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Diffstat (limited to 'python-packages/json_schemas/src')
7 files changed, 158 insertions, 0 deletions
diff --git a/python-packages/json_schemas/src/conf.py b/python-packages/json_schemas/src/conf.py new file mode 100644 index 000000000..1ae1493e3 --- /dev/null +++ b/python-packages/json_schemas/src/conf.py @@ -0,0 +1,54 @@ +"""Configuration file for the Sphinx documentation builder.""" + +# Reference: http://www.sphinx-doc.org/en/master/config + +from typing import List +import pkg_resources + + +# pylint: disable=invalid-name +# because these variables are not named in upper case, as globals should be. + +project = "0x-json-schemas" +# pylint: disable=redefined-builtin +copyright = "2018, ZeroEx, Intl." +author = "F. Eugene Aumson" +version = pkg_resources.get_distribution("0x-json-schemas").version +release = "" # The full version, including alpha/beta/rc tags + +extensions = [ + "sphinx.ext.autodoc", + "sphinx.ext.doctest", + "sphinx.ext.intersphinx", + "sphinx.ext.coverage", + "sphinx.ext.viewcode", +] + +templates_path = ["doc_templates"] + +source_suffix = ".rst" +# eg: source_suffix = [".rst", ".md"] + +master_doc = "index" # The master toctree document. + +language = None + +exclude_patterns: List[str] = [] + +# The name of the Pygments (syntax highlighting) style to use. +pygments_style = None + +html_theme = "alabaster" + +html_static_path = ["doc_static"] +# Add any paths that contain custom static files (such as style sheets) here, +# relative to this directory. They are copied after the builtin static files, +# so a file named "default.css" will overwrite the builtin "default.css". + +# Output file base name for HTML help builder. +htmlhelp_basename = "json_schemaspydoc" + +# -- Extension configuration: + +# Example configuration for intersphinx: refer to the Python standard library. +intersphinx_mapping = {"https://docs.python.org/": None} diff --git a/python-packages/json_schemas/src/doc_static/.gitkeep b/python-packages/json_schemas/src/doc_static/.gitkeep new file mode 100644 index 000000000..e69de29bb --- /dev/null +++ b/python-packages/json_schemas/src/doc_static/.gitkeep diff --git a/python-packages/json_schemas/src/index.rst b/python-packages/json_schemas/src/index.rst new file mode 100644 index 000000000..3de809aa3 --- /dev/null +++ b/python-packages/json_schemas/src/index.rst @@ -0,0 +1,18 @@ +.. source for the sphinx-generated build/docs/web/index.html + +Python zero_ex.json_schemas +=========================== + +.. toctree:: + :maxdepth: 2 + :caption: Contents: + +.. automodule:: zero_ex.json_schemas + :members: + +Indices and tables +================== + +* :ref:`genindex` +* :ref:`modindex` +* :ref:`search` diff --git a/python-packages/json_schemas/src/zero_ex/__init__.py b/python-packages/json_schemas/src/zero_ex/__init__.py new file mode 100644 index 000000000..e90d833db --- /dev/null +++ b/python-packages/json_schemas/src/zero_ex/__init__.py @@ -0,0 +1,2 @@ +"""0x Python API.""" +__import__("pkg_resources").declare_namespace(__name__) diff --git a/python-packages/json_schemas/src/zero_ex/json_schemas/__init__.py b/python-packages/json_schemas/src/zero_ex/json_schemas/__init__.py new file mode 100644 index 000000000..10c564b99 --- /dev/null +++ b/python-packages/json_schemas/src/zero_ex/json_schemas/__init__.py @@ -0,0 +1,83 @@ +"""JSON schemas and associated utilities.""" + +from os import path +import json +from typing import Mapping + +from pkg_resources import resource_string +import jsonschema +from stringcase import snakecase + + +class _LocalRefResolver(jsonschema.RefResolver): + """Resolve package-local JSON schema id's.""" + + def __init__(self): + """Initialize a new instance.""" + jsonschema.RefResolver.__init__(self, "", "") + + @staticmethod + def resolve_from_url(url: str) -> str: + """Resolve the given URL. + + :param url: a string representing the URL of the JSON schema to fetch. + :returns: a string representing the deserialized JSON schema + :raises jsonschema.ValidationError: when the resource associated with + `url` does not exist. + """ + ref = url.replace("file://", "") + return json.loads( + resource_string( + "zero_ex.json_schemas", + f"schemas/{snakecase(ref.lstrip('/'))}.json", + ) + ) + + +# Instantiate the `_LocalRefResolver()` only once so that `assert_valid()` can +# perform multiple schema validations without reading from disk the schema +# every time. +_LOCAL_RESOLVER = _LocalRefResolver() + + +def assert_valid(data: Mapping, schema_id: str) -> None: + """Validate the given `data` against the specified `schema`. + + :param data: Python dictionary to be validated as a JSON object. + :param schema_id: id property of the JSON schema to validate against. Must + be one of those listed in `the 0x JSON schema files + <https://github.com/0xProject/0x-monorepo/tree/development/packages/json-schemas/schemas>`_. + + Raises an exception if validation fails. + + >>> assert_valid( + ... {'v': 27, 'r': '0x'+'f'*64, 's': '0x'+'f'*64}, + ... '/ecSignatureSchema', + ... ) + """ + # noqa + + _, schema = _LOCAL_RESOLVER.resolve(schema_id) + jsonschema.validate(data, schema, resolver=_LOCAL_RESOLVER) + + +def assert_valid_json(data: str, schema_id: str) -> None: + """Validate the given `data` against the specified `schema`. + + :param data: JSON string to be validated. + :param schema_id: id property of the JSON schema to validate against. Must + be one of those listed in `the 0x JSON schema files + <https://github.com/0xProject/0x-monorepo/tree/development/packages/json-schemas/schemas>`_. + + Raises an exception if validation fails. + + >>> assert_valid_json( + ... r'''{ + ... "v": 27, + ... "r": "0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", + ... "s": "0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff" + ... }''', + ... '/ecSignatureSchema', + ... ) + """ # noqa: E501 (line too long) + assert_valid(json.loads(data), schema_id) diff --git a/python-packages/json_schemas/src/zero_ex/json_schemas/py.typed b/python-packages/json_schemas/src/zero_ex/json_schemas/py.typed new file mode 100644 index 000000000..e69de29bb --- /dev/null +++ b/python-packages/json_schemas/src/zero_ex/json_schemas/py.typed diff --git a/python-packages/json_schemas/src/zero_ex/json_schemas/schemas b/python-packages/json_schemas/src/zero_ex/json_schemas/schemas new file mode 120000 index 000000000..b8257372c --- /dev/null +++ b/python-packages/json_schemas/src/zero_ex/json_schemas/schemas @@ -0,0 +1 @@ +../../../../../packages/json-schemas/schemas/
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