/// <summary>
/// Releases unmanaged and - optionally - managed resources.
/// </summary>
/// <param name="disposing">
/// <c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only
/// unmanaged resources.
/// </param>
protected virtual void Dispose(bool disposing)
{
if (!_disposed)
{
/////
// If called by the finalizer, dont bother restoring the context as you
// are currently running on a GC Finalizer thread.
/////
if (disposing)
{
/////
// Restore the original context
/////
if (_originalContextInfo != null)
{
_originalContextInfo.TransactionId = TransactionId;
CallContext.LogicalSetData(CallContextKey, _originalContextInfo);
}
else
{
CallContext.FreeNamedDataSlot(CallContextKey);
}
}
_originalContextInfo = null;
/////
// Dispose complete.
/////
_disposed = true;
}
}
/// <summary>
/// Gets the message chain.
/// </summary>
/// <param name="userId">The user identifier.</param>
/// <param name="separator">The separator.</param>
/// <param name="maxLength">The maximum length.</param>
/// <param name="caller">The caller.</param>
/// <returns></returns>
/// <value>
/// The message chain.
/// </value>
public static string GetMessageChain(long userId, string separator = "->", int maxLength = 128, [CallerMemberName] string caller = null)
{
DatabaseContextInfo ctx = GetContextInfo( );
if (ctx != null && ctx.TransactionId >= 0)
{
return($"u:{userId},{ctx.TransactionId}");
}
IList <string> messageChain = ctx == null?BuildDebugMessageChain( ) : BuildContextInfoMessageChain(ctx);
string message = TruncateMessageChain(userId, messageChain, separator, maxLength);
message = message ?? caller ?? "No context available";
return($"u:{userId},{message}");
}
/// <summary>
/// Builds the context information message chain.
/// </summary>
/// <param name="context">The context.</param>
/// <returns></returns>
private static IList <string> BuildContextInfoMessageChain(DatabaseContextInfo context)
{
List <string> messageChain = new List <string>( );
DatabaseContextInfo currentContext = context;
while (currentContext != null)
{
if (!string.IsNullOrEmpty(currentContext.Message))
{
messageChain.Insert(0, currentContext.Message);
}
currentContext = currentContext.Parent;
}
return(messageChain);
}
/// <summary>
/// Initializes a new instance of the <see cref="DatabaseContextInfo" /> class.
/// </summary>
/// <param name="message">The message.</param>
public DatabaseContextInfo(string message)
{
DatabaseContextInfo existingContextInfo = CallContext.LogicalGetData(CallContextKey) as DatabaseContextInfo;
if (existingContextInfo != null)
{
_originalContextInfo = existingContextInfo;
TransactionId = _originalContextInfo.TransactionId;
}
else
{
TransactionId = -1;
}
/////
// Compact messages
/////
if (existingContextInfo == null || !string.Equals(existingContextInfo.Message, message, StringComparison.OrdinalIgnoreCase))
{
Message = message;
}
CallContext.LogicalSetData(CallContextKey, this);
}
/// <summary>
/// Gets the context information.
/// </summary>
/// <returns></returns>
public static DatabaseContextInfo GetContextInfo( )
{
DatabaseContextInfo contextInfo = CallContext.LogicalGetData(CallContextKey) as DatabaseContextInfo;
return(contextInfo);
}
