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backend/venv/Lib/site-packages/kombu/asynchronous/http/__init__.py

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+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+from kombu.asynchronous import get_event_loop
+from kombu.asynchronous.http.base import Headers, Request, Response
+from kombu.asynchronous.hub import Hub
+
+if TYPE_CHECKING:
+    from kombu.asynchronous.http.curl import CurlClient
+
+__all__ = ('Client', 'Headers', 'Response', 'Request')
+
+
+def Client(hub: Hub | None = None, **kwargs: int) -> CurlClient:
+    """Create new HTTP client."""
+    from .curl import CurlClient
+    return CurlClient(hub, **kwargs)
+
+
+def get_client(hub: Hub | None = None, **kwargs: int) -> CurlClient:
+    """Get or create HTTP client bound to the current event loop."""
+    hub = hub or get_event_loop()
+    try:
+        return hub._current_http_client
+    except AttributeError:
+        client = hub._current_http_client = Client(hub, **kwargs)
+        return client

backend/venv/Lib/site-packages/kombu/asynchronous/http/base.py

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+"""Base async HTTP client implementation."""
+
+from __future__ import annotations
+
+import sys
+from http.client import responses
+from typing import TYPE_CHECKING
+
+from vine import Thenable, maybe_promise, promise
+
+from kombu.exceptions import HttpError
+from kombu.utils.compat import coro
+from kombu.utils.encoding import bytes_to_str
+from kombu.utils.functional import maybe_list, memoize
+
+if TYPE_CHECKING:
+    from types import TracebackType
+
+__all__ = ('Headers', 'Response', 'Request')
+
+PYPY = hasattr(sys, 'pypy_version_info')
+
+
+@memoize(maxsize=1000)
+def normalize_header(key):
+    return '-'.join(p.capitalize() for p in key.split('-'))
+
+
+class Headers(dict):
+    """Represents a mapping of HTTP headers."""
+
+    # TODO: This is just a regular dict and will not perform normalization
+    # when looking up keys etc.
+
+    #: Set when all of the headers have been read.
+    complete = False
+
+    #: Internal attribute used to keep track of continuation lines.
+    _prev_key = None
+
+
+@Thenable.register
+class Request:
+    """A HTTP Request.
+
+    Arguments:
+    ---------
+        url (str): The URL to request.
+        method (str): The HTTP method to use (defaults to ``GET``).
+
+    Keyword Arguments:
+    -----------------
+        headers (Dict, ~kombu.asynchronous.http.Headers): Optional headers for
+            this request
+        body (str): Optional body for this request.
+        connect_timeout (float): Connection timeout in float seconds
+            Default is 30.0.
+        timeout (float): Time in float seconds before the request times out
+            Default is 30.0.
+        follow_redirects (bool): Specify if the client should follow redirects
+            Enabled by default.
+        max_redirects (int): Maximum number of redirects (default 6).
+        use_gzip (bool): Allow the server to use gzip compression.
+            Enabled by default.
+        validate_cert (bool): Set to true if the server certificate should be
+            verified when performing ``https://`` requests.
+            Enabled by default.
+        auth_username (str): Username for HTTP authentication.
+        auth_password (str): Password for HTTP authentication.
+        auth_mode (str): Type of HTTP authentication (``basic`` or ``digest``).
+        user_agent (str): Custom user agent for this request.
+        network_interface (str): Network interface to use for this request.
+        on_ready (Callable): Callback to be called when the response has been
+            received. Must accept single ``response`` argument.
+        on_stream (Callable): Optional callback to be called every time body
+            content has been read from the socket.  If specified then the
+            response body and buffer attributes will not be available.
+        on_timeout (callable): Optional callback to be called if the request
+            times out.
+        on_header (Callable): Optional callback to be called for every header
+            line received from the server.  The signature
+            is ``(headers, line)`` and note that if you want
+            ``response.headers`` to be populated then your callback needs to
+            also call ``client.on_header(headers, line)``.
+        on_prepare (Callable): Optional callback that is implementation
+            specific (e.g. curl client will pass the ``curl`` instance to
+            this callback).
