> On Dec 19, 2016, at 12:27 PM, Adrian Chadd <adrian.ch...@gmail.com> wrote:
> So although I like the sentiment, I don't think using dtrace for
> program logging is the right answer. I like what apple did to wrap
> the program logging stuff so people didn't just write their own
> libraries (hi!) and so there's a unified-ish way to interact with
> apple programs. I think we could do with that.
We did a number of other things with ASL (Apple System Logger) which I miss
very much today and would hope to see in any FreeBSD equivalent:
1. We structured all log data into dictionaries, so every application and/or
subsystem within that application can add its own “tags” without squashing
other key information. This also unified the character encoding format, so
some applications were no longer logging in ISO-Latin1, others in UTF-8 and yet
others in SHIFT-JIS.
2. There’s also a logging database, as one of the many possible “output
sinks”, so searches / queries are fast (and there’s an API for querying and
managing its contents).
3. We added client-side and server side logging filters, so you can “crank an
application up” or shut its mouth without having to make any code changes.
4. It’s all thread-safe.
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