Re: [Json] Using JSON in log files

[Nico Williams <[e-mail]>]

On Wed, Nov 20, 2013 at 10:09 AM, Phillip Hallam-Baker <[e-mail]> wrote:

+1

If you look at tools like jq, you'll see that it's perfectly natural
to treat a sequence of JSON texts as an array of values, without any
need to first collect them into a larger JSON text consisting of an
array of all those values.

% echo 1 2 3 4 | jq .
1
2
3
4
% echo 1 2 3 4 | jq -s .
[
  1,
  2,
  3,
  4
]
%

This approach, combined with an online parser, makes it trivial to
deal with log-type structures (append-only with atomic appends) where
one appends JSON texts.

Sure, one could also pretend that the log starts with '[', make sure
every entry is a JSON text followed by a ',', and use an online
parser, but this is more fun.

The one caveat is that numbers are not self-delimiting, which means
that JSON texts consisting of a numeric value must be delimited with
whitespace.

Nico
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Nico
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