+        proxy_host (str): Optional proxy host.  Note that a ``proxy_port`` must
+            also be provided or a :exc:`ValueError` will be raised.
+        proxy_username (str): Optional username to use when logging in
+            to the proxy.
+        proxy_password (str): Optional password to use when authenticating
+            with the proxy server.
+        ca_certs (str): Custom CA certificates file to use.
+        client_key (str): Optional filename for client SSL key.
+        client_cert (str): Optional filename for client SSL certificate.
+    """
+
+    body = user_agent = network_interface = \
+        auth_username = auth_password = auth_mode = \
+        proxy_host = proxy_port = proxy_username = proxy_password = \
+        ca_certs = client_key = client_cert = None
+
+    connect_timeout = 30.0
+    request_timeout = 30.0
+    follow_redirects = True
+    max_redirects = 6
+    use_gzip = True
+    validate_cert = True
+
+    if not PYPY:  # pragma: no cover
+        __slots__ = ('url', 'method', 'on_ready', 'on_timeout', 'on_stream',
+                     'on_prepare', 'on_header', 'headers',
+                     '__weakref__', '__dict__')
+
+    def __init__(self, url, method='GET', on_ready=None, on_timeout=None,
+                 on_stream=None, on_prepare=None, on_header=None,
+                 headers=None, **kwargs):
+        self.url = url
+        self.method = method or self.method
+        self.on_ready = maybe_promise(on_ready) or promise()
+        self.on_timeout = maybe_promise(on_timeout)
+        self.on_stream = maybe_promise(on_stream)
+        self.on_prepare = maybe_promise(on_prepare)
+        self.on_header = maybe_promise(on_header)
+        if kwargs:
+            for k, v in kwargs.items():
+                setattr(self, k, v)
+        if not isinstance(headers, Headers):
+            headers = Headers(headers or {})
+        self.headers = headers
+
+    def then(self, callback, errback=None):
+        self.on_ready.then(callback, errback)
+
+    def __repr__(self):
+        return '<Request: {0.method} {0.url} {0.body}>'.format(self)
+
+
+class Response:
+    """HTTP Response.
+
+    Arguments
+    ---------
+        request (~kombu.asynchronous.http.Request): See :attr:`request`.
+        code (int): See :attr:`code`.
+        headers (~kombu.asynchronous.http.Headers): See :attr:`headers`.
+        buffer (bytes): See :attr:`buffer`
+        effective_url (str): See :attr:`effective_url`.
+        status (str): See :attr:`status`.
+
+    Attributes
+    ----------
+        request (~kombu.asynchronous.http.Request): object used to
+            get this response.
+        code (int): HTTP response code (e.g. 200, 404, or 500).
+        headers (~kombu.asynchronous.http.Headers): HTTP headers
+            for this response.
+        buffer (bytes): Socket read buffer.
+        effective_url (str): The destination url for this request after
+            following redirects.
+        error (Exception): Error instance if the request resulted in
+            a HTTP error code.
+        status (str): Human equivalent of :attr:`code`,
+            e.g. ``OK``, `Not found`, or 'Internal Server Error'.
+    """
+
+    if not PYPY:  # pragma: no cover
+        __slots__ = ('request', 'code', 'headers', 'buffer', 'effective_url',
+                     'error', 'status', '_body', '__weakref__')
+
+    def __init__(self, request, code, headers=None, buffer=None,
+                 effective_url=None, error=None, status=None):
+        self.request = request
+        self.code = code
+        self.headers = headers if headers is not None else Headers()
+        self.buffer = buffer
+        self.effective_url = effective_url or request.url
+        self._body = None
+
+        self.status = status or responses.get(self.code, 'Unknown')
+        self.error = error
+        if self.error is None and (self.code < 200 or self.code > 299):
+            self.error = HttpError(self.code, self.status, self)
+
+    def raise_for_error(self):
+        """Raise if the request resulted in an HTTP error code.
+
+        Raises
+        ------
+            :class:`~kombu.exceptions.HttpError`
+        """
+        if self.error:
+            raise self.error
+
+    @property
+    def body(self):
+        """The full contents of the response body.
