/usr/lib/python2.7/dist-packages/rosdistro/manifest_provider/cache.py is in python-rosdistro 0.4.4-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | # Software License Agreement (BSD License)
#
# Copyright (c) 2013, Open Source Robotics Foundation, Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials provided
# with the distribution.
# * Neither the name of Open Source Robotics Foundation, Inc. nor
# the names of its contributors may be used to endorse or promote
# products derived from this software without specific prior
# written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# POSSIBILITY OF SUCH DAMAGE.
from rosdistro import logger
class CachedManifestProvider(object):
def __init__(self, distribution_cache, manifest_providers=None):
self._distribution_cache = distribution_cache
self._manifest_providers = manifest_providers
def __call__(self, dist_name, repo, pkg_name):
assert repo.version
if pkg_name not in self._distribution_cache.release_package_xmls:
# use manifest providers to lazy load
package_xml = None
for mp in self._manifest_providers or []:
try:
package_xml = mp(dist_name, repo, pkg_name)
break
except Exception as e:
# pass and try next manifest provider
logger.debug('Skipped "%s()": %s' % (mp.__name__, e))
if package_xml is None:
return None
self._distribution_cache.release_package_xmls[pkg_name] = package_xml
else:
logger.debug('Load package.xml file for package "%s" from cache' % pkg_name)
return self._distribution_cache.release_package_xmls[pkg_name]
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