public void Parse()
{
using (var s = new MemoryStream())
using (var w = new StreamWriter(s))
{
var lines = @"<log4j:event logger=""HomeController"" timestamp=""1361528145331"" level=""ERROR"" thread=""91"">
<log4j:message>error</log4j:message>
<log4j:properties>
<log4j:data name=""log4net:UserName"" value=""SOMEDOMAIN\someuser"" />
<log4j:data name=""log4net:Identity"" value=""44045"" />
<log4j:data name=""log4jmachinename"" value=""somemachine"" />
<log4j:data name=""log4japp"" value=""/LM/W3SVC/1"" />
<log4j:data name=""log4net:HostName"" value=""SOMEHOST"" />
</log4j:properties>
<log4j:locationInfo class=""MyController"" method=""Log"" file=""C:\project\MyController.cs"" line=""99"" />
</log4j:event>
";
w.Write(lines);
w.Flush();
s.Position = 0;
var entry = new LogEntryParser().Parse(s).Single();
Assert.Equal("44045", entry.Identity);
}
}
public void Parse2()
{
using (var s = new MemoryStream())
using (var w = new StreamWriter(s))
{
var line =
@"<log4j:event logger=""IntegrationTests.LogTests"" timestamp=""1300909721869"" level=""ERROR"" thread=""7""><log4j:message>msg</log4j:message><log4j:properties><log4j:data name=""log4net:UserName"" value=""AWESOMEMACHINE\Administrator"" /><log4j:data name=""log4jmachinename"" value=""AWESOMEMACHINE"" /><log4j:data name=""log4japp"" value=""IsolatedAppDomainHost: IntegrationTests"" /><log4j:data name=""log4net:HostName"" value=""AWESOMEMACHINE"" /></log4j:properties><log4j:throwable>System.Exception: test</log4j:throwable><log4j:locationInfo class=""IntegrationTests.LogTests"" method=""TestLog"" file=""C:\projects\LogViewer\IntegrationTests\LogTests.cs"" line=""27"" /></log4j:event>";
w.Write(line);
w.Flush();
s.Position = 0;
var entry = new LogEntryParser().Parse(s).Single();
Assert.Equal("System.Exception: test", entry.Data.ExceptionString);
}
}
public void ParseStream()
{
using (var s = new MemoryStream())
using (var w = new StreamWriter(s))
{
w.Write(_buffer);
w.Flush();
s.Position = 0;
var entry = new LogEntryParser().Parse(s).Single();
Assert.That(entry.Data.Level.Name, Is.EqualTo("ERROR"));
Assert.That(entry.HostName, Is.EqualTo(@"AWESOMEMACHINE"));
Assert.That(entry.Data.Domain, Is.EqualTo(@"IsolatedAppDomainHost: IntegrationTests"));
Assert.That(entry.Data.Message, Is.EqualTo("msg"));
Assert.That(entry.Class, Is.EqualTo("IntegrationTests.LogTests"));
Assert.That(entry.Method, Is.EqualTo("TestLog"));
Assert.That(entry.Line, Is.EqualTo("19"));
Assert.That(entry.File, Is.EqualTo(@"C:\projects\LogViewer\IntegrationTests\LogTests.cs"));
}
}
public LogFileReaderBase(FileWithPosition file, LogEntryParser parser = null, IInvoker invoker = null)
{
this.File = file;
this.parser = parser ?? new LogEntryParser();
this.invoker = invoker ?? new DirectInvoker();
}
public Watcher(FileWithPosition file, LogEntryParser parser = null, IInvoker invoker = null)
: base(file,parser,invoker)
{
}
public Poller(FileWithPosition file, long duration, LogEntryParser parser = null, IInvoker invoker = null)
: base(file,parser,invoker)
{
this.duration = duration;
}
public void ParseStreamAtPosition()
{
long p = 0;
var path = Path.GetTempFileName();
using (var s = new FileStream(path,
FileMode.Truncate,
FileAccess.ReadWrite))
using (var w = new StreamWriter(s))
{
w.Write(_buffer);
w.Flush();
s.Position = 0;
var entry = new LogEntryParser().Parse(s).Single();// read written entry
p = s.Position;
}
using (var s = new FileStream(path,
FileMode.Append,
FileAccess.Write))
using (var w = new StreamWriter(s))
{
w.Write(_buffer);
w.Flush();
}
using (var s = FileUtil.OpenReadOnly(path, position: p))
{
var entry = new LogEntryParser().Parse(s).Single();
Assert.That(entry.Data.Level.Name, Is.EqualTo("ERROR"));
Assert.That(entry.HostName, Is.EqualTo(@"AWESOMEMACHINE"));
Assert.That(entry.Data.Domain, Is.EqualTo(@"IsolatedAppDomainHost: IntegrationTests"));
Assert.That(entry.Data.Message, Is.EqualTo("msg"));
Assert.That(entry.Class, Is.EqualTo("IntegrationTests.LogTests"));
Assert.That(entry.Method, Is.EqualTo("TestLog"));
Assert.That(entry.Line, Is.EqualTo("19"));
Assert.That(entry.File, Is.EqualTo(@"C:\projects\LogViewer\IntegrationTests\LogTests.cs"));
}
}
public void ParseStreamAtPositionShouldThrowException()
{
long p = 0;
var path = Path.GetTempFileName();
using (var s = new FileStream(path,
FileMode.Truncate,
FileAccess.ReadWrite))
using (var w = new StreamWriter(s))
{
w.Write(_buffer);
w.Flush();
s.Position = 0;
var entry = new LogEntryParser().Parse(s).Single();// read written entry
p = s.Position;
}
