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METHODS_WITH_BODY = {"GET", "HEAD", "POST", "PUT", "DELETE", "PATCH"}
REF_PREFIX = "#/components/schemas/"
REF_TEMPLATE = "#/components/schemas/{model}"

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import json
from typing import Any, Dict, Optional
from fastapi.encoders import jsonable_encoder
from starlette.responses import HTMLResponse
from typing_extensions import Annotated, Doc
swagger_ui_default_parameters: Annotated[
Dict[str, Any],
Doc(
"""
Default configurations for Swagger UI.
You can use it as a template to add any other configurations needed.
"""
),
] = {
"dom_id": "#swagger-ui",
"layout": "BaseLayout",
"deepLinking": True,
"showExtensions": True,
"showCommonExtensions": True,
}
def get_swagger_ui_html(
*,
openapi_url: Annotated[
str,
Doc(
"""
The OpenAPI URL that Swagger UI should load and use.
This is normally done automatically by FastAPI using the default URL
`/openapi.json`.
"""
),
],
title: Annotated[
str,
Doc(
"""
The HTML `<title>` content, normally shown in the browser tab.
"""
),
],
swagger_js_url: Annotated[
str,
Doc(
"""
The URL to use to load the Swagger UI JavaScript.
It is normally set to a CDN URL.
"""
),
] = "https://cdn.jsdelivr.net/npm/swagger-ui-dist@5/swagger-ui-bundle.js",
swagger_css_url: Annotated[
str,
Doc(
"""
The URL to use to load the Swagger UI CSS.
It is normally set to a CDN URL.
"""
),
] = "https://cdn.jsdelivr.net/npm/swagger-ui-dist@5/swagger-ui.css",
swagger_favicon_url: Annotated[
str,
Doc(
"""
The URL of the favicon to use. It is normally shown in the browser tab.
"""
),
] = "https://fastapi.tiangolo.com/img/favicon.png",
oauth2_redirect_url: Annotated[
Optional[str],
Doc(
"""
The OAuth2 redirect URL, it is normally automatically handled by FastAPI.
"""
),
] = None,
init_oauth: Annotated[
Optional[Dict[str, Any]],
Doc(
"""
A dictionary with Swagger UI OAuth2 initialization configurations.
"""
),
] = None,
swagger_ui_parameters: Annotated[
Optional[Dict[str, Any]],
Doc(
"""
Configuration parameters for Swagger UI.
It defaults to [swagger_ui_default_parameters][fastapi.openapi.docs.swagger_ui_default_parameters].
"""
),
] = None,
) -> HTMLResponse:
"""
Generate and return the HTML that loads Swagger UI for the interactive
API docs (normally served at `/docs`).
You would only call this function yourself if you needed to override some parts,
for example the URLs to use to load Swagger UI's JavaScript and CSS.
Read more about it in the
[FastAPI docs for Configure Swagger UI](https://fastapi.tiangolo.com/how-to/configure-swagger-ui/)
and the [FastAPI docs for Custom Docs UI Static Assets (Self-Hosting)](https://fastapi.tiangolo.com/how-to/custom-docs-ui-assets/).
"""
current_swagger_ui_parameters = swagger_ui_default_parameters.copy()
if swagger_ui_parameters:
current_swagger_ui_parameters.update(swagger_ui_parameters)
html = f"""
<!DOCTYPE html>
<html>
<head>
<link type="text/css" rel="stylesheet" href="{swagger_css_url}">
<link rel="shortcut icon" href="{swagger_favicon_url}">
<title>{title}</title>
</head>
<body>
<div id="swagger-ui">
</div>
<script src="{swagger_js_url}"></script>
<!-- `SwaggerUIBundle` is now available on the page -->
<script>
const ui = SwaggerUIBundle({{
url: '{openapi_url}',
"""
for key, value in current_swagger_ui_parameters.items():
html += f"{json.dumps(key)}: {json.dumps(jsonable_encoder(value))},\n"
if oauth2_redirect_url:
html += f"oauth2RedirectUrl: window.location.origin + '{oauth2_redirect_url}',"
html += """
presets: [
SwaggerUIBundle.presets.apis,
SwaggerUIBundle.SwaggerUIStandalonePreset
],
})"""
if init_oauth:
html += f"""
ui.initOAuth({json.dumps(jsonable_encoder(init_oauth))})
"""
html += """
</script>
</body>
</html>
"""
return HTMLResponse(html)
def get_redoc_html(
*,
openapi_url: Annotated[
str,
Doc(
"""
The OpenAPI URL that ReDoc should load and use.
This is normally done automatically by FastAPI using the default URL
`/openapi.json`.
"""
),
],
title: Annotated[
str,
Doc(
"""
The HTML `<title>` content, normally shown in the browser tab.
"""
),
],
redoc_js_url: Annotated[
str,
Doc(
"""
The URL to use to load the ReDoc JavaScript.
It is normally set to a CDN URL.
"""
),
] = "https://cdn.jsdelivr.net/npm/redoc@next/bundles/redoc.standalone.js",
redoc_favicon_url: Annotated[
str,
Doc(
"""
The URL of the favicon to use. It is normally shown in the browser tab.
"""
),
] = "https://fastapi.tiangolo.com/img/favicon.png",
with_google_fonts: Annotated[
bool,
Doc(
"""
Load and use Google Fonts.
