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Viewing changes to friends/utils/avatar.py

  • Committer: Robert Bruce Park
  • Date: 2013-05-01 17:05:12 UTC
  • mfrom: (160.11.31 trunk-next)
  • Revision ID: robert.park@canonical.com-20130501170512-d3xrvv4vmv24k3ir
Land trunk-next into lp:friends.

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friends/utils/avatar.py
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import os
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import errno
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import logging
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from datetime import date, timedelta
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from hashlib import sha1
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from friends.utils.http import Downloader
 
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from friends.errors import ignored
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CACHE_DIR = os.path.realpath(os.path.join(
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AGE_LIMIT = date.today() - timedelta(weeks=4)
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try:
 
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with ignored(FileExistsError):
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    os.makedirs(CACHE_DIR)
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except OSError as error:
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    # It raises OSError if the dir already existed, which is fine,
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    # but don't ignore other errors.
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    if error.errno != errno.EEXIST:
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        raise
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log = logging.getLogger(__name__)
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        if not url:
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            return url
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        local_path = Avatar.get_path(url)
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        try:
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            size = os.stat(local_path).st_size
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            mtime = date.fromtimestamp(os.stat(local_path).st_mtime)
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        except OSError as error:
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            if error.errno != errno.ENOENT:
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                # Some other error occurred, so propagate it up.
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                raise
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            # Treat a missing file as zero length.
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            size = 0
 
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        size = 0
 
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        mtime = date.fromtimestamp(0)
 
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        with ignored(FileNotFoundError):
 
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            stat = os.stat(local_path)
 
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            size = stat.st_size
 
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            mtime = date.fromtimestamp(stat.st_mtime)
 
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        if size == 0 or mtime < AGE_LIMIT:
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            log.debug('Getting: {}'.format(url))
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            image_data = Downloader(url).get_bytes()
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                # The file's last modification time is earlier than the oldest
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                # time we'll allow in the cache.  However, due to race
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                # conditions, ignore it if the file has already been removed.
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                try:
 
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                with ignored(FileNotFoundError):
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                    log.debug('Expiring: {}'.format(path))
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                    os.remove(path)
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                except OSError as error:
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                    if error.errno != errno.ENOENT:
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                        raise