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The OSGI Log Reader allows the Aspire system to log all messages with a severity above debug to a single file. The OSGI log reader is a component itself and uses the standard component logging and therefore:
- Messages are logged at various levels to a specific file
- The last n messages are kept in memory and can be reported back via the status page
- The log file may be rotated on demand while the log reader is running
All log files are written under the $ASPIRE_HOME directory. The actual path for the log file is configured in the component's XML configuration. Log files are rotated on a daily basis, or on a configurable size limit. Rotated log files receive a time stamp upon rotation. The last n messages are kept locally for display. Messages kept locally (for view via the status page) are truncated to 200 characters.
| OSGI Log Reader | |
|---|---|
| Factory Name | com.searchtechnologies.aspire:aspire-tools |
| subType | feederOverview |
| Inputs | OSGI log reader service |
| Outputs | Log files |
Configuration
| Element | Type | Default | Description |
|---|---|---|---|
| logfile | string | log/aspireOSGISystem.log | The name of the file to write log messages to. |
| maxFileSize | int | 10Mb | The maximum size of the log file before automatic rotation to a new file. |
| keepMessages | int | 1000 | The number of messages to retain locally for display via the status page. |
| minLogLevel | string | info | The minimum log level message written to the log file. Change the value to warn to prevent info message from being written to the log file. |
Example Configurations
Simple
<component name="log" subType="osgiLogReader" factoryName="aspire-tools">
<logFile>log/aspireOSGIlog.log</logFile>
<maxFileSize>209715200</maxFileSize>
</component>
Complex
<component name="log" subType="osgiLogReader" factoryName="aspire-tools">
<logFile>log/aspireOSGIlog.log</logFile>
<maxFileSize>2097152000</maxFileSize>
<keepMessages>2000</keepMessages>
<minLogLevel>warn</minLogLevel>
</component>
Controlling the OSGI Log Reader via the component
In addition to the view and rotate the log (see Logging) you may also:
- Change the number of messages kept locally for display by issuing the command keep to the component and adding the parameter numMsg=
e.g., http://blade3:50505/aspire/systemCommon/log?cmd=keep&numMsg=1000
- Change the minimum log message level written to the log file by issuing the command minLevel to the component and adding the parameter level=
e.g., http://blade3:50505/aspire/systemCommon/log?cmd=minLevel&level=warn
- Cause the log file to be rotated by issuing the command rotate to the component
e.g., http://blade3:50505/aspire/systemCommon/log?cmd=rotate
Overview
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