Validate JSON Action

Validates JSON files or strings, providing clear error messages on malformed input. Critical for preventing runtime failures from invalid configuration.

Usage

- name: Validate options file
  uses: KoalaOps/validate-json@v1
  with:
    json_file: .koala/build.targets.json

- name: Validate JSON string
  uses: KoalaOps/validate-json@v1
  with:
    json_string: ${{ inputs.options_json }}

Inputs

Name	Description	Required	Default
json_string	JSON string to validate	No	-
json_file	Path to JSON file to validate	No	-
schema_file	Optional JSON schema for validation*	No	-

*Note: Currently validates that the schema file is valid JSON, but does not validate input conformance to the schema.

Outputs

Name	Description
valid	Whether the JSON is valid (true/false)
error	Error message if validation failed
parsed	The parsed JSON content (if valid)

Examples

Validate configuration file

- name: Validate build configuration
  uses: KoalaOps/validate-json@v1
  with:
    json_file: .koala/build.targets.json
  continue-on-error: false  # Fail workflow on invalid JSON

Validate and use parsed output

- name: Validate and parse config
  id: config
  uses: KoalaOps/validate-json@v1
  with:
    json_file: config.json

- name: Use parsed config
  run: |
    echo "Config: ${{ steps.config.outputs.parsed }}"