+
+        Note:
+        ----
+            Accessing this property will evaluate the buffer
+            and subsequent accesses will be cached.
+        """
+        if self._body is None:
+            if self.buffer is not None:
+                self._body = self.buffer.getvalue()
+        return self._body
+
+    # these are for compatibility with Requests
+    @property
+    def status_code(self):
+        return self.code
+
+    @property
+    def content(self):
+        return self.body
+
+
+@coro
+def header_parser(keyt=normalize_header):
+    while 1:
+        (line, headers) = yield
+        if line.startswith('HTTP/'):
+            continue
+        elif not line:
+            headers.complete = True
+            continue
+        elif line[0].isspace():
+            pkey = headers._prev_key
+            headers[pkey] = ' '.join([headers.get(pkey) or '', line.lstrip()])
+        else:
+            key, value = line.split(':', 1)
+            key = headers._prev_key = keyt(key)
+            headers[key] = value.strip()
+
+
+class BaseClient:
+    Headers = Headers
+    Request = Request
+    Response = Response
+
+    def __init__(self, hub, **kwargs):
+        self.hub = hub
+        self._header_parser = header_parser()
+
+    def perform(self, request, **kwargs):
+        for req in maybe_list(request) or []:
+            if not isinstance(req, self.Request):
+                req = self.Request(req, **kwargs)
+            self.add_request(req)
+
+    def add_request(self, request):
+        raise NotImplementedError('must implement add_request')
+
+    def close(self):
+        pass
+
+    def on_header(self, headers, line):
+        try:
+            self._header_parser.send((bytes_to_str(line), headers))
+        except StopIteration:
+            self._header_parser = header_parser()
+
+    def __enter__(self):
+        return self
+
+    def __exit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType | None
+    ) -> None:
+        self.close()

backend/venv/Lib/site-packages/kombu/asynchronous/http/curl.py

@@ -0,0 +1,293 @@
+"""HTTP Client using pyCurl."""
+
+from __future__ import annotations
+
+from collections import deque
+from functools import partial
+from io import BytesIO
+from time import time
+
+from kombu.asynchronous.hub import READ, WRITE, Hub, get_event_loop
+from kombu.exceptions import HttpError
+from kombu.utils.encoding import bytes_to_str
+
+from .base import BaseClient
+
+try:
+    import pycurl
+except ImportError:  # pragma: no cover
+    pycurl = Curl = METH_TO_CURL = None
+else:
+    from pycurl import Curl
+
+    METH_TO_CURL = {
+        'GET': pycurl.HTTPGET,
+        'POST': pycurl.POST,
+        'PUT': pycurl.UPLOAD,
+        'HEAD': pycurl.NOBODY,
+    }
+
+__all__ = ('CurlClient',)
+
+DEFAULT_USER_AGENT = 'Mozilla/5.0 (compatible; pycurl)'
+EXTRA_METHODS = frozenset(['DELETE', 'OPTIONS', 'PATCH'])
+
+
+class CurlClient(BaseClient):
+    """Curl HTTP Client."""
+
+    Curl = Curl
+
+    def __init__(self, hub: Hub | None = None, max_clients: int = 10):
+        if pycurl is None:
+            raise ImportError('The curl client requires the pycurl library.')
