ClickHouse/tests/queries/0_stateless/helpers/httpexpect.py

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# Copyright (c) 2019 Vitaliy Zakaznikov
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import sys
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import http.client
CURDIR = os.path.dirname(os.path.realpath(__file__))
sys.path.insert(0, CURDIR)
import uexpect
from threading import Thread, Event
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from queue import Queue, Empty
class IO(uexpect.IO):
def __init__(self, connection, response, queue, reader):
self.connection = connection
self.response = response
super(IO, self).__init__(None, None, queue, reader)
def write(self, data):
raise NotImplementedError
def close(self, force=True):
self.reader['kill_event'].set()
self.connection.close()
if self._logger:
self._logger.write('\n')
self._logger.flush()
def reader(response, queue, kill_event):
while True:
try:
if kill_event.is_set():
break
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data = response.read(1).decode()
queue.put(data)
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except Exception as e:
if kill_event.is_set():
break
raise
def spawn(connection, request):
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connection = http.client.HTTPConnection(**connection)
connection.request(**request)
response = connection.getresponse()
queue = Queue()
reader_kill_event = Event()
thread = Thread(target=reader, args=(response, queue, reader_kill_event))
thread.daemon = True
thread.start()
return IO(connection, response, queue, reader={'thread':thread, 'kill_event':reader_kill_event})
if __name__ == '__main__':
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with spawn({'host':'localhost','port':8123},{'method':'GET', 'url':'?query=SELECT%201'}) as client:
client.logger(sys.stdout)
client.timeout(2)
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print(client.response.status, client.response.reason)
client.expect('1\n')