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
  37         super(KubernetesContext, self).__init__()
  38
  39     def init(self, attrs):
  40         super(KubernetesContext, self).init(attrs)
  41
  42         template_cfg = attrs.get('servers', {})
  43         self.template = KubernetesTemplate(self.name, template_cfg)
  44
  45         self.ssh_key = '{}-key'.format(self.name)
  46
  47         self.key_path = self._get_key_path()
  48         self.public_key_path = '{}.pub'.format(self.key_path)
  49
  50     def deploy(self):
  51         LOG.info('Creating ssh key')
  52         self._set_ssh_key()
  53
  54         LOG.info('Launch containers')
  55         self._create_rcs()
  56         self._create_services()
  57         time.sleep(1)
  58         self.template.get_rc_pods()
  59
  60         self._wait_until_running()
  61
  62     def undeploy(self):
  63         self._delete_ssh_key()
  64         self._delete_rcs()
  65         self._delete_pods()
  66         self._delete_services()
  67
  68         super(KubernetesContext, self).undeploy()
  69
  70     def _wait_until_running(self):
  71         while not all(self._check_pod_status(p) for p in self.template.pods):
  72             time.sleep(1)
  73
  74     def _check_pod_status(self, pod):
  75         status = k8s_utils.read_pod_status(pod)
  76         LOG.debug('%s:%s', pod, status)
  77         if status == 'Failed':
  78             LOG.error('Pod %s status is failed', pod)
  79             raise RuntimeError
  80         if status != 'Running':
  81             return False
  82         return True
  83
  84     def _create_services(self):
  85         for obj in self.template.service_objs:
  86             obj.create()
  87
  88     def _delete_services(self):
  89         for obj in self.template.service_objs:
  90             obj.delete()
  91
  92     def _create_rcs(self):
  93         for obj in self.template.k8s_objs:
  94             self._create_rc(obj.get_template())
  95
  96     def _create_rc(self, template):
  97         k8s_utils.create_replication_controller(template)
  98
  99     def _delete_rcs(self):
 100         for rc in self.template.rcs:
 101             self._delete_rc(rc)
 102
 103     def _delete_rc(self, rc):
 104         k8s_utils.delete_replication_controller(rc)
 105
 106     def _delete_pods(self):
 107         for pod in self.template.pods:
 108             self._delete_pod(pod)
 109
 110     def _delete_pod(self, pod):
 111         k8s_utils.delete_pod(pod)
 112
 113     def _get_key_path(self):
 114         task_id = self.name.split('-')[-1]
 115         k = 'files/yardstick_key-{}'.format(task_id)
 116         return pkg_resources.resource_filename('yardstick.resources', k)
 117
 118     def _set_ssh_key(self):
 119         rsa_key = paramiko.RSAKey.generate(bits=BITS_LENGTH)
 120
 121         LOG.info('Writing private key')
 122         rsa_key.write_private_key_file(self.key_path)
 123
 124         LOG.info('Writing public key')
 125         key = '{} {}\n'.format(rsa_key.get_name(), rsa_key.get_base64())
 126         with open(self.public_key_path, 'w') as f:
 127             f.write(key)
 128
 129         LOG.info('Create configmap for ssh key')
 130         k8s_utils.create_config_map(self.ssh_key, {'authorized_keys': key})
 131
 132     def _delete_ssh_key(self):
 133         k8s_utils.delete_config_map(self.ssh_key)
 134         utils.remove_file(self.key_path)
 135         utils.remove_file(self.public_key_path)
 136
 137     def _get_server(self, name):
 138         service_name = '{}-service'.format(name)
 139         service = k8s_utils.get_service_by_name(service_name).ports[0]
 140
 141         host = {
 142             'name': service.name,
 143             'ip': self._get_node_ip(),
 144             'private_ip': k8s_utils.get_pod_by_name(name).status.pod_ip,
 145             'ssh_port': service.node_port,
 146             'user': 'root',
 147             'key_filename': self.key_path,
 148         }
 149
 150         return host
 151
 152     def _get_node_ip(self):
 153         return k8s_utils.get_node_list().items[0].status.addresses[0].address
 154
 155     def _get_network(self, attr_name):
 156         return None