"""
),
] = True,
) -> HTMLResponse:
"""
Generate and return the HTML response that loads ReDoc for the alternative
API docs (normally served at `/redoc`).
You would only call this function yourself if you needed to override some parts,
for example the URLs to use to load ReDoc's JavaScript and CSS.
Read more about it in the
[FastAPI docs for Custom Docs UI Static Assets (Self-Hosting)](https://fastapi.tiangolo.com/how-to/custom-docs-ui-assets/).
"""
html = f"""
<!DOCTYPE html>
<html>
<head>
<title>{title}</title>
<!-- needed for adaptive design -->
<meta charset="utf-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1">
"""
if with_google_fonts:
html += """
<link href="https://fonts.googleapis.com/css?family=Montserrat:300,400,700|Roboto:300,400,700" rel="stylesheet">
"""
html += f"""
<link rel="shortcut icon" href="{redoc_favicon_url}">
<!--
ReDoc doesn't change outer page styles
-->
<style>
body {{
margin: 0;
padding: 0;
}}
</style>
</head>
<body>
<noscript>
ReDoc requires Javascript to function. Please enable it to browse the documentation.
</noscript>
<redoc spec-url="{openapi_url}"></redoc>
<script src="{redoc_js_url}"> </script>
</body>
</html>
"""
return HTMLResponse(html)
def get_swagger_ui_oauth2_redirect_html() -> HTMLResponse:
"""
Generate the HTML response with the OAuth2 redirection for Swagger UI.
You normally don't need to use or change this.
"""
# copied from https://github.com/swagger-api/swagger-ui/blob/v4.14.0/dist/oauth2-redirect.html
html = """
<!doctype html>
<html lang="en-US">
<head>
<title>Swagger UI: OAuth2 Redirect</title>
</head>
<body>
<script>
'use strict';
function run () {
var oauth2 = window.opener.swaggerUIRedirectOauth2;
var sentState = oauth2.state;
var redirectUrl = oauth2.redirectUrl;
var isValid, qp, arr;
if (/code|token|error/.test(window.location.hash)) {
qp = window.location.hash.substring(1).replace('?', '&');
} else {
qp = location.search.substring(1);
}
arr = qp.split("&");
arr.forEach(function (v,i,_arr) { _arr[i] = '"' + v.replace('=', '":"') + '"';});
qp = qp ? JSON.parse('{' + arr.join() + '}',
function (key, value) {
return key === "" ? value : decodeURIComponent(value);
}
) : {};
isValid = qp.state === sentState;
if ((
oauth2.auth.schema.get("flow") === "accessCode" ||
oauth2.auth.schema.get("flow") === "authorizationCode" ||
oauth2.auth.schema.get("flow") === "authorization_code"
) && !oauth2.auth.code) {
if (!isValid) {
oauth2.errCb({
authId: oauth2.auth.name,
source: "auth",
level: "warning",
message: "Authorization may be unsafe, passed state was changed in server. The passed state wasn't returned from auth server."
});
}
if (qp.code) {
delete oauth2.state;
oauth2.auth.code = qp.code;
oauth2.callback({auth: oauth2.auth, redirectUrl: redirectUrl});
} else {
let oauthErrorMsg;
if (qp.error) {
oauthErrorMsg = "["+qp.error+"]: " +
(qp.error_description ? qp.error_description+ ". " : "no accessCode received from the server. ") +
(qp.error_uri ? "More info: "+qp.error_uri : "");
}
oauth2.errCb({
authId: oauth2.auth.name,
source: "auth",
level: "error",
message: oauthErrorMsg || "[Authorization failed]: no accessCode received from the server."
});
}
} else {
oauth2.callback({auth: oauth2.auth, token: qp, isValid: isValid, redirectUrl: redirectUrl});
}
window.close();
}
if (document.readyState !== 'loading') {
run();
} else {
document.addEventListener('DOMContentLoaded', function () {
run();
});
}
</script>
</body>
</html>
"""
return HTMLResponse(content=html)

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from enum import Enum
from typing import Any, Callable, Dict, Iterable, List, Optional, Set, Type, Union
from fastapi._compat import (
PYDANTIC_V2,
CoreSchema,
GetJsonSchemaHandler,
JsonSchemaValue,
_model_rebuild,
with_info_plain_validator_function,
)
from fastapi.logger import logger
from pydantic import AnyUrl, BaseModel, Field
from typing_extensions import Annotated, Literal, TypedDict
from typing_extensions import deprecated as typing_deprecated
try:
import email_validator
assert email_validator # make autoflake ignore the unused import
from pydantic import EmailStr
except ImportError: # pragma: no cover
class EmailStr(str): # type: ignore
@classmethod
def __get_validators__(cls) -> Iterable[Callable[..., Any]]:
yield cls.validate
@classmethod
def validate(cls, v: Any) -> str:
logger.warning(
"email-validator not installed, email fields will be treated as str.\n"
"To install, run: pip install email-validator"
)
return str(v)
@classmethod
def _validate(cls, __input_value: Any, _: Any) -> str:
logger.warning(
"email-validator not installed, email fields will be treated as str.\n"
"To install, run: pip install email-validator"
)
return str(__input_value)
@classmethod
def __get_pydantic_json_schema__(
cls, core_schema: CoreSchema, handler: GetJsonSchemaHandler
) -> JsonSchemaValue:
return {"type": "string", "format": "email"}
@classmethod
def __get_pydantic_core_schema__(
cls, source: Type[Any], handler: Callable[[Any], CoreSchema]
) -> CoreSchema:
return with_info_plain_validator_function(cls._validate)
class BaseModelWithConfig(BaseModel):
if PYDANTIC_V2:
model_config = {"extra": "allow"}
else:
class Config:
extra = "allow"
class Contact(BaseModelWithConfig):
name: Optional[str] = None
url: Optional[AnyUrl] = None
email: Optional[EmailStr] = None
class License(BaseModelWithConfig):
name: str
identifier: Optional[str] = None
url: Optional[AnyUrl] = None
