Grange implements a modern subset of the range query language. It is an expressive grammar for selecting information out of arbitrary, self-referential metadata. It was developed for querying information about hosts across datacenters.
%{has(DC;east) & has(TYPE;redis)}:DOWN
See godocs for usage and syntax.
- Easily run cross-platform.
- Error messages when things go wrong.
- Fast. (Looking at you,
clusters.)
This is library, so does not export a main function. Run it via tests.
export RANGE_SPEC_PATH=/tmp/range-spec
git clone https://github.com/square/range-spec.git $RANGE_SPEC_PATH
go get github.com/pointlander/peg
$GOPATH/bin/peg range.peg && go test