Log Levels

(def fruit "Apple")

Instructions

In this exercise you'll be processing log-lines.

Each log line is a string formatted as follows: "[<LEVEL>]: <MESSAGE>".

There are three different log levels:

• INFO
• WARNING
• ERROR

You have three tasks, each of which will take a log line and ask you to do something with it.

1. Get message from a log line

Implement the message function to return a log line's message:

(message "[ERROR]: Invalid operation")
;;=> "Invalid operation"

Any leading or trailing white space should be removed:

(message "[WARNING]:  Disk almost full\r\n")
;;=> "Disk almost full"

2. Get log level from a log line

Implement the log-level function to return a log line's log level, which should be returned in lowercase:

(log-level "[ERROR]: Invalid operation")
;;=> "error"

3. Reformat a log line

Implement the reformat function that reformats the log line, putting the message first and the log level after it in parentheses:

(reformat "[INFO]: Operation completed")
;;=> "Operation completed (info)"