Program: 89302
Project: 89302
Buggy source:
String uploadTemplateToSwiftFromSecondaryStorage(VMTemplateHostVO templateHostRef){
  Long templateId=templateHostRef.getTemplateId();
  VMTemplateVO template=_tmpltDao.findById(templateId);
  if (template == null) {
    String errMsg="String_Node_Str" + templateId;
    s_logger.warn(errMsg);
    return errMsg;
  }
  SwiftTO swift=_snapshotMgr.getSwiftTO(null);
  if (swift == null) {
    String errMsg="String_Node_Str";
    s_logger.warn(errMsg);
    return errMsg;
  }
  HostVO secHost=_hostDao.findById(templateHostRef.getHostId());
  if (secHost == null) {
    String errMsg="String_Node_Str" + templateHostRef.getHostId();
    s_logger.warn(errMsg);
    return errMsg;
  }
  uploadTemplateToSwiftFromSecondaryStorageCommand cmd=new uploadTemplateToSwiftFromSecondaryStorageCommand(swift,secHost.getName(),secHost.getDataCenterId(),template.getAccountId(),templateId,_primaryStorageDownloadWait);
  Answer answer=null;
  try {
    answer=_agentMgr.sendToSSVM(secHost.getDataCenterId(),cmd);
    if (answer == null || !answer.getResult()) {
      String errMsg="String_Node_Str" + ((answer == null) ? "String_Node_Str" : answer.getDetails());
      s_logger.warn(errMsg);
      throw new CloudRuntimeException(errMsg);
    }
    VMTemplateSwiftVO tmpltSwift=new VMTemplateSwiftVO(swift.getId(),secHost.getId(),new Date(),templateHostRef.getSize(),templateHostRef.getPhysicalSize());
    _tmpltSwiftDao.persist(tmpltSwift);
  }
 catch (  Exception e) {
    String errMsg="String_Node_Str" + e.toString();
    s_logger.warn(errMsg);
    throw new CloudRuntimeException(errMsg);
  }
  return null;
}

Fixed version (ground truth):
String uploadTemplateToSwiftFromSecondaryStorage(VMTemplateHostVO templateHostRef){
  Long templateId=templateHostRef.getTemplateId();
  VMTemplateVO template=_tmpltDao.findById(templateId);
  if (template == null) {
    String errMsg="String_Node_Str" + templateId;
    s_logger.warn(errMsg);
    return errMsg;
  }
  SwiftTO swift=_swiftDao.getSwiftTO(null);
  if (swift == null) {
    String errMsg="String_Node_Str";
    s_logger.warn(errMsg);
    return errMsg;
  }
  HostVO secHost=_hostDao.findById(templateHostRef.getHostId());
  if (secHost == null) {
    String errMsg="String_Node_Str" + templateHostRef.getHostId();
    s_logger.warn(errMsg);
    return errMsg;
  }
  uploadTemplateToSwiftFromSecondaryStorageCommand cmd=new uploadTemplateToSwiftFromSecondaryStorageCommand(swift,secHost.getName(),secHost.getDataCenterId(),template.getAccountId(),templateId,_primaryStorageDownloadWait);
  Answer answer=null;
  try {
    answer=_agentMgr.sendToSSVM(secHost.getDataCenterId(),cmd);
    if (answer == null || !answer.getResult()) {
      String errMsg="String_Node_Str" + ((answer == null) ? "String_Node_Str" : answer.getDetails());
      s_logger.warn(errMsg);
      throw new CloudRuntimeException(errMsg);
    }
    VMTemplateSwiftVO tmpltSwift=new VMTemplateSwiftVO(swift.getId(),secHost.getId(),new Date(),templateHostRef.getSize(),templateHostRef.getPhysicalSize());
    _tmpltSwiftDao.persist(tmpltSwift);
  }
 catch (  Exception e) {
    String errMsg="String_Node_Str" + e.toString();
    s_logger.warn(errMsg);
    throw new CloudRuntimeException(errMsg);
  }
  return null;
}