/// <summary>
/// Uploads metadata associated with a file, without changing the file itself. Do not modify the id or filename using this method-- it's for any other key/value pairs.
/// </summary>
/// <param name="metadata">The updated FileMetaData to upload to Kinvey.</param>
/// <param name="ct">[optional] The cancellation token. If cancellation is requested, an OperationCancelledException will be thrown.</param>
public async Task <FileMetaData> uploadMetadataAsync(FileMetaData metadata, CancellationToken ct = default(CancellationToken))
{
UploadMetaDataRequest uploadMetaDataRequest = buildUploadMetaDataRequest(metadata);
ct.ThrowIfCancellationRequested();
FileMetaData fmd = await uploadMetaDataRequest.ExecuteAsync();
return(fmd);
}
// Build upload request for updating metadata for existing file
private UploadMetaDataRequest buildUploadMetaDataRequest(FileMetaData metadata)
{
if (metadata == null ||
metadata.id == null)
{
throw new KinveyException(EnumErrorCategory.ERROR_FILE, EnumErrorCode.ERROR_FILE_UPLOAD_MISSING_METADATA_INFORMATION, "");
}
var urlParameters = new Dictionary <string, string>();
urlParameters.Add("appKey", ((KinveyClientRequestInitializer)client.RequestInitializer).AppKey);
urlParameters.Add("fileID", metadata.id);
UploadMetaDataRequest uploadMetaDataRequest = new UploadMetaDataRequest(metadata, urlParameters, this.client);
client.InitializeRequest(uploadMetaDataRequest);
uploadMetaDataRequest.customRequestHeaders = this.GetCustomRequestProperties();
return(uploadMetaDataRequest);
}
