bin/projects/dbatools/dbatools/Message/LogHost.cs
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using System;
using System.Collections.Concurrent; using System.Collections.Generic; using System.Management.Automation; namespace Sqlcollaborative.Dbatools.Message { /// <summary> /// Provides static information storage for logging related settings, as well as housing the logging queues. /// </summary> public static class LogHost { #region Defines /// <summary> /// The maximum numbers of error records maintained in-memory. /// </summary> public static int MaxErrorCount = 128; /// <summary> /// The maximum number of messages that can be maintained in the in-memory message queue /// </summary> public static int MaxMessageCount = 1024; /// <summary> /// The maximum size of a given logfile. When reaching this limit, the file will be abandoned and a new log created. Set to 0 to not limit the size. /// </summary> public static int MaxMessagefileBytes = 5242880; // 5MB /// <summary> /// The maximum number of logfiles maintained at a time. Exceeding this number will cause the oldest to be culled. Set to 0 to disable the limit. /// </summary> public static int MaxMessagefileCount = 5; /// <summary> /// The maximum size all error files combined may have. When this number is exceeded, the oldest entry is culled. /// </summary> public static int MaxErrorFileBytes = 20971520; // 20MB /// <summary> /// This is the upper limit of length all items in the log folder may have combined across all processes. /// </summary> public static int MaxTotalFolderSize = 104857600; // 100MB /// <summary> /// Path to where the logfiles live. /// </summary> public static string LoggingPath; /// <summary> /// Any logfile older than this will automatically be cleansed /// </summary> public static TimeSpan MaxLogFileAge = new TimeSpan(7, 0, 0, 0); /// <summary> /// Governs, whether a log file for the system messages is written /// </summary> public static bool MessageLogFileEnabled = true; /// <summary> /// Governs, whether a log of recent messages is kept in memory /// </summary> public static bool MessageLogEnabled = true; /// <summary> /// Governs, whether log files for errors are written /// </summary> public static bool ErrorLogFileEnabled = true; /// <summary> /// Governs, whether a log of recent errors is kept in memory /// </summary> public static bool ErrorLogEnabled = true; #endregion Defines #region Queues private static ConcurrentQueue<DbatoolsExceptionRecord> ErrorRecords = new ConcurrentQueue<DbatoolsExceptionRecord>(); private static ConcurrentQueue<LogEntry> LogEntries = new ConcurrentQueue<LogEntry>(); /// <summary> /// The outbound queue for errors. These will be processed and written to xml /// </summary> public static ConcurrentQueue<DbatoolsExceptionRecord> OutQueueError = new ConcurrentQueue<DbatoolsExceptionRecord>(); /// <summary> /// The outbound queue for logs. These will be processed and written to logfile /// </summary> public static ConcurrentQueue<LogEntry> OutQueueLog = new ConcurrentQueue<LogEntry>(); #endregion Queues #region Access Queues /// <summary> /// Retrieves a copy of the Error stack /// </summary> /// <returns>All errors thrown by functions using the message or flowcontrol system</returns> public static DbatoolsExceptionRecord[] GetErrors() { DbatoolsExceptionRecord[] temp = new DbatoolsExceptionRecord[ErrorRecords.Count]; ErrorRecords.CopyTo(temp, 0); return temp; } /// <summary> /// Retrieves a copy of the message log /// </summary> /// <returns>All messages logged this session.</returns> public static LogEntry[] GetLog() { LogEntry[] temp = new LogEntry[LogEntries.Count]; LogEntries.CopyTo(temp, 0); return temp; } /// <summary> /// Write an error record to the log /// </summary> /// <param name="Record">The actual error record as powershell wrote it</param> /// <param name="FunctionName">The name of the function writing the error</param> /// <param name="ModuleName">The name of the module the function writing the error came from</param> /// <param name="Tags">The tags that were assigned to the error event</param> /// <param name="Timestamp">When was the error written</param> /// <param name="Message">What message was passed to the user</param> /// <param name="Runspace">The runspace the message was written from</param> /// <param name="ComputerName">The computer the error was written on</param> public static void WriteErrorEntry(ErrorRecord[] Record, string FunctionName, string ModuleName, List<string> Tags, DateTime Timestamp, string Message, Guid Runspace, string ComputerName) { DbatoolsExceptionRecord tempRecord = new DbatoolsExceptionRecord(Runspace, ComputerName, Timestamp, FunctionName, ModuleName, Tags, Message); foreach (ErrorRecord rec in Record) { tempRecord.Exceptions.Add(new DbatoolsException(rec, FunctionName, Timestamp, Message, Runspace, ComputerName)); } if (ErrorLogFileEnabled) { OutQueueError.Enqueue(tempRecord); } if (ErrorLogEnabled) { ErrorRecords.Enqueue(tempRecord); } DbatoolsExceptionRecord tmp; while ((MaxErrorCount > 0) && (ErrorRecords.Count > MaxErrorCount)) { ErrorRecords.TryDequeue(out tmp); } } /// <summary> /// Write a new entry to the log /// </summary> /// <param name="Message">The message to log</param> /// <param name="Type">The type of the message logged</param> /// <param name="Timestamp">When was the message generated</param> /// <param name="FunctionName">What function wrote the message</param> /// <param name="ModuleName">What module did the function writing this message come from?</param> /// <param name="Tags">The tags that were applied to the message</param> /// <param name="Level">At what level was the function written</param> /// <param name="Runspace">The runspace the message is coming from</param> /// <param name="ComputerName">The computer the message was generated on</param> /// <param name="File">The file from which the message was written</param> /// <param name="Line">The line on which the message was written</param> /// <param name="TargetObject">The object associated with a given message.</param> /// <param name="CallStack">The callstack at the moment the message was written.</param> /// <param name="Username">The name of the user under which the code being executed</param> /// <returns>The entry that is being written</returns> public static LogEntry WriteLogEntry(string Message, LogEntryType Type, DateTime Timestamp, string FunctionName, string ModuleName, List<string> Tags, MessageLevel Level, Guid Runspace, string ComputerName, string File, int Line, IEnumerable<CallStackFrame> CallStack, string Username, object TargetObject = null) { LogEntry temp = new LogEntry(Message, Type, Timestamp, FunctionName, ModuleName, Tags, Level, Runspace, ComputerName, TargetObject, File, Line, CallStack, Username); if (MessageLogFileEnabled) { OutQueueLog.Enqueue(temp); } if (MessageLogEnabled) { LogEntries.Enqueue(temp); } LogEntry tmp; while ((MaxMessageCount > 0) && (LogEntries.Count > MaxMessageCount)) { LogEntries.TryDequeue(out tmp); } return temp; } #endregion Access Queues } } |