private static void VerifyParameters(Context context, BizUnitCompareConfiguration configuration)
{
if (configuration == null)
{
throw new ArgumentNullException("configuration", "Parameter configuration can not be null");
}
if (context == null)
{
throw new ArgumentNullException("context", "Parameter context can not be null");
}
}
internal static string GetFoundFilePath(Context context, BizUnitCompareConfiguration configuration)
{
VerifyParameters(context, configuration);
context.LogInfo(string.Format(CultureInfo.CurrentCulture, "Waiting for file (in: {0}) for {1} seconds.", configuration.SearchDirectory, configuration.Timeout/1000));
DateTime endTime = DateTime.Now.AddMilliseconds(configuration.Timeout).AddMilliseconds(1);
bool fileFound = false;
string foundFilePath = string.Empty;
do
{
string[] files = Directory.GetFiles(configuration.SearchDirectory, configuration.Filter, SearchOption.TopDirectoryOnly);
if (files.Length > 0)
{
try
{
string fileData;
using (FileStream testFileStream = File.Open(files[0], FileMode.Open, FileAccess.Read, FileShare.Read))
{
using (var testFileStreamReader = new StreamReader(testFileStream))
{
fileData = testFileStreamReader.ReadToEnd();
}
// it might be tempting to try to load the found file into an XmlDocument here,
// but the user might have configured replacements which will turn an invalid document into a valid XML.
}
context.LogInfo(string.Format(CultureInfo.CurrentCulture, "File found: {0}", files[0]));
context.LogInfo(fileData);
foundFilePath = files[0];
fileFound = true;
}
catch (IOException)
{
context.LogWarning("Error while opening found file ({0}) for reading. Will retry continously until timeout expires.", files[0]);
}
}
Thread.Sleep(100);
} while (DateTime.Now < endTime && !fileFound);
if (!fileFound)
{
throw new FileNotFoundException(string.Format(CultureInfo.CurrentCulture, "No files found in {0} within the given timeout ({1})", configuration.SearchDirectory, configuration.Timeout));
}
return foundFilePath;
}