def tail_serial_console(instance_name, zone, start=None, until=None):
next_start = start if start else '0'
while True:
try:
result = gcloud.get_serial_port_output(instance_name,
zone=zone,
start=next_start)
except subprocess.CalledProcessError as e:
if 'Could not fetch serial port output: TIMEOUT' in e.stderr:
gcloud.debug('tail_serial_console: Retrying after TIMEOUT')
continue
gcloud.debug(
'tail_serial_console: Done, because got exception: {}'.format(
e))
if e.stdout:
gcloud.debug('stdout: ' + e.stdout)
if e.stderr:
gcloud.debug('stderr: ' + e.stderr)
break
print_pretty_logs(instance_name, result.stdout)
next_start = re.search(r'--start=(\d*)', result.stderr).group(1)
if until and until in result.stdout:
gcloud.debug(
'tail_serial_console: Done, because found string "{}"'.format(
until))
break
time.sleep(5)
return next_start
def wait_for_instance(instance_name, zone, status):
while True:
result = gcloud.describe_instance(instance_name,
zone=zone,
format='json')
current_status = json.loads(result.stdout)['status']
if current_status == status:
gcloud.debug(
'wait_for_instance: {}/{} arrived at status {}'.format(
zone, instance_name, status))
break
else:
gcloud.debug(
'wait_for_instance: Waiting for {}/{} to go from status {} to status {}'
.format(zone, instance_name, current_status, status))
time.sleep(5)