def run(self, args):
if self.mgr.is_started():
print "experiment already running"
return
if len(args) != 2:
print "error: {} requires two parameter".format(self.get_keyword())
print self.help_msg()
return
group = args[0]
user_name = args[1]
if not re.search("^[a-zA-Z0-9_]+$", user_name):
logging.info("invalid username used: %s", user_name)
print "error: name must not contain characters other than letters, numbers and _"
return
if not self.mgr.has_group(group):
logging.info("wrong group name used: %s", group)
print "error: group %s not defined" % group
return
## raises exception if group is invalid
tasks = self.mgr.get_tasks_for_group(group)
experiment = Experiment(group, user_name, tasks)
logging.info("starting new experiment for %s, group: %s", user_name,
group)
print "starting new experiment for user: {}, group: {}".format(
user_name, group)
# ensure we have access to the local display
self.exec_cmd("xhost +local:", silent=True)
print
print "starting new editor container..."
# start container as root, we will switch witin the init script
#docker_cmd = "docker run -d"
docker_cmd = "docker create"
docker_cmd += " --name exp_%s_%s" % (group, user_name)
# volume mount for X11 socket, if local X-display is used
docker_cmd += " -v /tmp/.X11-unix:/tmp/.X11-unix"
# ssh forwarded connection require the xauth mechanism
xauth_file = "%s/.Xauthority" % os.environ['HOME']
if os.path.isfile(xauth_file):
docker_cmd += " -v %s:/tmp/.xauth" % xauth_file
docker_cmd += " -e DISPLAY=%s" % os.environ['DISPLAY']
# if we use a X11 display over network (ssh)
docker_cmd += " --net=\"host\""
if self.mgr.devmode:
docker_cmd += " -v %s:/home/user/src" % os.path.abspath(
os.path.join(os.path.dirname(__file__), "../../experiments"))
else:
docker_cmd += " -v /home/user/src"
docker_cmd += " " + EDITOR_CNT_IMAGE
# run the docker_cmd command
out, ret = self.exec_cmd(docker_cmd)
cnt_id = out.strip()
if ret == 0:
logging.debug("got editor container id: %s", cnt_id)
if self.mgr.devmode:
print "id: %s" % cnt_id
# on CentOS, the xauth file has selinux label attached, thus the
# container is not able to read it, therefore, try to copy it into
# the container directly
# Note: this work only for docker > 1.8
if os.path.isfile(xauth_file):
out, ret = self.exec_cmd(
"docker cp %s %s:/home/user/.Xauthority" %
(xauth_file, cnt_id),
silent=True)
out, ret = self.exec_cmd("docker start %s" % cnt_id)
if ret != 0:
logging.error("error starting editor container")
return False
# everything worked as expected, set container id and experiment
experiment.cnt_id = cnt_id
logging.debug("about to start experiment")
self.mgr.start_experiment(experiment)
return True
else:
logging.error("could not start experiment editor container")
print "could not start editor container"
print "maybe you have to choose a different 'user name'"
return False
