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"""The networks module contains types for common network-related fields."""
from __future__ import annotations as _annotations
import dataclasses as _dataclasses
import re
from ipaddress import IPv4Address, IPv4Interface, IPv4Network, IPv6Address, IPv6Interface, IPv6Network
from typing import TYPE_CHECKING, Any, Union
from pydantic_core import MultiHostUrl, PydanticCustomError, Url, core_schema
from typing_extensions import Annotated, TypeAlias
from ._internal import _fields, _repr, _schema_generation_shared
from ._migration import getattr_migration
from .json_schema import JsonSchemaValue
if TYPE_CHECKING:
import email_validator
NetworkType: TypeAlias = 'str | bytes | int | tuple[str | bytes | int, str | int]'
else:
email_validator = None
__all__ = [
'AnyUrl',
'AnyHttpUrl',
'FileUrl',
'HttpUrl',
'UrlConstraints',
'EmailStr',
'NameEmail',
'IPvAnyAddress',
'IPvAnyInterface',
'IPvAnyNetwork',
'PostgresDsn',
'CockroachDsn',
'AmqpDsn',
'RedisDsn',
'MongoDsn',
'KafkaDsn',
'validate_email',
'MySQLDsn',
'MariaDBDsn',
]
@_dataclasses.dataclass
class UrlConstraints(_fields.PydanticMetadata):
"""Url constraints.
Attributes:
max_length: The maximum length of the url. Defaults to `None`.
allowed_schemes: The allowed schemes. Defaults to `None`.
host_required: Whether the host is required. Defaults to `None`.
default_host: The default host. Defaults to `None`.
default_port: The default port. Defaults to `None`.
default_path: The default path. Defaults to `None`.
"""
max_length: int | None = None
allowed_schemes: list[str] | None = None
host_required: bool | None = None
default_host: str | None = None
default_port: int | None = None
default_path: str | None = None
def __hash__(self) -> int:
return hash(
(
self.max_length,
tuple(self.allowed_schemes) if self.allowed_schemes is not None else None,
self.host_required,
self.default_host,
self.default_port,
self.default_path,
)
)
AnyUrl = Url
"""Base type for all URLs."""
AnyHttpUrl = Annotated[Url, UrlConstraints(allowed_schemes=['http', 'https'])]
"""A type that will accept any http or https URL."""
HttpUrl = Annotated[Url, UrlConstraints(max_length=2083, allowed_schemes=['http', 'https'])]
"""A type that will accept any http or https URL with a max length of 2083 characters."""
FileUrl = Annotated[Url, UrlConstraints(allowed_schemes=['file'])]
"""A type that will accept any file URL."""
PostgresDsn = Annotated[
MultiHostUrl,
UrlConstraints(
host_required=True,
allowed_schemes=[
'postgres',
'postgresql',
'postgresql+asyncpg',
'postgresql+pg8000',
'postgresql+psycopg',
'postgresql+psycopg2',
'postgresql+psycopg2cffi',
'postgresql+py-postgresql',
'postgresql+pygresql',
],
),
]
"""A type that will accept any Postgres DSN."""
CockroachDsn = Annotated[
Url,
UrlConstraints(
host_required=True,
allowed_schemes=[
'cockroachdb',
'cockroachdb+psycopg2',
'cockroachdb+asyncpg',
],
),
]
"""A type that will accept any Cockroach DSN."""
AmqpDsn = Annotated[Url, UrlConstraints(allowed_schemes=['amqp', 'amqps'])]
"""A type that will accept any AMQP DSN."""
RedisDsn = Annotated[
Url,
UrlConstraints(allowed_schemes=['redis', 'rediss'], default_host='localhost', default_port=6379, default_path='/0'),
]
"""A type that will accept any Redis DSN."""
MongoDsn = Union[
Annotated[MultiHostUrl, UrlConstraints(allowed_schemes=['mongodb'], default_port=27017)],
Annotated[MultiHostUrl, UrlConstraints(allowed_schemes=['mongodb+srv'])],
]
"""A type that will accept any MongoDB DSN."""
KafkaDsn = Annotated[Url, UrlConstraints(allowed_schemes=['kafka'], default_host='localhost', default_port=9092)]
"""A type that will accept any Kafka DSN."""