class Info(BaseModelWithConfig):
title: str
summary: Optional[str] = None
description: Optional[str] = None
termsOfService: Optional[str] = None
contact: Optional[Contact] = None
license: Optional[License] = None
version: str
class ServerVariable(BaseModelWithConfig):
enum: Annotated[Optional[List[str]], Field(min_length=1)] = None
default: str
description: Optional[str] = None
class Server(BaseModelWithConfig):
url: Union[AnyUrl, str]
description: Optional[str] = None
variables: Optional[Dict[str, ServerVariable]] = None
class Reference(BaseModel):
ref: str = Field(alias="$ref")
class Discriminator(BaseModel):
propertyName: str
mapping: Optional[Dict[str, str]] = None
class XML(BaseModelWithConfig):
name: Optional[str] = None
namespace: Optional[str] = None
prefix: Optional[str] = None
attribute: Optional[bool] = None
wrapped: Optional[bool] = None
class ExternalDocumentation(BaseModelWithConfig):
description: Optional[str] = None
url: AnyUrl
class Schema(BaseModelWithConfig):
# Ref: JSON Schema 2020-12: https://json-schema.org/draft/2020-12/json-schema-core.html#name-the-json-schema-core-vocabu
# Core Vocabulary
schema_: Optional[str] = Field(default=None, alias="$schema")
vocabulary: Optional[str] = Field(default=None, alias="$vocabulary")
id: Optional[str] = Field(default=None, alias="$id")
anchor: Optional[str] = Field(default=None, alias="$anchor")
dynamicAnchor: Optional[str] = Field(default=None, alias="$dynamicAnchor")
ref: Optional[str] = Field(default=None, alias="$ref")
dynamicRef: Optional[str] = Field(default=None, alias="$dynamicRef")
defs: Optional[Dict[str, "SchemaOrBool"]] = Field(default=None, alias="$defs")
comment: Optional[str] = Field(default=None, alias="$comment")
# Ref: JSON Schema 2020-12: https://json-schema.org/draft/2020-12/json-schema-core.html#name-a-vocabulary-for-applying-s
# A Vocabulary for Applying Subschemas
allOf: Optional[List["SchemaOrBool"]] = None
anyOf: Optional[List["SchemaOrBool"]] = None
oneOf: Optional[List["SchemaOrBool"]] = None
not_: Optional["SchemaOrBool"] = Field(default=None, alias="not")
if_: Optional["SchemaOrBool"] = Field(default=None, alias="if")
then: Optional["SchemaOrBool"] = None
else_: Optional["SchemaOrBool"] = Field(default=None, alias="else")
dependentSchemas: Optional[Dict[str, "SchemaOrBool"]] = None
prefixItems: Optional[List["SchemaOrBool"]] = None
# TODO: uncomment and remove below when deprecating Pydantic v1
# It generales a list of schemas for tuples, before prefixItems was available
# items: Optional["SchemaOrBool"] = None
items: Optional[Union["SchemaOrBool", List["SchemaOrBool"]]] = None
contains: Optional["SchemaOrBool"] = None
properties: Optional[Dict[str, "SchemaOrBool"]] = None
patternProperties: Optional[Dict[str, "SchemaOrBool"]] = None
additionalProperties: Optional["SchemaOrBool"] = None
propertyNames: Optional["SchemaOrBool"] = None
unevaluatedItems: Optional["SchemaOrBool"] = None
unevaluatedProperties: Optional["SchemaOrBool"] = None
# Ref: JSON Schema Validation 2020-12: https://json-schema.org/draft/2020-12/json-schema-validation.html#name-a-vocabulary-for-structural
# A Vocabulary for Structural Validation
type: Optional[str] = None
enum: Optional[List[Any]] = None
const: Optional[Any] = None
multipleOf: Optional[float] = Field(default=None, gt=0)
maximum: Optional[float] = None
exclusiveMaximum: Optional[float] = None
minimum: Optional[float] = None
exclusiveMinimum: Optional[float] = None
maxLength: Optional[int] = Field(default=None, ge=0)
minLength: Optional[int] = Field(default=None, ge=0)
pattern: Optional[str] = None
maxItems: Optional[int] = Field(default=None, ge=0)
minItems: Optional[int] = Field(default=None, ge=0)
uniqueItems: Optional[bool] = None
maxContains: Optional[int] = Field(default=None, ge=0)
minContains: Optional[int] = Field(default=None, ge=0)
maxProperties: Optional[int] = Field(default=None, ge=0)
minProperties: Optional[int] = Field(default=None, ge=0)
required: Optional[List[str]] = None
dependentRequired: Optional[Dict[str, Set[str]]] = None
# Ref: JSON Schema Validation 2020-12: https://json-schema.org/draft/2020-12/json-schema-validation.html#name-vocabularies-for-semantic-c
# Vocabularies for Semantic Content With "format"
format: Optional[str] = None
# Ref: JSON Schema Validation 2020-12: https://json-schema.org/draft/2020-12/json-schema-validation.html#name-a-vocabulary-for-the-conten
# A Vocabulary for the Contents of String-Encoded Data
contentEncoding: Optional[str] = None
contentMediaType: Optional[str] = None
contentSchema: Optional["SchemaOrBool"] = None
# Ref: JSON Schema Validation 2020-12: https://json-schema.org/draft/2020-12/json-schema-validation.html#name-a-vocabulary-for-basic-meta
# A Vocabulary for Basic Meta-Data Annotations
title: Optional[str] = None
description: Optional[str] = None
default: Optional[Any] = None
deprecated: Optional[bool] = None
readOnly: Optional[bool] = None
writeOnly: Optional[bool] = None
examples: Optional[List[Any]] = None
# Ref: OpenAPI 3.1.0: https://github.com/OAI/OpenAPI-Specification/blob/main/versions/3.1.0.md#schema-object
# Schema Object
discriminator: Optional[Discriminator] = None
xml: Optional[XML] = None
externalDocs: Optional[ExternalDocumentation] = None
example: Annotated[
Optional[Any],
typing_deprecated(
"Deprecated in OpenAPI 3.1.0 that now uses JSON Schema 2020-12, "
"although still supported. Use examples instead."
