I have a script which runs a subprocess and captures the output, but it only works if I run it in an interactive shell, but not if run from Jenkins.
tst_subscriber = ["timeout", "-s", "KILL", str(timeout),"bash","-c", subsciber_executable]
tst_publisher = ["timeout","-s", "KILL", str(timeout),"bash","-c", publisher_executable]
kill_publisher = lambda process: subprocess.call(['docker-runc', 'delete', pub_name, "-f"])
kill_subscriber = lambda process: subprocess.call(['docker-runc', 'delete', sub_name, "-f"])
test_env = os.environ.copy()
# workaround for buffering problem which causes no captured output for python subprocesses
test_env["PYTHONUNBUFFERED"] = "1"
sub_pro = Popen(tst_subscriber, stdout=subprocess.PIPE, env=test_env)
pub_pro = Popen(tst_publisher, stdout=subprocess.PIPE, env=test_env)
timeout_sub = Timer(timeout, kill_subscriber, [sub_pro])
timeout_pub = Timer(timeout, kill_publisher, [pub_pro])
timeout_sub.start()
timeout_pub.start()
(output, err) = sub_pro.communicate()
print "Subscriber stdout:"
print output
print "Subscriber stderr:"
print err
