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##############################################################################
# Copyright (c) 2017 Huawei Technologies Co.,Ltd.
#
# 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
##############################################################################
from __future__ import absolute_import
import logging
import time
import pkg_resources
import paramiko
from yardstick.benchmark.contexts.base import Context
from yardstick.orchestrator.kubernetes import KubernetesTemplate
from yardstick.common import kubernetes_utils as k8s_utils
from yardstick.common import utils
LOG = logging.getLogger(__name__)
BITS_LENGTH = 2048
class KubernetesContext(Context):
"""Class that handle nodes info"""
__context_type__ = "Kubernetes"
def __init__(self):
self.name = ''
self.ssh_key = ''
self.key_path = ''
self.public_key_path = ''
self.template = None
super(KubernetesContext, self).__init__()
def init(self, attrs):
self.name = attrs.get('name', '')
template_cfg = attrs.get('servers', {})
self.template = KubernetesTemplate(self.name, template_cfg)
self.ssh_key = '{}-key'.format(self.name)
self.key_path = self._get_key_path()
self.public_key_path = '{}.pub'.format(self.key_path)
def deploy(self):
LOG.info('Creating ssh key')
self._set_ssh_key()
LOG.info('Launch containers')
self._create_rcs()
self._create_services()
time.sleep(1)
self.template.get_rc_pods()
self._wait_until_running()
def undeploy(self):
self._delete_ssh_key()
self._delete_rcs()
self._delete_pods()
self._delete_services()
super(KubernetesContext, self).undeploy()
def _wait_until_running(self):
while not all(self._check_pod_status(p) for p in self.template.pods):
time.sleep(1)
def _check_pod_status(self, pod):
status = k8s_utils.read_pod_status(pod)
LOG.debug('%s:%s', pod, status)
if status == 'Failed':
LOG.error('Pod %s status is failed', pod)
raise RuntimeError
if status != 'Running':
return False
return True
def _create_services(self):
for obj in self.template.service_objs:
obj.create()
def _delete_services(self):
for obj in self.template.service_objs:
obj.delete()
def _create_rcs(self):
for obj in self.template.k8s_objs:
self._create_rc(obj.get_template())
def _create_rc(self, template):
k8s_utils.create_replication_controller(template)
def _delete_rcs(self):
for rc in self.template.rcs:
self._delete_rc(rc)
def _delete_rc(self, rc):
k8s_utils.delete_replication_controller(rc)
def _delete_pods(self):
for pod in self.template.pods:
self._delete_pod(pod)
def _delete_pod(self, pod):
k8s_utils.delete_pod(pod)
def _get_key_path(self):
task_id = self.name.split('-')[-1]
k = 'files/yardstick_key-{}'.format(task_id)
return pkg_resources.resource_filename('yardstick.resources', k)
def _set_ssh_key(self):
rsa_key = paramiko.RSAKey.generate(bits=BITS_LENGTH)
LOG.info('Writing private key')
rsa_key.write_private_key_file(self.key_path)
LOG.info('Writing public key')
key = '{} {}\n'.format(rsa_key.get_name(), rsa_key.get_base64())
with open(self.public_key_path, 'w') as f:
f.write(key)
LOG.info('Create configmap for ssh key')
k8s_utils.create_config_map(self.ssh_key, {'authorized_keys': key})
def _delete_ssh_key(self):
k8s_utils.delete_config_map(self.ssh_key)
utils.remove_file(self.key_path)
utils.remove_file(self.public_key_path)
def _get_server(self, name):
service_name = '{}-service'.format(name)
service = k8s_utils.get_service_by_name(service_name).ports[0]
host = {
'name': service.name,
'ip': self._get_node_ip(),
'private_ip': k8s_utils.get_pod_by_name(name).status.pod_ip,
'ssh_port': service.node_port,
'user': 'root',
'key_filename': self.key_path,
}
return host
def _get_node_ip(self):
return k8s_utils.get_node_list().items[0].status.addresses[0].address
def _get_network(self, attr_name):
return None
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