migration from log4j to logback. help with specific log4j.xml property (CronTriggerPolicy>
Hello I am trying to migrate a application form log4j to logback. I do have the following property defined in the existing log4j2.xml file, I do not see any such equivalent in the logback.xml. *How do I specify something like a CronTriggerPolicy as shown below?* Any help would be appreciated. log4j2.xml <RollingFile name="myLog" fileName="app.log" filePattern"app.log.%d{yyyyMMdd_HHmmzz}Z.log> <Policies> * <CronTiggerPolicy schedule="0 0 * * 1 ?" evaluateOnStartup="true">* <SizeBasedTriggerPolicy size="10MB"/> </Policies> </RollingFile> Best regards Ani
Hi Ani, Logback does not support cron-like triggering. However, it supports triggering based on a date pattern, e.g "yyyy-MM-dd" The schedule "0 0 * * 1 ?" corresponds to first day of the week at midnight. The pattern "yyyy-ww" corresponds to the same triggering schedule. The link below provides more details: https://logback.qos.ch/manual/appenders.html#tbrpFileNamePattern I hope this helps, -- Ceki Gülcü Sponsoring SLF4J/logback/reload4j at https://github.com/sponsors/qos-ch On 2/12/2024 8:44 PM, Aniruddha Shevade via logback-user wrote:
Hello I am trying to migrate a application form log4j to logback. I do have the following property defined in the existing log4j2.xml file, I do not see any such equivalent in the logback.xml. *How do I specify something like a CronTriggerPolicy as shown below?* Any help would be appreciated.
log4j2.xml
<RollingFile name="myLog" fileName="app.log" filePattern"app.log.%d{yyyyMMdd_HHmmzz}Z.log> <Policies> * <CronTiggerPolicy schedule="0 0 * * 1 ?" evaluateOnStartup="true">* <SizeBasedTriggerPolicy size="10MB"/> </Policies> </RollingFile>
Best regards Ani
Hello Thanks for the answer. I am still a bit confused. If the logback FileNamePattern is "app.log.%d{yyyyMMdd_HHmmss}Z.log", would this by default mean its going to rollover every second? In other words , does the fileNamePattern define the rollover schedule? You mention using "yyyy-ww" to trigger a weekly Rollover, would this mean the fileName pattern should be made "app.log%d{yyyy-ww}Z.log" ? Is it possible to decouple the Name of the Rolled over log file and the tiriggering of RollOver ? What if Iwant a rollover every week , but the name of the Rolled Over file to have hhmmss as part of it? I Sorry if I have caused confusion here Best Regards Ani On Mon, Feb 12, 2024 at 12:36 PM Ceki Gulcu via logback-user < logback-user@qos.ch> wrote:
Hi Ani,
Logback does not support cron-like triggering. However, it supports triggering based on a date pattern, e.g "yyyy-MM-dd"
The schedule "0 0 * * 1 ?" corresponds to first day of the week at midnight. The pattern "yyyy-ww" corresponds to the same triggering schedule.
The link below provides more details:
https://logback.qos.ch/manual/appenders.html#tbrpFileNamePattern
I hope this helps,
-- Ceki Gülcü
Sponsoring SLF4J/logback/reload4j at https://github.com/sponsors/qos-ch
On 2/12/2024 8:44 PM, Aniruddha Shevade via logback-user wrote:
Hello I am trying to migrate a application form log4j to logback. I do have the following property defined in the existing log4j2.xml file, I do not see any such equivalent in the logback.xml. *How do I specify something like a CronTriggerPolicy as shown below?* Any help would be appreciated.
log4j2.xml
<RollingFile name="myLog" fileName="app.log" filePattern"app.log.%d{yyyyMMdd_HHmmzz}Z.log> <Policies> * <CronTiggerPolicy schedule="0 0 * * 1 ?" evaluateOnStartup="true">* <SizeBasedTriggerPolicy size="10MB"/> </Policies> </RollingFile>
Best regards Ani
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Responses inline. On 2/12/2024 10:56 PM, Aniruddha Shevade via logback-user wrote:
Hello Thanks for the answer. I am still a bit confused. If the logback FileNamePattern is "app.log.%d{yyyyMMdd_HHmmss}Z.log", would this by default mean its going to rollover every second? In other words , does the fileNamePattern define the rollover schedule?
That is correct, the fileNamePattern defines the rollover schedule.
You mention using "yyyy-ww" to trigger a weekly Rollover, would this mean the fileName pattern should be made "app.log%d{yyyy-ww}Z.log" ?
Yes. However, automatic file compression is enabled if the value of the fileNamePattern option ends with .gz or .zip but not Z.
Is it possible to decouple the Name of the Rolled over log file and the tiriggering of RollOver ? What if Iwant a rollover every week , but the name of the Rolled Over file to have hhmmss as part of it? I Sorry if I have caused confusion here
Complete decoupling is not possible however you can have multiple %d specifiers. See the link provided earlier.
Best Regards Ani
-- Ceki Gülcü Sponsoring SLF4J/logback/reload4j at https://github.com/sponsors/qos-ch
participants (2)
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Aniruddha Shevade -
Ceki Gulcu