+        hub = hub or get_event_loop()
+        super().__init__(hub)
+        self.max_clients = max_clients
+
+        self._multi = pycurl.CurlMulti()
+        self._multi.setopt(pycurl.M_TIMERFUNCTION, self._set_timeout)
+        self._multi.setopt(pycurl.M_SOCKETFUNCTION, self._handle_socket)
+        self._curls = [self.Curl() for i in range(max_clients)]
+        self._free_list = self._curls[:]
+        self._pending = deque()
+        self._fds = {}
+
+        self._socket_action = self._multi.socket_action
+        self._timeout_check_tref = self.hub.call_repeatedly(
+            1.0, self._timeout_check,
+        )
+
+        # pycurl 7.29.0 workaround
+        dummy_curl_handle = pycurl.Curl()
+        self._multi.add_handle(dummy_curl_handle)
+        self._multi.remove_handle(dummy_curl_handle)
+
+    def close(self):
+        self._timeout_check_tref.cancel()
+        for _curl in self._curls:
+            _curl.close()
+        self._multi.close()
+
+    def add_request(self, request):
+        self._pending.append(request)
+        self._process_queue()
+        self._set_timeout(0)
+        return request
+
+    # the next two methods are used for linux/epoll workaround:
+    # we temporarily remove all curl fds from hub, so curl cannot
+    # close a fd which is still inside epoll
+    def _pop_from_hub(self):
+        for fd in self._fds:
+            self.hub.remove(fd)
+
+    def _push_to_hub(self):
+        for fd, events in self._fds.items():
+            if events & READ:
+                self.hub.add_reader(fd, self.on_readable, fd)
+            if events & WRITE:
+                self.hub.add_writer(fd, self.on_writable, fd)
+
+    def _handle_socket(self, event, fd, multi, data, _pycurl=pycurl):
+        if event == _pycurl.POLL_REMOVE:
+            if fd in self._fds:
+                self._fds.pop(fd, None)
+        else:
+            if event == _pycurl.POLL_IN:
+                self._fds[fd] = READ
+            elif event == _pycurl.POLL_OUT:
+                self._fds[fd] = WRITE
+            elif event == _pycurl.POLL_INOUT:
+                self._fds[fd] = READ | WRITE
+
+    def _set_timeout(self, msecs):
+        self.hub.call_later(msecs, self._timeout_check)
+
+    def _timeout_check(self, _pycurl=pycurl):
+        self._pop_from_hub()
+        try:
+            while 1:
+                try:
+                    ret, _ = self._multi.socket_all()
+                except pycurl.error as exc:
+                    ret = exc.args[0]
+                if ret != _pycurl.E_CALL_MULTI_PERFORM:
+                    break
+        finally:
+            self._push_to_hub()
+        self._process_pending_requests()
+
+    def on_readable(self, fd, _pycurl=pycurl):
+        return self._on_event(fd, _pycurl.CSELECT_IN)
+
+    def on_writable(self, fd, _pycurl=pycurl):
+        return self._on_event(fd, _pycurl.CSELECT_OUT)
+
+    def _on_event(self, fd, event, _pycurl=pycurl):
+        self._pop_from_hub()
+        try:
+            while 1:
+                try:
+                    ret, _ = self._socket_action(fd, event)
+                except pycurl.error as exc:
+                    ret = exc.args[0]
+                if ret != _pycurl.E_CALL_MULTI_PERFORM:
+                    break
+        finally:
+            self._push_to_hub()
+        self._process_pending_requests()
+
+    def _process_pending_requests(self):
+        while 1:
+            q, succeeded, failed = self._multi.info_read()
+            for curl in succeeded:
+                self._process(curl)
+            for curl, errno, reason in failed:
+                self._process(curl, errno, reason)
+            if q == 0:
+                break
+        self._process_queue()
+
+    def _process_queue(self):
+        while 1:
+            started = 0
+            while self._free_list and self._pending:
+                started += 1
+                curl = self._free_list.pop()
+                request = self._pending.popleft()
+                headers = self.Headers()
+                buf = BytesIO()
+                curl.info = {
+                    'headers': headers,
+                    'buffer': buf,
+                    'request': request,
+                    'curl_start_time': time(),
+                }
+                self._setup_request(curl, request, buf, headers)
+                self._multi.add_handle(curl)
+            if not started:
+                break
+
+    def _process(self, curl, errno=None, reason=None, _pycurl=pycurl):
