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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
##############################################################################
import collections
import logging
import pkg_resources
import time
import paramiko
from yardstick.benchmark import contexts
from yardstick.benchmark.contexts import base as ctx_base
from yardstick.benchmark.contexts import model
from yardstick.common import constants
from yardstick.common import exceptions
from yardstick.common import kubernetes_utils as k8s_utils
from yardstick.common import utils
from yardstick.orchestrator import kubernetes
LOG = logging.getLogger(__name__)
BITS_LENGTH = 2048
class KubernetesContext(ctx_base.Context):
"""Class that handle nodes info"""
__context_type__ = contexts.CONTEXT_KUBERNETES
def __init__(self):
self.ssh_key = ''
self.key_path = ''
self.public_key_path = ''
self.template = None
super(KubernetesContext, self).__init__(host_name_separator='-')
def init(self, attrs):
super(KubernetesContext, self).init(attrs)
networks = attrs.get('networks', {})
self.template = kubernetes.KubernetesTemplate(self.name, attrs)
self.ssh_key = '{}-key'.format(self.name)
self.key_path = self._get_key_path()
self.public_key_path = '{}.pub'.format(self.key_path)
self._networks = collections.OrderedDict(
(net_name, model.Network(net_name, self, network))
for net_name, network in networks.items())
def deploy(self):
LOG.info('Creating ssh key')
self._set_ssh_key()
self._create_crd()
self._create_networks()
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()
self._delete_networks()
self._delete_crd()
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.rc_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 _create_crd(self):
LOG.info('Create Custom Resource Definition elements')
for crd in self.template.crd:
crd.create()
def _delete_crd(self):
LOG.info('Delete Custom Resource Definition elements')
for crd in self.template.crd:
crd.delete()
def _create_networks(self): # pragma: no cover
LOG.info('Create Network elements')
for net in self.template.network_objs:
net.create()
def _delete_networks(self): # pragma: no cover
LOG.info('Create Network elements')
for net in self.template.network_objs:
net.delete()
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)
if not service:
raise exceptions.KubernetesServiceObjectNotDefined()
for sn_port in (sn_port for sn_port in service.ports
if sn_port.port == constants.SSH_PORT):
node_port = sn_port.node_port
break
else:
raise exceptions.KubernetesSSHPortNotDefined()
return {
'name': name,
'ip': self._get_node_ip(),
'private_ip': k8s_utils.get_pod_by_name(name).status.pod_ip,
'ssh_port': node_port,
'user': 'root',
'key_filename': self.key_path,
'interfaces': self._get_interfaces(name)
}
def _get_network(self, net_name):
"""Retrieves the network object, searching by name
:param net_name: (str) replication controller name
:return: (dict) network information (name)
"""
network = self._networks.get(net_name)
if not network:
return
return {'name': net_name}
def _get_interfaces(self, rc_name):
"""Retrieves the network list of a replication controller
:param rc_name: (str) replication controller name
:return: (dict) names and information of the networks used in this
replication controller; those networks must be defined in the
Kubernetes cluster
"""
rc = self.template.get_rc_by_name(rc_name)
if not rc:
return {}
return {name: {'network_name': name,
'local_mac': None,
'local_ip': None}
for name in rc.networks}
def _get_node_ip(self):
return k8s_utils.get_node_list().items[0].status.addresses[0].address
def _get_physical_nodes(self):
return None
def _get_physical_node_for_server(self, server_name):
return None
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