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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 errno
import subprocess
import os
import collections
import logging
import yaml
import pkg_resources
from yardstick import ssh
from yardstick.benchmark.contexts.base import Context
from yardstick.common import constants as consts
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 = []
self.env = {}
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(consts.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)
self.env = attrs.get('env', {})
LOG.debug("Env: %r", self.env)
def deploy(self):
config_type = self.env.get('type', '')
if config_type == 'ansible':
self._dispatch_ansible('setup')
elif config_type == 'script':
self._dispatch_script('setup')
def undeploy(self):
config_type = self.env.get('type', '')
if config_type == 'ansible':
self._dispatch_ansible('teardown')
elif config_type == 'script':
self._dispatch_script('teardown')
super(NodeContext, self).undeploy()
def _dispatch_script(self, key):
steps = self.env.get(key, [])
for step in steps:
for host, info in step.items():
self._execute_script(host, info)
def _dispatch_ansible(self, key):
try:
step = self.env[key]
except KeyError:
pass
else:
self._do_ansible_job(step)
def _do_ansible_job(self, path):
cmd = 'ansible-playbook -i inventory.ini %s' % path
p = subprocess.Popen(cmd, shell=True, cwd=consts.ANSIBLE_DIR)
p.communicate()
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
def _execute_script(self, node_name, info):
if node_name == 'local':
self._execute_local_script(info)
else:
self._execute_remote_script(node_name, info)
def _execute_remote_script(self, node_name, info):
prefix = self.env.get('prefix', '')
script, options = self._get_script(info)
script_file = pkg_resources.resource_filename(prefix, script)
self._get_client(node_name)
self.client._put_file_shell(script_file, '~/{}'.format(script))
cmd = 'sudo bash {} {}'.format(script, options)
status, stdout, stderr = self.client.execute(cmd)
if status:
raise RuntimeError(stderr)
def _execute_local_script(self, info):
script, options = self._get_script(info)
script = os.path.join(consts.YARDSTICK_ROOT_PATH, script)
cmd = ['bash', script, options]
p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
LOG.debug('\n%s', p.communicate()[0])
def _get_script(self, info):
return info.get('script'), info.get('options', '')
def _get_client(self, node_name):
node = self._get_node_info(node_name.strip())
if node is None:
raise SystemExit('No such node')
self.client = ssh.SSH.from_node(node, defaults={'user': 'ubuntu'})
self.client.wait(timeout=600)
def _get_node_info(self, name):
return next((n for n in self.nodes if n['name'].strip() == name))
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