1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this file,
# You can obtain one at http://mozilla.org/MPL/2.0/.
import abc
import errno
import os
import platform
import socket
import threading
import time
import traceback
import urlparse
import mozprocess
__all__ = ["SeleniumServer", "ChromeDriverServer",
"GeckoDriverServer", "WebDriverServer"]
class WebDriverServer(object):
__metaclass__ = abc.ABCMeta
default_base_path = "/"
_used_ports = set()
def __init__(self, logger, binary, host="127.0.0.1", port=None,
base_path="", env=None):
self.logger = logger
self.binary = binary
self.host = host
if base_path == "":
self.base_path = self.default_base_path
else:
self.base_path = base_path
self.env = os.environ.copy() if env is None else env
self._port = port
self._cmd = None
self._proc = None
@abc.abstractmethod
def make_command(self):
"""Returns the full command for starting the server process as a list."""
def start(self, block=True):
try:
self._run(block)
except KeyboardInterrupt:
self.stop()
def _run(self, block):
self._cmd = self.make_command()
self._proc = mozprocess.ProcessHandler(
self._cmd,
processOutputLine=self.on_output,
env=self.env,
storeOutput=False)
try:
self._proc.run()
except OSError as e:
if e.errno == errno.ENOENT:
raise IOError(
"WebDriver HTTP server executable not found: %s" % self.binary)
raise
self.logger.debug(
"Waiting for server to become accessible: %s" % self.url)
try:
wait_for_service((self.host, self.port))
except:
self.logger.error(
"WebDriver HTTP server was not accessible "
"within the timeout:\n%s" % traceback.format_exc())
if self._proc.poll():
self.logger.error("Webdriver server process exited with code %i" %
self._proc.returncode)
raise
if block:
self._proc.wait()
def stop(self):
if self.is_alive:
return self._proc.kill()
return not self.is_alive
@property
def is_alive(self):
return (self._proc is not None and
self._proc.proc is not None and
self._proc.poll() is None)
def on_output(self, line):
self.logger.process_output(self.pid,
line.decode("utf8", "replace"),
command=" ".join(self._cmd))
@property
def pid(self):
if self._proc is not None:
return self._proc.pid
@property
def url(self):
return "http://%s:%i%s" % (self.host, self.port, self.base_path)
@property
def port(self):
if self._port is None:
self._port = self._find_next_free_port()
return self._port
@staticmethod
def _find_next_free_port():
port = get_free_port(4444, exclude=WebDriverServer._used_ports)
WebDriverServer._used_ports.add(port)
return port
class SeleniumServer(WebDriverServer):
default_base_path = "/wd/hub"
def make_command(self):
return ["java", "-jar", self.binary, "-port", str(self.port)]
class ChromeDriverServer(WebDriverServer):
default_base_path = "/wd/hub"
def __init__(self, logger, binary="chromedriver", port=None,
base_path=""):
WebDriverServer.__init__(
self, logger, binary, port=port, base_path=base_path)
def make_command(self):
return [self.binary,
cmd_arg("port", str(self.port)),
cmd_arg("url-base", self.base_path) if self.base_path else ""]
class GeckoDriverServer(WebDriverServer):
def __init__(self, logger, marionette_port=2828, binary="wires",
host="127.0.0.1", port=None):
env = os.environ.copy()
env["RUST_BACKTRACE"] = "1"
WebDriverServer.__init__(self, logger, binary, host=host, port=port, env=env)
self.marionette_port = marionette_port
def make_command(self):
return [self.binary,
"--connect-existing",
"--marionette-port", str(self.marionette_port),
"--host", self.host,
"--port", str(self.port)]
def cmd_arg(name, value=None):
prefix = "-" if platform.system() == "Windows" else "--"
rv = prefix + name
if value is not None:
rv += "=" + value
return rv
def get_free_port(start_port, exclude=None):
"""Get the first port number after start_port (inclusive) that is
not currently bound.
:param start_port: Integer port number at which to start testing.
:param exclude: Set of port numbers to skip"""
port = start_port
while True:
if exclude and port in exclude:
port += 1
continue
s = socket.socket()
try:
s.bind(("127.0.0.1", port))
except socket.error:
port += 1
else:
return port
finally:
s.close()
def wait_for_service(addr, timeout=15):
"""Waits until network service given as a tuple of (host, port) becomes
available or the `timeout` duration is reached, at which point
``socket.error`` is raised."""
end = time.time() + timeout
while end > time.time():
so = socket.socket()
try:
so.connect(addr)
except socket.timeout:
pass
except socket.error as e:
if e[0] != errno.ECONNREFUSED:
raise
else:
return True
finally:
so.close()
time.sleep(0.5)
raise socket.error("Service is unavailable: %s:%i" % addr)
|
