|
23 | 23 | using log4net.Core; |
24 | 24 | using log4net.Util; |
25 | 25 |
|
26 | | -namespace SampleAppendersApp.Appender |
| 26 | +namespace SampleAppendersApp.Appender; |
| 27 | + |
| 28 | +/// <summary> |
| 29 | +/// Appender that forwards LoggingEvents asynchronously |
| 30 | +/// </summary> |
| 31 | +/// <remarks> |
| 32 | +/// This appender forwards LoggingEvents to a list of attached appenders. |
| 33 | +/// The events are forwarded asynchronously using the ThreadPool. |
| 34 | +/// This allows the calling thread to be released quickly, however it does |
| 35 | +/// not guarantee the ordering of events delivered to the attached appenders. |
| 36 | +/// </remarks> |
| 37 | +public sealed class AsyncAppender : IAppender, IBulkAppender, IOptionHandler, IAppenderAttachable |
27 | 38 | { |
28 | | - /// <summary> |
29 | | - /// Appender that forwards LoggingEvents asynchronously |
30 | | - /// </summary> |
31 | | - /// <remarks> |
32 | | - /// This appender forwards LoggingEvents to a list of attached appenders. |
33 | | - /// The events are forwarded asynchronously using the ThreadPool. |
34 | | - /// This allows the calling thread to be released quickly, however it does |
35 | | - /// not guarantee the ordering of events delivered to the attached appenders. |
36 | | - /// </remarks> |
37 | | - public sealed class AsyncAppender : IAppender, IBulkAppender, IOptionHandler, IAppenderAttachable |
38 | | - { |
39 | | - private readonly object syncRoot = new(); |
| 39 | + private readonly object _syncRoot = new(); |
40 | 40 |
|
41 | | - /// <inheritdoc/> |
42 | | - public string Name { get; set; } = string.Empty; |
| 41 | + /// <inheritdoc/> |
| 42 | + public string Name { get; set; } = string.Empty; |
43 | 43 |
|
44 | | - /// <inheritdoc/> |
45 | | - public void ActivateOptions() |
46 | | - { } |
| 44 | + /// <inheritdoc/> |
| 45 | + public void ActivateOptions() |
| 46 | + { } |
47 | 47 |
|
48 | | - /// <inheritdoc/> |
49 | | - public FixFlags Fix { get; set; } = FixFlags.All; |
| 48 | + /// <inheritdoc/> |
| 49 | + public FixFlags Fix { get; set; } = FixFlags.All; |
50 | 50 |
|
51 | | - /// <inheritdoc/> |
52 | | - public void Close() |
| 51 | + /// <inheritdoc/> |
| 52 | + public void Close() |
| 53 | + { |
| 54 | + // Remove all the attached appenders |
| 55 | + lock (_syncRoot) |
53 | 56 | { |
54 | | - // Remove all the attached appenders |
55 | | - lock (syncRoot) |
56 | | - appenderAttachedImpl?.RemoveAllAppenders(); |
| 57 | + _appenderAttachedImpl?.RemoveAllAppenders(); |
57 | 58 | } |
| 59 | + } |
| 60 | + |
| 61 | + /// <inheritdoc/> |
| 62 | + public void DoAppend(LoggingEvent loggingEvent) |
| 63 | + { |
| 64 | + ArgumentNullException.ThrowIfNull(loggingEvent); |
| 65 | + loggingEvent.Fix = Fix; |
| 66 | + ThreadPool.QueueUserWorkItem(new WaitCallback(AsyncAppend), loggingEvent); |
| 67 | + } |
58 | 68 |
|
59 | | - /// <inheritdoc/> |
60 | | - public void DoAppend(LoggingEvent loggingEvent) |
| 69 | + /// <inheritdoc/> |
| 70 | + public void DoAppend(LoggingEvent[] loggingEvents) |
| 71 | + { |
| 72 | + ArgumentNullException.ThrowIfNull(loggingEvents); |
| 73 | + foreach (LoggingEvent loggingEvent in loggingEvents) |
61 | 74 | { |
62 | | - ArgumentNullException.ThrowIfNull(loggingEvent); |
63 | 75 | loggingEvent.Fix = Fix; |
64 | | - ThreadPool.QueueUserWorkItem(new WaitCallback(AsyncAppend), loggingEvent); |
65 | 76 | } |
66 | 77 |
|
67 | | - /// <inheritdoc/> |
68 | | - public void DoAppend(LoggingEvent[] loggingEvents) |
69 | | - { |
70 | | - ArgumentNullException.ThrowIfNull(loggingEvents); |
71 | | - foreach (LoggingEvent loggingEvent in loggingEvents) |
72 | | - loggingEvent.Fix = Fix; |
73 | | - ThreadPool.QueueUserWorkItem(new WaitCallback(AsyncAppend), loggingEvents); |
74 | | - } |
| 78 | + ThreadPool.QueueUserWorkItem(new WaitCallback(AsyncAppend), loggingEvents); |
| 79 | + } |
75 | 80 |
|
76 | | - private void AsyncAppend(object? state) |
| 81 | + private void AsyncAppend(object? state) |
| 82 | + { |
| 83 | + if (_appenderAttachedImpl != null) |
77 | 84 | { |
78 | | - if (appenderAttachedImpl != null) |
| 85 | + if (state is LoggingEvent loggingEvent) |
| 86 | + { |
| 87 | + _appenderAttachedImpl.AppendLoopOnAppenders(loggingEvent); |
| 88 | + } |
| 89 | + else if (state is LoggingEvent[] loggingEvents) |
79 | 90 | { |
80 | | - if (state is LoggingEvent loggingEvent) |
