public async Task <IActionResult> CreateAndUploadData(int instanceOwnerId, Guid instanceGuid, string elementType)
{
string instanceId = $"{instanceOwnerId}/{instanceGuid}";
if (instanceOwnerId == 0 || string.IsNullOrEmpty(elementType) || Request.Body == null)
{
return(BadRequest("Missing parameter values: instanceId, elementType or attached file content cannot be null"));
}
// check if instance exist and user is allowed to change the instance data
Instance instance = GetInstance(instanceId, instanceOwnerId, out ActionResult errorMessage);
if (instance == null)
{
return(errorMessage);
}
// check metadata
Application appInfo = GetApplication(instance.AppId, instance.Org, out ActionResult appErrorMessage);
if (appInfo == null)
{
return(appErrorMessage);
}
if (!appInfo.ElementTypes.Exists(e => e.Id == elementType))
{
return(BadRequest("Requested element type is not declared in application metadata"));
}
DataElement newData = GetDataElementFromRequest(Request, elementType, instance, out Stream theStream);
if (theStream == null)
{
return(BadRequest("No data attachements found"));
}
if (instance.Data == null)
{
instance.Data = new List <DataElement>();
}
instance.Data.Add(newData);
try
{
// store file as blob
newData.FileSize = await _dataRepository.WriteDataToStorage(theStream, newData.StorageUrl);
// update instance
Instance result = await _instanceRepository.Update(instance);
InstancesController.AddSelfLinks(Request, result);
return(Ok(result));
}
catch (Exception e)
{
return(StatusCode(500, $"Unable to create instance data in storage: {e}"));
}
}
public async Task <IActionResult> OverwriteData(int instanceOwnerId, Guid instanceGuid, Guid dataId)
{
string instanceId = $"{instanceOwnerId}/{instanceGuid}";
if (instanceOwnerId == 0 || Request.Body == null)
{
return(BadRequest("Missing parameter values: instanceId, datafile or attached file content cannot be empty"));
}
// check if instance id exist and user is allowed to change the instance data
Instance instance = GetInstance(instanceId, instanceOwnerId, out ActionResult errorMessage);
if (instance == null)
{
return(errorMessage);
}
string dataIdString = dataId.ToString();
// check that data element exists, if not return not found
if (instance.Data != null && instance.Data.Exists(m => m.Id == dataIdString))
{
DataElement data = instance.Data.Find(m => m.Id == dataIdString);
if (data == null)
{
return(NotFound("Dataid is not registered in instance"));
}
string storageFileName = DataElementHelper.DataFileName(instance.AppId, instanceGuid.ToString(), dataIdString);
if (string.Equals(data.StorageUrl, storageFileName))
{
DateTime updateTime = DateTime.UtcNow;
DataElement updatedData = GetDataElementFromRequest(Request, data.ElementType, instance, out Stream theStream);
if (theStream == null)
{
return(BadRequest("No data attachements found"));
}
DateTime changedTime = DateTime.UtcNow;
// update data record
data.ContentType = updatedData.ContentType;
data.FileName = updatedData.FileName;
data.LastChangedBy = User.Identity.Name;
data.LastChangedDateTime = changedTime;
instance.LastChangedDateTime = changedTime;
instance.LastChangedBy = User.Identity.Name;
// store file as blob
data.FileSize = _dataRepository.WriteDataToStorage(theStream, storageFileName).Result;
if (data.FileSize > 0)
{
// update instance
Instance result = await _instanceRepository.Update(instance);
InstancesController.AddSelfLinks(Request, instance);
return(Ok(result));
}
return(UnprocessableEntity($"Could not process attached file"));
}
return(StatusCode(500, $"Storage url does not match with instance metadata"));
}
return(BadRequest("Cannot update data element that is not registered"));
}
private void AddSelfLinks(Instance instance, DataElement dataElement)
{
InstancesController.AddDataSelfLinks(
InstancesController.ComputeInstanceSelfLink(Request, instance),
dataElement);
}