TimeBasedRollingPolicy doesn't seem to like file names with '(' in them ----------------------------------------------------------------------- Key: LBCORE-75 URL: http://jira.qos.ch/browse/LBCORE-75 Project: logback-core Issue Type: Improvement Components: Appender Affects Versions: 0.9.11 Environment: Windows XP (x64). Java 6 (32 bit), Tomcat6 (in case you care) Reporter: Rod Widdowson Assignee: Logback dev list Apologies if this is PEBKAC I configured up my appender like this: <appender name="DS_LOG" class="ch.qos.logback.core.rolling.RollingFileAppender"> <File>/discoveryService.log</File> <ImmediateFlush>true</ImmediateFlush> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <FileNamePattern>C:\Program Files (x86)\DS/logs/discovery-%d{yyyy-MM-dd}.log</FileNamePattern> </rollingPolicy> <layout class="ch.qos.logback.classic.PatternLayout"> <Pattern>%date{HH:mm:ss.SSS} %level [%logger] %msg%n%ex{full}%n</Pattern> </layout> </appender> The slightly odd "C:\Program Files (x86)\" is where Windows64 puts 32 bit executable (and it things that Tomcat it). This failed. Due to my own programs limitations it took me a while to get there, but this was because of this statement: DateTokenConverter dtc = fileNamePattern.getDateTokenConverter(); if (dtc == null) { throw new IllegalStateException("FileNamePattern [" + fileNamePattern.getPattern() + "] does not contain a valid DateToken"); } when I poked into fileNamePattern.getDateTokenConverter(); I see this: this FileNamePattern (id=159) context LoggerContext (id=80) headTokenConverter LiteralConverter<E> (id=160) literal "C:\Program Files (x86" next null noContextWarning 0 [0x0] pattern "C:\Program Files (x86)\DS/logs/discovery-%d{yyyy-MM-dd}.log" Note that headTokenConverter is malformed, and so we end up with a null dtc. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.qos.ch/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira