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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 copy
from yardstick.common import exceptions
from yardstick.common import utils
from yardstick.common import kubernetes_utils as k8s_utils
class ContainerObject(object):
SSH_MOUNT_PATH = '/tmp/.ssh/'
IMAGE_DEFAULT = 'openretriever/yardstick'
COMMAND_DEFAULT = '/bin/bash'
def __init__(self, name, ssh_key, **kwargs):
self._name = name
self._ssh_key = ssh_key
self._image = kwargs.get('image', self.IMAGE_DEFAULT)
self._command = [kwargs.get('command', self.COMMAND_DEFAULT)]
self._args = kwargs.get('args', [])
self._volume_mounts = kwargs.get('volumeMounts', [])
def _create_volume_mounts(self):
"""Return all "volumeMounts" items per container"""
volume_mounts_items = [self._create_volume_mounts_item(vol)
for vol in self._volume_mounts]
ssh_vol = {'name': self._ssh_key,
'mountPath': self.SSH_MOUNT_PATH}
volume_mounts_items.append(self._create_volume_mounts_item(ssh_vol))
return volume_mounts_items
@staticmethod
def _create_volume_mounts_item(volume_mount):
"""Create a "volumeMounts" item"""
return {'name': volume_mount['name'],
'mountPath': volume_mount['mountPath'],
'readOnly': volume_mount.get('readOnly', False)}
def get_container_item(self):
"""Create a "container" item"""
container_name = '{}-container'.format(self._name)
return {'args': self._args,
'command': self._command,
'image': self._image,
'name': container_name,
'volumeMounts': self._create_volume_mounts()}
class KubernetesObject(object):
SSHKEY_DEFAULT = 'yardstick_key'
def __init__(self, name, **kwargs):
super(KubernetesObject, self).__init__()
parameters = copy.deepcopy(kwargs)
self.name = name
self.node_selector = parameters.pop('nodeSelector', {})
self.ssh_key = parameters.pop('ssh_key', self.SSHKEY_DEFAULT)
self._volumes = parameters.pop('volumes', [])
containers = parameters.pop('containers', None)
if containers:
self._containers = [
ContainerObject(self.name, self.ssh_key, **container)
for container in containers]
else:
self._containers = [
ContainerObject(self.name, self.ssh_key, **parameters)]
self.template = {
"apiVersion": "v1",
"kind": "ReplicationController",
"metadata": {
"name": ""
},
"spec": {
"replicas": 1,
"template": {
"metadata": {
"labels": {
"app": name
}
},
"spec": {
"containers": [],
"volumes": [],
"nodeSelector": {}
}
}
}
}
self._change_value_according_name(name)
self._add_containers()
self._add_node_selector()
self._add_volumes()
def get_template(self):
return self.template
def _change_value_according_name(self, name):
utils.set_dict_value(self.template, 'metadata.name', name)
utils.set_dict_value(self.template,
'spec.template.metadata.labels.app',
name)
def _add_containers(self):
containers = [container.get_container_item()
for container in self._containers]
utils.set_dict_value(self.template,
'spec.template.spec.containers',
containers)
def _add_node_selector(self):
utils.set_dict_value(self.template,
'spec.template.spec.nodeSelector',
self.node_selector)
def _add_volumes(self):
"""Add "volume" items to container specs, including the SSH one"""
volume_items = [self._create_volume_item(vol) for vol in self._volumes]
volume_items.append(self._create_ssh_key_volume())
utils.set_dict_value(self.template,
'spec.template.spec.volumes',
volume_items)
def _create_ssh_key_volume(self):
"""Create a "volume" item of type "configMap" for the SSH key"""
return {'name': self.ssh_key,
'configMap': {'name': self.ssh_key}}
@staticmethod
def _create_volume_item(volume):
"""Create a "volume" item"""
volume = copy.deepcopy(volume)
name = volume.pop('name')
for key in (k for k in volume if k in k8s_utils.get_volume_types()):
type_name = key
type_data = volume[key]
break
else:
raise exceptions.KubernetesTemplateInvalidVolumeType(volume=volume)
return {'name': name,
type_name: type_data}
class ServiceObject(object):
def __init__(self, name):
self.name = '{}-service'.format(name)
self.template = {
'metadata': {
'name': '{}-service'.format(name)
},
'spec': {
'type': 'NodePort',
'ports': [
{
'port': 22,
'protocol': 'TCP'
}
],
'selector': {
'app': name
}
}
}
def create(self):
k8s_utils.create_service(self.template)
def delete(self):
k8s_utils.delete_service(self.name)
class KubernetesTemplate(object):
def __init__(self, name, context_cfg):
"""KubernetesTemplate object initialization
:param name: (str) name of the Kubernetes context
:param context_cfg: (dict) context definition
"""
context_cfg = copy.deepcopy(context_cfg)
servers_cfg = context_cfg.pop('servers', {})
self.name = name
self.ssh_key = '{}-key'.format(name)
self.rcs = [self._get_rc_name(rc) for rc in servers_cfg]
self.k8s_objs = [KubernetesObject(self._get_rc_name(rc),
ssh_key=self.ssh_key,
**cfg)
for rc, cfg in servers_cfg.items()]
self.service_objs = [ServiceObject(s) for s in self.rcs]
self.pods = []
def _get_rc_name(self, rc_name):
return '{}-{}'.format(rc_name, self.name)
def get_rc_pods(self):
resp = k8s_utils.get_pod_list()
self.pods = [p.metadata.name for p in resp.items for s in self.rcs
if p.metadata.name.startswith(s)]
return self.pods
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