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/WCFWebApi/src/Microsoft.Server.Common/Microsoft/Server/Common/TraceLevelHelper.cs

#
C# | 96 lines | 77 code | 6 blank | 13 comment | 3 complexity | f7afce1dcfed7fdabcb2a24941e22c52 MD5 | raw file
Possible License(s): CC-BY-SA-3.0, Apache-2.0 
    

  1. //----------------------------------------------------------------

    2. 

  2. // Copyright (c) Microsoft Corporation.  All rights reserved.

    3. 

  3. //----------------------------------------------------------------

    4. 

  4. 

    5. 

  5. namespace Microsoft.Server.Common

    6. 

  6. {

    7. 

  7.     using System.Diagnostics;

    8. 

  8. 

    9. 

  9.     /// <remarks>

    10. 

  10.     /// dmetzgar (11/15/10, CSDMain 194940) - Previously, this code first checked that the opcode was set to informational.  If not, it would check

    11. 

  11.     /// the opcode name for start, stop, suspend, or resume and use that or return Information otherwise.  This does not work well with the latest 

    12. 

  12.     /// ETW changes where almost every event has a task and opcode.  With the old logic, if an opcode is set on the event with a level such as 

    13. 

  13.     /// warning or error, the level would be incorrectly reported in diagnostic tracing as informational.  Also, start/stop/suspend/resume events 

    14. 

  14.     /// have an overloaded meaning in diagnostic tracing that the svctraceviewer would misinterpret.  To keep diagnostic tracing from breaking, this

    15. 

  15.     /// class now checks for start/stop/suspend/resume opcodes and returns the level if any of those do not match.  Furthermore, any events defined 

    16. 

  16.     /// that are shared between diagnostics and ETW should not use start/stop/suspend/resume opcodes unless explicitly intended for use in 

    17. 

  17.     /// diagnostics tracing.

    18. 

  18.     /// </remarks>

    19. 

  19.     public static class TraceLevelHelper

    20. 

  20.     {

    21. 

  21.         static TraceEventType[] EtwLevelToTraceEventType = { TraceEventType.Critical, TraceEventType.Critical, TraceEventType.Error,

    22. 

  22.                 TraceEventType.Warning, TraceEventType.Information, TraceEventType.Verbose

    23. 

  23.             };

    24. 

  24. 

    25. 

  25.         public static TraceEventType GetTraceEventType(byte level, byte opCode)

    26. 

  26.         {

    27. 

  27.             switch (opCode)

    28. 

  28.             {

    29. 

  29.                 case (byte)TraceEventOpcode.Start:

    30. 

  30.                     return TraceEventType.Start;

    31. 

  31.                 case (byte)TraceEventOpcode.Stop:

    32. 

  32.                     return TraceEventType.Stop;

    33. 

  33.                 case (byte)TraceEventOpcode.Suspend:

    34. 

  34.                     return TraceEventType.Suspend;

    35. 

  35.                 case (byte)TraceEventOpcode.Resume:

    36. 

  36.                     return TraceEventType.Resume;

    37. 

  37.                 default:

    38. 

  38.                     return EtwLevelToTraceEventType[(int)level];

    39. 

  39.             }

    40. 

  40.         }

    41. 

  41. 

    42. 

  42.         public static TraceEventType GetTraceEventType(TraceEventLevel level)

    43. 

  43.         {

    44. 

  44.             return EtwLevelToTraceEventType[(int)level];

    45. 

  45.         }

    46. 

  46. 

    47. 

  47.         public static TraceEventType GetTraceEventType(byte level)

    48. 

  48.         {

    49. 

  49.             return EtwLevelToTraceEventType[(int)level];

    50. 

  50.         }

    51. 

  51. 

    52. 

  52.         public static string LookupSeverity(TraceEventLevel level, TraceEventOpcode opCode)

    53. 

  53.         {

    54. 

  54.             string severity;

    55. 

  55.             switch (opCode)

    56. 

  56.             {

    57. 

  57.                 case TraceEventOpcode.Start:

    58. 

  58.                     severity = "Start";

    59. 

  59.                     break;

    60. 

  60.                 case TraceEventOpcode.Stop:

    61. 

  61.                     severity = "Stop";

    62. 

  62.                     break;

    63. 

  63.                 case TraceEventOpcode.Suspend:

    64. 

  64.                     severity = "Suspend";

    65. 

  65.                     break;

    66. 

  66.                 case TraceEventOpcode.Resume:

    67. 

  67.                     severity = "Resume";

    68. 

  68.                     break;

    69. 

  69.                 default:

    70. 

  70.                     switch (level)

    71. 

  71.                     {

    72. 

  72.                         case TraceEventLevel.Critical:

    73. 

  73.                             severity = "Critical";

    74. 

  74.                             break;

    75. 

  75.                         case TraceEventLevel.Error:

    76. 

  76.                             severity = "Error";

    77. 

  77.                             break;

    78. 

  78.                         case TraceEventLevel.Warning:

    79. 

  79.                             severity = "Warning";

    80. 

  80.                             break;

    81. 

  81.                         case TraceEventLevel.Informational:

    82. 

  82.                             severity = "Information";

    83. 

  83.                             break;

    84. 

  84.                         case TraceEventLevel.Verbose:

    85. 

  85.                             severity = "Verbose";

    86. 

  86.                             break;

    87. 

  87.                         default:

    88. 

  88.                             severity = level.ToString();

    89. 

  89.                             break;

    90. 

  90.                     }

    91. 

  91.                     break;

    92. 

  92.             }

    93. 

  93.             return severity;

    94. 

  94.         }

    95. 

  95.     }

    96. 

  96. }

    97. 

  97.