),
] = None
# Ref: https://json-schema.org/draft/2020-12/json-schema-core.html#name-json-schema-documents
# A JSON Schema MUST be an object or a boolean.
SchemaOrBool = Union[Schema, bool]
class Example(TypedDict, total=False):
summary: Optional[str]
description: Optional[str]
value: Optional[Any]
externalValue: Optional[AnyUrl]
if PYDANTIC_V2: # type: ignore [misc]
__pydantic_config__ = {"extra": "allow"}
else:
class Config:
extra = "allow"
class ParameterInType(Enum):
query = "query"
header = "header"
path = "path"
cookie = "cookie"
class Encoding(BaseModelWithConfig):
contentType: Optional[str] = None
headers: Optional[Dict[str, Union["Header", Reference]]] = None
style: Optional[str] = None
explode: Optional[bool] = None
allowReserved: Optional[bool] = None
class MediaType(BaseModelWithConfig):
schema_: Optional[Union[Schema, Reference]] = Field(default=None, alias="schema")
example: Optional[Any] = None
examples: Optional[Dict[str, Union[Example, Reference]]] = None
encoding: Optional[Dict[str, Encoding]] = None
class ParameterBase(BaseModelWithConfig):
description: Optional[str] = None
required: Optional[bool] = None
deprecated: Optional[bool] = None
# Serialization rules for simple scenarios
style: Optional[str] = None
explode: Optional[bool] = None
allowReserved: Optional[bool] = None
schema_: Optional[Union[Schema, Reference]] = Field(default=None, alias="schema")
example: Optional[Any] = None
examples: Optional[Dict[str, Union[Example, Reference]]] = None
# Serialization rules for more complex scenarios
content: Optional[Dict[str, MediaType]] = None
class Parameter(ParameterBase):
name: str
in_: ParameterInType = Field(alias="in")
class Header(ParameterBase):
pass
class RequestBody(BaseModelWithConfig):
description: Optional[str] = None
content: Dict[str, MediaType]
required: Optional[bool] = None
class Link(BaseModelWithConfig):
operationRef: Optional[str] = None
operationId: Optional[str] = None
parameters: Optional[Dict[str, Union[Any, str]]] = None
requestBody: Optional[Union[Any, str]] = None
description: Optional[str] = None
server: Optional[Server] = None
class Response(BaseModelWithConfig):
description: str
headers: Optional[Dict[str, Union[Header, Reference]]] = None
content: Optional[Dict[str, MediaType]] = None
links: Optional[Dict[str, Union[Link, Reference]]] = None
class Operation(BaseModelWithConfig):
tags: Optional[List[str]] = None
summary: Optional[str] = None
description: Optional[str] = None
externalDocs: Optional[ExternalDocumentation] = None
operationId: Optional[str] = None
parameters: Optional[List[Union[Parameter, Reference]]] = None
requestBody: Optional[Union[RequestBody, Reference]] = None
# Using Any for Specification Extensions
responses: Optional[Dict[str, Union[Response, Any]]] = None
callbacks: Optional[Dict[str, Union[Dict[str, "PathItem"], Reference]]] = None
deprecated: Optional[bool] = None
security: Optional[List[Dict[str, List[str]]]] = None
servers: Optional[List[Server]] = None
class PathItem(BaseModelWithConfig):
ref: Optional[str] = Field(default=None, alias="$ref")
summary: Optional[str] = None
description: Optional[str] = None
get: Optional[Operation] = None
put: Optional[Operation] = None
post: Optional[Operation] = None
delete: Optional[Operation] = None
options: Optional[Operation] = None
head: Optional[Operation] = None
patch: Optional[Operation] = None
trace: Optional[Operation] = None
servers: Optional[List[Server]] = None
parameters: Optional[List[Union[Parameter, Reference]]] = None
class SecuritySchemeType(Enum):
apiKey = "apiKey"
http = "http"
oauth2 = "oauth2"
openIdConnect = "openIdConnect"
class SecurityBase(BaseModelWithConfig):
type_: SecuritySchemeType = Field(alias="type")
description: Optional[str] = None
class APIKeyIn(Enum):
query = "query"
header = "header"
cookie = "cookie"
class APIKey(SecurityBase):
type_: SecuritySchemeType = Field(default=SecuritySchemeType.apiKey, alias="type")
in_: APIKeyIn = Field(alias="in")
name: str
class HTTPBase(SecurityBase):
type_: SecuritySchemeType = Field(default=SecuritySchemeType.http, alias="type")
scheme: str
class HTTPBearer(HTTPBase):
scheme: Literal["bearer"] = "bearer"
bearerFormat: Optional[str] = None
class OAuthFlow(BaseModelWithConfig):
refreshUrl: Optional[str] = None
scopes: Dict[str, str] = {}
class OAuthFlowImplicit(OAuthFlow):
authorizationUrl: str
class OAuthFlowPassword(OAuthFlow):
tokenUrl: str
class OAuthFlowClientCredentials(OAuthFlow):
tokenUrl: str
class OAuthFlowAuthorizationCode(OAuthFlow):
authorizationUrl: str
tokenUrl: str
class OAuthFlows(BaseModelWithConfig):
implicit: Optional[OAuthFlowImplicit] = None
password: Optional[OAuthFlowPassword] = None
clientCredentials: Optional[OAuthFlowClientCredentials] = None
authorizationCode: Optional[OAuthFlowAuthorizationCode] = None
class OAuth2(SecurityBase):
type_: SecuritySchemeType = Field(default=SecuritySchemeType.oauth2, alias="type")
flows: OAuthFlows
