Logger Setup

For this homework, you will setup and configure the log4j2 logging library. The only thing you should do for this homework assignment is import the homework and create a log4j2 configuration file in the correct location with the correct configuration.

Configuration

The log4j2 third-party package should be setup automatically by maven when you import this homework into Eclipse.

Configure the LoggerSetup logger to output WARN messages and higher (more severe) to the console and ALL messages to a debug.log file in the current working directory, and configure the root logger to output INFO messages and higher to the console only. You can use the log4j2.xml example from lecture as a starting point.

Only output the message and short error message (if appropriate) to the console. The expected console output should look like:

wren
egret eagle
Catching finch
ibis
wren
egret eagle
Catching finch

Include the sequence number, level (using only 3 letters), class name, method name, thread name, 3 lines from any stack trace (if appropriate), and a newline character (%n) in the debug.log file. See the test/resources/debug.log file for the expected file output. It is also included below:

[001 trace] LoggerSetup.outputMessages main: tucan
[002 debug] LoggerSetup.outputMessages main: duck
[003 info] LoggerSetup.outputMessages main: ibis
[004 warn] LoggerSetup.outputMessages main: wren
[005 error] LoggerSetup.outputMessages main: egret java.lang.Exception: eagle
	at LoggerSetup.outputMessages(LoggerSetup.java:24)
	at LoggerSetup.main(LoggerSetup.java:34)
[006 fatal] LoggerSetup.outputMessages main: Catching java.lang.RuntimeException: finch
	at LoggerSetup.outputMessages(LoggerSetup.java:25)
	at LoggerSetup.main(LoggerSetup.java:34)

You should NOT modify the LoggerSetup.java, LoggerSetupTest.java, or test/debug.log files. You should only create a NEW file in the correct location to configure log4j2.

Hints

Below are some hints that may help with this homework assignment:

• The log4j2.xml file in the lecture examples is a good starting point.

• For configuring the output locations (where to output, file versus console), take a look at the ConsoleAppender and FileAppender information pages.

• For configuring the output format (what to output), I recommend you take a look at the PatternLayout information page. It includes all of the possible patterns, like class, date, throwable, file, location, line, message, method, n, level, sequenceNumber, threadId, and threadName (you will only use some of these).

• Do NOT overwrite the test/debug.log file. You should configure log4j2 to write to the path debug.log instead.

These hints are optional. There may be multiple approaches to solving this homework.

Requirements

See the Javadoc and TODO comments in the template code in the src/main/java directory for additional details. You must pass the tests provided in the src/test/java directory. Do not modify any of the files in the src/test directory.

See the Homework Guides for additional details on homework requirements and submission.