122 lines
3.3 KiB
Python
122 lines
3.3 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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# 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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"""
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System-level utilities and helper functions.
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"""
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from datetime import datetime
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import inspect
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import logging
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import os
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import random
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import subprocess
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import socket
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import sys
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from nova import flags
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FLAGS = flags.FLAGS
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def fetchfile(url, target):
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logging.debug("Fetching %s" % url)
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# c = pycurl.Curl()
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# fp = open(target, "wb")
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# c.setopt(c.URL, url)
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# c.setopt(c.WRITEDATA, fp)
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# c.perform()
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# c.close()
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# fp.close()
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execute("curl %s -o %s" % (url, target))
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def execute(cmd, input=None, addl_env=None):
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env = os.environ.copy()
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if addl_env:
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env.update(addl_env)
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obj = subprocess.Popen(cmd, shell=True, stdin=subprocess.PIPE,
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stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=env)
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result = None
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if input != None:
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result = obj.communicate(input)
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else:
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result = obj.communicate()
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obj.stdin.close()
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if obj.returncode:
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logging.debug("Result was %s" % (obj.returncode))
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return result
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def abspath(s):
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return os.path.join(os.path.dirname(__file__), s)
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def default_flagfile(filename='nova.conf'):
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for arg in sys.argv:
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if arg.find('flagfile') != -1:
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break
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else:
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if not os.path.isabs(filename):
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# turn relative filename into an absolute path
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script_dir = os.path.dirname(inspect.stack()[-1][1])
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filename = os.path.abspath(os.path.join(script_dir, filename))
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if os.path.exists(filename):
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sys.argv = sys.argv[:1] + ['--flagfile=%s' % filename] + sys.argv[1:]
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def debug(arg):
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logging.debug('debug in callback: %s', arg)
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return arg
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def runthis(prompt, cmd):
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logging.debug("Running %s" % (cmd))
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logging.debug(prompt % (subprocess.call(cmd.split(" "))))
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def generate_uid(topic, size=8):
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return '%s-%s' % (topic, ''.join([random.choice('01234567890abcdefghijklmnopqrstuvwxyz') for x in xrange(size)]))
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def generate_mac():
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mac = [0x02, 0x16, 0x3e, random.randint(0x00, 0x7f),
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random.randint(0x00, 0xff), random.randint(0x00, 0xff)
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]
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return ':'.join(map(lambda x: "%02x" % x, mac))
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def last_octet(address):
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return int(address.split(".")[-1])
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def get_my_ip():
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''' returns the actual ip of the local machine.
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'''
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if getattr(FLAGS, 'fake_tests', None):
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return '127.0.0.1'
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csock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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csock.connect(('www.google.com', 80))
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(addr, port) = csock.getsockname()
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csock.close()
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return addr
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def isotime(at=None):
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if not at:
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at = datetime.utcnow()
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return at.strftime("%Y-%m-%dT%H:%M:%SZ")
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