+        info, curl.info = curl.info, None
+        self._multi.remove_handle(curl)
+        self._free_list.append(curl)
+        buffer = info['buffer']
+        if errno:
+            code = 599
+            error = HttpError(code, reason)
+            error.errno = errno
+            effective_url = None
+            buffer.close()
+            buffer = None
+        else:
+            error = None
+            code = curl.getinfo(_pycurl.HTTP_CODE)
+            effective_url = curl.getinfo(_pycurl.EFFECTIVE_URL)
+            buffer.seek(0)
+        # try:
+        request = info['request']
+        request.on_ready(self.Response(
+            request=request, code=code, headers=info['headers'],
+            buffer=buffer, effective_url=effective_url, error=error,
+        ))
+
+    def _setup_request(self, curl, request, buffer, headers, _pycurl=pycurl):
+        setopt = curl.setopt
+        setopt(_pycurl.URL, bytes_to_str(request.url))
+
+        # see tornado curl client
+        request.headers.setdefault('Expect', '')
+        request.headers.setdefault('Pragma', '')
+
+        setopt(
+            _pycurl.HTTPHEADER,
+            ['{}: {}'.format(*h) for h in request.headers.items()],
+        )
+
+        setopt(
+            _pycurl.HEADERFUNCTION,
+            partial(request.on_header or self.on_header, request.headers),
+        )
+        setopt(
+            _pycurl.WRITEFUNCTION, request.on_stream or buffer.write,
+        )
+        setopt(
+            _pycurl.FOLLOWLOCATION, request.follow_redirects,
+        )
+        setopt(
+            _pycurl.USERAGENT,
+            bytes_to_str(request.user_agent or DEFAULT_USER_AGENT),
+        )
+        if request.network_interface:
+            setopt(_pycurl.INTERFACE, request.network_interface)
+        setopt(
+            _pycurl.ENCODING, 'gzip,deflate' if request.use_gzip else 'none',
+        )
+        if request.proxy_host:
+            if not request.proxy_port:
+                raise ValueError('Request with proxy_host but no proxy_port')
+            setopt(_pycurl.PROXY, request.proxy_host)
+            setopt(_pycurl.PROXYPORT, request.proxy_port)
+            if request.proxy_username:
+                setopt(_pycurl.PROXYUSERPWD, '{}:{}'.format(
+                    request.proxy_username, request.proxy_password or ''))
+
+        setopt(_pycurl.SSL_VERIFYPEER, 1 if request.validate_cert else 0)
+        setopt(_pycurl.SSL_VERIFYHOST, 2 if request.validate_cert else 0)
+        if request.ca_certs is not None:
+            setopt(_pycurl.CAINFO, request.ca_certs)
+
+        setopt(_pycurl.IPRESOLVE, pycurl.IPRESOLVE_WHATEVER)
+
+        for meth in METH_TO_CURL.values():
+            setopt(meth, False)
+        try:
+            meth = METH_TO_CURL[request.method]
+        except KeyError:
+            curl.setopt(_pycurl.CUSTOMREQUEST, request.method)
+        else:
+            curl.unsetopt(_pycurl.CUSTOMREQUEST)
+            setopt(meth, True)
+
+        if request.method in ('POST', 'PUT'):
+            if not request.body:
+                body = b''
+            else:
+                body = request.body if isinstance(request.body, bytes) else request.body.encode('utf-8')
+
+            reqbuffer = BytesIO(body)
+            setopt(_pycurl.READFUNCTION, reqbuffer.read)
+            if request.method == 'POST':
+
+                def ioctl(cmd):
+                    if cmd == _pycurl.IOCMD_RESTARTREAD:
+                        reqbuffer.seek(0)
+                setopt(_pycurl.IOCTLFUNCTION, ioctl)
+                setopt(_pycurl.POSTFIELDSIZE, len(body))
+            else:
+                setopt(_pycurl.INFILESIZE, len(body))
+        elif request.method == 'GET':
+            assert not request.body
+
+        if request.auth_username is not None:
+            auth_mode = {
+                'basic': _pycurl.HTTPAUTH_BASIC,
+                'digest': _pycurl.HTTPAUTH_DIGEST
+            }[request.auth_mode or 'basic']
+            setopt(_pycurl.HTTPAUTH, auth_mode)
+            userpwd = '{}:{}'.format(
+                request.auth_username, request.auth_password or '',
+            )
+            setopt(_pycurl.USERPWD, userpwd)
+        else:
+            curl.unsetopt(_pycurl.USERPWD)
+
+        if request.client_cert is not None:
+            setopt(_pycurl.SSLCERT, request.client_cert)
+        if request.client_key is not None:
+            setopt(_pycurl.SSLKEY, request.client_key)
+
+        if request.on_prepare is not None:
+            request.on_prepare(curl)