static void ReadMulticastFooter(int streamVersion, CKBinaryReader r, StreamLogType t, out string gId, out string mId, out int depth, out LogEntryType prevType, out DateTimeStamp prevTime)
{
if (streamVersion == 9)
{
gId = r.ReadString();
mId = r.ReadString();
depth = r.ReadNonNegativeSmallInt32();
Throw.CheckData(mId == GrandOutput.ExternalLogMonitorUniqueId || Base64UrlHelper.IsBase64UrlCharacters(mId));
}
else
{
gId = GrandOutput.UnknownGrandOutputId;
Debug.Assert(Guid.Empty.ToByteArray().Length == 16);
mId = streamVersion < 8 ? new Guid(r.ReadBytes(16)).ToString() : r.ReadString();
depth = streamVersion < 6 ? r.ReadInt32() : r.ReadNonNegativeSmallInt32();
if (streamVersion >= 8)
{
Throw.CheckData(mId == GrandOutput.ExternalLogMonitorUniqueId || Base64UrlHelper.IsBase64UrlCharacters(mId));
}
}
Throw.CheckData(gId == GrandOutput.UnknownGrandOutputId || Base64UrlHelper.IsBase64UrlCharacters(gId));
Throw.CheckData(depth >= 0);
prevType = LogEntryType.None;
prevTime = DateTimeStamp.Unknown;
if ((t & StreamLogType.IsPreviousKnown) != 0)
{
prevTime = new DateTimeStamp(DateTime.FromBinary(r.ReadInt64()), (t & StreamLogType.IsPreviousKnownHasUniquifier) != 0 ? r.ReadByte() : (Byte)0);
prevType = (LogEntryType)r.ReadByte();
}
}
static ILogEntry ReadGroupClosed(int streamVersion, CKBinaryReader r, StreamLogType t, LogLevel logLevel)
{
DateTimeStamp time = new DateTimeStamp(DateTime.FromBinary(r.ReadInt64()), (t & StreamLogType.HasUniquifier) != 0 ? r.ReadByte() : (Byte)0);
ActivityLogGroupConclusion[] conclusions = Util.Array.Empty <ActivityLogGroupConclusion>();
if ((t & StreamLogType.HasConclusions) != 0)
{
int conclusionsCount = streamVersion < 6 ? r.ReadInt32() : r.ReadNonNegativeSmallInt32();
conclusions = new ActivityLogGroupConclusion[conclusionsCount];
for (int i = 0; i < conclusionsCount; i++)
{
CKTrait cTags = ActivityMonitor.Tags.Register(r.ReadString());
string cText = r.ReadString();
conclusions[i] = new ActivityLogGroupConclusion(cText, cTags);
}
}
if ((t & StreamLogType.IsMultiCast) == 0)
{
return(new LECloseGroup(time, logLevel, conclusions));
}
Guid mId;
int depth;
LogEntryType prevType;
DateTimeStamp prevTime;
ReadMulticastFooter(streamVersion, r, t, out mId, out depth, out prevType, out prevTime);
return(new LEMCCloseGroup(mId, depth, prevTime, prevType, time, logLevel, conclusions));
}
static void ReadMulticastFooter(int streamVersion, CKBinaryReader r, StreamLogType t, out Guid mId, out int depth, out LogEntryType prevType, out DateTimeStamp prevTime)
{
Debug.Assert(Guid.Empty.ToByteArray().Length == 16);
mId = new Guid(r.ReadBytes(16));
depth = streamVersion < 6 ? r.ReadInt32() : r.ReadNonNegativeSmallInt32();
if (depth < 0)
{
throw new InvalidDataException();
}
prevType = LogEntryType.None;
prevTime = DateTimeStamp.Unknown;
if ((t & StreamLogType.IsPreviousKnown) != 0)
{
prevTime = new DateTimeStamp(DateTime.FromBinary(r.ReadInt64()), (t & StreamLogType.IsPreviousKnownHasUniquifier) != 0 ? r.ReadByte() : (Byte)0);
prevType = (LogEntryType)r.ReadByte();
}
}
/// <summary>
/// Reads a <see cref="ILogEntry"/> from the binary reader that can be a <see cref="IMulticastLogEntry"/>.
