public void terminateInstance(@NotNull final VmwareCloudInstance instance) {

    LOG.info("Stopping instance " + instance.getName());
    instance.setStatus(InstanceStatus.SCHEDULED_TO_STOP);
    myAsyncTaskExecutor.executeAsync(
        new VmwareTaskWrapper(
            new Callable<Task>() {
              public Task call() throws Exception {
                return myApiConnector.stopInstance(instance);
              }
            },
            "Stop " + instance.getName()),
        new ImageStatusTaskWrapper(instance) {

          @Override
          public void onComplete() {
            instance.setStatus(InstanceStatus.STOPPED);
            if (myImageDetails
                .getBehaviour()
                .isDeleteAfterStop()) { // we only destroy proper instances.
              deleteInstance(instance);
            }
          }
        });
  }
  public boolean canStartNewInstance() {
    if (getErrorInfo() != null) {
      LOG.debug("Can't start new instance, if image is erroneous");
      return false;
    }

    if (myImageDetails.getBehaviour().isUseOriginal()) {
      final VmwareCloudInstance myInstance = myInstances.get(myImageDetails.getSourceName());
      if (myInstance == null) {
        return false;
      }
      return myInstance.getStatus() == InstanceStatus.STOPPED;
    }

    final boolean countStoppedVmsInLimit =
        TeamCityProperties.getBooleanOrTrue(VmwareConstants.CONSIDER_STOPPED_VMS_LIMIT)
            && myImageDetails.getBehaviour().isDeleteAfterStop();

    final List<String> consideredInstances = new ArrayList<String>();
    for (Map.Entry<String, VmwareCloudInstance> entry : myInstances.entrySet()) {
      if (entry.getValue().getStatus() != InstanceStatus.STOPPED || countStoppedVmsInLimit)
        consideredInstances.add(entry.getKey());
    }
    final boolean canStartMore = consideredInstances.size() < myImageDetails.getMaxInstances();
    LOG.debug(
        String.format(
            "Instances count: %d %s, can start more: %s",
            consideredInstances.size(),
            Arrays.toString(consideredInstances.toArray()),
            String.valueOf(canStartMore)));
    return canStartMore;
  }
 @Override
 public void detectNewInstances(final Map<String, AbstractInstance> realInstances) {
   for (String instanceName : realInstances.keySet()) {
     if (myInstances.get(instanceName) == null) {
       final VmwareInstance realInstance = (VmwareInstance) realInstances.get(instanceName);
       final VmwareCloudInstance newInstance =
           new VmwareCloudInstance(this, instanceName, realInstance.getSnapshotName());
       newInstance.setStatus(realInstance.getInstanceStatus());
       myInstances.put(instanceName, newInstance);
     }
   }
 }
 private void deleteInstance(@NotNull final VmwareCloudInstance instance) {
   if (instance.getErrorInfo() == null) {
     LOG.info("Will delete instance " + instance.getName());
     final VmwareInstance vmInstance;
     try {
       vmInstance = myApiConnector.getInstanceDetails(instance.getName());
       myAsyncTaskExecutor.executeAsync(
           vmInstance.deleteInstance(),
           new ImageStatusTaskWrapper(instance) {
             @Override
             public void onSuccess() {
               removeInstance(instance.getName());
             }
           });
     } catch (VmwareCheckedCloudException e) {
       LOG.warn("An exception during deleting instance " + instance.getName(), e);
       instance.updateErrors(TypedCloudErrorInfo.fromException(e));
     }
   } else {
     LOG.warn(
         String.format(
             "Won't delete instance %s with error: %s (%s)",
             instance.getName(),
             instance.getErrorInfo().getMessage(),
             instance.getErrorInfo().getDetailedMessage()));
   }
 }
 private synchronized void startVM(
     @NotNull final VmwareCloudInstance instance,
     @NotNull final CloudInstanceUserData cloudInstanceUserData) {
   instance.setStatus(InstanceStatus.STARTING);
   myAsyncTaskExecutor.executeAsync(
       new VmwareTaskWrapper(
           new Callable<Task>() {
             public Task call() throws Exception {
               return myApiConnector.startInstance(
                   instance, instance.getName(), cloudInstanceUserData);
             }
           },
           "Start instance " + instance.getName()),
       new ImageStatusTaskWrapper(instance) {
         @Override
         public void onSuccess() {
           reconfigureVmTask(instance, cloudInstanceUserData);
         }
       });
 }
  @Override
  public synchronized VmwareCloudInstance startNewInstance(
      @NotNull final CloudInstanceUserData cloudInstanceUserData) throws QuotaException {
    try {
      final VmwareCloudInstance instance = getOrCreateInstance();
      if (instance == null) {
        return null;
      }
      boolean willClone = !myApiConnector.checkVirtualMachineExists(instance.getName());
      LOG.info("Will clone for " + instance.getName() + ": " + willClone);
      if (willClone && myImageDetails.getMaxInstances() <= myInstances.size()) {
        throw new QuotaException(
            String.format(
                "Cannot clone '%s' into '%s' - limit exceeded",
                myImageDetails.getSourceName(), instance.getName()));
      }
      instance.setStatus(InstanceStatus.SCHEDULED_TO_START);
      if (!myInstances.containsKey(instance.getName())) {
        addInstance(instance);
      }
      if (willClone) {
        myAsyncTaskExecutor.executeAsync(
            new VmwareTaskWrapper(
                new Callable<Task>() {
                  public Task call() throws Exception {
                    return myApiConnector.cloneAndStartVm(
                        instance, myImageDetails.getResourcePoolId(), myImageDetails.getFolderId());
                  }
                },
                "Clone and start instance " + instance.getName()),
            new ImageStatusTaskWrapper(instance) {
              @Override
              public void onSuccess() {
                reconfigureVmTask(instance, cloudInstanceUserData);
              }

