File size: 13,684 Bytes
1c60c6e
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
"""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__)