FM / oslo

/usr/lib/python2.6/site-packages/oslo_utils/

/usr/lib/python2.6/site-packages/oslo_utils

Name	Size	Mode	Actions
locale/	-	0755	rm
tests/	-	0755	rm
encodeutils.py	6309	0644	edit dl rm
encodeutils.pyc	3462	0644	edit dl rm
eventletutils.py	5266	0644	edit dl rm
eventletutils.pyc	3230	0644	edit dl rm
excutils.py	9407	0644	edit dl rm
excutils.pyc	8818	0644	edit dl rm
fileutils.py	2838	0644	edit dl rm
fileutils.pyc	2985	0644	edit dl rm
fixture.py	1556	0644	edit dl rm
fixture.pyc	1732	0644	edit dl rm
fnmatch.py	2600	0644	edit dl rm
fnmatch.pyc	2100	0644	edit dl rm
imageutils.py	6640	0644	edit dl rm
imageutils.pyc	4847	0644	edit dl rm
importutils.py	2359	0644	edit dl rm
importutils.pyc	2472	0644	edit dl rm
netutils.py	11478	0644	edit dl rm
netutils.pyc	11144	0644	edit dl rm
reflection.py	7015	0644	edit dl rm
reflection.pyc	6191	0644	edit dl rm
secretutils.py	1317	0644	edit dl rm
secretutils.pyc	998	0644	edit dl rm
strutils.py	9105	0644	edit dl rm
strutils.pyc	8068	0644	edit dl rm
timeutils.py	14739	0644	edit dl rm
timeutils.pyc	16914	0644	edit dl rm
units.py	922	0644	edit dl rm
units.pyc	593	0644	edit dl rm
uuidutils.py	1349	0644	edit dl rm
uuidutils.pyc	1265	0644	edit dl rm
versionutils.py	2619	0644	edit dl rm
versionutils.pyc	2924	0644	edit dl rm
_i18n.py	1158	0644	edit dl rm
_i18n.pyc	540	0644	edit dl rm
__init__.py	0	0644	edit dl rm
__init__.pyc	142	0644	edit dl rm

Edit: /usr/lib/python2.6/site-packages/oslo_utils/imageutils.py (6640B)

# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
# Copyright (c) 2010 Citrix Systems, Inc.
#
#    Licensed under the Apache License, Version 2.0 (the "License"); you may
#    not use this file except in compliance with the License. You may obtain
#    a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#    License for the specific language governing permissions and limitations
#    under the License.

"""
Helper methods to deal with images.

.. versionadded:: 3.1
"""

import re

from oslo_utils._i18n import _
from oslo_utils import strutils

class QemuImgInfo(object):
    """Parse Qemu image information from command `qemu-img info`'s output.

The instance of :class:`QemuImgInfo` has properties: `image`,
    `backing_file`, `file_format`, `virtual_size`, `cluster_size`,
    `disk_size`, `snapshots` and `encrypted`.
    """
    BACKING_FILE_RE = re.compile((r"^(.*?)\s*$actual\s+path\s*:"
                                  r"\s+(.*?)$\s*$"), re.I)
    TOP_LEVEL_RE = re.compile(r"^([\w\d\s\_\-]+):(.*)$")
    SIZE_RE = re.compile(r"(\d*\.?\d+)(\w+)?(\s*$\s*(\d+)\s+bytes\s*$)?",
                         re.I)

def __init__(self, cmd_output=None):
        details = self._parse(cmd_output or '')
        self.image = details.get('image')
        self.backing_file = details.get('backing_file')
        self.file_format = details.get('file_format')
        self.virtual_size = details.get('virtual_size')
        self.cluster_size = details.get('cluster_size')
        self.disk_size = details.get('disk_size')
        self.snapshots = details.get('snapshot_list', [])
        self.encrypted = details.get('encrypted')

def __str__(self):
        lines = [
            'image: %s' % self.image,
            'file_format: %s' % self.file_format,
            'virtual_size: %s' % self.virtual_size,
            'disk_size: %s' % self.disk_size,
            'cluster_size: %s' % self.cluster_size,
            'backing_file: %s' % self.backing_file,
        ]
        if self.snapshots:
            lines.append("snapshots: %s" % self.snapshots)
        if self.encrypted:
            lines.append("encrypted: %s" % self.encrypted)
        return "\n".join(lines)

def _canonicalize(self, field):
        # Standardize on underscores/lc/no dash and no spaces
        # since qemu seems to have mixed outputs here... and
        # this format allows for better integration with python
        # - i.e. for usage in kwargs and such...
        field = field.lower().strip()
        for c in (" ", "-"):
            field = field.replace(c, '_')
        return field

def _extract_bytes(self, details):
        # Replace it with the byte amount
        real_size = self.SIZE_RE.search(details)
        if not real_size:
            raise ValueError(_('Invalid input value "%s".') % details)
        magnitude = real_size.group(1)
        unit_of_measure = real_size.group(2)
        bytes_info = real_size.group(3)
        if bytes_info:
            return int(real_size.group(4))
        elif not unit_of_measure:
            return int(magnitude)
        return strutils.string_to_bytes('%s%sB' % (magnitude, unit_of_measure),
                                        return_int=True)

def _extract_details(self, root_cmd, root_details, lines_after):
        real_details = root_details
        if root_cmd == 'backing_file':
            # Replace it with the real backing file
            backing_match = self.BACKING_FILE_RE.match(root_details)
            if backing_match:
                real_details = backing_match.group(2).strip()
        elif root_cmd in ['virtual_size', 'cluster_size', 'disk_size']:
            # Replace it with the byte amount (if we can convert it)
            if root_details in ('None', 'unavailable'):
                real_details = 0
            else:
                real_details = self._extract_bytes(root_details)
        elif root_cmd == 'file_format':
            real_details = real_details.strip().lower()
        elif root_cmd == 'snapshot_list':
            # Next line should be a header, starting with 'ID'
            if not lines_after or not lines_after.pop(0).startswith("ID"):
                msg = _("Snapshot list encountered but no header found!")
                raise ValueError(msg)
            real_details = []
            # This is the sprintf pattern we will try to match
            # "%-10s%-20s%7s%20s%15s"
            # ID TAG VM SIZE DATE VM CLOCK (current header)
            while lines_after:
                line = lines_after[0]
                line_pieces = line.split()
                if len(line_pieces) != 6:
                    break
                # Check against this pattern in the final position
                # "%02d:%02d:%02d.%03d"
                date_pieces = line_pieces[5].split(":")
                if len(date_pieces) != 3:
                    break
                lines_after.pop(0)
                real_details.append({
                    'id': line_pieces[0],
                    'tag': line_pieces[1],
                    'vm_size': line_pieces[2],
                    'date': line_pieces[3],
                    'vm_clock': line_pieces[4] + " " + line_pieces[5],
                })
        return real_details

def _parse(self, cmd_output):
        # Analysis done of qemu-img.c to figure out what is going on here
        # Find all points start with some chars and then a ':' then a newline
        # and then handle the results of those 'top level' items in a separate
        # function.
        #
        # TODO(harlowja): newer versions might have a json output format
        #                 we should switch to that whenever possible.
        #                 see: http://bit.ly/XLJXDX
        contents = {}
        lines = [x for x in cmd_output.splitlines() if x.strip()]
        while lines:
            line = lines.pop(0)
            top_level = self.TOP_LEVEL_RE.match(line)
            if top_level:
                root = self._canonicalize(top_level.group(1))
                if not root:
                    continue
                root_details = top_level.group(2).strip()
                details = self._extract_details(root, root_details, lines)
                contents[root] = details
        return contents

cmd: