mirror of https://github.com/docker/docker-py.git
113 lines
3.7 KiB
Python
113 lines
3.7 KiB
Python
import six
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import requests.adapters
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import socket
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from six.moves import http_client as httplib
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from .. import constants
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try:
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import requests.packages.urllib3 as urllib3
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except ImportError:
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import urllib3
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RecentlyUsedContainer = urllib3._collections.RecentlyUsedContainer
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class UnixHTTPResponse(httplib.HTTPResponse, object):
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def __init__(self, sock, *args, **kwargs):
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disable_buffering = kwargs.pop('disable_buffering', False)
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if six.PY2:
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# FIXME: We may need to disable buffering on Py3 as well,
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# but there's no clear way to do it at the moment. See:
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# https://github.com/docker/docker-py/issues/1799
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kwargs['buffering'] = not disable_buffering
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super(UnixHTTPResponse, self).__init__(sock, *args, **kwargs)
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class UnixHTTPConnection(httplib.HTTPConnection, object):
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def __init__(self, base_url, unix_socket, timeout=60):
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super(UnixHTTPConnection, self).__init__(
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'localhost', timeout=timeout
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)
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self.base_url = base_url
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self.unix_socket = unix_socket
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self.timeout = timeout
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self.disable_buffering = False
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def connect(self):
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sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
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sock.settimeout(self.timeout)
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sock.connect(self.unix_socket)
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self.sock = sock
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def putheader(self, header, *values):
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super(UnixHTTPConnection, self).putheader(header, *values)
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if header == 'Connection' and 'Upgrade' in values:
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self.disable_buffering = True
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def response_class(self, sock, *args, **kwargs):
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if self.disable_buffering:
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kwargs['disable_buffering'] = True
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return UnixHTTPResponse(sock, *args, **kwargs)
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class UnixHTTPConnectionPool(urllib3.connectionpool.HTTPConnectionPool):
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def __init__(self, base_url, socket_path, timeout=60, maxsize=10):
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super(UnixHTTPConnectionPool, self).__init__(
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'localhost', timeout=timeout, maxsize=maxsize
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)
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self.base_url = base_url
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self.socket_path = socket_path
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self.timeout = timeout
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def _new_conn(self):
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return UnixHTTPConnection(
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self.base_url, self.socket_path, self.timeout
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)
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class UnixAdapter(requests.adapters.HTTPAdapter):
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__attrs__ = requests.adapters.HTTPAdapter.__attrs__ + ['pools',
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'socket_path',
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'timeout']
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def __init__(self, socket_url, timeout=60,
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pool_connections=constants.DEFAULT_NUM_POOLS):
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socket_path = socket_url.replace('http+unix://', '')
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if not socket_path.startswith('/'):
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socket_path = '/' + socket_path
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self.socket_path = socket_path
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self.timeout = timeout
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self.pools = RecentlyUsedContainer(
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pool_connections, dispose_func=lambda p: p.close()
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)
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super(UnixAdapter, self).__init__()
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def get_connection(self, url, proxies=None):
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with self.pools.lock:
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pool = self.pools.get(url)
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if pool:
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return pool
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pool = UnixHTTPConnectionPool(
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url, self.socket_path, self.timeout
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)
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self.pools[url] = pool
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return pool
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def request_url(self, request, proxies):
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# The select_proxy utility in requests errors out when the provided URL
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# doesn't have a hostname, like is the case when using a UNIX socket.
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# Since proxies are an irrelevant notion in the case of UNIX sockets
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# anyway, we simply return the path URL directly.
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# See also: https://github.com/docker/docker-py/issues/811
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return request.path_url
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def close(self):
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self.pools.clear()
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