getHostFolderTraversalSpec()

 SelectionSpec ss = new SelectionSpec();

 ss.setName("VisitFolders");

 TraversalSpec computeResourceToHostSystem = new TraversalSpec();

 computeResourceToHostSystem.setName("computeResourceToHostSystem");

 computeResourceToHostSystem.setType("ComputeResource");

 computeResourceToHostSystem.setPath("host");

 computeResourceToHostSystem.setSkip(false);

 computeResourceToHostSystem.getSelectSet().add(ss);

 TraversalSpec hostFolderToComputeResource = new TraversalSpec();

 hostFolderToComputeResource.setName("hostFolderToComputeResource");

 hostFolderToComputeResource.setType("Folder");

 hostFolderToComputeResource.setPath("childEntity");

 hostFolderToComputeResource.setSkip(false);

 hostFolderToComputeResource.getSelectSet().add(ss);

 TraversalSpec traversalSpec = new TraversalSpec();

 traversalSpec.setName("VisitFolders");

 traversalSpec.setType("Folder");

 traversalSpec.setPath("childEntity");

 traversalSpec.setSkip(false);

 List SelectionSpec sSpecArr = new ArrayList SelectionSpec 

 sSpecArr.add(ss);

 sSpecArr.add(hostFolderToComputeResource);

 sSpecArr.add(computeResourceToHostSystem);

 traversalSpec.getSelectSet().addAll(sSpecArr);

 return traversalSpec;

 private static TraversalSpec getHostFolderOfComputeResourceTraversalSpec()

 SelectionSpec ss = new SelectionSpec();

 ss.setName("VisitFolders");

 TraversalSpec hostFolderToComputeResource = new TraversalSpec();

 hostFolderToComputeResource.setName("hostFolderToComputeResource");

 hostFolderToComputeResource.setType("Folder");

 hostFolderToComputeResource.setPath("childEntity");

 hostFolderToComputeResource.setSkip(false);

 hostFolderToComputeResource.getSelectSet().add(ss);

 TraversalSpec traversalSpec = new TraversalSpec();

 traversalSpec.setName("VisitFolders");

 traversalSpec.setType("Folder");

 traversalSpec.setPath("childEntity");

 traversalSpec.setSkip(false);

 List SelectionSpec sSpecArr = new ArrayList SelectionSpec 

 sSpecArr.add(ss);

 sSpecArr.add(hostFolderToComputeResource);

 traversalSpec.getSelectSet().addAll(sSpecArr);

 return traversalSpec;

 private static TraversalSpec getVmFolderTraversalSpec()

 TraversalSpec vAppToVM = new TraversalSpec();

 vAppToVM.setName("vAppToVM");

 vAppToVM.setType("VirtualApp");

 vAppToVM.setPath("vm");

 TraversalSpec vAppToVApp = new TraversalSpec();

 vAppToVApp.setName("vAppToVApp");

 vAppToVApp.setType("VirtualApp");

 vAppToVApp.setPath("resourcePool");

 SelectionSpec vAppRecursion = new SelectionSpec();

 vAppRecursion.setName("vAppToVApp");

 SelectionSpec vmInVApp = new SelectionSpec();

 vmInVApp.setName("vAppToVM");

 List SelectionSpec vAppToVMSS = new ArrayList SelectionSpec 

 vAppToVMSS.add(vAppRecursion);

 vAppToVMSS.add(vmInVApp);

 vAppToVApp.getSelectSet().addAll(vAppToVMSS);

 SelectionSpec sSpec = new SelectionSpec();

 sSpec.setName("VisitFolders");

 TraversalSpec traversalSpec = new TraversalSpec();

 traversalSpec.setName("VisitFolders");

 traversalSpec.setType("Folder");

 traversalSpec.setPath("childEntity");

 traversalSpec.setSkip(false);