MySQLDsn = Annotated[
Url,
UrlConstraints(
allowed_schemes=[
'mysql',
'mysql+mysqlconnector',
'mysql+aiomysql',
'mysql+asyncmy',
'mysql+mysqldb',
'mysql+pymysql',
'mysql+cymysql',
'mysql+pyodbc',
],
default_port=3306,
),
]
"""A type that will accept any MySQL DSN."""
MariaDBDsn = Annotated[
Url,
UrlConstraints(
allowed_schemes=['mariadb', 'mariadb+mariadbconnector', 'mariadb+pymysql'],
default_port=3306,
),
]
"""A type that will accept any MariaDB DSN."""
def import_email_validator() -> None:
global email_validator
try:
import email_validator
except ImportError as e:
raise ImportError('email-validator is not installed, run `pip install pydantic[email]`') from e
if TYPE_CHECKING:
EmailStr = Annotated[str, ...]
else:
class EmailStr:
"""Validate email addresses.
Example:
```py
from pydantic import BaseModel, EmailStr
class Model(BaseModel):
email: EmailStr
print(Model(email='contact@mail.com'))
#> email='contact@mail.com'
```
"""
@classmethod
def __get_pydantic_core_schema__(
cls,
source: type[Any],
) -> core_schema.CoreSchema:
import_email_validator()
return core_schema.general_after_validator_function(cls._validate, core_schema.str_schema())
@classmethod
def __get_pydantic_json_schema__(
cls, core_schema: core_schema.CoreSchema, handler: _schema_generation_shared.GetJsonSchemaHandler
) -> JsonSchemaValue:
field_schema = handler(core_schema)
field_schema.update(type='string', format='email')
return field_schema
@classmethod
def _validate(cls, __input_value: str, _: core_schema.ValidationInfo) -> str:
return validate_email(__input_value)[1]
class NameEmail(_repr.Representation):
"""Validate a name and email address combination.
Example:
```py
from pydantic import BaseModel, NameEmail
class User(BaseModel):
email: NameEmail
print(User(email='John Doe <john.doe@mail.com>'))
#> email=NameEmail(name='John Doe', email='john.doe@mail.com')
```
Attributes:
name: The name.
email: The email address.
"""
__slots__ = 'name', 'email'
def __init__(self, name: str, email: str):
self.name = name
self.email = email
def __eq__(self, other: Any) -> bool:
return isinstance(other, NameEmail) and (self.name, self.email) == (other.name, other.email)
@classmethod
def __get_pydantic_json_schema__(
cls, core_schema: core_schema.CoreSchema, handler: _schema_generation_shared.GetJsonSchemaHandler
) -> JsonSchemaValue:
field_schema = handler(core_schema)
field_schema.update(type='string', format='name-email')
return field_schema
@classmethod
def __get_pydantic_core_schema__(
cls,
source: type[Any],
) -> core_schema.CoreSchema:
import_email_validator()
return core_schema.general_after_validator_function(
cls._validate,
core_schema.union_schema([core_schema.is_instance_schema(cls), core_schema.str_schema()]),
serialization=core_schema.to_string_ser_schema(),
)
@classmethod
def _validate(cls, __input_value: NameEmail | str, _: core_schema.ValidationInfo) -> NameEmail:
if isinstance(__input_value, cls):
return __input_value
else:
name, email = validate_email(__input_value) # type: ignore[arg-type]
return cls(name, email)
def __str__(self) -> str:
return f'{self.name} <{self.email}>'
class IPvAnyAddress:
"""Validate an IPv4 or IPv6 address."""
__slots__ = ()
def __new__(cls, value: Any) -> IPv4Address | IPv6Address: # type: ignore[misc]
"""Validate an IPv4 or IPv6 address."""
try:
return IPv4Address(value)
except ValueError:
pass
try:
return IPv6Address(value)
except ValueError:
raise PydanticCustomError('ip_any_address', 'value is not a valid IPv4 or IPv6 address')
@classmethod
def __get_pydantic_json_schema__(
cls, core_schema: core_schema.CoreSchema, handler: _schema_generation_shared.GetJsonSchemaHandler
) -> JsonSchemaValue:
field_schema = {}
field_schema.update(type='string', format='ipvanyaddress')
return field_schema
@classmethod
def __get_pydantic_core_schema__(
cls,
source: type[Any],
) -> core_schema.CoreSchema:
return core_schema.general_plain_validator_function(
cls._validate, serialization=core_schema.to_string_ser_schema()
)
@classmethod
def _validate(cls, __input_value: Any, _: core_schema.ValidationInfo) -> IPv4Address | IPv6Address:
return cls(__input_value) # type: ignore[return-value]
class IPvAnyInterface:
"""Validate an IPv4 or IPv6 interface."""