81 | | - appenderAttachedImpl.AppendLoopOnAppenders(loggingEvent); |
82 | | - else if (state is LoggingEvent[] loggingEvents) |
83 | | - appenderAttachedImpl.AppendLoopOnAppenders(loggingEvents); |
| 91 | + _appenderAttachedImpl.AppendLoopOnAppenders(loggingEvents); |
84 | 92 | } |
85 | 93 | } |
| 94 | + } |
86 | 95 |
|
87 | | - #region IAppenderAttachable Members |
| 96 | + #region IAppenderAttachable Members |
88 | 97 |
|
89 | | - /// <inheritdoc/> |
90 | | - public void AddAppender(IAppender appender) |
| 98 | + /// <inheritdoc/> |
| 99 | + public void AddAppender(IAppender appender) |
| 100 | + { |
| 101 | + ArgumentNullException.ThrowIfNull(appender); |
| 102 | + lock (_syncRoot) |
91 | 103 | { |
92 | | - ArgumentNullException.ThrowIfNull(appender); |
93 | | - lock (syncRoot) |
94 | | - (appenderAttachedImpl ??= new()).AddAppender(appender); |
| 104 | + (_appenderAttachedImpl ??= new()).AddAppender(appender); |
95 | 105 | } |
| 106 | + } |
96 | 107 |
|
97 | | - /// <inheritdoc/> |
98 | | - public AppenderCollection Appenders |
| 108 | + /// <inheritdoc/> |
| 109 | + public AppenderCollection Appenders |
| 110 | + { |
| 111 | + get |
99 | 112 | { |
100 | | - get |
| 113 | + lock (_syncRoot) |
101 | 114 | { |
102 | | - lock (syncRoot) |
103 | | - return appenderAttachedImpl?.Appenders ?? AppenderCollection.EmptyCollection; |
| 115 | + return _appenderAttachedImpl?.Appenders ?? AppenderCollection.EmptyCollection; |
104 | 116 | } |
105 | 117 | } |
| 118 | + } |
106 | 119 |
|
107 | | - /// <inheritdoc/> |
108 | | - public IAppender? GetAppender(string name) |
| 120 | + /// <inheritdoc/> |
| 121 | + public IAppender? GetAppender(string? name) |
| 122 | + { |
| 123 | + lock (_syncRoot) |
109 | 124 | { |
110 | | - lock (syncRoot) |
| 125 | + if (_appenderAttachedImpl is null || name is null) |
111 | 126 | { |
112 | | - if (appenderAttachedImpl is null || name is null) |
113 | | - return null; |
114 | | - |
115 | | - return appenderAttachedImpl.GetAppender(name); |
| 127 | + return null; |
116 | 128 | } |
| 129 | + |
| 130 | + return _appenderAttachedImpl.GetAppender(name); |
117 | 131 | } |
| 132 | + } |
118 | 133 |
|
119 | | - /// <inheritdoc/> |
120 | | - public void RemoveAllAppenders() |
| 134 | + /// <inheritdoc/> |
| 135 | + public void RemoveAllAppenders() |
| 136 | + { |
| 137 | + lock (_syncRoot) |
121 | 138 | { |
122 | | - lock (syncRoot) |
123 | | - if (appenderAttachedImpl is not null) |
124 | | - { |
125 | | - appenderAttachedImpl.RemoveAllAppenders(); |
126 | | - appenderAttachedImpl = null; |
127 | | - } |
| 139 | + if (_appenderAttachedImpl is not null) |
| 140 | + { |
| 141 | + _appenderAttachedImpl.RemoveAllAppenders(); |
| 142 | + _appenderAttachedImpl = null; |
| 143 | + } |
128 | 144 | } |
| 145 | + } |
129 | 146 |
|
130 | | - /// <inheritdoc/> |
131 | | - public IAppender? RemoveAppender(IAppender appender) |
| 147 | + /// <inheritdoc/> |
| 148 | + public IAppender? RemoveAppender(IAppender appender) |
| 149 | + { |
| 150 | + lock (_syncRoot) |
132 | 151 | { |
133 | | - lock (syncRoot) |
134 | | - if (appender is not null && appenderAttachedImpl is not null) |
135 | | - return appenderAttachedImpl.RemoveAppender(appender); |
136 | | - return null; |
| 152 | + if (appender is not null && _appenderAttachedImpl is not null) |
| 153 | + { |
| 154 | + return _appenderAttachedImpl.RemoveAppender(appender); |
| 155 | + } |
137 | 156 | } |
138 | 157 |
|
139 | | - /// <inheritdoc/> |
140 | | - public IAppender? RemoveAppender(string name) |
| 158 | + return null; |
| 159 | + } |
| 160 | + |
| 161 | + /// <inheritdoc/> |
| 162 | + public IAppender? RemoveAppender(string name) |
| 163 | + { |
| 164 | + lock (_syncRoot) |
141 | 165 | { |
142 | | - lock (syncRoot) |
143 | | - if (name is not null && appenderAttachedImpl is not null) |
144 | | - return appenderAttachedImpl.RemoveAppender(name); |
145 | | - return null; |
| 166 | + if (name is not null && _appenderAttachedImpl is not null) |
| 167 | + { |
| 168 | + return _appenderAttachedImpl.RemoveAppender(name); |
| 169 | + } |
146 | 170 | } |
147 | 171 |
|
148 | | - #endregion |
149 | | - |
150 | | - private AppenderAttachedImpl? appenderAttachedImpl; |
| 172 | + return null; |
151 | 173 | } |
| 174 | + |
| 175 | + #endregion |
| 176 | + |
| 177 | + private AppenderAttachedImpl? _appenderAttachedImpl; |
152 | 178 | } |
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