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.controllers = []
  37         self.computes = []
  38         self.baremetals = []
  39         self.env = {}
  40         super(NodeContext, self).__init__()
  41
  42     def read_config_file(self):
  43         """Read from config file"""
  44
  45         with open(self.file_path) as stream:
  46             LOG.info("Parsing pod file: %s", self.file_path)
  47             cfg = yaml.load(stream)
  48         return cfg
  49
  50     def init(self, attrs):
  51         """initializes itself from the supplied arguments"""
  52         self.name = attrs["name"]
  53         self.file_path = attrs.get("file", "pod.yaml")
  54
  55         try:
  56             cfg = self.read_config_file()
  57         except IOError as ioerror:
  58             if ioerror.errno == errno.ENOENT:
  59                 self.file_path = \
  60                     os.path.join(consts.YARDSTICK_ROOT_PATH, self.file_path)
  61                 cfg = self.read_config_file()
  62             else:
  63                 raise
  64
  65         self.nodes.extend(cfg["nodes"])
  66         self.controllers.extend([node for node in cfg["nodes"]
  67                                  if node["role"] == "Controller"])
  68         self.computes.extend([node for node in cfg["nodes"]
  69                               if node["role"] == "Compute"])
  70         self.baremetals.extend([node for node in cfg["nodes"]
  71                                 if node["role"] == "Baremetal"])
  72         LOG.debug("Nodes: %r", self.nodes)
  73         LOG.debug("Controllers: %r", self.controllers)
  74         LOG.debug("Computes: %r", self.computes)
  75         LOG.debug("BareMetals: %r", self.baremetals)
  76
  77         self.env = attrs.get('env', {})
  78         LOG.debug("Env: %r", self.env)
  79
  80     def deploy(self):
  81         config_type = self.env.get('type', '')
  82         if config_type == 'ansible':
  83             self._dispatch_ansible('setup')
  84         elif config_type == 'script':
  85             self._dispatch_script('setup')
  86
  87     def undeploy(self):
  88         config_type = self.env.get('type', '')
  89         if config_type == 'ansible':
  90             self._dispatch_ansible('teardown')
  91         elif config_type == 'script':
  92             self._dispatch_script('teardown')
  93         super(NodeContext, self).undeploy()
  94
  95     def _dispatch_script(self, key):
  96         steps = self.env.get(key, [])
  97         for step in steps:
  98             for host, info in step.items():
  99                 self._execute_script(host, info)
 100
 101     def _dispatch_ansible(self, key):
 102         try:
 103             step = self.env[key]
 104         except KeyError:
 105             pass
 106         else:
 107             self._do_ansible_job(step)
 108
 109     def _do_ansible_job(self, path):
 110         cmd = 'ansible-playbook -i inventory.ini %s' % path
 111         p = subprocess.Popen(cmd, shell=True, cwd=consts.ANSIBLE_DIR)
 112         p.communicate()
 113
 114     def _get_server(self, attr_name):
 115         """lookup server info by name from context
 116         attr_name: a name for a server listed in nodes config file
 117         """
 118         if isinstance(attr_name, collections.Mapping):
 119             return None
 120
 121         if self.name != attr_name.split(".")[1]:
 122             return None
 123         node_name = attr_name.split(".")[0]
 124         matching_nodes = (n for n in self.nodes if n["name"] == node_name)
 125
 126         try:
 127             # A clone is created in order to avoid affecting the
 128             # original one.
 129             node = dict(next(matching_nodes))
 130         except StopIteration:
 131             return None
 132
 133         try:
 134             duplicate = next(matching_nodes)
 135         except StopIteration:
 136             pass
 137         else:
 138             raise ValueError("Duplicate nodes!!! Nodes: %s %s",
 139                              (matching_nodes, duplicate))
 140
 141         node["name"] = attr_name
 142         return node
 143
 144     def _execute_script(self, node_name, info):
 145         if node_name == 'local':
 146             self._execute_local_script(info)
 147         else:
 148             self._execute_remote_script(node_name, info)
 149
 150     def _execute_remote_script(self, node_name, info):
 151         prefix = self.env.get('prefix', '')
 152         script, options = self._get_script(info)
 153
 154         script_file = pkg_resources.resource_filename(prefix, script)
 155
 156         self._get_client(node_name)
 157         self.client._put_file_shell(script_file, '~/{}'.format(script))
 158
 159         cmd = 'sudo bash {} {}'.format(script, options)
 160         status, stdout, stderr = self.client.execute(cmd)
 161         if status:
 162             raise RuntimeError(stderr)
 163
 164     def _execute_local_script(self, info):
 165         script, options = self._get_script(info)
 166         script = os.path.join(consts.YARDSTICK_ROOT_PATH, script)
 167         cmd = ['bash', script, options]
 168
 169         p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
 170         LOG.debug('\n%s', p.communicate()[0])
 171
 172     def _get_script(self, info):
 173         return info.get('script'), info.get('options', '')
 174
 175     def _get_client(self, node_name):
 176         node = self._get_node_info(node_name.strip())
 177
 178         if node is None:
 179             raise SystemExit('No such node')
 180
 181         self.client = ssh.SSH.from_node(node, defaults={'user': 'ubuntu'})
 182
 183         self.client.wait(timeout=600)
 184
 185     def _get_node_info(self, name):
 186         return next((n for n in self.nodes if n['name'].strip() == name))