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
|
# Copyright 2014 Richard Maw
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# =*= License: GPL-3+ =*=
import asyncore
import collections
import errno
import logging
import os
import socket
import subprocess
import yarnlib
class StepOutputHandler(asyncore.file_dispatcher):
def __init__(self, fd, handle_closed, handle_output, map=None):
asyncore.file_dispatcher.__init__(self, fd=fd, map=map)
self.handle_closed = handle_closed
self.handle_output = handle_output
def handle_read(self):
d = self.read(4096)
if not d:
self.close()
self.handle_closed()
self.handle_output(d)
class StepJob(object):
stdout_closed = False
stderr_closed = False
def __init__(self, step, script, env, scenario_queue, runner,
fd_map, scenarios, failed_scenarios):
self.step = step
self.scenario_queue = scenario_queue
self.runner = runner
self.fd_map = fd_map
self.scenarios = scenarios
self.failed_scenarios = failed_scenarios
self.outbuf = []
self.errbuf = []
self.sp = sp = subprocess.Popen(['sh', '-xeuc', script],
stdin=open(os.devnull, 'r'),
stdout=subprocess.PIPE,
stderr=subprocess.PIPE, env=env,
cwd=runner.srcdir)
StepOutputHandler(fd=sp.stdout, map=fd_map,
handle_output=self.outbuf.append,
handle_closed=self.handle_stdout_closed)
StepOutputHandler(fd=sp.stderr, map=fd_map,
handle_output=self.errbuf.append,
handle_closed=self.handle_stderr_closed)
def handle_stdout_closed(self):
self.stdout_closed = True
if self.stderr_closed:
self.terminate()
def handle_stderr_closed(self):
self.stderr_closed = True
if self.stdout_closed:
self.terminate()
def terminate(self):
exit_code = self.sp.poll()
if exit_code is None:
logging.warning('Step %s closed output before terminating, '
'waiting for it to exit', self.step.text)
exit_code = self.sp.wait()
self.handle_terminated(exit_code, ''.join(self.outbuf),
''.join(self.errbuf))
def handle_terminated(self, exit_code, stdout, stderr):
try:
self.scenario_queue.send((exit_code, stdout, stderr))
except StopIteration:
# end of scenario, queue another
if self.scenarios:
scenario = self.scenarios.pop(0)
s = self.runner.run_scenario(
fd_map=self.fd_map, scenario=scenario,
scenarios=self.scenarios,
failed_scenarios=self.failed_scenarios)
s.next()
s.send(s)
class ScenarioMultiRunner(yarnlib.ScenarioRunner):
def __init__(self, *args, **kwargs):
self.max_jobs = kwargs.pop('max_jobs')
yarnlib.ScenarioRunner.__init__(self, *args, **kwargs)
def run_scenarios(self, scenarios):
jobs_to_run = min(self.max_jobs, len(scenarios))
remaining_scenarios = scenarios[jobs_to_run:]
fd_map = {}
failed_scenarios = []
for scenario in scenarios[:jobs_to_run]:
s = self.run_scenario(fd_map=fd_map,
scenario=scenario,
scenarios=remaining_scenarios,
failed_scenarios=failed_scenarios)
s.next() # need an initial next
s.send(s)
asyncore.loop(map=fd_map)
return failed_scenarios
def run_scenario(self, fd_map, scenario, scenarios, failed_scenarios):
scenario_dir, datadir, homedir, pre_scenario_ud = (
self.setup_scenario(scenario))
assuming, cleanup, normal = self.partition_steps(scenario)
scenario_env = dict(self.env, HOME=homedir, DATADIR=datadir)
ok = True
step_number = 1
scenario_queue = (yield)
# can't delegate common setup here, since it's more code to
# delegate a yield than it's worth without python3's yield from,
# so rather than using the nice for-loops in ScenarioRunner,
# we move the control flow logic to after the step.
queue = collections.deque(assuming + normal + cleanup)
while queue:
step = queue.popleft()
step_env, pre_step_userdata, shell_script = self.setup_step(
step=step, scenario_env=scenario_env,
scenario=scenario, step_number=step_number)
StepJob(step=step, script=shell_script, env=step_env,
runner=self, scenario_queue=scenario_queue,
fd_map=fd_map, scenarios=scenarios,
failed_scenarios=failed_scenarios)
exit, stdout, stderr = (yield)
self.post_step_cb(scenario=scenario, step=step,
step_number=step_number, step_env=step_env,
exit=exit, stdout=stdout, stderr=stderr,
pre_step_userdata=pre_step_userdata)
step_number += 1
if exit != 0:
if step in assuming:
break
elif step in normal:
ok = False
queue = collections.deque(cleanup)
else:
ok = False
break
if not ok:
failed_scenarios.append(scenario)
self.post_scenario_cb(scenario=scenario, datadir=datadir,
homedir=homedir,
pre_scenario_userdata=pre_scenario_ud)
|
