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##############################################################################
# Copyright (c) 2015 Huawei Technologies Co.,Ltd and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
from __future__ import absolute_import
import logging
import errno
import os
import collections
import yaml
from yardstick.benchmark.contexts.base import Context
from yardstick.definitions import YARDSTICK_ROOT_PATH
LOG = logging.getLogger(__name__)
class NodeContext(Context):
"""Class that handle nodes info"""
__context_type__ = "Node"
def __init__(self):
self.name = None
self.file_path = None
self.nodes = []
self.controllers = []
self.computes = []
self.baremetals = []
super(NodeContext, self).__init__()
def read_config_file(self):
"""Read from config file"""
with open(self.file_path) as stream:
LOG.info("Parsing pod file: %s", self.file_path)
cfg = yaml.load(stream)
return cfg
def init(self, attrs):
"""initializes itself from the supplied arguments"""
self.name = attrs["name"]
self.file_path = attrs.get("file", "pod.yaml")
try:
cfg = self.read_config_file()
except IOError as ioerror:
if ioerror.errno == errno.ENOENT:
self.file_path = \
os.path.join(YARDSTICK_ROOT_PATH, self.file_path)
cfg = self.read_config_file()
else:
raise
self.nodes.extend(cfg["nodes"])
self.controllers.extend([node for node in cfg["nodes"]
if node["role"] == "Controller"])
self.computes.extend([node for node in cfg["nodes"]
if node["role"] == "Compute"])
self.baremetals.extend([node for node in cfg["nodes"]
if node["role"] == "Baremetal"])
LOG.debug("Nodes: %r", self.nodes)
LOG.debug("Controllers: %r", self.controllers)
LOG.debug("Computes: %r", self.computes)
LOG.debug("BareMetals: %r", self.baremetals)
def deploy(self):
"""don't need to deploy"""
pass
def undeploy(self):
"""don't need to undeploy"""
pass
def _get_server(self, attr_name):
"""lookup server info by name from context
attr_name: a name for a server listed in nodes config file
"""
if isinstance(attr_name, collections.Mapping):
return None
if self.name != attr_name.split(".")[1]:
return None
node_name = attr_name.split(".")[0]
matching_nodes = (n for n in self.nodes if n["name"] == node_name)
try:
# A clone is created in order to avoid affecting the
# original one.
node = dict(next(matching_nodes))
except StopIteration:
return None
try:
duplicate = next(matching_nodes)
except StopIteration:
pass
else:
raise ValueError("Duplicate nodes!!! Nodes: %s %s",
(matching_nodes, duplicate))
node["name"] = attr_name
return node
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