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import importlib
import logging
from typing import Optional, cast, Dict, TypeVar, Any
import requests
from overrides import override
from pydantic import SecretStr
from chromadb.auth import (
ServerAuthCredentialsProvider,
AbstractCredentials,
ClientAuthCredentialsProvider,
AuthInfoType,
ClientAuthProvider,
ClientAuthProtocolAdapter,
SimpleUserIdentity,
)
from chromadb.auth.registry import register_provider, resolve_provider
from chromadb.config import System
from chromadb.telemetry.opentelemetry import (
OpenTelemetryGranularity,
trace_method,
)
T = TypeVar("T")
logger = logging.getLogger(__name__)
class HtpasswdServerAuthCredentialsProvider(ServerAuthCredentialsProvider):
_creds: Dict[str, SecretStr]
def __init__(self, system: System) -> None:
super().__init__(system)
try:
# Equivalent to import onnxruntime
self.bc = importlib.import_module("bcrypt")
except ImportError:
raise ValueError(
"The bcrypt python package is not installed. "
"Please install it with `pip install bcrypt`"
)
@trace_method(
"HtpasswdServerAuthCredentialsProvider.validate_credentials",
OpenTelemetryGranularity.ALL,
)
@override
def validate_credentials(self, credentials: AbstractCredentials[T]) -> bool:
_creds = cast(Dict[str, SecretStr], credentials.get_credentials())
if len(_creds) != 2:
logger.error(
"Returned credentials did match expected format: "
"dict[username:SecretStr, password: SecretStr]"
)
return False
if "username" not in _creds or "password" not in _creds:
logger.error(
"Returned credentials do not contain username or password")
return False
_usr_check = bool(
_creds["username"].get_secret_value()
== self._creds["username"].get_secret_value()
)
return _usr_check and self.bc.checkpw(
_creds["password"].get_secret_value().encode("utf-8"),
self._creds["password"].get_secret_value().encode("utf-8"),
)
@override
def get_user_identity(
self, credentials: AbstractCredentials[T]
) -> Optional[SimpleUserIdentity]:
_creds = cast(Dict[str, SecretStr], credentials.get_credentials())
return SimpleUserIdentity(_creds["username"].get_secret_value())
@register_provider("htpasswd_file")
class HtpasswdFileServerAuthCredentialsProvider(HtpasswdServerAuthCredentialsProvider):
def __init__(self, system: System) -> None:
super().__init__(system)
system.settings.require("chroma_server_auth_credentials_file")
_file = str(system.settings.chroma_server_auth_credentials_file)
with open(_file, "r") as f:
_raw_creds = [v for v in f.readline().strip().split(":")]
self._creds = {
"username": SecretStr(_raw_creds[0]),
"password": SecretStr(_raw_creds[1]),
}
if (
len(self._creds) != 2
or "username" not in self._creds
or "password" not in self._creds
):
raise ValueError(
"Invalid Htpasswd credentials found in "
"[chroma_server_auth_credentials]. "
"Must be <username>:<bcrypt passwd>."
)
class HtpasswdConfigurationServerAuthCredentialsProvider(
HtpasswdServerAuthCredentialsProvider
):
def __init__(self, system: System) -> None:
super().__init__(system)
system.settings.require("chroma_server_auth_credentials")
_raw_creds = (
str(system.settings.chroma_server_auth_credentials).strip().split(":")
)
self._creds = {
"username": SecretStr(_raw_creds[0]),
"password": SecretStr(_raw_creds[1]),
}
if (
len(self._creds) != 2
or "username" not in self._creds
or "password" not in self._creds
):
raise ValueError(
"Invalid Htpasswd credentials found in "
"[chroma_server_auth_credentials]. "
"Must be <username>:<bcrypt passwd>."
)
class RequestsClientAuthProtocolAdapter(
ClientAuthProtocolAdapter[requests.PreparedRequest]
):
class _Session(requests.Session):
_protocol_adapter: ClientAuthProtocolAdapter[requests.PreparedRequest]
def __init__(
self, protocol_adapter: ClientAuthProtocolAdapter[requests.PreparedRequest]
) -> None:
super().__init__()
self._protocol_adapter = protocol_adapter
@override
def send(
self, request: requests.PreparedRequest, **kwargs: Any
) -> requests.Response:
self._protocol_adapter.inject_credentials(request)
return super().send(request, **kwargs)
_session: _Session
_auth_provider: ClientAuthProvider
def __init__(self, system: System) -> None:
super().__init__(system)
system.settings.require("chroma_client_auth_provider")
self._auth_provider = cast(
ClientAuthProvider,
system.require(
resolve_provider(
str(system.settings.chroma_client_auth_provider), ClientAuthProvider
),
),
)
self._session = self._Session(self)
self._auth_header = self._auth_provider.authenticate()
@property
def session(self) -> requests.Session:
return self._session
@override
def inject_credentials(self, injection_context: requests.PreparedRequest) -> None:
if self._auth_header.get_auth_info_type() == AuthInfoType.HEADER:
_header_info = self._auth_header.get_auth_info()
if isinstance(_header_info, tuple):
injection_context.headers[_header_info[0]] = _header_info[
1
].get_secret_value()
else:
for header in _header_info:
injection_context.headers[header[0]
] = header[1].get_secret_value()
else:
raise ValueError(
f"Unsupported auth type: {self._auth_header.get_auth_info_type()}"
)
class ConfigurationClientAuthCredentialsProvider(
ClientAuthCredentialsProvider[SecretStr]
):
_creds: SecretStr
def __init__(self, system: System) -> None:
super().__init__(system)
system.settings.require("chroma_client_auth_credentials")
self._creds = SecretStr(
str(system.settings.chroma_client_auth_credentials))
@override
def get_credentials(self) -> SecretStr:
return self._creds
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