Multiple schema JSON validation in Golang - json

Question

I need to validate several JSON files against a schema in Golang.
I have been able to achieve it by using gojsonschema, that is really a straight forward library.
However, the problem I'm facing right now is that I have been given with schemas that have dependencies to another schemas and haven't found the way to load all the schemas that I need. Therefore, my validations always fail.
This is my main schema:
{
"$schema": "http://json-schema.org/draft-04/schema#",
"$ref": "#/definitions/List",
"definitions": {
"List": {
"type": "array",
"items": {
"$ref": "#/definitions/Item"
}
},
"Item": {
"description": "An item ....",
"type": "object",
"additionalProperties": false,
"properties": {
"property01": {
"description": "The property01 code.",
"$ref": "./CommonTypes.json#/definitions/Type01Definition"
}
},
"required": [
"property01"
]
}
}
}
And, I have another one with common types:
{
"$schema": "http://json-schema.org/draft-04/schema#",
"definitions": {
"Type01Definition": {
"description": "The definition for the type 01",
"type": "string",
"pattern": "^[A-Z0-9]{3}$"
}
}
}
Is there a way to load several schemas using that library? Or is there any other Golang library that allows to achieve that?

Answer 1

The way to refer to a file using $ref is to specify the absolute path of the file using a URL scheme. If you change the $ref to look like "$ref" : "file:///home/user/directory/CommonTypes.json#/definitions/Type01Definition, your example will work as expected.
If you need a bit more flexibility you can either try gojsonschema's NewReferenceLoaderFilesystem or switch to a different Golang library https://github.com/santhosh-tekuri/jsonschema. That library allows you to add custom resources so you can load several schemas at once.