Linter for JSON Schema instances.
Project description
jsonschema-lint
Linter for JSON Schema instances.
Installation
This project is not currently packaged and so must be installed manually.
Clone the project with the following command:
git clone https://github.com/jacksmith15/jsonschema-lint.git
Usage
The linter is invoked on the command line:
$ jsonschema-lint
Selecting instances
By default, the linter will attempt to lint every file matching extension under the currect directory. This means every .json
file, plus every .yaml
/.yml
file if PyYAML is installed. A file will only be linted if a matching schema can be detected (see below).
You can override this behaviour by passing arguments to the linter, e.g.
$ jsonschema-lint **/*.avsc
Schema resolution
There are three ways schemas can be selected for a given instance. In order of priority:
- If provided, the
--schema
option will be used to validate all target instances. - A matching rule in a
.jsonschema-lint
file, in the instance directory or its parents (see below). - If the
--schema-store
flag is provided, then matching rules from Schema Store will be used.
.jsonschema-lint
files
.jsonschema-lint
files follow similar logic to .gitignore
and Github CODEOWNERS
files, in that they apply to all files under their directory tree.
Each line in a .jsonschema-lint
file is a rule, matching a filepath pattern to a particular schema. For example:
**/.circleci/config.yml https://json.schemastore.org/circleciconfig.json yaml
There are three parts to each rule, separated by whitespace. These are:
- the pattern/glob, in this case matching any files named
config.yml
in a directory named.circleci
- the location of the schema. This can be a remote URL, or a path on the local filesystem. If this is a relative path, it is resolved relative to the
.jsonschema-lint
file. - (optional) the expected file format of any instances. If this is omitted, the linter will attempt to detect the correct type from the file extension. If it cannot be detected, both will be attempted.
Development
Install dependencies:
pyenv shell 3.9.4 # Or other 3.9.x
pre-commit install # Configure commit hooks
poetry install # Install Python dependencies
Run tests:
poetry run inv verify
License
This project is distributed under the MIT license.
Project details
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