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#!/usr/bin/env python
#
# grakiss.wanglei@huawei.com
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
#
import os
import utils.dovetail_logger as dt_logger
import utils.dovetail_utils as dt_utils
from utils.dovetail_config import DovetailConfig as dt_cfg
class Container(object):
container_list = {}
has_pull_latest_image = {'yardstick': False, 'functest': False}
logger = None
def __init__(self):
pass
def __str__(self):
pass
@classmethod
def create_log(cls):
cls.logger = dt_logger.Logger(__name__ + '.Container').getLogger()
@classmethod
def get(cls, type):
return cls.container_list[type]
@staticmethod
def get_docker_image(type):
return '%s:%s' % (dt_cfg.dovetail_config[type]['image_name'],
dt_cfg.dovetail_config[type]['docker_tag'])
@classmethod
def create(cls, type):
sshkey = "-v /root/.ssh/id_rsa:/root/.ssh/id_rsa "
dovetail_config = dt_cfg.dovetail_config
docker_image = cls.get_docker_image(type)
envs = dovetail_config[type]['envs']
opts = dovetail_config[type]['opts']
# credentials file openrc.sh is neccessary
dovetail_config['openrc'] = os.path.abspath(dovetail_config['openrc'])
if os.path.isfile(dovetail_config['openrc']):
openrc = ' -v %s:%s ' % (dovetail_config['openrc'],
dovetail_config[type]['openrc'])
else:
cls.logger.error("File %s is not exist", dovetail_config['openrc'])
return None
result_volume = ' -v %s:%s ' % (dovetail_config['result_dir'],
dovetail_config[type]['result']['dir'])
log_volume = ' -v %s:%s ' % (dovetail_config['result_dir'],
dovetail_config[type]['result']['log'])
cmd = 'sudo docker run %s %s %s %s %s %s %s /bin/bash' % \
(opts, envs, sshkey, openrc, result_volume,
log_volume, docker_image)
dt_utils.exec_cmd(cmd, cls.logger)
ret, container_id = \
dt_utils.exec_cmd("sudo docker ps | grep " + docker_image +
" | awk '{print $1}' | head -1", cls.logger)
cls.container_list[type] = container_id
return container_id
@classmethod
def get_image_id(cls, image_name):
cmd = 'sudo docker images -q %s' % (image_name)
ret, image_id = dt_utils.exec_cmd(cmd, cls.logger)
if ret == 0:
return image_id
else:
return False
@classmethod
def remove_image(cls, image_id):
cmd = 'sudo docker rmi %s' % (image_id)
ret, msg = dt_utils.exec_cmd(cmd, cls.logger)
if ret == 0:
cls.logger.debug('remove image %s successfully', image_id)
return True
cls.logger.error('image %s has containers, fail to remove.', image_id)
return False
@classmethod
def pull_image_only(cls, image_name):
cmd = 'sudo docker pull %s' % (image_name)
ret, msg = dt_utils.exec_cmd(cmd, cls.logger)
if ret != 0:
cls.logger.error('fail to pull docker image %s!', image_name)
return False
cls.logger.debug('success to pull docker image %s!', image_name)
return True
# returncode 0: succeed to pull new image and remove the old one
# returncode 1: fail to pull the image
# returncode 2: succeed to pull but fail to get the new image id
# returncode 3: fail to remove the old image
@classmethod
def pull_image(cls, validate_type):
docker_image = cls.get_docker_image(validate_type)
if cls.has_pull_latest_image[validate_type] is True:
cls.logger.debug('%s is already the newest version.', docker_image)
return 0
old_image_id = cls.get_image_id(docker_image)
if not cls.pull_image_only(docker_image):
return 1
cls.has_pull_latest_image[validate_type] = True
new_image_id = cls.get_image_id(docker_image)
if not new_image_id:
cls.logger.error("fail to get the new image's id %s", docker_image)
return 2
if new_image_id == old_image_id:
cls.logger.debug('image %s has no changes, no need to remove.',
docker_image)
else:
if old_image_id:
cls.logger.debug('remove the old image %s', old_image_id)
if not cls.remove_image(old_image_id):
return 3
return 0
@classmethod
def clean(cls, container_id):
cmd1 = 'sudo docker stop %s' % (container_id)
dt_utils.exec_cmd(cmd1, cls.logger)
cmd2 = 'sudo docker rm %s' % (container_id)
dt_utils.exec_cmd(cmd2, cls.logger)
@classmethod
def exec_cmd(cls, container_id, sub_cmd, exit_on_error=False):
if sub_cmd == "":
return (1, 'sub_cmd is empty')
cmd = 'sudo docker exec %s /bin/bash -c "%s"' % (container_id, sub_cmd)
return dt_utils.exec_cmd(cmd, cls.logger, exit_on_error)
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