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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙimport asyncio import enum import io import json import mimetypes import os import warnings from abc import ABC, abstractmethod from itertools import chain from typing import ( IO, TYPE_CHECKING, Any, ByteString, Dict, Iterable, Optional, TextIO, Tuple, Type, Union, ) from multidict import CIMultiDict from . import hdrs from .abc import AbstractStreamWriter from .helpers import ( PY_36, content_disposition_header, guess_filename, parse_mimetype, sentinel, ) from .streams import StreamReader from .typedefs import Final, JSONEncoder, _CIMultiDict __all__ = ( "PAYLOAD_REGISTRY", "get_payload", "payload_type", "Payload", "BytesPayload", "StringPayload", "IOBasePayload", "BytesIOPayload", "BufferedReaderPayload", "TextIOPayload", "StringIOPayload", "JsonPayload", "AsyncIterablePayload", ) TOO_LARGE_BYTES_BODY: Final[int] = 2**20 # 1 MB if TYPE_CHECKING: # pragma: no cover from typing import List class LookupError(Exception): pass class Order(str, enum.Enum): normal = "normal" try_first = "try_first" try_last = "try_last" def get_payload(data: Any, *args: Any, **kwargs: Any) -> "Payload": return PAYLOAD_REGISTRY.get(data, *args, **kwargs) def register_payload( factory: Type["Payload"], type: Any, *, order: Order = Order.normal ) -> None: PAYLOAD_REGISTRY.register(factory, type, order=order) class payload_type: def __init__(self, type: Any, *, order: Order = Order.normal) -> None: self.type = type self.order = order def __call__(self, factory: Type["Payload"]) -> Type["Payload"]: register_payload(factory, self.type, order=self.order) return factory PayloadType = Type["Payload"] _PayloadRegistryItem = Tuple[PayloadType, Any] class PayloadRegistry: """Payload registry. note: we need zope.interface for more efficient adapter search """ def __init__(self) -> None: self._first: List[_PayloadRegistryItem] = [] self._normal: List[_PayloadRegistryItem] = [] self._last: List[_PayloadRegistryItem] = [] def get( self, data: Any, *args: Any, _CHAIN: "Type[chain[_PayloadRegistryItem]]" = chain, **kwargs: Any, ) -> "Payload": if isinstance(data, Payload): return data for factory, type in _CHAIN(self._first, self._normal, self._last): if isinstance(data, type): return factory(data, *args, **kwargs) raise LookupError() def register( self, factory: PayloadType, type: Any, *, order: Order = Order.normal ) -> None: if order is Order.try_first: self._first.append((factory, type)) elif order is Order.normal: self._normal.append((factory, type)) elif order is Order.try_last: self._last.append((factory, type)) else: raise ValueError(f"Unsupported order {order!r}") class Payload(ABC): _default_content_type: str = "application/octet-stream" _size: Optional[int] = None def __init__( self, value: Any, headers: Optional[ Union[_CIMultiDict, Dict[str, str], Iterable[Tuple[str, str]]] ] = None, content_type: Optional[str] = sentinel, filename: Optional[str] = None, encoding: Optional[str] = None, **kwargs: Any, ) -> None: self._encoding = encoding self._filename = filename self._headers: _CIMultiDict = CIMultiDict() self._value = value if content_type is not sentinel and content_type is not None: self._headers[hdrs.CONTENT_TYPE] = content_type elif self._filename is not None: content_type = mimetypes.guess_type(self._filename)[0] if content_type is None: content_type = self._default_content_type self._headers[hdrs.CONTENT_TYPE] = content_type else: self._headers[hdrs.CONTENT_TYPE] = self._default_content_type self._headers.update(headers or {}) @property def size(self) -> Optional[int]: """Size of the payload.""" return self._size @property def filename(self) -> Optional[str]: """Filename of the payload.""" return self._filename @property def headers(self) -> _CIMultiDict: """Custom item headers""" return self._headers @property def _binary_headers(self) -> bytes: return ( "".join([k + ": " + v + "\r\n" for k, v in self.headers.items()]).encode( "utf-8" ) + b"\r\n" ) @property def encoding(self) -> Optional[str]: """Payload encoding""" return self._encoding @property def content_type(self) -> str: """Content type""" return self._headers[hdrs.CONTENT_TYPE] def set_content_disposition( self, disptype: str, quote_fields: bool = True, _charset: str = "utf-8", **params: Any, ) -> None: """Sets ``Content-Disposition`` header.""" self._headers[hdrs.CONTENT_DISPOSITION] = content_disposition_header( disptype, quote_fields=quote_fields, _charset=_charset, **params ) @abstractmethod async def write(self, writer: AbstractStreamWriter) -> None: """Write payload. writer is an AbstractStreamWriter instance: """ class BytesPayload(Payload): def __init__(self, value: ByteString, *args: Any, **kwargs: Any) -> None: if not isinstance(value, (bytes, bytearray, memoryview)): raise TypeError(f"value argument must be byte-ish, not {type(value)!r}") if "content_type" not in kwargs: kwargs["content_type"] = "application/octet-stream" super().