__slots__ = ()
def __new__(cls, value: NetworkType) -> IPv4Interface | IPv6Interface: # type: ignore[misc]
"""Validate an IPv4 or IPv6 interface."""
try:
return IPv4Interface(value)
except ValueError:
pass
try:
return IPv6Interface(value)
except ValueError:
raise PydanticCustomError('ip_any_interface', 'value is not a valid IPv4 or IPv6 interface')
@classmethod
def __get_pydantic_json_schema__(
cls, core_schema: core_schema.CoreSchema, handler: _schema_generation_shared.GetJsonSchemaHandler
) -> JsonSchemaValue:
field_schema = {}
field_schema.update(type='string', format='ipvanyinterface')
return field_schema
@classmethod
def __get_pydantic_core_schema__(
cls,
source: type[Any],
) -> core_schema.CoreSchema:
return core_schema.general_plain_validator_function(
cls._validate, serialization=core_schema.to_string_ser_schema()
)
@classmethod
def _validate(cls, __input_value: NetworkType, _: core_schema.ValidationInfo) -> IPv4Interface | IPv6Interface:
return cls(__input_value) # type: ignore[return-value]
class IPvAnyNetwork:
"""Validate an IPv4 or IPv6 network."""
__slots__ = ()
def __new__(cls, value: NetworkType) -> IPv4Network | IPv6Network: # type: ignore[misc]
"""Validate an IPv4 or IPv6 network."""
# Assume IP Network is defined with a default value for `strict` argument.
# Define your own class if you want to specify network address check strictness.
try:
return IPv4Network(value)
except ValueError:
pass
try:
return IPv6Network(value)
except ValueError:
raise PydanticCustomError('ip_any_network', 'value is not a valid IPv4 or IPv6 network')
@classmethod
def __get_pydantic_json_schema__(
cls, core_schema: core_schema.CoreSchema, handler: _schema_generation_shared.GetJsonSchemaHandler
) -> JsonSchemaValue:
field_schema = {}
field_schema.update(type='string', format='ipvanynetwork')
return field_schema
@classmethod
def __get_pydantic_core_schema__(
cls,
source: type[Any],
) -> core_schema.CoreSchema:
return core_schema.general_plain_validator_function(
cls._validate, serialization=core_schema.to_string_ser_schema()
)
@classmethod
def _validate(cls, __input_value: NetworkType, _: core_schema.ValidationInfo) -> IPv4Network | IPv6Network:
return cls(__input_value) # type: ignore[return-value]
def _build_pretty_email_regex() -> re.Pattern:
name_chars = r'[\w!#$%&\'*+\-/=?^_`{|}~]'
unquoted_name_group = fr'((?:{name_chars}+\s+)*{name_chars}+)'
quoted_name_group = r'"((?:[^"]|\")+)"'
email_group = r'<\s*(.+)\s*>'
return re.compile(rf'\s*(?:{unquoted_name_group}|{quoted_name_group})?\s*{email_group}\s*')
pretty_email_regex = _build_pretty_email_regex()
def validate_email(value: str) -> tuple[str, str]:
"""Email address validation using https://pypi.org/project/email-validator/.
Note:
Note that:
* Raw IP address (literal) domain parts are not allowed.
* "John Doe <local_part@domain.com>" style "pretty" email addresses are processed.
* Spaces are striped from the beginning and end of addresses, but no error is raised.
"""
if email_validator is None:
import_email_validator()
m = pretty_email_regex.fullmatch(value)
name: str | None = None
if m:
unquoted_name, quoted_name, value = m.groups()
name = unquoted_name or quoted_name
email = value.strip()
try:
parts = email_validator.validate_email(email, check_deliverability=False)
except email_validator.EmailNotValidError as e:
raise PydanticCustomError(
'value_error', 'value is not a valid email address: {reason}', {'reason': str(e.args[0])}
) from e
email = parts.normalized
assert email is not None
name = name or parts.local_part
return name, email
__getattr__ = getattr_migration(__name__)
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