JSON schema validation CLI

A golang CLI wrapper for xeipuuv/gojsonschema.

Features:

• Simple to install (static go binary)
• Validate JSON or YAML files against a JSON schema
• Check JSON schemas for correctness
• Supports local and remote schemas

Note: Only schemas up to draft07 are officially supported.

go install 'github.com/romnn/gojsonschema-cli/cmd/jsonschema@main'

Validate a JSON schema

This is similar to ajv's compile, in that we validate the JSON schema itself. This can be useful when you first want to ensure that your schemas are well-formed.

jsonschema validate -s ./schemas/my-schema.json

# assuming my-schema.json uses draft 07, this would be equal:
jsonschema validate -s "http://json-schema.org/draft-07/schema#" -v ./schemas/my-schema.json

Validate a file against a schema

jsonschema validate -s ./schemas/my-schema.json -v ./my-data.json

Also, you can validate against remote schemas:

export REMOTE="https://raw.githubusercontent.com/yannh/kubernetes-json-schema/master/master-standalone-strict"
jsonschema validate -s "${REMOTE}/horizontalpodautoscaler.json" -v ./my-autoscaler.json

Also, you can validate YAML files, such as helm values files:

jsonschema validate -s ./values.schema.json -v ./values.prod.yaml

Development

To use the provided tasks in taskfile.yaml, install task.

# view all available tasks
task --list-all
# install development tools (requires brew/linuxbrew)
task dev:tools:install

After setup, you can use the following tasks during development:

task tidy
task run:race
task run:race -- validate -s ./schema.json -v ./values.json
task build:race
task test
task lint
task format

Acknowledgements

• This CLI uses xeipuuv/gojsonschema under the hood.
• This CLI intentionally behaves very similar to the internal JSON schema validation of helm lint.
• This CLI has a similar goal as neilpa/yajsv, which does not support remote schemas, schema checking, and other features.

License

The project is licensed under the same license as xeipuuv/gojsonschema.