//******************************************************************************************************//  LogEventPublisherDetails.cs - Gbtc////  Copyright © 2016, Grid Protection Alliance.  All Rights Reserved.////  Licensed to the Grid Protection Alliance (GPA) under one or more contributor license agreements. See//  the NOTICE file distributed with this work for additional information regarding copyright ownership.//  The GPA licenses this file to you under the Eclipse Public License -v 1.0 (the "License"); you may//  not use this file except in compliance with the License. You may obtain a copy of the License at:////      http://www.opensource.org/licenses/eclipse-1.0.php////  Unless agreed to in writing, the subject software distributed under the License is distributed on an//  "AS-IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. Refer to the//  License for the specific language governing permissions and limitations.////  Code Modification History://  ----------------------------------------------------------------------------------------------------//  10/24/2016 - Steven E. Chisholm//       Generated original version of source code. //       ////****************************************************************************************************** using System.Diagnostics.CodeAnalysis;using System.IO;using Ionic.Zlib;using GSF.IO; namespace GSF.Diagnostics{    /// <summary>    /// A log subscriber that will log messages to a file.    /// </summary>    [SuppressMessage("Microsoft.Design", "CA1001:TypesThatOwnDisposableFieldsShouldBeDisposable")]    public class LogFileWriterInMemory    {        private readonly MemoryStream m_tmpStream;        private MemoryStream m_stream;        private DeflateStream m_zipStream;        private LogMessageSaveHelper m_saveHelper;        private int m_logCount;        private byte[] m_tmpBuffer;         /// <summary>        /// Creates a LogFileWriter that initially queues message        /// </summary>        public LogFileWriterInMemory()        {            m_saveHelper = LogMessageSaveHelper.Create();             m_stream = new MemoryStream();            m_stream.Write(282497); //VersionNumber: Compressed. With LogSaveHelper             m_zipStream = new DeflateStream(m_stream, CompressionMode.Compress, CompressionLevel.Level1, true);            m_zipStream.FlushMode = FlushType.Sync;             m_tmpBuffer = new byte[40960];            m_tmpStream = new MemoryStream();            m_logCount = 0;        }          /// <summary>        /// The number of logs that have been written to this file.        /// </summary>        public int LogCount        {            get            {                return m_logCount;            }        }         /// <summary>        /// Writes the specified log to the file        /// </summary>        /// <param name="log"></param>        public void Write(LogMessage log)        {            m_tmpStream.Position = 0;            m_tmpStream.Write(true);            log.Save(m_tmpStream, m_saveHelper);            long length = m_tmpStream.Position;            m_tmpStream.Position = 0;            m_tmpStream.CopyTo(m_zipStream, length, m_tmpBuffer);             if (log.Level >= MessageLevel.Info)            {                m_zipStream.Flush();            }             m_logCount++;        }         /// <summary>        /// Returns a byte array of the log zip stream.        /// </summary>        /// <returns>Byte array of the log zip stream.</returns>        public byte[] ToByteArray()        {            m_zipStream.Write(false);            m_zipStream.Flush();            m_zipStream.Dispose();            m_stream.Write(false);            return m_stream.ToArray();        }     }}