__all__ = ("get_client",)
from functools import lru_cache
from urllib.parse import urlparse
from requests import Session
from requests.adapters import HTTPAdapter
from urllib3.util.ssl_ import DEFAULT_CIPHERS # type:ignore
from urllib3.util.ssl_ import create_urllib3_context
from zeep import Client
from zeep.cache import SqliteCache
from zeep.transports import Transport
try:
from zoneinfo import ZoneInfo
except ImportError:
from backports.zoneinfo import ZoneInfo # type: ignore # noqa
TZ_AR = ZoneInfo("America/Argentina/Buenos_Aires")
CIPHERS = DEFAULT_CIPHERS + "HIGH:!DH:!aNULL"
WSDLS = {
("wsaa", False): "https://wsaa.afip.gov.ar/ws/services/LoginCms?wsdl",
("wsfe", False): "https://servicios1.afip.gov.ar/wsfev1/service.asmx?WSDL",
(
"ws_sr_constancia_inscripcion",
False,
): "https://aws.afip.gov.ar/sr-padron/webservices/personaServiceA5?WSDL",
(
"ws_sr_padron_a13",
False,
): "https://aws.afip.gov.ar/sr-padron/webservices/personaServiceA13?WSDL",
("wsaa", True): "https://wsaahomo.afip.gov.ar/ws/services/LoginCms?wsdl",
("wsfe", True): "https://wswhomo.afip.gov.ar/wsfev1/service.asmx?WSDL",
(
"ws_sr_constancia_inscripcion",
True,
): "https://awshomo.afip.gov.ar/sr-padron/webservices/personaServiceA5?WSDL",
(
"ws_sr_padron_a13",
True,
): "https://awshomo.afip.gov.ar/sr-padron/webservices/personaServiceA13?WSDL",
}
class AFIPAdapter(HTTPAdapter):
"""An adapter with reduced security so it'll work with AFIP."""
def init_poolmanager(self, *args, **kwargs):
context = create_urllib3_context(ciphers=CIPHERS)
kwargs["ssl_context"] = context
return super().init_poolmanager(*args, **kwargs)
def proxy_manager_for(self, *args, **kwargs):
context = create_urllib3_context(ciphers=CIPHERS)
kwargs["ssl_context"] = context
return super().proxy_manager_for(*args, **kwargs)
@lru_cache(maxsize=1)
def get_or_create_transport() -> Transport:
"""Create a specially-configured Zeep transport.
This transport does two non-default things:
- Reduces TLS security. Sadly, AFIP only has insecure endpoints, so we're
forced to reduce security to talk to them.
- Cache the WSDL file for a whole day.
This function will only create a transport once, and return the same
transport in subsequent calls.
"""
session = Session()
# For each WSDL, extract the domain, and add it as an exception:
for url in WSDLS.values():
parsed = urlparse(url)
base_url = f"{parsed.scheme}://{parsed.netloc}"
session.mount(base_url, AFIPAdapter())
return Transport(cache=SqliteCache(timeout=86400), session=session)
[docs]@lru_cache(maxsize=32)
def get_client(service_name: str, sandbox=False) -> Client:
"""
Return a client for a given service.
The `sandbox` argument should only be necessary if the client will be
used to make a request. If it will only be used to serialize objects, it is
irrelevant. A caller can avoid the overhead of determining the sandbox mode in the
calling context if only serialization operations will take place.
This function is cached with `lru_cache`, and will re-use existing clients
if possible.
:param service_name: The name of the web services.
:param sandbox: Whether the sandbox (or production) environment should
be used by the returned client.
:returns: A zeep client to communicate with an AFIP web service.
"""
key = (service_name.lower(), sandbox)
try:
return Client(WSDLS[key], transport=get_or_create_transport())
except KeyError:
raise ValueError(f"Unknown service name, {service_name}")