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'
' Log.vb
'
' Authors:
' Rolf Bjarne Kvinge (RKvinge@novell.com>
'
' Copyright (C) 2007 Novell (http://www.novell.com)
'
' Permission is hereby granted, free of charge, to any person obtaining
' a copy of this software and associated documentation files (the
' "Software"), to deal in the Software without restriction, including
' without limitation the rights to use, copy, modify, merge, publish,
' distribute, sublicense, and/or sell copies of the Software, and to
' permit persons to whom the Software is furnished to do so, subject to
' the following conditions:
'
' The above copyright notice and this permission notice shall be
' included in all copies or substantial portions of the Software.
'
' THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
' EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
' MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
' NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
' LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
' OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
' WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
'
#If NET_VER >= 2.0 Then
Imports System.ComponentModel
Namespace Microsoft.VisualBasic.Logging
Public Class Log
Private m_Source As TraceSource
Private Shared m_IDs() As Integer = New Integer() {3, 2, 1, 0, 8, -1, -1, -1, 4, 5, 6, 7, 9}
Public Sub New()
'Empty constructor
m_Source = New TraceSource("DefaultSource")
InitializeWithDefaultsSinceNoConfigExists()
End Sub
Public Sub New(ByVal name As String)
m_Source = New TraceSource(name)
InitializeWithDefaultsSinceNoConfigExists()
End Sub
Protected Friend Overridable Sub InitializeWithDefaultsSinceNoConfigExists()
m_Source.Listeners.Add(New FileLogTraceListener("FileLog"))
m_Source.Switch.Level = SourceLevels.Information
End Sub
Private Shared Function GetIDOfType(ByVal severity As TraceEventType) As Integer
Return m_IDs(CInt(System.Math.Log(CInt(severity), 2)))
End Function
Public Sub WriteEntry(ByVal message As String)
WriteEntry(message, TraceEventType.Information, GetIDOfType(TraceEventType.Information))
End Sub
Public Sub WriteEntry(ByVal message As String, ByVal severity As TraceEventType)
WriteEntry(message, severity, GetIDOfType(severity))
End Sub
Public Sub WriteEntry(ByVal message As String, ByVal severity As TraceEventType, ByVal id As Integer)
If message Is Nothing Then message = String.Empty
'This is necessary, because if TRACE = false the call to TraceEvent is removed.
#Const TRACEDEFAULT = Trace
#Const TRACE = True
m_Source.TraceEvent(severity, id, message)
#Const TRACE = TRACEDEFAULT
End Sub
Public Sub WriteException(ByVal ex As Exception)
WriteException(ex, TraceEventType.Error, String.Empty, GetIDOfType(TraceEventType.Error))
End Sub
Public Sub WriteException(ByVal ex As Exception, ByVal severity As TraceEventType, ByVal additionalInfo As String)
WriteException(ex, severity, additionalInfo, GetIDOfType(severity))
End Sub
Public Sub WriteException(ByVal ex As Exception, ByVal severity As TraceEventType, ByVal additionalInfo As String, ByVal id As Integer)
Dim msg As String
If ex Is Nothing Then Throw New ArgumentNullException("ex")
msg = ex.Message
If additionalInfo <> String.Empty Then
msg &= " " & additionalInfo
End If
WriteEntry(msg, severity, id)
End Sub
Public ReadOnly Property DefaultFileLogWriter() As FileLogTraceListener
Get
Return TryCast(m_Source.Listeners("FileLog"), FileLogTraceListener)
End Get
End Property
<EditorBrowsable(EditorBrowsableState.Advanced)> _
Public ReadOnly Property TraceSource() As TraceSource
Get
Return m_Source
End Get
End Property
End Class
End Namespace
#End If
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