/// If the first read byte is 0, read stops and null is returned.
/// The 0 byte is the "end marker" that <see cref="CKMonWriterClient.Close()"/> write, but this
/// method can read non zero-terminated streams (it catches an EndOfStreamException when reading the first byte and handles it silently).
/// This method can throw any type of exception except <see cref="EndOfStreamException"/>
/// (like <see cref="InvalidDataException"/> for instance) that must be handled by the caller.
/// </summary>
/// <param name="r">The binary reader.</param>
/// <param name="streamVersion">The version of the stream.</param>
/// <param name="badEndOfFile">True whenever the end of file is the result of an <see cref="EndOfStreamException"/>.</param>
/// <returns>The log entry or null if a zero byte (end marker) has been found.</returns>
static public ILogEntry?Read(CKBinaryReader r, int streamVersion, out bool badEndOfFile)
{
Throw.CheckNotNullArgument(r);
badEndOfFile = false;
StreamLogType t = StreamLogType.EndOfStream;
LogLevel logLevel = LogLevel.None;
try
{
ReadLogTypeAndLevel(r, streamVersion, out t, out logLevel);
}
catch (EndOfStreamException)
{
badEndOfFile = true;
// Silently ignores here reading beyond the stream: this
// kindly handles the lack of terminating 0 byte.
}
if (t == StreamLogType.EndOfStream)
{
return(null);
}
if ((t & StreamLogType.TypeMask) == StreamLogType.TypeGroupClosed)
{
return(ReadGroupClosed(streamVersion, r, t, logLevel));
}
DateTimeStamp time = new DateTimeStamp(DateTime.FromBinary(r.ReadInt64()), (t & StreamLogType.HasUniquifier) != 0 ? r.ReadByte() : (Byte)0);
if (time.TimeUtc.Year < 2014 || time.TimeUtc.Year > 3000)
{
throw new InvalidDataException("Date year before 2014 or after 3000 are considered invalid.");
}
CKTrait tags = ActivityMonitor.Tags.Empty;
string? fileName = null;
int lineNumber = 0;
CKExceptionData?ex = null;
string? text = null;
if ((t & StreamLogType.HasTags) != 0)
{
tags = ActivityMonitor.Tags.Register(r.ReadString());
}
if ((t & StreamLogType.HasFileName) != 0)
{
fileName = r.ReadString();
lineNumber = streamVersion < 6 ? r.ReadInt32() : r.ReadNonNegativeSmallInt32();
if (lineNumber > 100 * 1000)
{
throw new InvalidDataException("LineNumber greater than 100K is considered invalid.");
}
}
if ((t & StreamLogType.HasException) != 0)
{
ex = new CKExceptionData(r);
if ((t & StreamLogType.IsTextTheExceptionMessage) != 0)
{
text = ex.Message;
}
}
if (text == null)
{
text = r.ReadString((t & StreamLogType.IsLFOnly) == 0);
}
string gId;
string mId;
int depth;
LogEntryType prevType;
DateTimeStamp prevTime;
if ((t & StreamLogType.TypeMask) == StreamLogType.TypeLine)
{
if ((t & StreamLogType.IsMultiCast) == 0)
{
return(new LELog(text, time, fileName, lineNumber, logLevel, tags, ex));
}
ReadMulticastFooter(streamVersion, r, t, out gId, out mId, out depth, out prevType, out prevTime);
return(new LEMCLog(gId, mId, depth, prevTime, prevType, text, time, fileName, lineNumber, logLevel, tags, ex));
}
if ((t & StreamLogType.TypeMask) != StreamLogType.TypeOpenGroup)
{
throw new InvalidDataException();
}
if ((t & StreamLogType.IsMultiCast) == 0)
{
return(new LEOpenGroup(text, time, fileName, lineNumber, logLevel, tags, ex));
}
ReadMulticastFooter(streamVersion, r, t, out gId, out mId, out depth, out prevType, out prevTime);
return(new LEMCOpenGroup(gId, mId, depth, prevTime, prevType, text, time, fileName, lineNumber, logLevel, tags, ex));
}