              @Override
              public void onError(final Throwable th) {
                super.onError(th);
                removeInstance(instance.getName());
              }
            });
      } else {
        startVM(instance, cloudInstanceUserData);
      }
      return instance;
    } catch (QuotaException e) {
      throw e;
    } catch (VmwareCheckedCloudException e) {
      throw new CloudException("Unable to start new instance: " + e.toString());
    }
  }
  public VmwareCloudImage(
      @NotNull final VMWareApiConnector apiConnector,
      @NotNull final VmwareCloudImageDetails imageDetails,
      @NotNull final CloudAsyncTaskExecutor asyncTaskExecutor,
      @NotNull final File idxStorage) {
    super(imageDetails.getNickname(), imageDetails.getNickname());
    myImageDetails = imageDetails;
    myApiConnector = apiConnector;
    myAsyncTaskExecutor = asyncTaskExecutor;
    myInstances.clear();
    myIdxFile = new File(idxStorage, imageDetails.getNickname() + ".idx");
    if (!myIdxFile.exists()) {
      try {
        FileUtil.writeFileAndReportErrors(myIdxFile, "1");
      } catch (IOException e) {
        LOG.warn(
            String.format(
                "Unable to write idx file '%s': %s", myIdxFile.getAbsolutePath(), e.toString()));
      }
    }

    Map<String, VmwareInstance> realInstances = null;
    try {
      realInstances = myApiConnector.listImageInstances(this);
    } catch (VmwareCheckedCloudException e) {
      updateErrors(TypedCloudErrorInfo.fromException(e));
      return;
    }
    if (imageDetails.getBehaviour().isUseOriginal()) {
      final VmwareCloudInstance imageInstance =
          new VmwareCloudInstance(
              this, imageDetails.getSourceName(), VmwareConstants.CURRENT_STATE);
      myInstances.put(myImageDetails.getSourceName(), imageInstance);