Assert.Throws<OutOfBoundsException>(() =>
{
using (var s = FileUtil.OpenReadOnly(path, position: p * 10))
{
new LogEntryParser().Parse(s);
}
});
}
public void Parse_with_text_element()
{
var line = @"<log4j:event logger=""installrelease"" timestamp=""1388750967872"" level=""ERROR"" thread=""""><log4j:NDC></log4j:NDC><log4j:message>Caught Errno::EACCES: Permission denied - filesomething
C:/Ruby193/lib/ruby/gems/1.9.1/gems/someliblib/lib/libloblob/libloblob.rb:42:in `block in download'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/someliblib/lib/libloblob/libloblob.rb:41:in `each'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/someliblib/lib/libloblob/libloblob.rb:41:in `download'
install_release.rb:92:in `block in get_latest!'</log4j:message><log4j:throwable>Caught Errno::EACCES: Permission denied - file
C:/Ruby193/lib/ruby/gems/1.9.1/gems/someliblib/lib/libloblob/libloblob.rb:42:in `block in download'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/someliblib/lib/libloblob/libloblob.rb:41:in `each'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/someliblib/lib/libloblob/libloblob.rb:41:in `download'
install_release.rb:92:in `block in get_latest!'</log4j:throwable><log4j:locationInfo class="""" method="""" file="""" line=""""/><log4j:properties></log4j:properties></log4j:event>";
using (var s = new MemoryStream())
using (var w = new StreamWriter(s))
{
w.Write(line);
w.Flush();
s.Position = 0;
var entry = new LogEntryParser().Parse(s).Single();
Assert.Equal("ERROR", entry.Data.Level.Name);
Assert.True(entry.Data.Message.Contains(@"Caught Errno::EACCES: Permission denied - filesomething"));
Assert.True(entry.Data.Message.Contains(@"install_release.rb:92:in `block in get_latest!'"));
}
}
public void ParseFaulty()
{
using (var s = FileUtil.OpenReadOnly("test.xml"))
{
var entry = new LogEntryParser().Parse(s).Single();
Assert.True(entry.Data.Message.Contains("Translation for 'Detta ska jag g"), "translation");
Assert.True(entry.Data.Message.Contains("ra...' in module Todo for culture sv-SE does not exist."), "in module");
}
}
public void ParseStream()
{
using (var s = new MemoryStream())
using (var w = new StreamWriter(s))
{
w.Write(_buffer);
w.Flush();
s.Position = 0;
var entry = new LogEntryParser().Parse(s).Single();
Assert.Equal("ERROR", entry.Data.Level.Name);
Assert.Equal(@"AWESOMEMACHINE\Administrator", entry.Data.UserName);
Assert.Equal(@"AWESOMEMACHINE", entry.MachineName);
Assert.Equal(@"AWESOMEMACHINE", entry.HostName);
Assert.Equal(@"IsolatedAppDomainHost: IntegrationTests", entry.Data.Domain);
Assert.Equal("test", entry.Data.Message);
Assert.Equal("IntegrationTests.LogTests", entry.Class());
Assert.Equal("TestLog", entry.Method());
Assert.Equal("18", entry.Line());
Assert.Equal(@"C:\projects\LogViewer\IntegrationTests\LogTests.cs", entry.File());
}
}
public IEnumerable<LogEntry> Read(LogEntryParser parser)
{
using (var file = FileUtil.OpenReadOnly(FileName, position))
{
foreach (var item in parser.Parse(file))
{
yield return item;
}
position = file.Position;
}
}
private void constructPaginator()
{
LogEntryParser log = new LogEntryParser();
FileStream stream = new FileStream(debugFileDB, FileMode.Open);
IEnumerable<LogViewer.LogEntry> loge = log.Parse(stream);
stream.Close();
debugData = new List<LogViewer.LogEntry>(loge);
debugData.Reverse();
this.totalRows = debugData.Count;
this.totalPages = (this.totalRows + this.pageSize - 1) / this.pageSize;
}
static void Main(string[] args)
{
var files = new List<string>();
int monitor = 0;
int? lines = null;
var watch = false;
PatternLayout layout=null;
var help = false;
var p = new OptionSet() {
{ "f|file=", v => { files.Add(v); } },
{ "m|monitor=", v => { monitor=Int32.Parse(v);}},
{ "w|watch", v => { watch = true;}},
{ "l|lines=", v => { lines=Int32.Parse(v);}},
{ "h|?|help", v => { help = true;}},
{ "y|layout=",v=> { layout=new PatternLayout(v);}}
};
var detectedFiles = args
.Where(a=>!(a.StartsWith("-") || a.StartsWith("/")))
.Where(a=> Uri.IsWellFormedUriString(a, UriKind.RelativeOrAbsolute))
.Where(a=> File.Exists(a));
// does not seem to work. add tests
files.AddRange(detectedFiles);
p.Parse(args);
Action<LogEntry> showentry;
if (null != layout)
{
showentry = l => layout.Format(Console.Out, new LoggingEvent(l.Data));
}
else
{
showentry = l => Console.WriteLine(l.Data.Message);
}
if (help)
{
Console.WriteLine(@"Usage:
-f|file={a filename}
The file to watch, monitor or
-l|lines={tail x lines}
Display the last x lines. Defaults to 10 lines.
