python-botocore/tests/integration/test_client_http.py
2019-11-18 17:46:14 +09:00

229 lines
7.7 KiB
Python

import select
import socket
import contextlib
import threading
from tests import unittest
from contextlib import contextmanager
import botocore.session
from botocore.config import Config
from botocore.vendored.six.moves import BaseHTTPServer, socketserver
from botocore.exceptions import (
ConnectTimeoutError, ReadTimeoutError, EndpointConnectionError,
ConnectionClosedError,
)
from botocore.vendored.requests import exceptions as requests_exceptions
class TestClientHTTPBehavior(unittest.TestCase):
def setUp(self):
self.port = unused_port()
self.localhost = 'http://localhost:%s/' % self.port
self.session = botocore.session.get_session()
# We need to set fake credentials to ensure credentials aren't searched
# for which might make additional API calls (assume role, etc).
self.session.set_credentials('fakeakid', 'fakesecret')
@unittest.skip('Test has suddenly become extremely flakey.')
def test_can_proxy_https_request_with_auth(self):
proxy_url = 'http://user:pass@localhost:%s/' % self.port
config = Config(proxies={'https': proxy_url}, region_name='us-west-1')
client = self.session.create_client('ec2', config=config)
class AuthProxyHandler(ProxyHandler):
event = threading.Event()
def validate_auth(self):
proxy_auth = self.headers.get('Proxy-Authorization')
return proxy_auth == 'Basic dXNlcjpwYXNz'
try:
with background(run_server, args=(AuthProxyHandler, self.port)):
AuthProxyHandler.event.wait(timeout=60)
client.describe_regions()
except BackgroundTaskFailed:
self.fail('Background task did not exit, proxy was not used.')
def _read_timeout_server(self):
config = Config(
read_timeout=0.1,
retries={'max_attempts': 0},
region_name='us-weast-2',
)
client = self.session.create_client('ec2', endpoint_url=self.localhost,
config=config)
client_call_ended_event = threading.Event()
class FakeEC2(SimpleHandler):
event = threading.Event()
msg = b'<response/>'
def get_length(self):
return len(self.msg)
def get_body(self):
client_call_ended_event.wait(timeout=60)
return self.msg
try:
with background(run_server, args=(FakeEC2, self.port)):
try:
FakeEC2.event.wait(timeout=60)
client.describe_regions()
finally:
client_call_ended_event.set()
except BackgroundTaskFailed:
self.fail('Fake EC2 service was not called.')
def test_read_timeout_exception(self):
with self.assertRaises(ReadTimeoutError):
self._read_timeout_server()
def test_old_read_timeout_exception(self):
with self.assertRaises(requests_exceptions.ReadTimeout):
self._read_timeout_server()
@unittest.skip('The current implementation will fail to timeout on linux')
def test_connect_timeout_exception(self):
config = Config(
connect_timeout=0.2,
retries={'max_attempts': 0},
region_name='us-weast-2',
)
client = self.session.create_client('ec2', endpoint_url=self.localhost,
config=config)
server_bound_event = threading.Event()
client_call_ended_event = threading.Event()
def no_accept_server():
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.bind(('', self.port))
server_bound_event.set()
client_call_ended_event.wait(timeout=60)
sock.close()
with background(no_accept_server):
server_bound_event.wait(timeout=60)
with self.assertRaises(ConnectTimeoutError):
client.describe_regions()
client_call_ended_event.set()
def test_invalid_host_gaierror(self):
config = Config(retries={'max_attempts': 0}, region_name='us-weast-1')
endpoint = 'https://ec2.us-weast-1.amazonaws.com/'
client = self.session.create_client('ec2', endpoint_url=endpoint,
config=config)
with self.assertRaises(EndpointConnectionError):
client.describe_regions()
def test_bad_status_line(self):
config = Config(retries={'max_attempts': 0}, region_name='us-weast-2')
client = self.session.create_client('ec2', endpoint_url=self.localhost,
config=config)
class BadStatusHandler(BaseHTTPServer.BaseHTTPRequestHandler):
event = threading.Event()
def do_POST(self):
self.wfile.write(b'garbage')
with background(run_server, args=(BadStatusHandler, self.port)):
with self.assertRaises(ConnectionClosedError):
BadStatusHandler.event.wait(timeout=60)
client.describe_regions()
def unused_port():
with contextlib.closing(socket.socket()) as sock:
sock.bind(('127.0.0.1', 0))
return sock.getsockname()[1]
class SimpleHandler(BaseHTTPServer.BaseHTTPRequestHandler):
status = 200
def get_length(self):
return 0
def get_body(self):
return b''
def do_GET(self):
length = str(self.get_length())
self.send_response(self.status)
self.send_header('Content-Length', length)
self.end_headers()
self.wfile.write(self.get_body())
do_POST = do_PUT = do_GET
class ProxyHandler(BaseHTTPServer.BaseHTTPRequestHandler):
tunnel_chunk_size = 1024
def _tunnel(self, client, remote):
client.setblocking(0)
remote.setblocking(0)
sockets = [client, remote]
while True:
readable, writeable, _ = select.select(sockets, sockets, [], 1)
if client in readable and remote in writeable:
client_bytes = client.recv(self.tunnel_chunk_size)
if not client_bytes:
break
remote.sendall(client_bytes)
if remote in readable and client in writeable:
remote_bytes = remote.recv(self.tunnel_chunk_size)
if not remote_bytes:
break
client.sendall(remote_bytes)
def do_CONNECT(self):
if not self.validate_auth():
self.send_response(401)
self.end_headers()
return
self.send_response(200)
self.end_headers()
remote_host, remote_port = self.path.split(':')
remote_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
remote_socket.connect((remote_host, int(remote_port)))
self._tunnel(self.request, remote_socket)
remote_socket.close()
def validate_auth(self):
return True
class BackgroundTaskFailed(Exception):
pass
@contextmanager
def background(target, args=(), timeout=60):
thread = threading.Thread(target=target, args=args)
thread.daemon = True
thread.start()
try:
yield target
finally:
thread.join(timeout=timeout)
if thread.is_alive():
msg = 'Background task did not exit in a timely manner.'
raise BackgroundTaskFailed(msg)
def run_server(handler, port):
address = ('', port)
httpd = socketserver.TCPServer(address, handler, bind_and_activate=False)
httpd.allow_reuse_address = True
httpd.server_bind()
httpd.server_activate()
handler.event.set()
httpd.handle_request()
httpd.server_close()