 List SelectionSpec sSpecArr = new ArrayList SelectionSpec 

 sSpecArr.add(sSpec);

 sSpecArr.add(vAppToVM);

 sSpecArr.add(vAppToVApp);

 traversalSpec.getSelectSet().addAll(sSpecArr);

 return traversalSpec;

 private static ManagedObjectReference getHostFolderObjectByDcName(String dcName) throws Exception

 ManagedObjectReference hostFolder = null;

 RetrieveResult props = getRetrieveResultObjectWithProperty("Datacenter", "hostFolder");

 if(props != null)

 Boolean flag = false;

 for (ObjectContent oc : props.getObjects())

 if (flag == true)

 break;

 String path = null;

 List DynamicProperty dps = oc.getPropSet();

 ManagedObjectReference mor = null;

 if (dps != null)

 for (DynamicProperty dp : dps)

 path = dp.getName();

 if (path.equalsIgnoreCase("hostFolder"))

 mor = (ManagedObjectReference)dp.getVal();

 if (path.equalsIgnoreCase("name"))

 String value = (String) dp.getVal();

 if (value.equals(dcName))

 flag = true;

 hostFolder = mor;

 break;

 return hostFolder;

 private static ManagedObjectReference getVmFolderObjectByDcName(String dcName) throws Exception

 ManagedObjectReference vmFolder = null;

 RetrieveResult props = getRetrieveResultObjectWithProperty("Datacenter", "vmFolder");

 if(props != null)

 Boolean flag = false;

 for (ObjectContent oc : props.getObjects())

 if (flag == true)

 break;

 String path = null;

 List DynamicProperty dps = oc.getPropSet();

 ManagedObjectReference mor = null;

 if (dps != null)

 for (DynamicProperty dp : dps)

 path = dp.getName();

 if (path.equalsIgnoreCase("name"))

 String value = (String) dp.getVal();

 if (value.equals(dcName))

 flag = true;

 if (path.equalsIgnoreCase("vmFolder"))

 mor = (ManagedObjectReference)dp.getVal();

 if(flag == true)

 vmFolder = mor;

 break;

 return vmFolder;

 private static List String getHostNamesByHostFolder(ManagedObjectReference hostFolder) throws Exception

 List String list = new ArrayList String 

 TraversalSpec tSpec = getHostFolderTraversalSpec();

 PropertySpec propertySpec = new PropertySpec();

 propertySpec.setAll(Boolean.FALSE);

 propertySpec.getPathSet().add("name");

 propertySpec.setType("HostSystem");

 ObjectSpec objectSpec = new ObjectSpec();

 objectSpec.setObj(hostFolder);

 objectSpec.setSkip(Boolean.TRUE);

 objectSpec.getSelectSet().add(tSpec);

 PropertyFilterSpec propertyFilterSpec = new PropertyFilterSpec();

 propertyFilterSpec.getPropSet().add(propertySpec);

 propertyFilterSpec.getObjectSet().add(objectSpec);

 List PropertyFilterSpec listpfs = new ArrayList PropertyFilterSpec 

 listpfs.add(propertyFilterSpec);

 List ObjectContent listobjcont = retrievePropertiesAllObjects(listpfs);

 if (listobjcont != null)

 for (ObjectContent oc : listobjcont)

 String hostnm = null;

 List DynamicProperty listDynamicProps = oc.getPropSet();

 DynamicProperty[] dps = listDynamicProps.toArray(new DynamicProperty[listDynamicProps.size()]);

 if (dps != null)

 for (DynamicProperty dp : dps)

 hostnm = (String) dp.getVal();

 if (hostnm != null)

 list.add(hostnm);

 return list;

 private static List String getClusterNamesByHostFolder(ManagedObjectReference hostFolder) throws Exception

 List String list = new ArrayList String 

 TraversalSpec tSpec = getHostFolderOfComputeResourceTraversalSpec();

