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✨ add pydantic middleware

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This commit is contained in:
Joe Kaufeld 2024-08-21 21:07:44 -04:00
parent e10fd02e99
commit 3df8617436
8 changed files with 257 additions and 10 deletions
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11
example.py
View File

@ -1,6 +1,7 @@
from datetime import datetime, timedelta from datetime import datetime, timedelta
from spiderweb.decorators import csrf_exempt from spiderweb.decorators import csrf_exempt
from spiderweb.example_validator import CommentForm
from spiderweb.main import SpiderwebRouter from spiderweb.main import SpiderwebRouter
from spiderweb.exceptions import ServerError from spiderweb.exceptions import ServerError
from spiderweb.response import ( from spiderweb.response import (
@ -17,6 +18,7 @@ app = SpiderwebRouter(
"spiderweb.middleware.csrf.CSRFMiddleware", "spiderweb.middleware.csrf.CSRFMiddleware",
"example_middleware.TestMiddleware", "example_middleware.TestMiddleware",
"example_middleware.RedirectMiddleware", "example_middleware.RedirectMiddleware",
"spiderweb.middleware.pydantic.PydanticMiddleware",
"example_middleware.ExplodingMiddleware", "example_middleware.ExplodingMiddleware",
], ],
staticfiles_dirs=["static_files"], staticfiles_dirs=["static_files"],
@ -63,24 +65,25 @@ def http405(request) -> HttpResponse:
@csrf_exempt @csrf_exempt
@app.route("/form", allowed_methods=["GET", "POST"]) @app.route("/form", allowed_methods=["GET", "POST"])
def form(request): def form(request: CommentForm):
if request.method == "POST": if request.method == "POST":
return JsonResponse(data=request.POST) return JsonResponse(data=request.validated_data.dict())
else: else:
return TemplateResponse(request, "form.html") return TemplateResponse(request, "form.html")
@app.route("/cookies") @app.route("/cookies")
def cookies(request): def cookies(request):
print("request.COOKIES: ", request.COOKIES) print("request.COOKIES: ", request.COOKIES)
resp = HttpResponse(body="COOKIES! NOM NOM NOM") resp = HttpResponse(body="COOKIES! NOM NOM NOM")
resp.set_cookie(name='nom', value="everyonelovescookies") resp.set_cookie(name="nom", value="everyonelovescookies")
resp.set_cookie(name="nom2", value="seriouslycookies") resp.set_cookie(name="nom2", value="seriouslycookies")
resp.set_cookie( resp.set_cookie(
name="nom3", name="nom3",
value="yumyum", value="yumyum",
partitioned=True, partitioned=True,
expires=datetime.utcnow() + timedelta(seconds=10), expires=datetime.utcnow() + timedelta(seconds=10),
max_age=15 max_age=15,
) )
return resp return resp

1
example2.py
View File

@ -1,4 +1,3 @@
from spiderweb.decorators import csrf_exempt
from spiderweb.main import SpiderwebRouter from spiderweb.main import SpiderwebRouter
from spiderweb.exceptions import ServerError from spiderweb.exceptions import ServerError
from spiderweb.response import ( from spiderweb.response import (

