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snapshot: Don't re-download existing files if hashes match

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Stefano Rivera 2010-12-24 11:17:25 +02:00
parent 3354374972
commit 088341fa7c
1 changed files with 13 additions and 0 deletions
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13
pull-debian-debdiff
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@ -17,6 +17,7 @@
# OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR # OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
# PERFORMANCE OF THIS SOFTWARE. # PERFORMANCE OF THIS SOFTWARE.
import hashlib
import optparse import optparse
import os.path import os.path
import subprocess import subprocess
@ -83,16 +84,28 @@ def pull_from_snapshot(package, version, unpack=False):
return False return False
for hash_ in srcfiles['result']: for hash_ in srcfiles['result']:
hash_ = hash_['hash'] hash_ = hash_['hash']
try: try:
info = json.load(urllib2.urlopen( info = json.load(urllib2.urlopen(
'http://snapshot.debian.org/mr/file/%s/info' % hash_)) 'http://snapshot.debian.org/mr/file/%s/info' % hash_))
except urllib2.URLError: except urllib2.URLError:
Logger.error('Unable to dowload info for hash.') Logger.error('Unable to dowload info for hash.')
return False return False
fn = info['result'][0]['name'] fn = info['result'][0]['name']
if '/' in fn: if '/' in fn:
Logger.error('Unacceptable file name: %s', fn) Logger.error('Unacceptable file name: %s', fn)
return False return False
if os.path.exists(fn):
f = open(fn, 'r')
s = hashlib.sha1()
s.update(f.read())
f.close()
if s.hexdigest() == hash_:
Logger.normal('Using existing %s', fn)
continue
Logger.normal('Downloading: %s (%0.3f MiB)', fn, Logger.normal('Downloading: %s (%0.3f MiB)', fn,
info['result'][0]['size'] / 1024.0 / 1024) info['result'][0]['size'] / 1024.0 / 1024)
try: try: