is_jsonb_valid is a native PostgreSQL extension to validate json schemas following Draft4.
The extension exposes only one function is_jsonb_valid(schema jsonb, data jsonb) which returns a boolean depending
on the success of the validation.
Examples:
SELECT is_jsonb_valid('{"type": "number"}', '1');
> t
SELECT is_jsonb_valid('{"type": "object"}', '1');
> f
It passes all JSON-Schema-Test-Suite, with the notable exception of $refRemote.
Make sure that you have PostgreSQL 9.6 or newer (check ci.yml for supported versions). In the directory of the project do:
make install && make installcheck
This will compile the extension and run the tests. Later in psql run:
CREATE EXTENSION is_jsonb_valid;
You can also run tests without installing postgres.
docker run -it --rm --mount "type=bind,src=$(pwd),dst=/repo" pgxn/pgxn-tools sh -c 'cd /repo && pg-start 12 && pg-build-test'
Benchmarking is always tricky, I've tried to check against a real world example, in particular tweets.
The only other extension that I know for this purpose is postgres-json-schema.
For more information on how to run the benchmarks check ./tools/README.md
| Numbers of tweets | is_jsonb_valid (ms) | postgres-json-schema (ms) | Improvement (times) |
|---|---|---|---|
| 10 | 34.270 | 192.678 | 5.6 |
| 100 | 206.378 | 1975.543 | 9.6 |
| 10000 | 8911.354 | 203172.464 | 22.8 |
This project is a based on postgres-json-schema. It has been written from scratch in C (original was written in SQL).