April 2013 - logback-user - mailman3.qos.ch

DBAppender question
by Donald McLean 16 Apr '13

16 Apr '13

If I have several processes and they are all logging to the same database, how do I tell which entries are coming from which process? Thank you, Donald

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Batch Update error using Logback with Postgres on Windows
by Dawson Mossman 16 Apr '13

16 Apr '13

I'm using Postgres 9.2 on Windows with Logback 0.9.18. I am using the DBAppender to log to a database. I am able to log a single logging_event record, but whenever I add something to the MDC which triggers records being written to the logging_event_property table, I get the following error: I can't for the life of me figure out what's going on. thanks! BTW, the JDBC driver is postgresql-9.2-1002.jdbc4.jar 16:33:01,514 |-ERROR in ch.qos.logback.classic.db.DBAppender[db] - problem appending event java.sql.BatchUpdateException: Batch entry 0 INSERT INTO logging_event_property (event_id, mapped_key, mapped_value) VALUES (3, 'dog', 'dog') was aborted. Call getNextException to see the cause. at java.sql.BatchUpdateException: Batch entry 0 INSERT INTO logging_event_property (event_id, mapped_key, mapped_value) VALUES (3, 'dog', 'dog') was aborted. Call getNextException to see the cause. at at org.postgresql.jdbc2.AbstractJdbc2Statement$BatchResultHandler.handleError(AbstractJdbc2Statement.java:2746) at at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1887) at at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:405) at at org.postgresql.jdbc2.AbstractJdbc2Statement.executeBatch(AbstractJdbc2Statement.java:2893) at at ch.qos.logback.classic.db.DBAppender.insertProperties(DBAppender.java:173) at at ch.qos.logback.classic.db.DBAppender.subAppend(DBAppender.java:94) at at ch.qos.logback.core.db.DBAppenderBase.append(DBAppenderBase.java:98) * * *---* *Dawson Mossman* Certified ScrumMaster 454.7061 ext. 226

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Failed to instantiate [ch.qos.logback.classic.LoggerContext]
by marceloverdijk 16 Apr '13

16 Apr '13

I'm migrating from log4j to slf4j/logback but I'm facing a problem running on Google App Engine. Locally it works fine but on Google infra I get: 2013-04-08 20:35:49.900 [s~myapp/0-1.366534131644586896].<stderr>: Failed to instantiate [ch.qos.logback.classic.LoggerContext] W 2013-04-08 20:35:49.902 [s~myapp/0-1.366534131644586896].<stderr>: Reported exception: There isn't displayed any additional info unfortunately. I read about earlier problems with InetAddress, but this class is on whitelist of latest GAE SDK version which I'm using (1.7.6). I wonder if other people are abe to setup logback on GAE? It would be a real pity if I've to revert back to log4j... -- View this message in context: http://logback.10977.n7.nabble.com/Failed-to-instantiate-ch-qos-logback-cla… Sent from the Users mailing list archive at Nabble.com.

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JBoss logback scan=true not reloading the changes automatically
by KNair 15 Apr '13

15 Apr '13

Hi All, We are using logback as the logger in our application. The environment details are JBoss 5.1, logback logback 0.9.29 and SL4j 1.6.1. The application is in ear format. As per the document, i ve placed scan = true and specified a scan period. Now when i change the logger level when the application is running, it is not reloaded automatically even after the specified time interval. Once i restart the app server, the changes are detected. We tried <jmxConfigurator/> and then changed the levels using jmx console. That approach has worked fine and logger levels are changed dynamically. My requirement is to get a solution with out using jmx. so that when i change the level, it has to reflect with out restarting the server. My logback.xml is modelled as per the documentation site, i would like to know, if there is anything more specific to be done? I wanted to minimize the dependency of logback api in our code, so i am using sl4j as wrapper. Any additional properties need to be set, other than scan=true? All the configuration properties are logged in the console when i start the server. It even logs, the reload time period which i ve given. Thanks for the help. K Nair -- View this message in context: http://logback.10977.n7.nabble.com/JBoss-logback-scan-true-not-reloading-th… Sent from the Users mailing list archive at Nabble.com.

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SiftingAppender and RollingFileAppender, roll on close.
by diroussel 13 Apr '13