class OpenIdConnect(SecurityBase):
type_: SecuritySchemeType = Field(
default=SecuritySchemeType.openIdConnect, alias="type"
)
openIdConnectUrl: str
SecurityScheme = Union[APIKey, HTTPBase, OAuth2, OpenIdConnect, HTTPBearer]
class Components(BaseModelWithConfig):
schemas: Optional[Dict[str, Union[Schema, Reference]]] = None
responses: Optional[Dict[str, Union[Response, Reference]]] = None
parameters: Optional[Dict[str, Union[Parameter, Reference]]] = None
examples: Optional[Dict[str, Union[Example, Reference]]] = None
requestBodies: Optional[Dict[str, Union[RequestBody, Reference]]] = None
headers: Optional[Dict[str, Union[Header, Reference]]] = None
securitySchemes: Optional[Dict[str, Union[SecurityScheme, Reference]]] = None
links: Optional[Dict[str, Union[Link, Reference]]] = None
# Using Any for Specification Extensions
callbacks: Optional[Dict[str, Union[Dict[str, PathItem], Reference, Any]]] = None
pathItems: Optional[Dict[str, Union[PathItem, Reference]]] = None
class Tag(BaseModelWithConfig):
name: str
description: Optional[str] = None
externalDocs: Optional[ExternalDocumentation] = None
class OpenAPI(BaseModelWithConfig):
openapi: str
info: Info
jsonSchemaDialect: Optional[str] = None
servers: Optional[List[Server]] = None
# Using Any for Specification Extensions
paths: Optional[Dict[str, Union[PathItem, Any]]] = None
webhooks: Optional[Dict[str, Union[PathItem, Reference]]] = None
components: Optional[Components] = None
security: Optional[List[Dict[str, List[str]]]] = None
tags: Optional[List[Tag]] = None
externalDocs: Optional[ExternalDocumentation] = None
_model_rebuild(Schema)
_model_rebuild(Operation)
_model_rebuild(Encoding)

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import http.client
import inspect
import warnings
from typing import Any, Dict, List, Optional, Sequence, Set, Tuple, Type, Union, cast
from fastapi import routing
from fastapi._compat import (
GenerateJsonSchema,
JsonSchemaValue,
ModelField,
Undefined,
get_compat_model_name_map,
get_definitions,
get_schema_from_model_field,
lenient_issubclass,
)
from fastapi.datastructures import DefaultPlaceholder
from fastapi.dependencies.models import Dependant
from fastapi.dependencies.utils import (
_get_flat_fields_from_params,
get_flat_dependant,
get_flat_params,
)
from fastapi.encoders import jsonable_encoder
from fastapi.openapi.constants import METHODS_WITH_BODY, REF_PREFIX, REF_TEMPLATE
from fastapi.openapi.models import OpenAPI
from fastapi.params import Body, ParamTypes
from fastapi.responses import Response
from fastapi.types import ModelNameMap
from fastapi.utils import (
deep_dict_update,
generate_operation_id_for_path,
is_body_allowed_for_status_code,
)
from pydantic import BaseModel
from starlette.responses import JSONResponse
from starlette.routing import BaseRoute
from starlette.status import HTTP_422_UNPROCESSABLE_ENTITY
from typing_extensions import Literal
validation_error_definition = {
"title": "ValidationError",
"type": "object",
"properties": {
"loc": {
"title": "Location",
"type": "array",
"items": {"anyOf": [{"type": "string"}, {"type": "integer"}]},
},
"msg": {"title": "Message", "type": "string"},
"type": {"title": "Error Type", "type": "string"},
},
"required": ["loc", "msg", "type"],
}
validation_error_response_definition = {
"title": "HTTPValidationError",
"type": "object",
"properties": {
"detail": {
"title": "Detail",
"type": "array",
"items": {"$ref": REF_PREFIX + "ValidationError"},
}
},
}
status_code_ranges: Dict[str, str] = {
"1XX": "Information",
"2XX": "Success",
"3XX": "Redirection",
"4XX": "Client Error",
"5XX": "Server Error",
"DEFAULT": "Default Response",
}
def get_openapi_security_definitions(
flat_dependant: Dependant,
) -> Tuple[Dict[str, Any], List[Dict[str, Any]]]:
security_definitions = {}
operation_security = []
for security_requirement in flat_dependant.security_requirements:
security_definition = jsonable_encoder(
security_requirement.security_scheme.model,
by_alias=True,
exclude_none=True,
)
security_name = security_requirement.security_scheme.scheme_name
security_definitions[security_name] = security_definition
operation_security.append({security_name: security_requirement.scopes})
return security_definitions, operation_security
def _get_openapi_operation_parameters(
*,
dependant: Dependant,
schema_generator: GenerateJsonSchema,
model_name_map: ModelNameMap,
field_mapping: Dict[
Tuple[ModelField, Literal["validation", "serialization"]], JsonSchemaValue
],
separate_input_output_schemas: bool = True,
) -> List[Dict[str, Any]]:
parameters = []
flat_dependant = get_flat_dependant(dependant, skip_repeats=True)
path_params = _get_flat_fields_from_params(flat_dependant.path_params)
query_params = _get_flat_fields_from_params(flat_dependant.query_params)
header_params = _get_flat_fields_from_params(flat_dependant.header_params)
cookie_params = _get_flat_fields_from_params(flat_dependant.cookie_params)
parameter_groups = [
