def run_once(self):
self.loginfo("Starting background docker command, timeout %s seconds",
self.config['docker_timeout'])
in_pipe_r, in_pipe_w = os.pipe()
dkrcmd = AsyncDockerCmd(self, 'run', self.sub_stuff['subargs'],
timeout=self.config['docker_timeout'])
dkrcmd.verbose = True
dkrcmd.timeout = 10
# Runs in background
dkrcmd.execute(in_pipe_r)
self.sub_stuff['dkrcmd'] = dkrcmd
wait = self.config['wait_interactive_cmd']
icmd = self.config['interactive_cmd'] + "\n"
# Allow noticable time difference for date command,
# and eat into dkrcmd timeout after receiving signal.
time.sleep(wait)
os.write(in_pipe_w, icmd)
self.loginfo("Waiting up to %d seconds for exit",
dkrcmd.timeout)
# Throw exception if takes > docker_timeout to exit
self.loginfo("Container running, waiting %d seconds to finish.", wait)
self.logdebug("interactive cmds %s", icmd)
time.sleep(wait)
os.close(in_pipe_w)
dkrcmd.wait()
