log4j

I have some log files generated by Log4J2 . I am outputting the logs into a .json file using the JSONLayout in the log4j2.xml configuration file. My JSONLayout is defined like this: <JSONLayout complete="false"></JSONLayout> As logs get entered into the log file on my machine, they are appended, one-after-another, and look like this in logs.log: { "logger":"com.mycompany.myLogger", "timestamp":"1396792374326", "level":"ERROR", "thread":"pool-2-thread-2", "message":"System: unable to perform action", "throwable":"java.lang.NullPointerException\\n\tat com.myCompany.MyClass $.java:432)\\n\tat

I have the following on my log4j.properties log4j.rootLogger = debug, stdout, fileLog log4j.appender.stdout = org.apache.log4j.ConsoleAppender log4j.appender.fileLog = org.apache.log4j.RollingFileAppender log4j.appender.fileLog.File = C:/logs/services.log log4j.appender.fileLog.MaxFileSize = 256MB log4j.appender.fileLog.MaxBackupIndex = 32 #Category: ConsultaDados log4j.category.ConsultaDados=ConsultaDados log4j.appender.ConsultaDados=org.apache.log4j.DailyRollingFileAppender log4j.appender.ConsultaDados.layout=org.apache.log4j.PatternLayout log4j.appender.ConsultaDados.layout

I have a layered application in Java which has a multi thread data access layer which is invoked from different points. A single call to this layer is likely to spawn several threads to parallelize requests to the DB. What I'm looking for is a logging tool that would allow me to define "activities" that are composed by various threads. Therefore, the same method in the data access layer should log different outputs depending on its caller. The ability to group different outputs to summarize the total cost of an operation is also important. Although the application is in Java, language is not a

Here is my problem: I am trying to debug Apache Cassandra and understand the flow of the app. I.e. when a request is sent by the client, say put(), what methods are called and how the system is working internally. So, here is what I am thinking: Write a main method in the cassandra code which calls the point of entry put() method, put breakpoints in eclipse etc etc OR Don't write a main method, simply use regular client (which accesses server via TCP) and "debug" (by reading the log files and understanding the code) using log4j loggers (already implemented in cassandra). So, my question is,

I need to create logs with key value pairs as below. Is there any support in PatternLayout to do this for the static fields in a thread like log_level, class_name, event_id etc with the log4j2.xml. Sample log: 2014-06-18 11:57:46,719 log_level="INFO" class_name="com.abc.dgl.App:main(158)" name="Application start event" event_id="b88f7ea0-4cb1-438f-a728-ac7c2bdac578" app="Test App" severity="info" action="loaded sfor file processing" desc="props was read and loaded" result="success" reason="abc" transaction_id="b88f7ea0-4cb1-438f-a728-ac7c2bdac578" Yes, this is possible. You can either use a

As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 7 years ago . What conventions do you use for log categories in log4j or similar libraries ? Usually you see class names as categories, but have you used other systems ? What about log levels ? What levels do you use and in which case ? Update: as