|
This enables filters such as
-time > 2020-01-01
-time < 2020-02-03
...
for time and duration, and later possibly also for more things (such as
a COUNT(...) construct).
This work tries to integrate them into the existing filter system as
seamless as possible, by providing a Comparator which implements
LogFilter.
The "type checking" is done at parse time, so nonsensical comparisons
like -time > 12s flat out give a parse error. This however might be
changed to a more dynamic system with run-time type checking, in which
case we could do away with the type parameter on Producer and simply
work with a generic Value. The comparator would then return an error if
two non-identical types would be compared.
Note that the system does not support arithmetic expressions, only
simple comparisons to constant values.
|