(ParamTypes.path, path_params),
(ParamTypes.query, query_params),
(ParamTypes.header, header_params),
(ParamTypes.cookie, cookie_params),
]
default_convert_underscores = True
if len(flat_dependant.header_params) == 1:
first_field = flat_dependant.header_params[0]
if lenient_issubclass(first_field.type_, BaseModel):
default_convert_underscores = getattr(
first_field.field_info, "convert_underscores", True
)
for param_type, param_group in parameter_groups:
for param in param_group:
field_info = param.field_info
# field_info = cast(Param, field_info)
if not getattr(field_info, "include_in_schema", True):
continue
param_schema = get_schema_from_model_field(
field=param,
schema_generator=schema_generator,
model_name_map=model_name_map,
field_mapping=field_mapping,
separate_input_output_schemas=separate_input_output_schemas,
)
name = param.alias
convert_underscores = getattr(
param.field_info,
"convert_underscores",
default_convert_underscores,
)
if (
param_type == ParamTypes.header
and param.alias == param.name
and convert_underscores
):
name = param.name.replace("_", "-")
parameter = {
"name": name,
"in": param_type.value,
"required": param.required,
"schema": param_schema,
}
if field_info.description:
parameter["description"] = field_info.description
openapi_examples = getattr(field_info, "openapi_examples", None)
example = getattr(field_info, "example", None)
if openapi_examples:
parameter["examples"] = jsonable_encoder(openapi_examples)
elif example != Undefined:
parameter["example"] = jsonable_encoder(example)
if getattr(field_info, "deprecated", None):
parameter["deprecated"] = True
parameters.append(parameter)
return parameters
def get_openapi_operation_request_body(
*,
body_field: Optional[ModelField],
schema_generator: GenerateJsonSchema,
model_name_map: ModelNameMap,
field_mapping: Dict[
Tuple[ModelField, Literal["validation", "serialization"]], JsonSchemaValue
],
separate_input_output_schemas: bool = True,
) -> Optional[Dict[str, Any]]:
if not body_field:
return None
assert isinstance(body_field, ModelField)
body_schema = get_schema_from_model_field(
field=body_field,
schema_generator=schema_generator,
model_name_map=model_name_map,
field_mapping=field_mapping,
separate_input_output_schemas=separate_input_output_schemas,
)
field_info = cast(Body, body_field.field_info)
request_media_type = field_info.media_type
required = body_field.required
request_body_oai: Dict[str, Any] = {}
if required:
request_body_oai["required"] = required
request_media_content: Dict[str, Any] = {"schema": body_schema}
if field_info.openapi_examples:
request_media_content["examples"] = jsonable_encoder(
field_info.openapi_examples
)
elif field_info.example != Undefined:
request_media_content["example"] = jsonable_encoder(field_info.example)
request_body_oai["content"] = {request_media_type: request_media_content}
return request_body_oai
def generate_operation_id(
*, route: routing.APIRoute, method: str
) -> str: # pragma: nocover
warnings.warn(
"fastapi.openapi.utils.generate_operation_id() was deprecated, "
"it is not used internally, and will be removed soon",
DeprecationWarning,
stacklevel=2,
)
if route.operation_id:
return route.operation_id
path: str = route.path_format
return generate_operation_id_for_path(name=route.name, path=path, method=method)
def generate_operation_summary(*, route: routing.APIRoute, method: str) -> str:
if route.summary:
return route.summary
return route.name.replace("_", " ").title()
def get_openapi_operation_metadata(
*, route: routing.APIRoute, method: str, operation_ids: Set[str]
) -> Dict[str, Any]:
operation: Dict[str, Any] = {}
if route.tags:
operation["tags"] = route.tags
operation["summary"] = generate_operation_summary(route=route, method=method)
if route.description:
operation["description"] = route.description
operation_id = route.operation_id or route.unique_id
if operation_id in operation_ids:
message = (
f"Duplicate Operation ID {operation_id} for function "
+ f"{route.endpoint.__name__}"
)
file_name = getattr(route.endpoint, "__globals__", {}).get("__file__")
if file_name:
message += f" at {file_name}"
warnings.warn(message, stacklevel=1)
operation_ids.add(operation_id)
operation["operationId"] = operation_id
if route.deprecated:
operation["deprecated"] = route.deprecated
return operation
def get_openapi_path(
*,
route: routing.APIRoute,
operation_ids: Set[str],
schema_generator: GenerateJsonSchema,
model_name_map: ModelNameMap,
field_mapping: Dict[
Tuple[ModelField, Literal["validation", "serialization"]], JsonSchemaValue
],
separate_input_output_schemas: bool = True,
) -> Tuple[Dict[str, Any], Dict[str, Any], Dict[str, Any]]:
path = {}
security_schemes: Dict[str, Any] = {}
definitions: Dict[str, Any] = {}
assert route.methods is not None, "Methods must be a list"
if isinstance(route.response_class, DefaultPlaceholder):
current_response_class: Type[Response] = route.response_class.value
else:
