How to use

getParent

method

in

org.apache.cloudstack.engine.subsystem.api.storage.SnapshotInfo

protected void deleteSnapshotCacheChain(SnapshotInfo snapshot) {
  while (snapshot != null) {
    cacheMgr.deleteCacheObject(snapshot);
    snapshot = snapshot.getParent();
  }
}

protected void releaseSnapshotCacheChain(SnapshotInfo snapshot) {
  while (snapshot != null) {
    cacheMgr.releaseCacheObject(snapshot);
    snapshot = snapshot.getParent();
  }
}

private DataObject cacheSnapshotChain(SnapshotInfo snapshot, Scope scope) {
  DataObject leafData = null;
  DataStore store = cacheMgr.getCacheStorage(snapshot, scope);
  while (snapshot != null) {
    DataObject cacheData = cacheMgr.createCacheObject(snapshot, store);
    if (leafData == null) {
      leafData = cacheData;
    }
    snapshot = snapshot.getParent();
  }
  return leafData;
}

protected DataObject cacheSnapshotChain(SnapshotInfo snapshot, Scope scope) {
  DataObject leafData = null;
  DataStore store = cacheMgr.getCacheStorage(snapshot, scope);
  while (snapshot != null) {
    DataObject cacheData = cacheMgr.createCacheObject(snapshot, store);
    if (leafData == null) {
      leafData = cacheData;
    }
    snapshot = snapshot.getParent();
  }
  return leafData;
}

public SnapshotObjectTO(SnapshotInfo snapshot) {
  this.path = snapshot.getPath();
  this.setId(snapshot.getId());
  VolumeInfo vol = snapshot.getBaseVolume();
  if (vol != null) {
    this.volume = (VolumeObjectTO)vol.getTO();
    this.setVmName(vol.getAttachedVmName());
  }
  SnapshotInfo parentSnapshot = snapshot.getParent();
  ArrayList<String> parentsArry = new ArrayList<String>();
  if (parentSnapshot != null) {
    this.parentSnapshotPath = parentSnapshot.getPath();
    while(parentSnapshot != null) {
      parentsArry.add(parentSnapshot.getPath());
      parentSnapshot = parentSnapshot.getParent();
    }
    parents =  parentsArry.toArray(new String[parentsArry.size()]);
    ArrayUtils.reverse(parents);
  }
  this.dataStore = snapshot.getDataStore().getTO();
  this.setName(snapshot.getName());
  this.hypervisorType = snapshot.getHypervisorType();
  this.quiescevm = false;
}

SnapshotInfo parent = snapshot.getParent();
boolean deleted = false;
if (parent != null) {

private DataStore findSnapshotImageStore(SnapshotInfo snapshot) {
  Boolean fullSnapshot = true;
  Boolean snapshotFullBackup = snapshot.getFullBackup();
  if (snapshotFullBackup != null) {
    fullSnapshot = snapshotFullBackup;
  }
  if (fullSnapshot) {
    return dataStoreMgr.getImageStore(snapshot.getDataCenterId());
  } else {
    SnapshotInfo parentSnapshot = snapshot.getParent();
    // Note that DataStore information in parentSnapshot is for primary
    // data store here, we need to
    // find the image store where the parent snapshot backup is located
    SnapshotDataStoreVO parentSnapshotOnBackupStore = null;
    if (parentSnapshot != null) {
      parentSnapshotOnBackupStore = _snapshotStoreDao.findBySnapshot(parentSnapshot.getId(), DataStoreRole.Image);
    }
    if (parentSnapshotOnBackupStore == null) {
      return dataStoreMgr.getImageStore(snapshot.getDataCenterId());
    }
    return dataStoreMgr.getDataStore(parentSnapshotOnBackupStore.getDataStoreId(), parentSnapshotOnBackupStore.getRole());
  }
}

DataStore primaryStore = snapshotOnPrimary.getDataStore();
try {
  SnapshotInfo parent = snapshotOnPrimary.getParent();
  if (parent != null && primaryStore instanceof PrimaryDataStoreImpl) {
    if (((PrimaryDataStoreImpl)primaryStore).getPoolType() != StoragePoolType.RBD) {

@Override
public SnapshotInfo backupSnapshot(SnapshotInfo snapshot) {
  SnapshotInfo parentSnapshot = snapshot.getParent();