re2: extracting multiple fields between paired delimiters

Question

I have a log file. Each line (or record) in the log file retains the following format:

tsB{{2020-08-18 15:02:29,793}}tsE,fnB{{standard_task_runner.py}}fnE,lnB{{53}}lnE,lvlB{{INFO}}lvlE

Here is what I want to do:

1] Extract 2020-08-18 15:02:29,793 with timestamp as key

2] Extract standard_task_runner.py with module as key

3] Extract 53 with line as key

4] Extract INFO with loglvl as key

Using re2 tools, how can I do this? The regular expression I have tried:

"(*tsB{{<timestamp>}}tsE) (*fnA{{<module>}}fnB) (*lnB{{<line>}}lnE) (*lvlB<loglvl>lvlE)"

@NathanBenton it's easily achieved by using the following regular expression `{{.+?}}` or `\{\{.+?\}\}` — Abdessabour Mtk, Aug 18 '20 at 15:29
Yes, sorry that was not noted: `"(*tsB{{}}tsE) (*fnA{{}}fnB) (*lnB{{}}lnE) (*lvlBlvlE)"` — nate, Aug 18 '20 at 15:31
What are the re2 tools? What you used does not look like a regex to me. — Wiktor Stribiżew, Aug 18 '20 at 15:44

Abdessabour Mtk · Accepted Answer · 2020-08-18T17:34:06.740

1

the following regular expression will match

{{.+?}}

explanations

{{ and }} match literal {{ and }}
.+? will match any character untill it will find }} i.e it will stop on the first }}

edited Aug 18 '20 at 17:34

answered Aug 18 '20 at 17:25

Abdessabour Mtk