KGS Logger Plugin
About
This article describes the KGS Logger Plugin for OSGi based KGS products.
Content
Introduction
Installation
Our gitlab service is creating a jar. This jar is used in our delivered war files. If you have an running tomcat and deployed KGS Logger bundle you can enter the OSGi Bundles view and use the “Install/Update” button in order to upload a newer one.
Configuration
The configuration is made normally by OSGi web interface. But if there is already a configuration you can find the logger configuration also inside the file system.
UI
The log file configuration can be accessed through the OSGi configuration menu:
OSGi → Configuration:
Click on the name “KGS File Logger” or use the edit button to enter the configuration.
The following details may be specified:
the values can be adjusted according to the following table:
Field | Meaning | Default |
|---|---|---|
Date Time Format | The date format at the beginning of every log line | yyyy-MM-dd HH:mm:ss a |
Keep LogFiles (Days) | If you choose the rotation mode 1, the log file is rotated daily. Old files are moved to a sub folder structure with the date. The parameter specifies how long the old log files are stored before they will be deleted. | 0 |
LogFile Size (Mb) | If you choose the rotation mode 2, when the log file gets bigger than the adjusted size the file is renamed to FILENAME.log.bak and a new log file with configured log file name is startet. If there is a old bak file it will be deleted first. This parameter specifies for this option the size when the file is renamed. | 10 |
LogFilename | the name of the log file | Logger.txt |
Rotation Mode | valid values are 0,1,2 0 - no rotation at all 1 - “rotate” log => every day a new log file and old log files are moved to a date dependent sub folder hierarchy 2 - “roll” log => if max size is reached, file is renamed to a bak file | 1 |
Synchronous Logging | 0 | 1 | 0 |
Timezone | used for the logging entries. Used in TimeZone.getTimeZone() | local |
WorkingDirectory | where the log files are stored |
|
Hide OSGI Framework Logs | prevents not useful osgi framwork logs | true |
Hide Method Context | removes the Context: <class> from every log entry | true |
File
If you want to edit the log configuration by file, take into acount that the config change takes place only after tomcat restart.
The config located in: $TOMCAT_HOME/webapps/$WEBAPP/conf/logger/KGS File Logger.cfg and look like:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE properties SYSTEM "http://java.sun.com/dtd/properties.dtd">
<properties>
<comment>KGS Admin Bundle Configuration</comment>
<entry key="Common.LogFile Size (Mb)">1</entry>
<entry key="Common.Synchronous Logging)">true</entry>
<entry key="Common.Keep LogFiles (Days)">2</entry>
<entry key="Common.Date Time Format">yyyy-MM-dd HH:mm:ss a</entry>
<entry key="Common.LogFilename">DocumentRouter.log</entry>
<entry key="Common.WorkingDirectory">C:\Program Files\Tomcat9\logs</entry>
<entry key="Common.Rotation Mode">1</entry>
<entry key="Common.Timezone">local</entry>
<entry key="Common.LockGUISave">false</entry>
</properties>