yardstick/benchmark/contexts/node.py

   1 ##############################################################################
   2 # Copyright (c) 2015 Huawei Technologies Co.,Ltd and others.
   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 errno
  12 import subprocess
  13 import os
  14 import collections
  15 import logging
  16
  17 import yaml
  18 import pkg_resources
  19
  20 from yardstick import ssh
  21 from yardstick.benchmark.contexts.base import Context
  22 from yardstick.common import constants as consts
  23
  24 LOG = logging.getLogger(__name__)
  25
  26
  27 class NodeContext(Context):
  28     """Class that handle nodes info"""
  29
  30     __context_type__ = "Node"
  31
  32     def __init__(self):
  33         self.name = None
  34         self.file_path = None
  35         self.nodes = []
  36         self.networks = {}
  37         self.controllers = []
  38         self.computes = []
  39         self.baremetals = []
  40         self.env = {}
  41         super(NodeContext, self).__init__()
  42
  43     def read_config_file(self):
  44         """Read from config file"""
  45
  46         with open(self.file_path) as stream:
  47             LOG.info("Parsing pod file: %s", self.file_path)
  48             cfg = yaml.load(stream)
  49         return cfg
  50
  51     def init(self, attrs):
  52         """initializes itself from the supplied arguments"""
  53         self.name = attrs["name"]
  54         self.file_path = attrs.get("file", "pod.yaml")
  55
  56         try:
  57             cfg = self.read_config_file()
  58         except IOError as ioerror:
  59             if ioerror.errno == errno.ENOENT:
  60                 self.file_path = \
  61                     os.path.join(consts.YARDSTICK_ROOT_PATH, self.file_path)
  62                 cfg = self.read_config_file()
  63             else:
  64                 raise
  65
  66         self.nodes.extend(cfg["nodes"])
  67         self.controllers.extend([node for node in cfg["nodes"]
  68                                  if node["role"] == "Controller"])
  69         self.computes.extend([node for node in cfg["nodes"]
  70                               if node["role"] == "Compute"])
  71         self.baremetals.extend([node for node in cfg["nodes"]
  72                                 if node["role"] == "Baremetal"])
  73         LOG.debug("Nodes: %r", self.nodes)
  74         LOG.debug("Controllers: %r", self.controllers)
  75         LOG.debug("Computes: %r", self.computes)
  76         LOG.debug("BareMetals: %r", self.baremetals)
  77
  78         self.env = attrs.get('env', {})
  79         LOG.debug("Env: %r", self.env)
  80
  81         # add optional static network definition
  82         self.networks.update(cfg.get("networks", {}))
  83
  84     def deploy(self):
  85         config_type = self.env.get('type', '')
  86         if config_type == 'ansible':
  87             self._dispatch_ansible('setup')
  88         elif config_type == 'script':
  89             self._dispatch_script('setup')
  90
  91     def undeploy(self):
  92         config_type = self.env.get('type', '')
  93         if config_type == 'ansible':
  94             self._dispatch_ansible('teardown')
  95         elif config_type == 'script':
  96             self._dispatch_script('teardown')
  97         super(NodeContext, self).undeploy()
  98
  99     def _dispatch_script(self, key):
 100         steps = self.env.get(key, [])
 101         for step in steps:
 102             for host, info in step.items():
 103                 self._execute_script(host, info)
 104
 105     def _dispatch_ansible(self, key):
 106         try:
 107             step = self.env[key]
 108         except KeyError:
 109             pass
 110         else:
 111             self._do_ansible_job(step)
 112
 113     def _do_ansible_job(self, path):
 114         cmd = 'ansible-playbook -i inventory.ini %s' % path
 115         p = subprocess.Popen(cmd, shell=True, cwd=consts.ANSIBLE_DIR)
 116         p.communicate()
 117
 118     def _get_server(self, attr_name):
 119         """lookup server info by name from context
 120         attr_name: a name for a server listed in nodes config file
 121         """
 122         if isinstance(attr_name, collections.Mapping):
 123             return None
 124
 125         if self.name != attr_name.split(".")[1]:
 126             return None
 127         node_name = attr_name.split(".")[0]
 128         matching_nodes = (n for n in self.nodes if n["name"] == node_name)
 129
 130         try:
 131             # A clone is created in order to avoid affecting the
 132             # original one.
 133             node = dict(next(matching_nodes))
 134         except StopIteration:
 135             return None
 136
 137         try:
 138             duplicate = next(matching_nodes)
 139         except StopIteration:
 140             pass
 141         else:
 142             raise ValueError("Duplicate nodes!!! Nodes: %s %s",
 143                              (matching_nodes, duplicate))
 144
 145         node["name"] = attr_name
 146         return node
 147
 148     def _get_network(self, attr_name):
 149         if not isinstance(attr_name, collections.Mapping):
 150             network = self.networks.get(attr_name)
 151
 152         else:
 153             # Don't generalize too much  Just support vld_id
 154             vld_id = attr_name.get('vld_id')
 155             if vld_id is None:
 156                 return None
 157
 158             network = next((n for n in self.networks.values() if
 159                            n.get("vld_id") == vld_id), None)
 160
 161         if network is None:
 162             return None
 163
 164         result = {
 165             # name is required
 166             "name": network["name"],
 167             "vld_id": network.get("vld_id"),
 168             "segmentation_id": network.get("segmentation_id"),
 169             "network_type": network.get("network_type"),
 170             "physical_network": network.get("physical_network"),
 171         }
 172         return result
 173
 174     def _execute_script(self, node_name, info):
 175         if node_name == 'local':
 176             self._execute_local_script(info)
 177         else:
 178             self._execute_remote_script(node_name, info)
 179
 180     def _execute_remote_script(self, node_name, info):
 181         prefix = self.env.get('prefix', '')
 182         script, options = self._get_script(info)
 183
 184         script_file = pkg_resources.resource_filename(prefix, script)
 185
 186         self._get_client(node_name)
 187         self.client._put_file_shell(script_file, '~/{}'.format(script))
 188
 189         cmd = 'sudo bash {} {}'.format(script, options)
 190         status, stdout, stderr = self.client.execute(cmd)
 191         if status:
 192             raise RuntimeError(stderr)
 193
 194     def _execute_local_script(self, info):
 195         script, options = self._get_script(info)
 196         script = os.path.join(consts.YARDSTICK_ROOT_PATH, script)
 197         cmd = ['bash', script, options]
 198
 199         p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
 200         LOG.debug('\n%s', p.communicate()[0])
 201
 202     def _get_script(self, info):
 203         return info.get('script'), info.get('options', '')
 204
 205     def _get_client(self, node_name):
 206         node = self._get_node_info(node_name.strip())
 207
 208         if node is None:
 209             raise SystemExit('No such node')
 210
 211         self.client = ssh.SSH.from_node(node, defaults={'user': 'ubuntu'})
 212
 213         self.client.wait(timeout=600)
 214
 215     def _get_node_info(self, name):
 216         return next((n for n in self.nodes if n['name'].strip() == name))