MsiStyleLogWriter.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / Tools / xws_reg / System / ServiceModel / Install / MsiStyleLogWriter.cs / 1 / MsiStyleLogWriter.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------
namespace System.ServiceModel.Install
{ 
    using System.Diagnostics;
    using System.Globalization; 
    using System.IO; 

    class MsiStyleLogWriter 
    {
        string logEntryPrefix;
        bool logFailureReported;
        StreamWriter logWriter; 

        MsiStyleLogWriter(string logEntryPrefix) 
        { 
            this.logEntryPrefix = logEntryPrefix;
 
            string tempPath = Path.GetTempPath();
            Random random = new Random();
            int attempts = 0;
            const int maxAttempts = 20; 
            Exception lastException = null;
 
            do 
            {
                string logFileName = string.Format(CultureInfo.InvariantCulture, "dd_wcf_retCA{0:X}.txt", 
                    random.Next(short.MaxValue));
                string logFilePath = Path.Combine(tempPath, logFileName);
                try
                { 
                    Stream logFileStream =
                        new FileStream(logFilePath, FileMode.CreateNew, FileAccess.Write, FileShare.Read); 
                    this.logWriter = new StreamWriter(logFileStream); 
                }
                catch (DirectoryNotFoundException exception) 
                {
                    EventLogger.LogWarning(SR.GetString(SR.ErrorCreatingMsiStyleLogFile, logFilePath, exception), false);
                    return;
                } 
                catch (PathTooLongException exception)
                { 
                    EventLogger.LogWarning(SR.GetString(SR.ErrorCreatingMsiStyleLogFile, logFilePath, exception), false); 
                    return;
                } 
                catch (IOException exception)
                {
                    // The current logFilePath may already exists; try again.
                    lastException = exception; 
                }
            } while ((this.logWriter == null) && (++attempts < maxAttempts)); 
 
            if (this.logWriter == null)
            { 
                EventLogger.LogWarning(SR.GetString(SR.ErrorCreatingMsiStyleLogFile, tempPath, lastException), false);
                this.logWriter = StreamWriter.Null;
            }
        } 

        public static MsiStyleLogWriter CreateWriter() 
        { 
            string mainModuleFilePath = Process.GetCurrentProcess().MainModule.FileName;
            string logEntryPrefix = Path.GetFileNameWithoutExtension(mainModuleFilePath); 

            MsiStyleLogWriter writer = new MsiStyleLogWriter(logEntryPrefix);

            DateTime now = DateTime.Now; 
            writer.WriteRaw(SR.GetString(SR.MsiStyleLogBanner, now.ToShortDateString(),
                now.ToString("HH:mm:ss", CultureInfo.CurrentCulture), mainModuleFilePath)); 
 
            return writer;
        } 

        public void WriteEntry(string message)
        {
            this.WriteRaw(string.Format(CultureInfo.InvariantCulture, "{0} [{1}]: {2}", this.logEntryPrefix, 
                DateTime.Now.ToString("HH:mm:ss:fff", CultureInfo.CurrentCulture), message));
        } 
 
        public void WriteRaw(string message)
        { 
            try
            {
                this.logWriter.WriteLine(message);
                this.logWriter.Flush(); 
            }
            catch (IOException exception) 
            { 
                if (!this.logFailureReported)
                { 
                    EventLogger.WriteLogEntry(SR.GetString(SR.ErrorWritingMsiStyleLogEntry, exception), EventLogEntryType.Warning);
                    this.logFailureReported = true;
                }
            } 
        }
    } 
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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