The Gatekeeper, or a project gating system
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#!/usr/bin/env python
# Copyright 2017 Red Hat, Inc.
#
# 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 aiohttp
import asyncio
import logging
import json
import os
import os.path
import socket
import tempfile
import testtools
import threading
import time
import zuul.web
import zuul.lib.log_streamer
import zuul.lib.fingergw
import tests.base
class TestLogStreamer(tests.base.BaseTestCase):
def setUp(self):
super(TestLogStreamer, self).setUp()
self.host = '::'
def startStreamer(self, port, root=None):
if not root:
root = tempfile.gettempdir()
return zuul.lib.log_streamer.LogStreamer(self.host, port, root)
def test_start_stop(self):
streamer = self.startStreamer(0)
self.addCleanup(streamer.stop)
port = streamer.server.socket.getsockname()[1]
s = socket.create_connection((self.host, port))
s.close()
streamer.stop()
with testtools.ExpectedException(ConnectionRefusedError):
s = socket.create_connection((self.host, port))
s.close()
class TestStreaming(tests.base.AnsibleZuulTestCase):
tenant_config_file = 'config/streamer/main.yaml'
log = logging.getLogger("zuul.test_streaming")
def setUp(self):
super(TestStreaming, self).setUp()
self.host = '::'
self.streamer = None
self.stop_streamer = False
self.streaming_data = ''
self.test_streaming_event = threading.Event()
def stopStreamer(self):
self.stop_streamer = True
def startStreamer(self, port, build_uuid, root=None):
if not root:
root = tempfile.gettempdir()
self.streamer = zuul.lib.log_streamer.LogStreamer(self.host,
port, root)
port = self.streamer.server.socket.getsockname()[1]
s = socket.create_connection((self.host, port))
self.addCleanup(s.close)
req = '%s\r\n' % build_uuid
s.sendall(req.encode('utf-8'))
self.test_streaming_event.set()
while not self.stop_streamer:
data = s.recv(2048)
if not data:
break
self.streaming_data += data.decode('utf-8')
s.shutdown(socket.SHUT_RDWR)
s.close()
self.streamer.stop()
def test_streaming(self):
A = self.fake_gerrit.addFakeChange('org/project', 'master', 'A')
self.fake_gerrit.addEvent(A.getPatchsetCreatedEvent(1))
# We don't have any real synchronization for the ansible jobs, so
# just wait until we get our running build.
while not len(self.builds):
time.sleep(0.1)
build = self.builds[0]
self.assertEqual(build.name, 'python27')
build_dir = os.path.join(self.executor_server.jobdir_root, build.uuid)
while not os.path.exists(build_dir):
time.sleep(0.1)
# Need to wait to make sure that jobdir gets set
while build.jobdir is None:
time.sleep(0.1)
build = self.builds[0]
# Wait for the job to begin running and create the ansible log file.
# The job waits to complete until the flag file exists, so we can
# safely access the log here. We only open it (to force a file handle
# to be kept open for it after the job finishes) but wait to read the
# contents until the job is done.
ansible_log = os.path.join(build.jobdir.log_root, 'job-output.txt')
while not os.path.exists(ansible_log):
time.sleep(0.1)
logfile = open(ansible_log, 'r')
self.addCleanup(logfile.close)
# Create a thread to stream the log. We need this to be happening
# before we create the flag file to tell the job to complete.
streamer_thread = threading.Thread(
target=self.startStreamer,
args=(0, build.uuid, self.executor_server.jobdir_root,)
)
streamer_thread.start()
self.addCleanup(self.stopStreamer)
self.test_streaming_event.wait()
# Allow the job to complete, which should close the streaming
# connection (and terminate the thread) as well since the log file
# gets closed/deleted.
flag_file = os.path.join(build_dir, 'test_wait')
open(flag_file, 'w').close()
self.waitUntilSettled()
streamer_thread.join()
# Now that the job is finished, the log file has been closed by the
# job and deleted. However, we still have a file handle to it, so we
# can make sure that we read the entire contents at this point.
# Compact the returned lines into a single string for easy comparison.
file_contents = logfile.read()
logfile.close()
self.log.debug("\n\nFile contents: %s\n\n", file_contents)
self.log.debug("\n\nStreamed: %s\n\n", self.streaming_data)
self.assertEqual(file_contents, self.streaming_data)
def runWSClient(self, build_uuid, event):
async def client(loop, build_uuid, event):
uri = 'http://[::1]:9000/tenant-one/console-stream'
try:
session = aiohttp.ClientSession(loop=loop)
async with session.ws_connect(uri) as ws:
req = {'uuid': build_uuid, 'logfile': None}
ws.send_str(json.dumps(req))
event.set() # notify we are connected and req sent
async for msg in ws:
if msg.type == aiohttp.WSMsgType.TEXT:
self.ws_client_results += msg.data
elif msg.type == aiohttp.WSMsgType.CLOSED:
break
elif msg.type == aiohttp.WSMsgType.ERROR:
break
session.close()
except Exception as e:
self.log.exception("client exception:")
loop = asyncio.new_event_loop()
loop.set_debug(True)
loop.run_until_complete(client(loop, build_uuid, event))
loop.close()
def runFingerClient(self, build_uuid, gateway_address, event):
# Wait until the gateway is started
while True:
try:
