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Local filesystem based JSON catalogue, usable e.g. with package `jsonschema`

Project description

Package jsoncatalogue allows reading set of JSON files from directory structure resembling urls.

Files are loaded and provided as simple url: jsoncontent dictionary.

Such a dictionary can be used as catalogue of JSON schemas for JSON Schema validation.

Installation

$ pip install jsoncatalogue

Structure of directory with JSON files

If you want to have catalogue for Swagger v1.2 validation:

./catalogue/http/wordnik.github.io/schemas/v1.2/apiDeclaration.json
./catalogue/http/wordnik.github.io/schemas/v1.2/infoObject.json
./catalogue/http/wordnik.github.io/schemas/v1.2/authorizationObject.json
./catalogue/http/wordnik.github.io/schemas/v1.2/modelsObject.json
./catalogue/http/wordnik.github.io/schemas/v1.2/operationObject.json
./catalogue/http/wordnik.github.io/schemas/v1.2/parameterObject.json
./catalogue/http/wordnik.github.io/schemas/v1.2/dataTypeBase.json
./catalogue/http/wordnik.github.io/schemas/v1.2/oauth2GrantType.json
./catalogue/http/wordnik.github.io/schemas/v1.2/resourceObject.json
./catalogue/http/wordnik.github.io/schemas/v1.2/dataType.json
./catalogue/http/wordnik.github.io/schemas/v1.2/resourceListing.json

where

  • catalogue - is catalogue “home” directory (can be deeper)
  • http- is protocol name. Can be any other, like ftp
  • wordnik.github.io - domain name
  • schemas/v1.2 - local path to JSON files
  • apiDeclaration.json - actual JSON file - must be valid JSON file (no other requirement exist)

As you see, there are no complex rules to follow, just have uri leading to valid JSON file (which is not even required to have an extension “.json”)

Loading JSON Catalogue from directory

>>> from jsoncatalogue import Catalogue
>>> catalogue = Catalogue()
>>> catalogue.add_directory("catalog")
>>> catalogue.add_directory("../other/catalog")
>>> catalogue.store
{"http://exam.ple/schema/one.json": {...},
 "http://exam.ple/schema/two.json": {...},
 "http://wordnik.github.io/schema/v1.2/apiAuthentication.json": {...}
 "http://no.extensi.on/schema/pets": {...}
 }

And this is all. You now have a dictionary with uris and related JSON content. The JSON content is already loaded and is represented as dictionary.

Using catalogue for JSON Schema validator

This catalogue.store can be assigned e.g. to jsonschema validator:

>>> from jsonschema import Draft4Validator
>>> validator = Draft4Validator()
>>> validator.resolver.store = catalogue.store

From now on, validator will know about schemas from catalogue

Note

Initial development done during work for CDV on project SUPERHUB. The package is published under MIT license with permision of CDV.

Project details


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This version
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0.1.1

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