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