mirror of
https://github.com/ansible-collections/community.docker.git
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113 lines
3.7 KiB
Python
113 lines
3.7 KiB
Python
# -*- coding: utf-8 -*-
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# This code is part of the Ansible collection community.docker, but is an independent component.
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# This particular file, and this file only, is based on the Docker SDK for Python (https://github.com/docker/docker-py/)
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#
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# Copyright (c) 2016-2022 Docker, Inc.
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#
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# It is licensed under the Apache 2.0 license (see LICENSES/Apache-2.0.txt in this collection)
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# SPDX-License-Identifier: Apache-2.0
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from __future__ import annotations
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from queue import Empty
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from .. import constants
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from .._import_helper import HTTPAdapter, urllib3, urllib3_connection
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from .basehttpadapter import BaseHTTPAdapter
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from .npipesocket import NpipeSocket
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RecentlyUsedContainer = urllib3._collections.RecentlyUsedContainer
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class NpipeHTTPConnection(urllib3_connection.HTTPConnection, object):
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def __init__(self, npipe_path, timeout=60):
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super(NpipeHTTPConnection, self).__init__("localhost", timeout=timeout)
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self.npipe_path = npipe_path
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self.timeout = timeout
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def connect(self):
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sock = NpipeSocket()
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sock.settimeout(self.timeout)
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sock.connect(self.npipe_path)
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self.sock = sock
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class NpipeHTTPConnectionPool(urllib3.connectionpool.HTTPConnectionPool):
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def __init__(self, npipe_path, timeout=60, maxsize=10):
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super(NpipeHTTPConnectionPool, self).__init__(
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"localhost", timeout=timeout, maxsize=maxsize
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)
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self.npipe_path = npipe_path
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self.timeout = timeout
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def _new_conn(self):
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return NpipeHTTPConnection(self.npipe_path, self.timeout)
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# When re-using connections, urllib3 tries to call select() on our
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# NpipeSocket instance, causing a crash. To circumvent this, we override
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# _get_conn, where that check happens.
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def _get_conn(self, timeout):
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conn = None
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try:
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conn = self.pool.get(block=self.block, timeout=timeout)
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except AttributeError: # self.pool is None
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raise urllib3.exceptions.ClosedPoolError(self, "Pool is closed.")
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except Empty:
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if self.block:
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raise urllib3.exceptions.EmptyPoolError(
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self,
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"Pool reached maximum size and no more connections are allowed.",
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)
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pass # Oh well, we'll create a new connection then
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return conn or self._new_conn()
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class NpipeHTTPAdapter(BaseHTTPAdapter):
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__attrs__ = HTTPAdapter.__attrs__ + [
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"npipe_path",
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"pools",
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"timeout",
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"max_pool_size",
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]
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def __init__(
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self,
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base_url,
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timeout=60,
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pool_connections=constants.DEFAULT_NUM_POOLS,
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max_pool_size=constants.DEFAULT_MAX_POOL_SIZE,
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):
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self.npipe_path = base_url.replace("npipe://", "")
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self.timeout = timeout
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self.max_pool_size = max_pool_size
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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(NpipeHTTPAdapter, 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 = NpipeHTTPConnectionPool(
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self.npipe_path, self.timeout, maxsize=self.max_pool_size
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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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# does not 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-sdk-python/issues/811
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return request.path_url
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