 PropertySpec propertySpec = new PropertySpec();

 propertySpec.setAll(Boolean.FALSE);

 propertySpec.getPathSet().add("name");

 propertySpec.setType("ClusterComputeResource");

 ObjectSpec objectSpec = new ObjectSpec();

 objectSpec.setObj(hostFolder);

 objectSpec.setSkip(Boolean.TRUE);

 objectSpec.getSelectSet().add(tSpec);

 PropertyFilterSpec propertyFilterSpec = new PropertyFilterSpec();

 propertyFilterSpec.getPropSet().add(propertySpec);

 propertyFilterSpec.getObjectSet().add(objectSpec);

 List PropertyFilterSpec listpfs = new ArrayList PropertyFilterSpec 

 listpfs.add(propertyFilterSpec);

 List ObjectContent listobjcont = retrievePropertiesAllObjects(listpfs);

 if (listobjcont != null)

 for (ObjectContent oc : listobjcont)

 String hostnm = null;

 List DynamicProperty listDynamicProps = oc.getPropSet();

 DynamicProperty[] dps = listDynamicProps.toArray(new DynamicProperty[listDynamicProps.size()]);

 if (dps != null)

 for (DynamicProperty dp : dps)

 hostnm = (String) dp.getVal();

 if (hostnm != null)

 list.add(hostnm);

 return list;

 private static List String getVmNamesByVmFolder(ManagedObjectReference vmFolder) throws Exception

 List String list = new ArrayList String 

 TraversalSpec tSpec = getVmFolderTraversalSpec();

 PropertySpec propertySpec = new PropertySpec();

 propertySpec.setAll(Boolean.FALSE);

 propertySpec.getPathSet().add("name");

 propertySpec.setType("VirtualMachine");

 ObjectSpec objectSpec = new ObjectSpec();

 objectSpec.setObj(vmFolder);

 objectSpec.setSkip(Boolean.TRUE);

 objectSpec.getSelectSet().add(tSpec);

 PropertyFilterSpec propertyFilterSpec = new PropertyFilterSpec();

 propertyFilterSpec.getPropSet().add(propertySpec);

 propertyFilterSpec.getObjectSet().add(objectSpec);

 List PropertyFilterSpec listpfs = new ArrayList PropertyFilterSpec 

 listpfs.add(propertyFilterSpec);

 List ObjectContent listobjcont = retrievePropertiesAllObjects(listpfs);

 if (listobjcont != null)

 for (ObjectContent oc : listobjcont)

 String vmName = null;

 List DynamicProperty listDynamicProps = oc.getPropSet();

 DynamicProperty[] dps = listDynamicProps.toArray(new DynamicProperty[listDynamicProps.size()]);

 if (dps != null)

 for (DynamicProperty dp : dps)

 vmName = (String) dp.getVal();

 if (vmName != null)

 list.add(vmName);

 return list;

 public static List String getHostNameListByDCName(String dcName) throws Exception

 ManagedObjectReference hostFolder = getHostFolderObjectByDcName(dcName);

 List String list = null;

 if(hostFolder != null)

 list = getHostNamesByHostFolder(hostFolder); 

 return list;

 public static List String getVmNameListByDCName(String dcName) throws Exception

 List String list = null;

 ManagedObjectReference vmFolder = getVmFolderObjectByDcName(dcName);

 if(vmFolder != null)

 list = getVmNamesByVmFolder(vmFolder); 

 return list;

 public static List String getClusterNameListByDCName(String dcName) throws Exception

 ManagedObjectReference hostFolder = getHostFolderObjectByDcName(dcName);

 List String list = null;

 if(hostFolder != null)

 list = getClusterNamesByHostFolder(hostFolder); 

 return list;

 }

最后三个以public static修饰的方法就是通过数据中心的名称获取集群、主机、虚拟机的名称列表的方法。

如有疑问，欢迎提出。本文展示的代码都经过真实环境运行并投入使用中。

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