-y|layout={pattern layout syntax as defined in log4net.Layout.PatternLayout}
-h|?|help
Display help
For instance to :
LogTail.exe -f=logfile.xml
LogTail.exe -file=logfile.xml
");
return;
}
if (watch)
{
Do(new Watcher(new FileWithPosition(files.Single()))
{
logentry = showentry
});
return;
}
if (monitor > 0)
{
Do(new Poller(new FileWithPosition(files.Single()), monitor)
{
logentry = showentry
});
return;
}
if (files.Any()){
TailFiles(lines ?? 10, files, showentry);
return;
}
else
{
Console.WriteLine("No files, listening to standard input.");
using (Stream stdin = Console.OpenStandardInput())
using (Stream stdout = Console.OpenStandardOutput())
using (StreamWriter writer = new StreamWriter(stdout))
{
var items = new LogEntryParser().Parse(stdin).ToArray();
foreach (var logEntry in items.Skip(items.Count() - (lines??10)))
{
writer.WriteLine(logEntry.Data.Message);
}
}
return;
}
}
private static void TailFiles(int lines, List<string> files, Action<LogEntry> showentry)
{
foreach (var fileName in files)
{
using (var file = FileUtil.OpenReadOnly(fileName))
{
var items = new LogEntryParser().Parse(file)
.ToArray();
foreach (var logEntry in items.Skip(items.Count() - lines))
{
showentry(logEntry);
}
}
}
}
static void Main(string[] args)
{
var files = new List<string>();
int monitor = 0;
int? lines = null;
var watch = false;
LayoutSkeleton layout = null;
var help = false;
var p = new OptionSet() {
{ "i|file=", v => { files.Add(v); } },
{ "m|monitor=", v => { monitor=ParseInterval(v);}},
{ "w|watch", v => { watch = true;}},
{ "l|lines=", v => { lines=Int32.Parse(v);}},
{ "h|?|help", v => { help = true;}},
{ "y|layout=",v=> { layout=new PatternLayout(v);}},
{ "f|format=", v=> { layout = GetFormatLayout(v); }}
};
var detectedFiles = args
.Where(a => !(a.StartsWith("-") || a.StartsWith("/")))
.Where(a => File.Exists(a));
files.AddRange(detectedFiles);
p.Parse(args);
if (layout == null)
{
layout = new SimpleLayout();
}
Action<TextWriter,LogEntry> showentry = (writer, l) => layout.Format(writer, new LoggingEvent(l.Data));
if (help)
{
Console.WriteLine(@"Usage:
-i|file={a filename}
The (input) file to watch, monitor or
-l|lines={tail x lines}
Display the last x lines. Defaults to 10 lines.
-y|layout={pattern layout syntax as defined in log4net.Layout.PatternLayout}
-f|format={a named layout format}
The available formats are:
-f=minusminus Information delimited by newline and ----------------------
-h|?|help
Display help
-w|watch
Use file system watcher to watch file
-m|monitor=seconds
Use polling to check for changes of the file.
For instance to :
LogTail.exe -f=logfile.xml
LogTail.exe -file=logfile.xml
If you are in powershell (or cygwin) you can do the following:
cat yourlogfile.xml | LogTail.exe
");
return;
}
if (watch)
{
var w = new Watcher<LogEntry>(new FileWithPosition(files.Single()), new LogEntryParser());
w.LogEntry += (entry) => showentry(Console.Out, entry);
Do(w);
return;
}
if (monitor > 0)
{
var w = new Poller<LogEntry>(new FileWithPosition(files.Single()), monitor, new LogEntryParser());
w.LogEntry += (entry) => showentry(Console.Out, entry);
Do(w);
return;
}
if (files.Any())
{
TailFiles(lines ?? 10, files, (entry) => showentry(Console.Out, entry));
return;
}
else
{
Console.WriteLine("No files, listening to standard input.");
using (Stream stdin = Console.OpenStandardInput())
using (Stream stdout = Console.OpenStandardOutput())
using (StreamWriter writer = new StreamWriter(stdout))
{
var items = new LogEntryParser().Parse(stdin).ToArray();
foreach (var logEntry in items.Skip(items.Count() - (lines ?? 10)))
{
showentry(writer, logEntry);
}
}
return;
}
}
