Validate JSON(s) GitHub Action

Validate JSON(s) by given schema using Ajv schema validator.

Why another JSON validation action you ask..

I was facing issues with the other actions for JSON validations and so I made my own. If you are facing issues like the one below, I recommend to switch to this one.

no schema with key or ref "https://json-schema.org/draft-07/schema"

Inputs

schema

Required Relative path to the JSON schema file

additional_schema

Required if schema use $ref to target other schemas. Path to additional JSON schema files which is referenced by the schema used for validation. You can target one file or a directory with multiple files. (eg. schemas/ or schemas.schema.json).

additional_schema_extention

Required for additional_schema which are not .schema.json files. The file extention of the schema used. ( default: .schema.json )

pattern

Required Glob pattern to the JSON(s) to validate

allow_matching_properties

Optional When true, allow overlap between "properties" and "patternProperties". Does not affect other strict mode restrictions. (Defaults: "false")

use_ajv_formats

Optional When true, allows you to use ajv-format plugin. Please follow the link to see what formats are allowed: https://ajv.js.org/packages/ajv-formats.html (Defaults: "false")

show_result_in_summary

Optional When true, allow the results and error (if any) appear in the summary as a code block. (Defaults: "false")

Outputs

List of all processed files and it's validation result.

Example usage

Simple Validation

Above is able to validate JSON and YAML files using a JSON schema. All you need to do to validate is to provide the path of where to find the Scheme using the schema key and the file pattern to validate under the pattern key.

uses: vanekj/validate-json-action@v1
with:
  schema: schemas/default.schema.json
  pattern: data/**/*.json

Validation with definition schemas

Above is able to validate JSON and YAML files using multiple JSON schema. To validate with multiple schemas, provide the path of where to find the Scheme using the schema key, add in the definition schemas using the additional_schemas key word, (if not using schema.json extention) the additional_schema_extention key and the file pattern to validate under the pattern key.

uses: vanekj/validate-json-action@v1
with:
  schema: schemas/default.schema.yaml
  additional_schemas: schemas/
  additional_schema_extention: schema.yaml
  pattern: data/**/*.json

Validate against schemas that use string formats: use_ajv_formats

If you are using formats in your schema (https://json-schema.org/understanding-json-schema/reference/string.html#format) set use_ajv_formats true and the plugin will be used. Example below:

uses: vanekj/validate-json-action@v1
with:
  schema: schemas/default.schema.json
  pattern: data/**/*.json
  use_ajv_formats: "true"

Validate against schemas with overlapping "properties" and "patternProperties": allow_matching_properties

If you see an error about a schema containing overlap between "properties" and "patternProperties", you can enable allowmatchingProperties behaviour with the allow_matching_propertes option Example below:

uses: vanekj/validate-json-action@v1
with:
  schema: schemas/default.schema.json
  pattern: data/**/*.json
  allow_matching_properties: "true"

Show Validation results in github actions summary

You have an option to display the results of the validator in a github summary. When making show_result_in_summary true, the results found in workflow logs will display within a codeblock in your github summary. Example below:

Step in workflow

uses: vanekj/validate-json-action@v1
with:
  schema: schemas/default.schema.json
  pattern: data/**/*.json
  show_result_in_summary: "true"

Result in Summary

Pass Validation

Falied Validation