public StreamErrorWrapper GetAppDataFiles(AppDataFileParameterMessage appDataFileParameterMessage)
{
return(Channel.GetAppDataFiles(appDataFileParameterMessage));
}
/// <summary>
/// Gets the XML files (in the form of an array of bytes) that hold general or advert condition data, if different from the client's
/// </summary>
/// <param name="appDataFileParameterMessage">Message contract to pass as a parameter</param>
/// <returns>a StreamErrorWrapper with the relevant stream or with a code that specifies that the file is the same as the one on the client side or with error information</returns>
public StreamErrorWrapper GetAppDataFiles(AppDataFileParameterMessage appDataFileParameterMessage)
{
StreamErrorWrapper streamErrorWrapper = new StreamErrorWrapper();
// close returned stream on completion
OperationContext clientContext = OperationContext.Current;
clientContext.OperationCompleted += new EventHandler(delegate(object sender, EventArgs args)
{
if (streamErrorWrapper.ReturnStream != null)
{
streamErrorWrapper.ReturnStream.Dispose();
}
});
if (appDataFileParameterMessage.SystemPassPhrase != _systemPassPhrase)
{
streamErrorWrapper.ErrorCode = "ERR:001";
streamErrorWrapper.Message = "Authentication failure";
streamErrorWrapper.ErrorSeverity = ErrorSeverity.Retriable;
streamErrorWrapper.ErrorStatus = ErrorStatus.Failure;
streamErrorWrapper.ReturnStream = new MemoryStream(new byte[0]);
return(streamErrorWrapper);
}
string appDataFullPath = "";
switch (appDataFileParameterMessage.DataFileType)
{
case DataFileType.AdvertConditions:
appDataFullPath = _appDataPath + "ss_adcond_data.dat";
break;
case DataFileType.GeneralConfiguration:
appDataFullPath = _appDataPath + "ss_general_data.dat";
break;
case DataFileType.ChannelData:
appDataFullPath = _channelDataPath + appDataFileParameterMessage.ChannelID + "_channel.dat";
break;
}
if (!File.Exists(appDataFullPath))
{
_applicationLog.Warn(appDataFullPath + " does not exist.");
streamErrorWrapper.ErrorStatus = ErrorStatus.Failure;
streamErrorWrapper.ErrorSeverity = ErrorSeverity.Retriable;
streamErrorWrapper.ErrorCode = "ERR:002";
streamErrorWrapper.Message = "File does not exist";
streamErrorWrapper.ReturnStream = new MemoryStream(new byte[0]); // stream must not be null as it is the message body
return(streamErrorWrapper);
}
string serverSideChecksum = ReadStringFromFile(Path.GetDirectoryName(appDataFullPath) + "\\" + Path.GetFileNameWithoutExtension(appDataFullPath) + ".chk");
if (appDataFileParameterMessage.Checksum == serverSideChecksum)
{
streamErrorWrapper.ErrorStatus = ErrorStatus.ChecksumEqual;
streamErrorWrapper.ReturnStream = new MemoryStream(new byte[0]);
return(streamErrorWrapper);
}
TryReadFileWithReadLock(streamErrorWrapper, appDataFullPath);
return(streamErrorWrapper);
}
