Define a new logging configuration that does the following:
- Add a new file appender that outputs log statements to a file named
flatiron-spring-trace.log. - Configure this appender with a pattern that follows these rules:
- Start each line with the log level, which should always be exactly 3
characters and truncate from the beginning:
- Hint: the modifier to truncate from the beginning is:
.-<num-chars>
- Hint: the modifier to truncate from the beginning is:
- Next, each line should have the thread in the following format:
[THREAD:main] - Next, each line should have the fully qualified class name in full.
- Next each line should have a new line character.
- Next each line should have two tabs (hint: tab is a special character
\t). - Next each line should have the actual message passed into the logger.
- Next each line should have another new line character.
- Start each line with the log level, which should always be exactly 3
characters and truncate from the beginning:
- Configure your logging so that only classes in the package
com.flatiron.springuse this new appender.
The output in flatiron-spring-trace.log should look something like this:
INF [THREAD:main] com.flatiron.spring.FlatironSpring.FlatironSpringApplication
Starting FlatironSpringApplication using Java 17.0.3 on asterix.lan with PID 31468 (/Users/dbash/sandbox/flatiron/flatiron-spring/build/classes/java/main started by dbash in /Users/dbash/sandbox/flatiron/flatiron-spring)
DEB [THREAD:main] com.flatiron.spring.FlatironSpring.FlatironSpringApplication
Running with Spring Boot v2.7.1, Spring v5.3.21
INF [THREAD:main] com.flatiron.spring.FlatironSpring.FlatironSpringApplication
No active profile set, falling back to 1 default profile: "default"
INF [THREAD:main] com.flatiron.spring.FlatironSpring.FlatironSpringApplication
Started FlatironSpringApplication in 1.037 seconds (JVM running for 1.266)
TRA [THREAD:http-nio-8080-exec-4] com.flatiron.spring.FlatironSpring.HelloController
Entering hello()
TRA [THREAD:http-nio-8080-exec-4] com.flatiron.spring.FlatironSpring.HelloController
Fetching joke of the moment
TRA [THREAD:http-nio-8080-exec-4] com.flatiron.spring.FlatironSpring.HelloController
Returning greeting from hello()
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