Log line parsers

Libraries or tools that support log-line parsers for logs across the variety of languages/platforms?

• instaparse or clj-antlr are feature rich libraries
• regex for a more manual approach

Notes from the community

clj-antlr might be the most robust as you might find compatible grammar definitions around the internet
(that's how we kick started our Lucene-like query interface in our product)

Started with regex, too limiting, have moved on to instaparse. Thought about clj-antlr, but didn't have a lot of hope for finding open-sourced grammars. I guess I should actually look...

If care about speed ANTLR is much faster than instaparse

Definitely. Instaparse is nice for REPL-driven development, but once I get the grammars nailed down I'll probably move to ANTLR.

i noticed that https://github.com/antlr/grammars-v4 had a variety of grammars -- is it possible one of them might already be close to what you might need?

turning out to be pretty easy to define log parsers in instaparse.

This is a discussion about log-line parser libraries, mentioning instaparse, clj-antlr, regex, and ANTLR, but it names no project files, tests, or concrete change. First clarify the desired feature and supported log formats; completion criteria are not defined in the issue.