使用VMware VSphere WebService SDK进行开发 （三）——获取主机（HostSystem）的基本信息

通过前面两篇文章的了解，详细应该很快掌握的code路数，这里首先罗列如何获取主机（接下去也会成为HostSystem）的对象。

private static TraversalSpec getHostSystemTraversalSpec()
{
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 dataCenterToHostFolder = new TraversalSpec();
dataCenterToHostFolder.setName("DataCenterToHostFolder");
dataCenterToHostFolder.setType("Datacenter");
dataCenterToHostFolder.setPath("hostFolder");
dataCenterToHostFolder.setSkip(false);
dataCenterToHostFolder.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(dataCenterToHostFolder);
sSpecArr.add(hostFolderToComputeResource);
sSpecArr.add(computeResourceToHostSystem);
traversalSpec.getSelectSet().addAll(sSpecArr);
return traversalSpec;
}

private static ManagedObjectReference getHostByHostName(String hostName)
{
ManagedObjectReference retVal = null;
ManagedObjectReference rootFolder = serviceContent.getRootFolder();
try
{
TraversalSpec tSpec = getHostSystemTraversalSpec();
PropertySpec propertySpec = new PropertySpec();
propertySpec.setAll(Boolean.FALSE);
propertySpec.getPathSet().add("name");
propertySpec.setType("HostSystem");

ObjectSpec objectSpec = new ObjectSpec();
objectSpec.setObj(rootFolder);
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>(1);
listpfs.add(propertyFilterSpec);
List<ObjectContent> listobjcont = retrievePropertiesAllObjects(listpfs);

if (listobjcont != null)
{
for (ObjectContent oc : listobjcont)
{
ManagedObjectReference mr = oc.getObj();
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 && hostnm.equals(hostName))
{
retVal = mr;
break;
}
}
}
else
{
System.out.println("The Object Content is Null");
}
}
catch (SOAPFaultException sfe)
{
printSoapFaultException(sfe);
}
catch (Exception e)
{
e.printStackTrace();
}
return retVal;
}

接下去展示获取HostSystem的性能信息的方法，和VirtualMachine的类似。

private static List<List<Long>> getHostData(String hostName, String nameInfo, String groupInfo) throws RuntimeFaultFaultMsg
{
List<List<Long>> list = new ArrayList<List<Long>>();
ManagedObjectReference vmmor = getHostByHostName(hostName);
if (vmmor != null)
{
List<PerfCounterInfo> cInfo = getPerfCounters();
List<PerfCounterInfo> vmCpuCounters = new ArrayList<PerfCounterInfo>();
for (int i = 0; i < cInfo.size(); ++i)
{
vmCpuCounters.add(cInfo.get(i));
}

int i = 0;
Map<Integer, PerfCounterInfo> counters = new HashMap<Integer, PerfCounterInfo>();
for (Iterator<PerfCounterInfo> it = vmCpuCounters.iterator(); it.hasNext();)
{
PerfCounterInfo pcInfo = (PerfCounterInfo) it.next();
counters.put(new Integer(pcInfo.getKey()), pcInfo);
}

List<PerfMetricId> listpermeid = vimPort.queryAvailablePerfMetric(perfManager, vmmor, null, null, new Integer(20));

ArrayList<PerfMetricId> mMetrics = new ArrayList<PerfMetricId>();
if (listpermeid != null)
{
for (int index = 0; index < listpermeid.size(); ++index)
{
if (counters.containsKey(new Integer(listpermeid.get(index).getCounterId())))
{
mMetrics.add(listpermeid.get(index));
}
}
}

PerfQuerySpec qSpec = new PerfQuerySpec();
qSpec.setEntity(vmmor);
qSpec.setMaxSample(new Integer(10));
qSpec.getMetricId().addAll(mMetrics);
qSpec.setIntervalId(new Integer(20));

List<PerfQuerySpec> qSpecs = new ArrayList<PerfQuerySpec>();
qSpecs.add(qSpec);

List<PerfEntityMetricBase> listpemb = vimPort.queryPerf(perfManager, qSpecs);
List<PerfEntityMetricBase> pValues = listpemb;