# NOTE(Shrews): This causes the gateway to begin to handle
# a request for which it never receives data, and thus
# causes the getCommand() method to timeout (seen in the
# test results, but is harmless).
with socket.create_connection(gateway_address) as s:
break
except ConnectionRefusedError:
time.sleep(0.1)
with socket.create_connection(gateway_address) as s:
msg = "%s\r\n" % build_uuid
s.sendall(msg.encode('utf-8'))
event.set() # notify we are connected and req sent
while True:
data = s.recv(1024)
if not data:
break
self.streaming_data += data.decode('utf-8')
s.shutdown(socket.SHUT_RDWR)
def test_websocket_streaming(self):
# Start the finger streamer daemon
streamer = zuul.lib.log_streamer.LogStreamer(
self.host, 0, self.executor_server.jobdir_root)
self.addCleanup(streamer.stop)
# Need to set the streaming port before submitting the job
finger_port = streamer.server.socket.getsockname()[1]
self.executor_server.log_streaming_port = finger_port
A = self.fake_gerrit.addFakeChange('org/project', 'master', 'A')
self.fake_gerrit.addEvent(A.getPatchsetCreatedEvent(1))
# We don't have any real synchronization for the ansible jobs, so
# just wait until we get our running build.
while not len(self.builds):
time.sleep(0.1)
build = self.builds[0]
self.assertEqual(build.name, 'python27')
build_dir = os.path.join(self.executor_server.jobdir_root, build.uuid)
while not os.path.exists(build_dir):
time.sleep(0.1)
# Need to wait to make sure that jobdir gets set
while build.jobdir is None:
time.sleep(0.1)
build = self.builds[0]
# Wait for the job to begin running and create the ansible log file.
# The job waits to complete until the flag file exists, so we can
# safely access the log here. We only open it (to force a file handle
# to be kept open for it after the job finishes) but wait to read the
# contents until the job is done.
ansible_log = os.path.join(build.jobdir.log_root, 'job-output.txt')
while not os.path.exists(ansible_log):
time.sleep(0.1)
logfile = open(ansible_log, 'r')
self.addCleanup(logfile.close)
# Start the web server
web_server = zuul.web.ZuulWeb(
listen_address='::', listen_port=9000,
gear_server='127.0.0.1', gear_port=self.gearman_server.port)
loop = asyncio.new_event_loop()
loop.set_debug(True)
ws_thread = threading.Thread(target=web_server.run, args=(loop,))
ws_thread.start()
self.addCleanup(loop.close)
self.addCleanup(ws_thread.join)
self.addCleanup(web_server.stop)
# Wait until web server is started
while True:
try:
with socket.create_connection((self.host, 9000)):
break
except ConnectionRefusedError:
time.sleep(0.1)
# Start a thread with the websocket client
ws_client_event = threading.Event()
self.ws_client_results = ''
ws_client_thread = threading.Thread(
target=self.runWSClient, args=(build.uuid, ws_client_event)
)
ws_client_thread.start()
ws_client_event.wait()
# Allow the job to complete
flag_file = os.path.join(build_dir, 'test_wait')
open(flag_file, 'w').close()
# Wait for the websocket client to complete, which it should when
# it's received the full log.
ws_client_thread.join()
self.waitUntilSettled()
file_contents = logfile.read()
logfile.close()
self.log.debug("\n\nFile contents: %s\n\n", file_contents)
self.log.debug("\n\nStreamed: %s\n\n", self.ws_client_results)
self.assertEqual(file_contents, self.ws_client_results)
def test_finger_gateway(self):
# Start the finger streamer daemon
streamer = zuul.lib.log_streamer.LogStreamer(
self.host, 0, self.executor_server.jobdir_root)
self.addCleanup(streamer.stop)
finger_port = streamer.server.socket.getsockname()[1]
# Need to set the streaming port before submitting the job
self.executor_server.log_streaming_port = finger_port
A = self.fake_gerrit.addFakeChange('org/project', 'master', 'A')
self.fake_gerrit.addEvent(A.getPatchsetCreatedEvent(1))
# We don't have any real synchronization for the ansible jobs, so
# just wait until we get our running build.
while not len(self.builds):
time.sleep(0.1)
build = self.builds[0]
self.assertEqual(build.name, 'python27')
build_dir = os.path.join(self.executor_server.jobdir_root, build.uuid)
while not os.path.exists(build_dir):
time.sleep(0.1)
# Need to wait to make sure that jobdir gets set
while build.jobdir is None:
time.sleep(0.1)
build = self.builds[0]
# Wait for the job to begin running and create the ansible log file.
# The job waits to complete until the flag file exists, so we can
# safely access the log here. We only open it (to force a file handle
# to be kept open for it after the job finishes) but wait to read the
# contents until the job is done.
ansible_log = os.path.join(build.jobdir.log_root, 'job-output.txt')
while not os.path.exists(ansible_log):
time.sleep(0.1)
logfile = open(ansible_log, 'r')
self.addCleanup(logfile.close)
# Start the finger gateway daemon
gateway = zuul.lib.fingergw.FingerGateway(
('127.0.0.1', self.gearman_server.port, None, None, None),
(self.host, 0),
user=None,
command_socket=None,
pid_file=None
)
gateway.start()
self.addCleanup(gateway.stop)
gateway_port = gateway.server.socket.getsockname()[1]
gateway_address = (self.host, gateway_port)
# Start a thread with the finger client
finger_client_event = threading.Event()
self.finger_client_results = ''
finger_client_thread = threading.Thread(
target=self.runFingerClient,
args=(build.uuid, gateway_address, finger_client_event)
)
finger_client_thread.start()
finger_client_event.wait()
# Allow the job to complete
flag_file = os.path.join(build_dir, 'test_wait')
open(flag_file, 'w').close()
# Wait for the finger client to complete, which it should when
# it's received the full log.
finger_client_thread.join()
self.waitUntilSettled()
file_contents = logfile.read()
logfile.close()
self.log.debug("\n\nFile contents: %s\n\n", file_contents)
self.log.debug("\n\nStreamed: %s\n\n", self.streaming_data)
self.assertEqual(file_contents, self.streaming_data)