Log Levels

10 Points

strings

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:

julia> message("[ERROR]: Invalid operation")
"Invalid operation"

Any leading or trailing white space should be removed:

julia> 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:

julia> 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:

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

Note: All strings in this exercise are in English and limited to the ASCII character set. Later Concepts will give a chance to work with Unicode characters.

julia