      final VmwareInstance vmwareInstance = realInstances.get(imageDetails.getSourceName());
      if (vmwareInstance != null) {
        imageInstance.setStatus(vmwareInstance.getInstanceStatus());
      } else {
        imageInstance.setStatus(InstanceStatus.UNKNOWN);
        imageInstance.updateErrors(
            new TypedCloudErrorInfo("NoVM", "VM doesn't exist: " + imageDetails.getSourceName()));
      }
    } else {
      for (String instanceName : realInstances.keySet()) {
        final VmwareInstance instance = realInstances.get(instanceName);
        final String snapshotName = instance.getSnapshotName();
        VmwareCloudInstance cloudInstance =
            new VmwareCloudInstance(this, instanceName, snapshotName);
        cloudInstance.setStatus(instance.getInstanceStatus());
        myInstances.put(instanceName, cloudInstance);
      }
    }
  }
 private synchronized void reconfigureVmTask(
     @NotNull final VmwareCloudInstance instance,
     @NotNull final CloudInstanceUserData cloudInstanceUserData) {
   myAsyncTaskExecutor.executeAsync(
       new VmwareTaskWrapper(
           new Callable<Task>() {
             public Task call() throws Exception {
               return myApiConnector.reconfigureInstance(
                   instance, instance.getName(), cloudInstanceUserData);
             }
           },
           "Reconfigure " + instance.getName()),
       new ImageStatusTaskWrapper(instance) {
         @Override
         public void onSuccess() {
           instance.setStatus(InstanceStatus.RUNNING);
           instance.updateErrors();
           LOG.info("Instance started successfully");
         }
       });
 }
 @Override
 public void onError(final Throwable th) {
   myInstance.setStatus(InstanceStatus.ERROR);
   if (th != null) {
     myInstance.updateErrors(TypedCloudErrorInfo.fromException(th));
     LOG.warn(
         "An error occurred: "
             + th.getLocalizedMessage()
             + " during processing "
             + myInstance.getName());
   } else {
     myInstance.updateErrors(
         new TypedCloudErrorInfo(
             "Unknown error during processing instance " + myInstance.getName()));
     LOG.warn("Unknown error during processing " + myInstance.getName());
   }
 }
 public void addInstance(@NotNull final VmwareCloudInstance instance) {
   LOG.info(
       String.format(
           "Image %s, put instance %s", myImageDetails.getSourceName(), instance.getName()));
   myInstances.put(instance.getName(), instance);
 }
  @NotNull
  protected synchronized VmwareCloudInstance getOrCreateInstance()
      throws VmwareCheckedCloudException {
    if (!canStartNewInstance()) {
      throw new QuotaException("Unable to start more instances of image " + getName());
    }

    if (myImageDetails.getBehaviour().isUseOriginal()) {
      LOG.info("Won't create a new instance - using original");
      return myInstances.get(myImageDetails.getSourceName());
    }

    final String latestSnapshotName =
        myApiConnector.getLatestSnapshot(
            myImageDetails.getSourceName(), myImageDetails.getSnapshotName());
    if (!myImageDetails.useCurrentVersion() && latestSnapshotName == null) {
      updateErrors(new TypedCloudErrorInfo("No such snapshot: " + getSnapshotName()));
      throw new VmwareCheckedCloudException(
          "Unable to find snapshot: " + myImageDetails.getSnapshotName());
    }

    if (!myImageDetails.getBehaviour().isDeleteAfterStop()) {
      // on demand clone
      final Map<String, VmwareInstance> vmClones = myApiConnector.listImageInstances(this);

      // start an existsing one.
      final VmwareInstance imageVm =
          myApiConnector.getInstanceDetails(myImageDetails.getSourceName());
      for (VmwareInstance vmInstance : vmClones.values()) {
        if (vmInstance.getInstanceStatus() == InstanceStatus.STOPPED) {

          final String vmName = vmInstance.getName();
          final VmwareCloudInstance instance = myInstances.get(vmName);

          if (instance == null) {
            LOG.warn("Unable to find instance " + vmName + " in myInstances.");
            continue;
          }

          // checking if this instance is already starting.
          if (instance.getStatus() != InstanceStatus.STOPPED) continue;

          if (myImageDetails.useCurrentVersion()) {
            if (imageVm.getChangeVersion() == null
                || !imageVm.getChangeVersion().equals(vmInstance.getChangeVersion())) {
              LOG.info(
                  String.format(
                      "Change version for %s is outdated: '%s' vs '%s'",
                      vmName, vmInstance.getChangeVersion(), imageVm.getChangeVersion()));
              deleteInstance(instance);
              continue;
            }
          } else {
            final String snapshotName = vmInstance.getSnapshotName();
            if (latestSnapshotName != null && !latestSnapshotName.equals(snapshotName)) {
              LOG.info(
                  String.format(
                      "VM %s Snapshot is not the latest one: '%s' vs '%s'",
                      vmName, snapshotName, latestSnapshotName));
              deleteInstance(instance);
              continue;
            }
          }
          LOG.info("Will use existing VM with name " + vmName);
          return instance;
        }
      }
    }
    // wasn't able to find an existing candidate, so will clone into a new VM
    final String newVmName = generateNewVmName();
    LOG.info("Will create a new VM with name " + newVmName);
    return new VmwareCloudInstance(this, newVmName, latestSnapshotName);
  }