^start of line
Group log_time(?<log_time>[0-9-]+ [:0-9,]+) +matches at least one character from the set below:
0-9one character from 0 (4810) to 9 (5710)
-the literal - (4510 / 558 / 2D16)
the literal (3210 / 408 / 2016)
+matches at least one character from the set below:
:the literal : (5810 / 728 / 3A16)
0-9one character from 0 (4810) to 9 (5710)
,the literal , (4410 / 548 / 2C16)
\s+any whitespace character, repeated at least once
-the literal - (4510 / 558 / 2D16)
\s+any whitespace character, repeated at least once
Group severity(?<severity>\w+) \w+any word character, repeated at least once
\s+any whitespace character, repeated at least once
-the literal - (4510 / 558 / 2D16)
\s+any whitespace character, repeated at least once
Group message(?<message>.*) .*any character (except for line terminators), repeated any number of times
$end of line
g modifier: global. Finds all matches instead of stopping after the first
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string