public DataTableResponseMessage VerifyInputFile()
{
DataTableResponseMessage rm = new DataTableResponseMessage();
//Verify that the file exists
if (!File.Exists(input_file))
{
rm.ErrorMessage = string.Format("Input data file not found: {0}", input_file);
rm.LogMessage = string.Format("Input data file not found: {0}", input_file);
return(rm);
}
//Verify the file type extension is correct
FileInfo fi = new FileInfo(input_file);
string ext = fi.Extension;
if (string.Compare(ext, file_type, StringComparison.OrdinalIgnoreCase) != 0)
{
rm.ErrorMessage = string.Format("Input data file not correct file type. Need {0} , found {1}", file_type, ext);
rm.LogMessage = string.Format("Input data file not correct file type: {0}", input_file);
return(rm);
}
//Nothing to see here
return(null);
}
public DataTableResponseMessage ExecuteProcessor(string processorsPath, string processorName, string inputFile)
{
DataTableResponseMessage dtRespMsg = null;
PluginHost <DataProcessor> pluginHost = null;
try
{
List <string> lstPlugin = new List <string>();
lstPlugin.Add(processorsPath);
pluginHost = new PluginHost <DataProcessor>(processorsPath);
pluginHost.LoadPlugins(lstPlugin);
DataProcessor proc = pluginHost.GetPlugin(processorName);
if (proc != null)
{
proc.input_file = inputFile;
dtRespMsg = proc.Execute();
}
//foreach (var processor in pluginHost.GetPlugins())
//{
// if (string.Compare(processor.name, processorName, true) == 0)
// {
// processor.input_file = inputFile;
// //result.OutputFile = outputFile;
// dtRespMsg = processor.Execute();
// break;
// }
//}
}
catch (Exception ex)
{
if (dtRespMsg == null)
{
dtRespMsg = new DataTableResponseMessage();
}
dtRespMsg.LogMessage = string.Format("Error processing file: {0} with Exception - {1}", inputFile, ex.Message);
dtRespMsg.ErrorMessage = string.Format("Error processing file: {0} with Exception - {1}", inputFile, ex.Message);
}
if (pluginHost != null)
{
pluginHost.Unload();
}
return(dtRespMsg);
//using (var fs = new FileStream(processorsPath, FileMode.Open, FileAccess.Read))
//{
// try
// {
// var context = new CollectibleAssemblyLoadContext(processorsPath);
// var assembly = context.LoadFromStream(fs);
// //Can have multiple processors implmented in a single assembly
// foreach (Type type in assembly.GetTypes())
// {
// if (typeof(DataProcessor).IsAssignableFrom(type))
// {
// DataProcessor result = Activator.CreateInstance(type) as DataProcessor;
// if (result != null)
// {
// if (string.Compare(result.id, processorID, true) == 0)
// {
// result.input_file = inputFile;
// //result.OutputFile = outputFile;
// dtRespMsg = result.Execute();
// break;
// }
// }
// }
// }
// context.Unload();
// GC.Collect();
// GC.WaitForPendingFinalizers();
// }
// //Handle unloadable libraries
// catch (Exception ex)
// {
// if (dtRespMsg == null)
// dtRespMsg = new DataTableResponseMessage();
// dtRespMsg.LogMessage = string.Format("Error processing file: {0} with Exception - {1}", inputFile, ex.Message);
// }
// return dtRespMsg;
}