// System.out.println("pValues.size() = "+pValues.size());
for (i = 0; i < pValues.size(); i++)
{
List<PerfMetricSeries> listpems = ((PerfEntityMetric) pValues.get(i)).getValue();
// System.out.println("listpems.size() = "+listpems.size());
for (int vi = 0; vi < listpems.size(); ++vi)
{
String printInf = "";
PerfCounterInfo pci = (PerfCounterInfo) counters.get(new Integer(listpems.get(vi).getId().getCounterId()));

if (pci != null)
{
if (pci.getNameInfo().getKey().equalsIgnoreCase(nameInfo) && pci.getGroupInfo().getKey().equalsIgnoreCase(groupInfo))
{
printInf += vi + ":" + pci.getNameInfo().getSummary() + ":" + pci.getNameInfo().getKey() + ":" + pci.getNameInfo().getLabel() + ":"
+ pci.getGroupInfo().getKey() + ":" + pci.getGroupInfo().getLabel() + ":" + pci.getGroupInfo().getSummary() + " ";

if (listpems.get(vi) instanceof PerfMetricIntSeries)
{
PerfMetricIntSeries val = (PerfMetricIntSeries) listpems.get(vi);
List<Long> lislon = val.getValue();
for (Long k : lislon)
{
printInf += k + " ";
}
list.add(lislon);
}
printInf += "   " + pci.getUnitInfo().getKey() + " " + pci.getUnitInfo().getLabel() + " " + pci.getUnitInfo().getSummary();
System.out.println(printInf);
}
}
}
}

}

return list;
}

以获取主机cpu使用情况进行展示：

public static double getHostCpuUsageByHostName(String hostName) throws RuntimeFaultFaultMsg
{
double ans = 0.0;
List<List<Long>> list = getHostData(hostName, "usage", "cpu");
long maxInner = 0;
int times = 0;
for (List<Long> listOuter : list)
{
long tempInner = 0;
for (long inner : listOuter)
{
tempInner += inner;
}
if (tempInner > maxInner)
{
maxInner = tempInner;
times = listOuter.size();
}
}
if (times != 0)
{
ans = (double) maxInner / times;
}
ans = ans / 100;
return ans;
}

与VirtualMachine相同，Hostsystem也有些信息要通过另一种方式遍历。

譬如获取主机cpu的个数：

<span style="white-space:pre">	</span>private static String getHostPropertyByHostName(String property, String hostName) throws InvalidPropertyFaultMsg, RuntimeFaultFaultMsg
{
String ans = null;
RetrieveResult props = getRetrieveResultObjectWithProperty("HostSystem", property);

if (props != null)
{
Boolean flag = false;
if (property.compareToIgnoreCase("name") < 0)
{
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(property))
{
String val = String.valueOf(dp.getVal());
ans = val;
}
if (path.equalsIgnoreCase("name"))
{
String value = (String) dp.getVal();
if (value.equals(hostName))
{
flag = true;
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(hostName))
{
flag = true;
}
}
if (path.equalsIgnoreCase(property))
{
String val = String.valueOf(dp.getVal());
if (flag == true)
{
ans = val;
break;
}
}
}
}
}
}
}

return ans;
}

public static double getHostCpuUsageByHostName(String hostName) throws RuntimeFaultFaultMsg
{
double ans = 0.0;
List<List<Long>> list = getHostData(hostName, "usage", "cpu");
long maxInner = 0;
int times = 0;
for (List<Long> listOuter : list)
{
long tempInner = 0;
for (long inner : listOuter)
{
tempInner += inner;
}
if (tempInner > maxInner)
{
maxInner = tempInner;
times = listOuter.size();
}
}
if (times != 0)
{
ans = (double) maxInner / times;
}
ans = ans / 100;
return ans;
}

这里不做过多的说明，相信读者如果真的想要迫切了解这些内容，肯定会自己研究，本人罗列的代码都是亲身试用到项目中的，保证能够运行。希望对各位有帮助。

这里同样采用获取主机名称的方法来结束：

public static List<String> getHostNames()
{
List<String> list = new ArrayList<String>();
ManagedObjectReference rootFolder = serviceContent.getRootFolder();
try
{
TraversalSpec tSpec = getHostSystemTraversalSpec();
PropertySpec propertySpec = new PropertySpec();
propertySpec.setAll(Boolean.FALSE);
propertySpec.getPathSet().add("name");
propertySpec.setType("HostSystem");

ObjectSpec objectSpec = new ObjectSpec();
objectSpec.setObj(rootFolder);
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>(1);
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);
}
}
}
}
}
else
{
System.out.println("getHostNames: Object Content is null ");
}
}
catch (SOAPFaultException sfe)
{
printSoapFaultException(sfe);
}
catch (Exception e)
{
e.printStackTrace();
}

return list;
}