195
poetry.lock generated
View File

@ -1,4 +1,15 @@
# This file is automatically @generated by Poetry 1.8.3 and should not be changed by hand. # This file is automatically @generated by Poetry 1.6.1 and should not be changed by hand.
[[package]]
name = "annotated-types"
version = "0.7.0"
description = "Reusable constraint types to use with typing.Annotated"
optional = false
python-versions = ">=3.8"
files = [
{file = "annotated_types-0.7.0-py3-none-any.whl", hash = "sha256:1f02e8b43a8fbbc3f3e0d4f0f4bfc8131bcb4eebe8849b8e5c773f3a1c582a53"},
{file = "annotated_types-0.7.0.tar.gz", hash = "sha256:aff07c09a53a08bc8cfccb9c85b05f1aa9a2a6f23728d790723543408344ce89"},
]
[[package]] [[package]]
name = "black" name = "black"
@ -197,6 +208,41 @@ ssh = ["bcrypt (>=3.1.5)"]
test = ["certifi", "cryptography-vectors (==43.0.0)", "pretend", "pytest (>=6.2.0)", "pytest-benchmark", "pytest-cov", "pytest-xdist"] test = ["certifi", "cryptography-vectors (==43.0.0)", "pretend", "pytest (>=6.2.0)", "pytest-benchmark", "pytest-cov", "pytest-xdist"]
test-randomorder = ["pytest-randomly"] test-randomorder = ["pytest-randomly"]
[[package]]
name = "dnspython"
version = "2.6.1"
description = "DNS toolkit"
optional = false
python-versions = ">=3.8"
files = [
{file = "dnspython-2.6.1-py3-none-any.whl", hash = "sha256:5ef3b9680161f6fa89daf8ad451b5f1a33b18ae8a1c6778cdf4b43f08c0a6e50"},
{file = "dnspython-2.6.1.tar.gz", hash = "sha256:e8f0f9c23a7b7cb99ded64e6c3a6f3e701d78f50c55e002b839dea7225cff7cc"},
]
[package.extras]
dev = ["black (>=23.1.0)", "coverage (>=7.0)", "flake8 (>=7)", "mypy (>=1.8)", "pylint (>=3)", "pytest (>=7.4)", "pytest-cov (>=4.1.0)", "sphinx (>=7.2.0)", "twine (>=4.0.0)", "wheel (>=0.42.0)"]
dnssec = ["cryptography (>=41)"]
doh = ["h2 (>=4.1.0)", "httpcore (>=1.0.0)", "httpx (>=0.26.0)"]
doq = ["aioquic (>=0.9.25)"]
idna = ["idna (>=3.6)"]
trio = ["trio (>=0.23)"]
wmi = ["wmi (>=1.5.1)"]
[[package]]
name = "email-validator"
version = "2.2.0"
description = "A robust email address syntax and deliverability validation library."
optional = false
python-versions = ">=3.8"
files = [
{file = "email_validator-2.2.0-py3-none-any.whl", hash = "sha256:561977c2d73ce3611850a06fa56b414621e0c8faa9d66f2611407d87465da631"},
{file = "email_validator-2.2.0.tar.gz", hash = "sha256:cb690f344c617a714f22e66ae771445a1ceb46821152df8e165c5f9a364582b7"},
]
[package.dependencies]
dnspython = ">=2.0.0"
idna = ">=2.0.0"
[[package]] [[package]]
name = "gunicorn" name = "gunicorn"
version = "23.0.0" version = "23.0.0"
@ -218,6 +264,17 @@ setproctitle = ["setproctitle"]
testing = ["coverage", "eventlet", "gevent", "pytest", "pytest-cov"] testing = ["coverage", "eventlet", "gevent", "pytest", "pytest-cov"]
tornado = ["tornado (>=0.2)"] tornado = ["tornado (>=0.2)"]
[[package]]
name = "idna"
version = "3.7"
description = "Internationalized Domain Names in Applications (IDNA)"
optional = false
python-versions = ">=3.5"
files = [
{file = "idna-3.7-py3-none-any.whl", hash = "sha256:82fee1fc78add43492d3a1898bfa6d8a904cc97d8427f683ed8e798d07761aa0"},
{file = "idna-3.7.tar.gz", hash = "sha256:028ff3aadf0609c1fd278d8ea3089299412a7a8b9bd005dd08b9f8285bcb5cfc"},
]
[[package]] [[package]]
name = "iniconfig" name = "iniconfig"
version = "2.0.0" version = "2.0.0"
@ -400,6 +457,129 @@ files = [
{file = "pycparser-2.22.tar.gz", hash = "sha256:491c8be9c040f5390f5bf44a5b07752bd07f56edf992381b05c701439eec10f6"}, {file = "pycparser-2.22.tar.gz", hash = "sha256:491c8be9c040f5390f5bf44a5b07752bd07f56edf992381b05c701439eec10f6"},
] ]
[[package]]
name = "pydantic"
version = "2.8.2"
description = "Data validation using Python type hints"
optional = false
python-versions = ">=3.8"
files = [
{file = "pydantic-2.8.2-py3-none-any.whl", hash = "sha256:73ee9fddd406dc318b885c7a2eab8a6472b68b8fb5ba8150949fc3db939f23c8"},
{file = "pydantic-2.8.2.tar.gz", hash = "sha256:6f62c13d067b0755ad1c21a34bdd06c0c12625a22b0fc09c6b149816604f7c2a"},
]
[package.dependencies]
annotated-types = ">=0.4.0"
pydantic-core = "2.20.1"
typing-extensions = [
{version = ">=4.12.2", markers = "python_version >= \"3.13\""},
{version = ">=4.6.1", markers = "python_version < \"3.13\""},
]
[package.extras]
email = ["email-validator (>=2.0.0)"]
[[package]]
name = "pydantic-core"
version = "2.20.1"
description = "Core functionality for Pydantic validation and serialization"
optional = false
python-versions = ">=3.8"
files = [
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{file = "pydantic_core-2.20.1.tar.gz", hash = "sha256:26ca695eeee5f9f1aeeb211ffc12f10bcb6f71e2989988fda61dabd65db878d4"},
]
[package.dependencies]
typing-extensions = ">=4.6.0,<4.7.0 || >4.7.0"
[[package]] [[package]]
name = "pytest" name = "pytest"
version = "8.3.2" version = "8.3.2"
@ -447,7 +627,18 @@ files = [
{file = "ruff-0.5.7.tar.gz", hash = "sha256:8dfc0a458797f5d9fb622dd0efc52d796f23f0a1493a9527f4e49a550ae9a7e5"}, {file = "ruff-0.5.7.tar.gz", hash = "sha256:8dfc0a458797f5d9fb622dd0efc52d796f23f0a1493a9527f4e49a550ae9a7e5"},
] ]
[[package]]
name = "typing-extensions"
version = "4.12.2"
description = "Backported and Experimental Type Hints for Python 3.8+"
optional = false
python-versions = ">=3.8"
files = [
{file = "typing_extensions-4.12.2-py3-none-any.whl", hash = "sha256:04e5ca0351e0f3f85c6853954072df659d0d13fac324d0072316b67d7794700d"},
{file = "typing_extensions-4.12.2.tar.gz", hash = "sha256:1a7ead55c7e559dd4dee8856e3a88b41225abfe1ce8df57b7c13915fe121ffb8"},
]
[metadata] [metadata]
lock-version = "2.0" lock-version = "2.0"
python-versions = "^3.11" python-versions = "^3.11"
content-hash = "e74f9bbb0dad671b46a8e80cbc5776de00b043b8e93ba102eab9be8b4aef2fac" content-hash = "4fa8ab616be6891780300d4d66e9fb936aeac75bd3448e04073b2835acf9aadd"

