yardstick/benchmark/contexts/kubernetes.py

   1 ##############################################################################
   2 # Copyright (c) 2017 Huawei Technologies Co.,Ltd.
   3 #
   4 # All rights reserved. This program and the accompanying materials
   5 # are made available under the terms of the Apache License, Version 2.0
   6 # which accompanies this distribution, and is available at
   7 # http://www.apache.org/licenses/LICENSE-2.0
   8 ##############################################################################
   9
  10 from __future__ import absolute_import
  11 import logging
  12 import time
  13 import pkg_resources
  14
  15 import paramiko
  16
  17 from yardstick.benchmark.contexts.base import Context
  18 from yardstick.orchestrator.kubernetes import KubernetesTemplate
  19 from yardstick.common import kubernetes_utils as k8s_utils
  20 from yardstick.common import utils
  21
  22 LOG = logging.getLogger(__name__)
  23 BITS_LENGTH = 2048
  24
  25
  26 class KubernetesContext(Context):
  27     """Class that handle nodes info"""
  28
  29     __context_type__ = "Kubernetes"
  30
  31     def __init__(self):
  32         self.ssh_key = ''
  33         self.key_path = ''
  34         self.public_key_path = ''
  35         self.template = None
  36         super(KubernetesContext, self).__init__(host_name_separator='-')
  37
  38     def init(self, attrs):
  39         super(KubernetesContext, self).init(attrs)
  40
  41         template_cfg = attrs.get('servers', {})
  42         self.template = KubernetesTemplate(self.name, template_cfg)
  43
  44         self.ssh_key = '{}-key'.format(self.name)
  45
  46         self.key_path = self._get_key_path()
  47         self.public_key_path = '{}.pub'.format(self.key_path)
  48
  49     def deploy(self):
  50         LOG.info('Creating ssh key')
  51         self._set_ssh_key()
  52
  53         LOG.info('Launch containers')
  54         self._create_rcs()
  55         self._create_services()
  56         time.sleep(1)
  57         self.template.get_rc_pods()
  58
  59         self._wait_until_running()
  60
  61     def undeploy(self):
  62         self._delete_ssh_key()
  63         self._delete_rcs()
  64         self._delete_pods()
  65         self._delete_services()
  66
  67         super(KubernetesContext, self).undeploy()
  68
  69     def _wait_until_running(self):
  70         while not all(self._check_pod_status(p) for p in self.template.pods):
  71             time.sleep(1)
  72
  73     def _check_pod_status(self, pod):
  74         status = k8s_utils.read_pod_status(pod)
  75         LOG.debug('%s:%s', pod, status)
  76         if status == 'Failed':
  77             LOG.error('Pod %s status is failed', pod)
  78             raise RuntimeError
  79         if status != 'Running':
  80             return False
  81         return True
  82
  83     def _create_services(self):
  84         for obj in self.template.service_objs:
  85             obj.create()
  86
  87     def _delete_services(self):
  88         for obj in self.template.service_objs:
  89             obj.delete()
  90
  91     def _create_rcs(self):
  92         for obj in self.template.k8s_objs:
  93             self._create_rc(obj.get_template())
  94
  95     def _create_rc(self, template):
  96         k8s_utils.create_replication_controller(template)
  97
  98     def _delete_rcs(self):
  99         for rc in self.template.rcs:
 100             self._delete_rc(rc)
 101
 102     def _delete_rc(self, rc):
 103         k8s_utils.delete_replication_controller(rc)
 104
 105     def _delete_pods(self):
 106         for pod in self.template.pods:
 107             self._delete_pod(pod)
 108
 109     def _delete_pod(self, pod):
 110         k8s_utils.delete_pod(pod)
 111
 112     def _get_key_path(self):
 113         task_id = self.name.split('-')[-1]
 114         k = 'files/yardstick_key-{}'.format(task_id)
 115         return pkg_resources.resource_filename('yardstick.resources', k)
 116
 117     def _set_ssh_key(self):
 118         rsa_key = paramiko.RSAKey.generate(bits=BITS_LENGTH)
 119
 120         LOG.info('Writing private key')
 121         rsa_key.write_private_key_file(self.key_path)
 122
 123         LOG.info('Writing public key')
 124         key = '{} {}\n'.format(rsa_key.get_name(), rsa_key.get_base64())
 125         with open(self.public_key_path, 'w') as f:
 126             f.write(key)
 127
 128         LOG.info('Create configmap for ssh key')
 129         k8s_utils.create_config_map(self.ssh_key, {'authorized_keys': key})
 130
 131     def _delete_ssh_key(self):
 132         k8s_utils.delete_config_map(self.ssh_key)
 133         utils.remove_file(self.key_path)
 134         utils.remove_file(self.public_key_path)
 135
 136     def _get_server(self, name):
 137         service_name = '{}-service'.format(name)
 138         service = k8s_utils.get_service_by_name(service_name).ports[0]
 139
 140         host = {
 141             'name': service.name,
 142             'ip': self._get_node_ip(),
 143             'private_ip': k8s_utils.get_pod_by_name(name).status.pod_ip,
 144             'ssh_port': service.node_port,
 145             'user': 'root',
 146             'key_filename': self.key_path,
 147         }
 148
 149         return host
 150
 151     def _get_node_ip(self):
 152         return k8s_utils.get_node_list().items[0].status.addresses[0].address
 153
 154     def _get_network(self, attr_name):
 155         return None