current_response_class = route.response_class
assert current_response_class, "A response class is needed to generate OpenAPI"
route_response_media_type: Optional[str] = current_response_class.media_type
if route.include_in_schema:
for method in route.methods:
operation = get_openapi_operation_metadata(
route=route, method=method, operation_ids=operation_ids
)
parameters: List[Dict[str, Any]] = []
flat_dependant = get_flat_dependant(route.dependant, skip_repeats=True)
security_definitions, operation_security = get_openapi_security_definitions(
flat_dependant=flat_dependant
)
if operation_security:
operation.setdefault("security", []).extend(operation_security)
if security_definitions:
security_schemes.update(security_definitions)
operation_parameters = _get_openapi_operation_parameters(
dependant=route.dependant,
schema_generator=schema_generator,
model_name_map=model_name_map,
field_mapping=field_mapping,
separate_input_output_schemas=separate_input_output_schemas,
)
parameters.extend(operation_parameters)
if parameters:
all_parameters = {
(param["in"], param["name"]): param for param in parameters
}
required_parameters = {
(param["in"], param["name"]): param
for param in parameters
if param.get("required")
}
# Make sure required definitions of the same parameter take precedence
# over non-required definitions
all_parameters.update(required_parameters)
operation["parameters"] = list(all_parameters.values())
if method in METHODS_WITH_BODY:
request_body_oai = get_openapi_operation_request_body(
body_field=route.body_field,
schema_generator=schema_generator,
model_name_map=model_name_map,
field_mapping=field_mapping,
separate_input_output_schemas=separate_input_output_schemas,
)
if request_body_oai:
operation["requestBody"] = request_body_oai
if route.callbacks:
callbacks = {}
for callback in route.callbacks:
if isinstance(callback, routing.APIRoute):
(
cb_path,
cb_security_schemes,
cb_definitions,
) = get_openapi_path(
route=callback,
operation_ids=operation_ids,
schema_generator=schema_generator,
model_name_map=model_name_map,
field_mapping=field_mapping,
separate_input_output_schemas=separate_input_output_schemas,
)
callbacks[callback.name] = {callback.path: cb_path}
operation["callbacks"] = callbacks
if route.status_code is not None:
status_code = str(route.status_code)
else:
# It would probably make more sense for all response classes to have an
# explicit default status_code, and to extract it from them, instead of
# doing this inspection tricks, that would probably be in the future
# TODO: probably make status_code a default class attribute for all
# responses in Starlette
response_signature = inspect.signature(current_response_class.__init__)
status_code_param = response_signature.parameters.get("status_code")
if status_code_param is not None:
if isinstance(status_code_param.default, int):
status_code = str(status_code_param.default)
operation.setdefault("responses", {}).setdefault(status_code, {})[
"description"
] = route.response_description
if route_response_media_type and is_body_allowed_for_status_code(
route.status_code
):
response_schema = {"type": "string"}
if lenient_issubclass(current_response_class, JSONResponse):
if route.response_field:
response_schema = get_schema_from_model_field(
field=route.response_field,
schema_generator=schema_generator,
model_name_map=model_name_map,
field_mapping=field_mapping,
separate_input_output_schemas=separate_input_output_schemas,
)
else:
response_schema = {}
operation.setdefault("responses", {}).setdefault(
status_code, {}
).setdefault("content", {}).setdefault(route_response_media_type, {})[
"schema"
] = response_schema
if route.responses:
operation_responses = operation.setdefault("responses", {})
for (
additional_status_code,
additional_response,
) in route.responses.items():
process_response = additional_response.copy()
process_response.pop("model", None)
status_code_key = str(additional_status_code).upper()
if status_code_key == "DEFAULT":
status_code_key = "default"
openapi_response = operation_responses.setdefault(
status_code_key, {}
)
assert isinstance(process_response, dict), (
"An additional response must be a dict"
)
field = route.response_fields.get(additional_status_code)
additional_field_schema: Optional[Dict[str, Any]] = None
if field:
additional_field_schema = get_schema_from_model_field(
field=field,
schema_generator=schema_generator,
model_name_map=model_name_map,
field_mapping=field_mapping,
separate_input_output_schemas=separate_input_output_schemas,
)
media_type = route_response_media_type or "application/json"
additional_schema = (
process_response.setdefault("content", {})
.setdefault(media_type, {})
.setdefault("schema", {})
)
deep_dict_update(additional_schema, additional_field_schema)
status_text: Optional[str] = status_code_ranges.get(
str(additional_status_code).upper()
) or http.client.responses.get(int(additional_status_code))
description = (
process_response.get("description")
