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<a class="user-hover" rel="daniel.stankiewicz@asseco.pl" id="email_daniel.stankiewicz@asseco.pl" href="http://jira.qos.ch/secure/ViewProfile.jspa?name=daniel.stankiewicz%40asseco.pl" style="color:#326ca6;">Daniel Stankiewicz</a>
created <img src="http://jira.qos.ch/images/icons/bug.gif" height="16" width="16" border="0" align="absmiddle" alt="Bug"> <a style='color:#326ca6;text-decoration:none;' href='http://jira.qos.ch/browse/LOGBACK-721'>LOGBACK-721</a>
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<a style='color:#326ca6;text-decoration:none;' href='http://jira.qos.ch/browse/LOGBACK-721'><strong>SizeAndTimeBasedFNATP doesn't set timestamp in logged files after rollover triggered by maximum size</strong></a>
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<strong style="font-weight:normal;color:#505050;">Issue Type:</strong>
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<img src="http://jira.qos.ch/images/icons/bug.gif" height="16" width="16" border="0" align="absmiddle" alt="Bug"> Bug
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<strong style="font-weight:normal;color:#505050;">Affects Versions:</strong>
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1.0.6 </td>
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<strong style="font-weight:normal;color:#505050;">Assignee:</strong>
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<a class="user-hover" rel="logback-dev@qos.ch" id="email_logback-dev@qos.ch" href="http://jira.qos.ch/secure/ViewProfile.jspa?name=logback-dev%40qos.ch" style="color:#326ca6;">Logback dev list</a>
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<strong style="font-weight:normal;color:#505050;">Components:</strong>
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logback-core </td>
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<strong style="font-weight:normal;color:#505050;">Created:</strong>
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13/Jul/12 1:22 PM
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<strong style="font-weight:normal;color:#505050;">Description:</strong>
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I want log files to be placed in directories containing date and rolled over every day. Moreover I want log files to be of maximum size of, let's say, 10MB. Each time a new log file is created, I would like to have it timestamped. Unfortunately, SizeAndTimeBasedFNATP doesn't work like that. Here's my logback.xml:
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<?xml version="1.0" encoding="UTF-8"?>
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<configuration>
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<timestamp key="millisecond" datePattern="yyyyMMdd_HHmmssSSS"/>
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<appender name="SSR" class="ch.qos.logback.core.rolling.RollingFileAppender">
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<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
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<pattern>%p; %d; %t; %m; %n</pattern>
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</encoder>
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<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
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<fileNamePattern>d:/ssr/log/%d{yyyyMMdd}/%d{yyyyMMdd_HHmmssSSS,aux}_ssr.log</fileNamePattern>
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<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
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<maxFileSize>10MB</maxFileSize>
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</timeBasedFileNamingAndTriggeringPolicy>
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</rollingPolicy>
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</appender>
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<logger name="asseco.ssr" level="debug">
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<appender-ref ref="SSR"/>
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</logger>
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<root level="info"/>
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</configuration>
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It causes a first file to be created, let's say d:\ssr\log\20120713\20120713_131110712_ssr.log
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But after it reaches 10MB, it's not rotated, but log events are still appended to the same file.
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Adding token %i to pattern, for example d:/ssr/log/%d{yyyyMMdd}/%d{yyyyMMdd_HHmmssSSS,aux}_ssr.%i.log shows the reason of problems. In such a case logs are rolled every 10MB, but filenames follow the same pattern with the same timestamp instead of new timestamp for every file: 20120713_131353836_ssr.0.log, 20120713_131353836_ssr.1.log etc.
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The reason for this is that TimeBasedFileNamingAndTriggeringPolicyBase.dateInCurrentPeriod field doesn't get changed. Either it should change if rollback occurred triggered by maximum size or there should be another possibility of adding absolute timestamp which is calculated every time when it's needed.
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Using:
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<timestamp key="millisecond" datePattern="yyyyMMdd_HHmmssSSS"/>
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with pattern:
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<fileNamePattern>d:/ssr/log/%d{yyyyMMdd_HHmm}/${millisecond}_ssr.%i.log</fileNamePattern>
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doesn't help also, because in such a case timestamp is every time the same, even after rollback triggered by date change.
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<strong style="font-weight:normal;color:#505050;">Project:</strong>
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<a style="color:#326ca6;" href="http://jira.qos.ch/browse/LOGBACK">logback</a>
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<strong style="font-weight:normal;color:#505050;">Priority:</strong>
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<img src="http://jira.qos.ch/images/icons/priority_major.gif" height="16" width="16" border="0" align="absmiddle" alt="Major"> Major
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<strong style="font-weight:normal;color:#505050;">Reporter:</strong>
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<a class="user-hover" rel="daniel.stankiewicz@asseco.pl" id="email_daniel.stankiewicz@asseco.pl" href="http://jira.qos.ch/secure/ViewProfile.jspa?name=daniel.stankiewicz%40asseco.pl" style="color:#326ca6;">Daniel Stankiewicz</a>
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