Permalink
Switch branches/tags
Nothing to show
Find file
Fetching contributors…
Cannot retrieve contributors at this time
76 lines (58 sloc) 2.78 KB

LogWatch

Minimalistic viewer for NLog, Log4Net and others.

or download binaries

LogWatch allows you to view output from NLog and Log4Net loggers.

Features

  • Designed to handle large log files (hundreds of megabytes, it doesn't read all the data into memory)
  • Live file streaming support (view files that are currently being updated by the logger)
  • Built-in support for CSV and Log4J XML formats
  • Automatic log format selection
  • Receives log records via network
  • Provides quick jump to a next Trace/Debug/Info/Warn/Error/Fatal record functionality
  • Search using simple text search or regular expressions (press Ctrol+F to activate)
  • Ability to define custom log parser using Lex syntax

Sources

LogWatch has built-in support for the following log sources:

  • File source
  • UDP source

When using file source LogWatch sets a monitor on the file and provides live updates on the records.

Formats

The application supports the following log formats out of the box:

LogWatch automatically determines format of the source.

CSV delimeter can be ; or ,. The log file must have header with some of the following feillds (case sensitive):

time
message
logger
level
exception

Here is an example configuration of CSV layout for NLog:

<target name="file" xsi:type="File" encoding="utf-8" fileName="mylog.log">
  <layout xsi:type="CsvLayout">
    <column name="time" layout="${longdate}" />
    <column name="message" layout="${message}" />
    <column name="logger" layout="${logger}" />
    <column name="level" layout="${level}" />
    <column name="exception" layout="${exception:format=ToString}" />
  </layout>
</target>

Log4J XML is the default format for NLogViewer. Here is an example configuration for NLog:

<target name="viewer" xsi:type="NLogViewer" address="udp://127.0.0.1:13370" includeNLogData="true">
  <parameter name="exception" layout="${exception:format=ToString}"/>
</target>

NLogViewer sends records via UDP in Log4J XML format.

TODO

  • documentation
  • custom log record properties