127 lines
3.3 KiB
Python
127 lines
3.3 KiB
Python
#
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# Copyright 2016 Cray Inc., All Rights Reserved
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import os
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import logging
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import shutil
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import random
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import socket
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from time import time
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from time import sleep
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from oslo_config import cfg
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from subprocess import check_output
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import ConfigParser
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opts = [
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cfg.StrOpt('ramdisk_func_test_workdir',
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help='Path where virtualized node disks will be stored.',
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default="/tmp/ramdisk-func-test/"),
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]
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CONF = cfg.CONF
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CONF.register_opts(opts)
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LOG = logging.getLogger(__name__)
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def ensure_tree(path):
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if not os.path.exists(path):
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os.makedirs(path)
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def _build_disk_path(node_name, disk_name):
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workdir = CONF.ramdisk_func_test_workdir
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node_disks_path = os.path.join(workdir, node_name, "disks")
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ensure_tree(node_disks_path)
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path = "{disks}/{disk_name}.img".format(disks=node_disks_path,
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disk_name=disk_name)
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return path
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def create_empty_disk(node_name, disk_name, size):
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path = _build_disk_path(node_name, disk_name)
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cmd = ["/usr/bin/qemu-img", "create", "-f", "raw", path, size]
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LOG.info(check_output(cmd))
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return path
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def create_disk_from_base(node_name, disk_name, base_image_path):
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path = _build_disk_path(node_name, disk_name)
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shutil.copy(base_image_path, path)
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return path
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def copy_file(source_file, dest_dir):
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ensure_tree(dest_dir)
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shutil.copy(source_file, dest_dir)
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def get_random_mac():
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rnd = lambda: random.randint(0, 255)
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return "52:54:00:%02x:%02x:%02x" % (rnd(), rnd(), rnd())
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def wait_net_service(ip, port, timeout, try_interval=2):
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"""Wait for network service to appear"""
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LOG.info("Waiting for IP {0} port {1} to start".format(ip, port))
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s = socket.socket()
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s.settimeout(try_interval)
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end = time() + timeout
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while time() < end:
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try:
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s.connect((ip, port))
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except socket.timeout:
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# cannot connect after timeout
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continue
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except socket.error:
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# cannot connect immediately (e.g. no route)
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# wait timeout before next try
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sleep(try_interval)
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continue
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else:
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# success!
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s.close()
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return
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raise Exception("Timeout expired")
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class FakeGlobalSectionHead(object):
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def __init__(self, fp):
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self.fp = fp
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self.sechead = '[global]\n'
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def readline(self):
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if self.sechead:
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try:
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return self.sechead
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finally:
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self.sechead = None
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else:
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return self.fp.readline()
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def read_config(path):
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cfg = ConfigParser.ConfigParser()
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cfg.readfp(FakeGlobalSectionHead(open(path)))
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return cfg
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def _pid_of(name):
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return check_output(["pidof", name]).rstrip()
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