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.constants import YARDSTICK_ROOT_PATH
  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(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         setups = self.env.get('setup', [])
  82         for setup in setups:
  83             for host, info in setup.items():
  84                 self._execute_script(host, info)
  85
  86     def undeploy(self):
  87         teardowns = self.env.get('teardown', [])
  88         for teardown in teardowns:
  89             for host, info in teardown.items():
  90                 self._execute_script(host, info)
  91
  92     def _get_server(self, attr_name):
  93         """lookup server info by name from context
  94         attr_name: a name for a server listed in nodes config file
  95         """
  96         if isinstance(attr_name, collections.Mapping):
  97             return None
  98
  99         if self.name != attr_name.split(".")[1]:
 100             return None
 101         node_name = attr_name.split(".")[0]
 102         matching_nodes = (n for n in self.nodes if n["name"] == node_name)
 103
 104         try:
 105             # A clone is created in order to avoid affecting the
 106             # original one.
 107             node = dict(next(matching_nodes))
 108         except StopIteration:
 109             return None
 110
 111         try:
 112             duplicate = next(matching_nodes)
 113         except StopIteration:
 114             pass
 115         else:
 116             raise ValueError("Duplicate nodes!!! Nodes: %s %s",
 117                              (matching_nodes, duplicate))
 118
 119         node["name"] = attr_name
 120         return node
 121
 122     def _execute_script(self, node_name, info):
 123         if node_name == 'local':
 124             self._execute_local_script(info)
 125         else:
 126             self._execute_remote_script(node_name, info)
 127
 128     def _execute_remote_script(self, node_name, info):
 129         prefix = self.env.get('prefix', '')
 130         script, options = self._get_script(info)
 131
 132         script_file = pkg_resources.resource_filename(prefix, script)
 133
 134         self._get_client(node_name)
 135         self.client._put_file_shell(script_file, '~/{}'.format(script))
 136
 137         cmd = 'sudo bash {} {}'.format(script, options)
 138         status, stdout, stderr = self.client.execute(cmd)
 139         if status:
 140             raise RuntimeError(stderr)
 141
 142     def _execute_local_script(self, info):
 143         script, options = self._get_script(info)
 144         script = os.path.join(YARDSTICK_ROOT_PATH, script)
 145         cmd = ['bash', script, options]
 146
 147         p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
 148         LOG.debug('\n%s', p.communicate()[0])
 149
 150     def _get_script(self, info):
 151         return info.get('script'), info.get('options', '')
 152
 153     def _get_client(self, node_name):
 154         node = self._get_node_info(node_name.strip())
 155
 156         if node is None:
 157             raise SystemExit('No such node')
 158
 159         user = node.get('user', 'ubuntu')
 160         ssh_port = node.get("ssh_port", ssh.DEFAULT_PORT)
 161         ip = node.get('ip')
 162         pwd = node.get('password')
 163         key_fname = node.get('key_filename', '/root/.ssh/id_rsa')
 164
 165         if pwd is not None:
 166             LOG.debug("Log in via pw, user:%s, host:%s, password:%s",
 167                       user, ip, pwd)
 168             self.client = ssh.SSH(user, ip, password=pwd, port=ssh_port)
 169         else:
 170             LOG.debug("Log in via key, user:%s, host:%s, key_filename:%s",
 171                       user, ip, key_fname)
 172             self.client = ssh.SSH(user, ip, key_filename=key_fname,
 173                                   port=ssh_port)
 174
 175         self.client.wait(timeout=600)
 176
 177     def _get_node_info(self, name):
 178         return next((n for n in self.nodes if n['name'].strip() == name))