2
pyproject.toml
View File

@ -10,6 +10,8 @@ python = "^3.11"
peewee = "^3.17.6" peewee = "^3.17.6"
jinja2 = "^3.1.4" jinja2 = "^3.1.4"
cryptography = "^43.0.0" cryptography = "^43.0.0"
email-validator = "^2.2.0"
pydantic = "^2.8.2"
[tool.poetry.group.dev.dependencies] [tool.poetry.group.dev.dependencies]
ruff = "^0.5.5" ruff = "^0.5.5"

2
spiderweb/constants.py
View File

@ -3,4 +3,4 @@ DEFAULT_ENCODING = "ISO-8859-1"
__version__ = "0.9.0" __version__ = "0.9.0"
# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie # https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie
REGEX_COOKIE_NAME = r'^[a-zA-Z0-9\s\(\)<>@,;:\/\\\[\]\?=\{\}\"\t]*$' REGEX_COOKIE_NAME = r"^[a-zA-Z0-9\s\(\)<>@,;:\/\\\[\]\?=\{\}\"\t]*$"

8
spiderweb/example_validator.py Normal file
View File

@ -0,0 +1,8 @@
from pydantic import EmailStr
from spiderweb.middleware.pydantic import SpiderwebModel
class CommentForm(SpiderwebModel):
email: EmailStr
comment: str

39
spiderweb/middleware/pydantic.py Normal file
View File

@ -0,0 +1,39 @@
from typing import get_type_hints
from pydantic import BaseModel
from pydantic_core._pydantic_core import ValidationError
from spiderweb import SpiderwebMiddleware
from spiderweb.request import Request
from spiderweb.response import JsonResponse
class SpiderwebModel(BaseModel, Request):
# type hinting shenanigans that allow us to annotate Request objects
# with the pydantic models we want to validate them with, but doesn't
# break the Request object's ability to be used as a Request object
pass
class PydanticMiddleware(SpiderwebMiddleware):
def process_request(self, request):
if not request.method == "POST":
return
types = get_type_hints(request.handler)
if "request" not in types:
return
try:
data = types["request"].parse_obj(request.POST)
request.validated_data = data
except ValidationError as e:
return self.on_error(request, e)
def on_error(self, request: Request, e: ValidationError):
# Separated out into its own method so that it can be overridden
errors = e.errors()
error_dict = {"message": "Validation error", "errors": []}
# [{'type': 'missing', 'loc': ('comment',), 'msg': 'Field required', 'input': {'email': 'a@a.com'}, 'url': 'https://errors.pydantic.dev/2.8/v/missing'}]
for error in errors:
field = error["loc"][0]
msg = error["msg"]
error_dict["errors"].append(f"{field}: {msg}")
return JsonResponse(status_code=400, data=error_dict)

7
spiderweb/request.py
View File

@ -27,6 +27,8 @@ class Request:
self.POST = {} self.POST = {}
self.META = {} self.META = {}
self.COOKIES = {} self.COOKIES = {}
# only used for the pydantic middleware and only on POST requests
self.validated_data = {}
self.populate_headers() self.populate_headers()
self.populate_meta() self.populate_meta()
@ -67,7 +69,10 @@ class Request:
def populate_cookies(self) -> None: def populate_cookies(self) -> None:
if cookies := self.environ.get("HTTP_COOKIE"): if cookies := self.environ.get("HTTP_COOKIE"):
self.COOKIES = {l.split("=")[0]: l.split("=")[1] for l in cookies.split("; ")} self.COOKIES = {
option.split("=")[0]: option.split("=")[1]
for option in cookies.split("; ")
}
def json(self): def json(self):
return json.loads(self.content) return json.loads(self.content)