or openapi_response.get("description")
or status_text
or "Additional Response"
)
deep_dict_update(openapi_response, process_response)
openapi_response["description"] = description
http422 = str(HTTP_422_UNPROCESSABLE_ENTITY)
all_route_params = get_flat_params(route.dependant)
if (all_route_params or route.body_field) and not any(
status in operation["responses"]
for status in [http422, "4XX", "default"]
):
operation["responses"][http422] = {
"description": "Validation Error",
"content": {
"application/json": {
"schema": {"$ref": REF_PREFIX + "HTTPValidationError"}
}
},
}
if "ValidationError" not in definitions:
definitions.update(
{
"ValidationError": validation_error_definition,
"HTTPValidationError": validation_error_response_definition,
}
)
if route.openapi_extra:
deep_dict_update(operation, route.openapi_extra)
path[method.lower()] = operation
return path, security_schemes, definitions
def get_fields_from_routes(
routes: Sequence[BaseRoute],
) -> List[ModelField]:
body_fields_from_routes: List[ModelField] = []
responses_from_routes: List[ModelField] = []
request_fields_from_routes: List[ModelField] = []
callback_flat_models: List[ModelField] = []
for route in routes:
if getattr(route, "include_in_schema", None) and isinstance(
route, routing.APIRoute
):
if route.body_field:
assert isinstance(route.body_field, ModelField), (
"A request body must be a Pydantic Field"
)
body_fields_from_routes.append(route.body_field)
if route.response_field:
responses_from_routes.append(route.response_field)
if route.response_fields:
responses_from_routes.extend(route.response_fields.values())
if route.callbacks:
callback_flat_models.extend(get_fields_from_routes(route.callbacks))
params = get_flat_params(route.dependant)
request_fields_from_routes.extend(params)
flat_models = callback_flat_models + list(
body_fields_from_routes + responses_from_routes + request_fields_from_routes
)
return flat_models
def get_openapi(
*,
title: str,
version: str,
openapi_version: str = "3.1.0",
summary: Optional[str] = None,
description: Optional[str] = None,
routes: Sequence[BaseRoute],
webhooks: Optional[Sequence[BaseRoute]] = None,
tags: Optional[List[Dict[str, Any]]] = None,
servers: Optional[List[Dict[str, Union[str, Any]]]] = None,
terms_of_service: Optional[str] = None,
contact: Optional[Dict[str, Union[str, Any]]] = None,
license_info: Optional[Dict[str, Union[str, Any]]] = None,
separate_input_output_schemas: bool = True,
) -> Dict[str, Any]:
info: Dict[str, Any] = {"title": title, "version": version}
if summary:
info["summary"] = summary
if description:
info["description"] = description
if terms_of_service:
info["termsOfService"] = terms_of_service
if contact:
info["contact"] = contact
if license_info:
info["license"] = license_info
output: Dict[str, Any] = {"openapi": openapi_version, "info": info}
if servers:
output["servers"] = servers
components: Dict[str, Dict[str, Any]] = {}
paths: Dict[str, Dict[str, Any]] = {}
webhook_paths: Dict[str, Dict[str, Any]] = {}
operation_ids: Set[str] = set()
all_fields = get_fields_from_routes(list(routes or []) + list(webhooks or []))
model_name_map = get_compat_model_name_map(all_fields)
schema_generator = GenerateJsonSchema(ref_template=REF_TEMPLATE)
field_mapping, definitions = get_definitions(
fields=all_fields,
schema_generator=schema_generator,
model_name_map=model_name_map,
separate_input_output_schemas=separate_input_output_schemas,
)
for route in routes or []:
if isinstance(route, routing.APIRoute):
result = get_openapi_path(
route=route,
operation_ids=operation_ids,
schema_generator=schema_generator,
model_name_map=model_name_map,
field_mapping=field_mapping,
separate_input_output_schemas=separate_input_output_schemas,
)
if result:
path, security_schemes, path_definitions = result
if path:
paths.setdefault(route.path_format, {}).update(path)
if security_schemes:
components.setdefault("securitySchemes", {}).update(
security_schemes
)
if path_definitions:
definitions.update(path_definitions)
for webhook in webhooks or []:
if isinstance(webhook, routing.APIRoute):
result = get_openapi_path(
route=webhook,
operation_ids=operation_ids,
schema_generator=schema_generator,
model_name_map=model_name_map,
field_mapping=field_mapping,
separate_input_output_schemas=separate_input_output_schemas,
)
if result:
path, security_schemes, path_definitions = result
if path:
webhook_paths.setdefault(webhook.path_format, {}).update(path)
if security_schemes:
components.setdefault("securitySchemes", {}).update(
security_schemes
)
if path_definitions:
definitions.update(path_definitions)
if definitions:
components["schemas"] = {k: definitions[k] for k in sorted(definitions)}
if components:
output["components"] = components
output["paths"] = paths
if webhook_paths:
output["webhooks"] = webhook_paths
if tags:
output["tags"] = tags
return jsonable_encoder(OpenAPI(**output), by_alias=True, exclude_none=True) # type: ignore