13 Apr '13

Hi logback users! After using logback for a few years I've just started trying to use sifting appender. I want to have two messagepricer.${logfileType}.${HOSTNAME}.log (where logfileType is main or workers) (effectivitly statically named) and many msg-123456789.log (dynamically named) logs, one for each message processed. In general this works, apart from two problems: 1) dynamically named logs don't get rolled (they not renamed to dated form and gz into archive dir) 2) the log file is not closed and when I try to manually rename in Windows Explorer I'm told I can't, because of the write lock. Of course I've searched StackOverflow.com, and searched the web, and read the source code, btu nothing has lead me to a solution. So I did a build of trunk (head 3cd6c8ca1142573a2b69e8d2309b31216d764f15) to get logback-1.0.12-SNAPSHOT. I think problem (2) is caused by SiftingAppender waiting 30 mins deciding logs are stale. Maybe this could be configurable. If I make a patch would it be accepted? It has been asked for before, see [1], [2] and [3]. Problem (1) seems to be because when SiftingAppender closes old RollingFileAppenders, the rollover() is not called, and the file just closed as is. I guess this is because during JVM shutdown closing should be fast, and not trigger a rollover? Other people have hit this before, see [4], so it seems like a commonly asked for enhancement. Is there a chance we could add config to RollingFileAppender to enable roll-on-close? You can see my logback.xml at [5]. Apart from my suggested enhancements, is there a way to fix this? Something I've missed Also?: 3) It would be nice if AsyncAppender could fan out to mulitple appenders. Since it only supports one appender I have to have two AsyncAppenders each feeding a different SiftingAppender. References [1] http://logback.10977.n7.nabble.com/how-to-remove-old-log-files-in-this-sift… [2] http://jira.qos.ch/browse/LOGBACK-244 [3] http://jira.qos.ch/browse/LOGBACK-724 [4] http://mailman.qos.ch/pipermail/logback-user/2011-November/002706.html [5] https://gist.github.com/diroussel/5363736 -- View this message in context: http://logback.10977.n7.nabble.com/SiftingAppender-and-RollingFileAppender-… Sent from the Users mailing list archive at Nabble.com.

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SMTPAppender with multiple filters
by romeara 12 Apr '13

12 Apr '13

Hi there, I'm having an issue with using multiple filters as you had outlined in a previous post: <appender name="SQL_TRANSACTION_DELAY_EMAIL" class="ch.qos.logback.classic.net.SMTPAppender"> <filter class="ch.qos.logback.classic.filter.LevelFilter"> <level>WARN</level> <onMatch>NEUTRAL</onMatch> <onMismatch>DENY</onMismatch> </filter> <filter class="com.annadaletech.taxfree.kioskapp.util.SQLTransactionDelayFilter"> <transactionDelayText>running time (millis)</transactionDelayText> </filter> ... </appender> The first filter is looking for any log entry marked as [WARN ] and the second checks this message for my own user defined value and whether or not the email needs to be sent. However, though the second filter code is being accessed, the email is not passed from an ACCEPT filterReply. I've also read somewhere that apparently the SMTPAppender wont send an email unless its catching an ERROR message. If so, how can I alter this? Your thoughts appreciated, Ray. -- View this message in context: http://logback.10977.n7.nabble.com/SMTPAppender-with-multiple-filters-tp118… Sent from the Users mailing list archive at Nabble.com.

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logback-mongodb appender config examples ?
by William 12 Apr '13

12 Apr '13

would be grateful for pointers to logback.xml config examples showing how to use the appender thanks ahead of time

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Timing of sifting appender dynamic appender instantiation
by Stuart Rossiter 11 Apr '13

11 Apr '13

The manual states that appenders get dynamically added by SiftingAppender when the relevant MDC key is altered: "Whenever the "userid" MDC key is assigned a new value, a new FileAppender instance will be built from scratch." However, I found that it was only created when I logged my first message using a relevant Logger. (And confirmed this by using an OnConsoleStatusListener in my configuration file.) Is this a bug? A documentation error? This is a problem because I need to programmatically adjust this appender (from the 'base' set up by the configuration file) before I use it. I currently have to log a spurious message first so that the appender is created, and then adjust it. Stuart -- ________________________________ Stuart Rossiter

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Logs targeting Excel Pivot Tables
by Thorbjørn Ravn Andersen 11 Apr '13

11 Apr '13

Hi. I want to create a log file which is not directly intended to be readable by humans but to use with Pivot Tables in Excel to generate reports (e.g. over http requests and their duration spread over the day for several months, that kind of thing). I was wondering what the best approach for doing that would be. My guess would be a tab-separated file (to allow Excel to read it in as a CSV-file), with the first field being the timestamp in an Excel compatible form (e.g. a number formatted as a timestamp), and the remaining fields the individual items I need to analyze. (This is what I generate right now using ad-hoc Perl) (We can calculate on that 99.99% of the time that the application will exit with System.exit(0) in my main method, so it is not super important with having a solution robust against e.g. OutOfMemoryError, but I would like one that does not build a large data structure in memory like using JExcel to generate a spread sheet on the fly). Anyone who has experimented with this and have experiences to share? Thanks /Thorbjørn

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Multi thread logging for Sift appender
by Sumit Anvekar 11 Apr '13

11 Apr '13

Hi all, I am using logback in a webapplication and logs work fine. However i also have another timer task started on application start up. logs from this timer task are getting displayed correctly on console using ConsoleAppender, however they do not appear in my rolling file sift appender (other logs from my webapplication are logged fine). Can anyone suggest what could be the problem? -- Happy Coding, Sumit

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