使用VMware VSphere WebService SDK进行开发 （二）——获取虚拟机cpu的使用情况

本文通过代码举例虚拟机cpu的使用情况来演示如何遍历搜寻VirtualMachine的对象，以及根据这个对象进行性能指标的见识。希望可以取到举一反三的效果。

首先下面先罗列出如何更具虚拟机的名称获得VirtualMachine的ManagedObjectReference对象。

private static TraversalSpec getVmTraversalSpec(){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 dataCenterToVMFolder = new TraversalSpec();dataCenterToVMFolder.setName("DataCenterToVMFolder");dataCenterToVMFolder.setType("Datacenter");dataCenterToVMFolder.setPath("vmFolder");dataCenterToVMFolder.setSkip(false);dataCenterToVMFolder.getSelectSet().add(sSpec);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(dataCenterToVMFolder);sSpecArr.add(vAppToVM);sSpecArr.add(vAppToVApp);traversalSpec.getSelectSet().addAll(sSpecArr);return traversalSpec;}

private static ManagedObjectReference getVmByVmName(String vmName){ManagedObjectReference retVal = null;ManagedObjectReference rootFolder = serviceContent.getRootFolder();try{TraversalSpec tSpec = getVmTraversalSpec();PropertySpec propertySpec = new PropertySpec();propertySpec.setAll(Boolean.FALSE);propertySpec.getPathSet().add("name");propertySpec.setType("VirtualMachine");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 vmnm = null;List<DynamicProperty> dps = oc.getPropSet();if (dps != null){for (DynamicProperty dp : dps){vmnm = (String) dp.getVal();}}if (vmnm != null && vmnm.equals(vmName)){retVal = mr;break;}}}}catch (SOAPFaultException sfe){printSoapFaultException(sfe);}catch (Exception e){e.printStackTrace();}return retVal;}

然后根据上面的VirtualMachine的ManagedObjectReference对象获取虚拟机的实时性能信息：

private static List<List<Long>> getVmData(String vmName, String nameInfo, String groupInfo) throws RuntimeFaultFaultMsg, DatatypeConfigurationException{List<List<Long>> list = new ArrayList<List<Long>>();ManagedObjectReference vmmor = getVmByVmName(vmName);if (vmmor != null){List<PerfCounterInfo> cInfo = getPerfCounters();int i = 0;Map<Integer, PerfCounterInfo> counters = new HashMap<Integer, PerfCounterInfo>();for (Iterator<PerfCounterInfo> it = cInfo.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;for (i = 0; i < pValues.size(); i++){List<PerfMetricSeries> listpems = ((PerfEntityMetric) pValues.get(i)).getValue();List<PerfSampleInfo> listinfo = ((PerfEntityMetric) pValues.get(i)).getSampleInfo();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() + " ";for (PerfMetricId pmi : mMetrics){int counterId = pmi.getCounterId();if (counterId == listpems.get(vi).getId().getCounterId()){printInf += "[" + pmi.getCounterId() + ":" + pmi.getInstance() + "]    ";}}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;}

真正获取cpu使用情况的方法只是调用上面的方法做一些简单的处理：

public static double getVmCpuUsageByVmName(String VmName) throws RuntimeFaultFaultMsg, DatatypeConfigurationException{double ans = 0.0;List<List<Long>> list = getVmData(VmName, "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;}

这里的虚拟机cpu使用情况是百分制的，而且vsphere sdk返回的百分比的结果都是要除以100的，譬如真实结果是5%，那么vsphere sdk返回的就是500，需要做一下处理。

接下来获取cpu的可用量：

public static double getVmCpuEntitlementByVmName(String VmName) throws RuntimeFaultFaultMsg, DatatypeConfigurationException{double ans = 0;List<List<Long>> list = getVmData(VmName, "entitlement", "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;}return ans;}

细心的读者可能发现的差别，这里只需要修改nameinfo以及groupinfo即可以获取不同的结果。
有一些监控数据不是实时获取的，通过上面的方法是获取不到的，比如：获取虚拟机cpu的个数，类似这种比较固定的信息，或者说配置信息更，就要另辟蹊径了。

public static int getVmCpuNumByVmName(String VmName) throws RuntimeFaultFaultMsg, InvalidPropertyFaultMsg{int ans = 0;String cpuNum = getVmPropertyByVmName("summary.config.numCpu", VmName);ans = Integer.valueOf(cpuNum);return ans;}

private static String getVmPropertyByVmName(String property, String VmName) throws RuntimeFaultFaultMsg, InvalidPropertyFaultMsg{String ans = null;RetrieveResult props = getRetrieveResultObjectWithProperty("VirtualMachine", 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(VmName)){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(VmName)){flag = true;}}if (path.equalsIgnoreCase(property)){String val = String.valueOf(dp.getVal());if (flag == true){ans = val;break;}}}}}}}return ans;}

private static RetrieveResult getRetrieveResultObjectWithProperty(String MorName, String property) throws InvalidPropertyFaultMsg, RuntimeFaultFaultMsg{ManagedObjectReference viewMgrRef = serviceContent.getViewManager();ManagedObjectReference propColl = serviceContent.getPropertyCollector();List<String> vmList = new ArrayList<String>();vmList.add(MorName);ManagedObjectReference cViewRef = vimPort.createContainerView(viewMgrRef, serviceContent.getRootFolder(), vmList, true);ObjectSpec oSpec = new ObjectSpec();oSpec.setObj(cViewRef);oSpec.setSkip(true);TraversalSpec tSpec = new TraversalSpec();tSpec.setName("traversalEntities");tSpec.setPath("view");tSpec.setSkip(false);tSpec.setType("ContainerView");oSpec.getSelectSet().add(tSpec);PropertySpec pSpec = new PropertySpec();pSpec.setType(MorName);pSpec.getPathSet().add("name");PropertySpec pSpecRPr = new PropertySpec();pSpecRPr.setType(MorName);pSpecRPr.getPathSet().add(property);PropertyFilterSpec fSpec = new PropertyFilterSpec();fSpec.getObjectSet().add(oSpec);fSpec.getPropSet().add(pSpec);fSpec.getPropSet().add(pSpecRPr);List<PropertyFilterSpec> fSpecList = new ArrayList<PropertyFilterSpec>();fSpecList.add(fSpec);RetrieveOptions ro = new RetrieveOptions();RetrieveResult props = vimPort.retrievePropertiesEx(propColl, fSpecList, ro);return props;}

这样就可以获取虚拟机的cpu个数的信息。

附加一个方法（获取vCenter下所有虚拟机的名称）

public static List<String> getVmNames(){List<String> list = new ArrayList<String>();ManagedObjectReference rootFolder = serviceContent.getRootFolder();try{TraversalSpec tSpec = getVmTraversalSpec();PropertySpec propertySpec = new PropertySpec();propertySpec.setAll(Boolean.FALSE);propertySpec.getPathSet().add("name");propertySpec.setType("VirtualMachine");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 vmnm = null;List<DynamicProperty> dps = oc.getPropSet();if (dps != null){for (DynamicProperty dp : dps){vmnm = (String) dp.getVal();if (vmnm != null){list.add(vmnm);}}}}}}catch (SOAPFaultException sfe){printSoapFaultException(sfe);}catch (Exception e){e.printStackTrace();}return list;}

关于主机（HostSystem）信息的获取将在下一篇文章中呈现。敬请期待。

Modified: 居然忘了写一个重要的函数了，这里赶紧补上：

private static List<PerfCounterInfo> getPerfCounters(){List<PerfCounterInfo> pciArr = null;try{PropertySpec propertySpec = new PropertySpec();propertySpec.setAll(Boolean.FALSE);propertySpec.getPathSet().add("perfCounter");propertySpec.setType("PerformanceManager");List<PropertySpec> propertySpecs = new ArrayList<PropertySpec>();propertySpecs.add(propertySpec);ObjectSpec objectSpec = new ObjectSpec();objectSpec.setObj(perfManager);List<ObjectSpec> objectSpecs = new ArrayList<ObjectSpec>();objectSpecs.add(objectSpec);PropertyFilterSpec propertyFilterSpec = new PropertyFilterSpec();propertyFilterSpec.getPropSet().add(propertySpec);propertyFilterSpec.getObjectSet().add(objectSpec);List<PropertyFilterSpec> propertyFilterSpecs = new ArrayList<PropertyFilterSpec>();propertyFilterSpecs.add(propertyFilterSpec);List<PropertyFilterSpec> listpfs = new ArrayList<PropertyFilterSpec>(10);listpfs.add(propertyFilterSpec);List<ObjectContent> listobjcont = retrievePropertiesAllObjects(listpfs);if (listobjcont != null){for (ObjectContent oc : listobjcont){List<DynamicProperty> dps = oc.getPropSet();if (dps != null){for (DynamicProperty dp : dps){List<PerfCounterInfo> pcinfolist = ((ArrayOfPerfCounterInfo) dp.getVal()).getPerfCounterInfo();pciArr = pcinfolist;}}}}}catch (SOAPFaultException sfe){printSoapFaultException(sfe);}catch (Exception e){e.printStackTrace();}return pciArr;}