__init__(value, *args, **kwargs) if isinstance(value, memoryview): self._size = value.nbytes else: self._size = len(value) if self._size > TOO_LARGE_BYTES_BODY: if PY_36: kwargs = {"source": self} else: kwargs = {} warnings.warn( "Sending a large body directly with raw bytes might" " lock the event loop. You should probably pass an " "io.BytesIO object instead", ResourceWarning, **kwargs, ) async def write(self, writer: AbstractStreamWriter) -> None: await writer.write(self._value) class StringPayload(BytesPayload): def __init__( self, value: str, *args: Any, encoding: Optional[str] = None, content_type: Optional[str] = None, **kwargs: Any, ) -> None: if encoding is None: if content_type is None: real_encoding = "utf-8" content_type = "text/plain; charset=utf-8" else: mimetype = parse_mimetype(content_type) real_encoding = mimetype.parameters.get("charset", "utf-8") else: if content_type is None: content_type = "text/plain; charset=%s" % encoding real_encoding = encoding super().__init__( value.encode(real_encoding), encoding=real_encoding, content_type=content_type, *args, **kwargs, ) class StringIOPayload(StringPayload): def __init__(self, value: IO[str], *args: Any, **kwargs: Any) -> None: super().__init__(value.read(), *args, **kwargs) class IOBasePayload(Payload): _value: IO[Any] def __init__( self, value: IO[Any], disposition: str = "attachment", *args: Any, **kwargs: Any ) -> None: if "filename" not in kwargs: kwargs["filename"] = guess_filename(value) super().__init__(value, *args, **kwargs) if self._filename is not None and disposition is not None: if hdrs.CONTENT_DISPOSITION not in self.headers: self.set_content_disposition(disposition, filename=self._filename) async def write(self, writer: AbstractStreamWriter) -> None: loop = asyncio.get_event_loop() try: chunk = await loop.run_in_executor(None, self._value.read, 2**16) while chunk: await writer.write(chunk) chunk = await loop.run_in_executor(None, self._value.read, 2**16) finally: await loop.run_in_executor(None, self._value.close) class TextIOPayload(IOBasePayload): _value: TextIO def __init__( self, value: TextIO, *args: Any, encoding: Optional[str] = None, content_type: Optional[str] = None, **kwargs: Any, ) -> None: if encoding is None: if content_type is None: encoding = "utf-8" content_type = "text/plain; charset=utf-8" else: mimetype = parse_mimetype(content_type) encoding = mimetype.parameters.get("charset", "utf-8") else: if content_type is None: content_type = "text/plain; charset=%s" % encoding super().__init__( value, content_type=content_type, encoding=encoding, *args, **kwargs, ) @property def size(self) -> Optional[int]: try: return os.fstat(self._value.fileno()).st_size - self._value.tell() except OSError: return None async def write(self, writer: AbstractStreamWriter) -> None: loop = asyncio.get_event_loop() try: chunk = await loop.run_in_executor(None, self._value.read, 2**16) while chunk: data = ( chunk.encode(encoding=self._encoding) if self._encoding else chunk.encode() ) await writer.write(data) chunk = await loop.run_in_executor(None, self._value.read, 2**16) finally: await loop.run_in_executor(None, self._value.close) class BytesIOPayload(IOBasePayload): @property def size(self) -> int: position = self._value.tell() end = self._value.seek(0, os.SEEK_END) self._value.seek(position) return end - position class BufferedReaderPayload(IOBasePayload): @property def size(self) -> Optional[int]: try: return os.fstat(self._value.fileno()).st_size - self._value.tell() except OSError: # data.fileno() is not supported, e.g. # io.BufferedReader(io.BytesIO(b'data')) return None class JsonPayload(BytesPayload): def __init__( self, value: Any, encoding: str = "utf-8", content_type: str = "application/json", dumps: JSONEncoder = json.dumps, *args: Any, **kwargs: Any, ) -> None: super().__init__( dumps(value).encode(encoding), content_type=content_type, encoding=encoding, *args, **kwargs, ) if TYPE_CHECKING: # pragma: no cover from typing import AsyncIterable, AsyncIterator _AsyncIterator = AsyncIterator[bytes] _AsyncIterable = AsyncIterable[bytes] else: from collections.abc import AsyncIterable, AsyncIterator _AsyncIterator = AsyncIterator _AsyncIterable = AsyncIterable class AsyncIterablePayload(Payload): _iter: Optional[_AsyncIterator] = None def __init__(self, value: _AsyncIterable, *args: Any, **kwargs: Any) -> None: if not isinstance(value, AsyncIterable): raise TypeError( "value argument must support " "collections.abc.AsyncIterablebe interface, " "got {!r}".format(type(value)) ) if "content_type" not in kwargs: kwargs["content_type"] = "application/octet-stream" super().__init__(value, *args, **kwargs) self._iter = value.__aiter__() async def write(self, writer: AbstractStreamWriter) -> None: if self._iter: try: # iter is not None check prevents rare cases # when the case iterable is used twice while True: chunk = await self._iter.__anext__() await writer.write(chunk) except StopAsyncIteration: self._iter = None class StreamReaderPayload(AsyncIterablePayload): def __init__(self, value: StreamReader, *args: Any, **kwargs: Any) -> None: super().__init__(value.iter_any(), *args, **kwargs) PAYLOAD_REGISTRY = PayloadRegistry() PAYLOAD_REGISTRY.register(BytesPayload, (bytes, bytearray, memoryview)) PAYLOAD_REGISTRY.register(StringPayload, str) PAYLOAD_REGISTRY.register(StringIOPayload, io.StringIO) PAYLOAD_REGISTRY.register(TextIOPayload, io.TextIOBase) PAYLOAD_REGISTRY.register(BytesIOPayload, io.BytesIO) PAYLOAD_REGISTRY.register(BufferedReaderPayload, (io.BufferedReader, io.BufferedRandom)) PAYLOAD_REGISTRY.register(IOBasePayload, io.IOBase) PAYLOAD_REGISTRY.register(StreamReaderPayload, StreamReader) # try_last for giving a chance to more specialized async interables like # multidict.BodyPartReaderPayload override the default PAYLOAD_REGISTRY.register(AsyncIterablePayload, AsyncIterable, order=Order.try_last)