QName x = QName.valueOf(invocationContext.getServiceName());
String timeStampedServiceName = GfacUtils.createServiceDirName(x);
File localStdOutFile = new File(logDir, timeStampedServiceName + ".stdout");
File localStdErrFile = new File(logDir, timeStampedServiceName + ".stderr");
String stdout = ftp.readRemoteFile(stdoutURI, gssCred, localStdOutFile);
String stderr = ftp.readRemoteFile(stderrURI, gssCred, localStdErrFile);
//set to context
OutputUtils.fillOutputFromStdout(invocationContext.getMessageContext("output"), stdout, stderr);