public void TextWriterTraceListener_FindPrevMessagePositionTest()
{
var testLog =
@"SampleApp Information: 0 : No free data file found. Going sleep.
ProcessId=4756
ThreadId=7
DateTime=2011-07-12T12:10:00.0000000Z
SampleApp Information: 0 : Searching for data files
ProcessId=4756
ThreadId=7
DateTime=2011-07-12T12:12:00.0000000Z
SampleApp Information: 0 : No free data file found. Going sleep.
ProcessId=4756
ThreadId=7
DateTime=2011-07-12T12:14:00.0000000Z
";
using (StringStreamMedia media = new StringStreamMedia(testLog, Encoding.ASCII))
using (ILogSourceThreadsInternal threads = new LogSourceThreads())
using (IPositionedMessagesReader reader = CreateFactory().CreateMessagesReader(new MediaBasedReaderParams(threads, media, new TempFilesManager(), new TraceSourceFactory())))
{
reader.UpdateAvailableBounds(false);
long?prevMessagePos = PositionedMessagesUtils.FindPrevMessagePosition(reader, 0x0000004A);
Assert.IsTrue(prevMessagePos.HasValue);
Assert.AreEqual(0, prevMessagePos.Value);
}
}
public static void Test(IMediaBasedReaderFactory factory, ILogMedia media, ExpectedLog expectation)
{
using (ILogSourceThreadsInternal threads = new LogSourceThreads())
using (IPositionedMessagesReader reader = factory.CreateMessagesReader(new MediaBasedReaderParams(threads, media, tempFilesManager, new TraceSourceFactory())))
{
reader.UpdateAvailableBounds(false);
List <IMessage> msgs = new List <IMessage>();
using (var parser = reader.CreateParser(new CreateParserParams(reader.BeginPosition)))
{
for (; ;)
{
var msg = parser.ReadNext();
if (msg == null)
{
break;
}
msgs.Add(msg);
}
}
expectation.StartVerification();
for (int i = 0; i < msgs.Count; ++i)
{
expectation.Verify(i, msgs[i]);
}
expectation.FinishVerification();
}
}
public static async Task Test(IMediaBasedReaderFactory factory, ILogMedia media, ExpectedLog expectation)
{
using (ILogSourceThreadsInternal threads = new LogSourceThreads())
using (IPositionedMessagesReader reader = factory.CreateMessagesReader(new MediaBasedReaderParams(threads, media)))
{
await reader.UpdateAvailableBounds(false);
List <IMessage> msgs = new List <IMessage>();
await DisposableAsync.Using(await reader.CreateParser(new CreateParserParams(reader.BeginPosition)), async parser =>
{
for (; ;)
{
var msg = await parser.ReadNext();
if (msg == null)
{
break;
}
msgs.Add(msg);
}
});
expectation.StartVerification();
for (int i = 0; i < msgs.Count; ++i)
{
expectation.Verify(i, msgs[i]);
}
expectation.FinishVerification();
}
}
public bool Update()
{
using (owner.trace.NewNamedFrame("Updating {0}", this.fileName))
{
CheckDisposed();
try
{
if (simpleMedia == null)
{
owner.trace.Info("SimpleMedia object not created yet. Creating");
simpleMedia = new SimpleFileMedia(
owner.fileSystem,
SimpleFileMedia.CreateConnectionParamsFromFileName(Path.Combine(owner.baseDirectory, FileName))
);
}
owner.trace.Info("Updating simple media");
simpleMedia.Update();
if (!simpleMedia.IsAvailable)
{
owner.trace.Info("File is not avaliable (i.e. has been deleted)");
return(false);
}
if (firstMessageTime == null)
{
owner.trace.Info("First message time is unknown. Calcalating it");
using (IPositionedMessagesReader reader = (IPositionedMessagesReader)Activator.CreateInstance(
owner.logReaderType, new MediaBasedReaderParams(owner.tempThreads, SimpleMedia, owner.tempFilesManager), owner.logFormatInfo))
{
owner.trace.Info("Reader created");
reader.UpdateAvailableBounds(false);
owner.trace.Info("Bounds found");
IMessage first = PositionedMessagesUtils.ReadNearestMessage(reader, reader.BeginPosition);
if (first == null)
{
owner.trace.Warning("No messages found");
return(false);
}
owner.trace.Info("First message: {0} '{1}'", first.Time, first.Text);
firstMessageTime = first.Time;
}
}
owner.trace.Info("Part updated OK");
return(true);
}
catch (Exception e)
{
owner.trace.Error(e, "Failure during part update");
return(false);
}
}
}
public static void Test(IMediaBasedReaderFactory factory, ILogMedia media, ExpectedLog expectation)
{
using (ILogSourceThreads threads = new LogSourceThreads())
using (IPositionedMessagesReader reader = factory.CreateMessagesReader(new MediaBasedReaderParams(threads, media, tempFilesManager)))
{
reader.UpdateAvailableBounds(false);
List <IMessage> msgs = new List <IMessage>();
using (var parser = reader.CreateParser(new CreateParserParams(reader.BeginPosition)))
{
for (; ;)
{
var msg = parser.ReadNext();
if (msg == null)
{
break;
}
msgs.Add(msg);
}
}
expectation.StartVerification();
int frameLevel = 0;
for (int i = 0; i < msgs.Count; ++i)
{
switch (msgs[i].Flags & MessageFlag.TypeMask)
{
case MessageFlag.StartFrame:
++frameLevel;
break;
case MessageFlag.EndFrame:
--frameLevel;
break;
}
expectation.Verify(i, msgs[i], frameLevel);
}
expectation.FinishVerification();
}
}