def download(self,url="", destination="", object=None, refChecksum = None):
for attempt in range(0,self._max_download_attempts):
try:
download = self._createDownloader(url=url, file = destination, element = object)
self._currentDownloads[url] = download
yield download.deferred
if refChecksum is not None:
isSameChecksum = yield ChecksumTools.compare_hash(refChecksum, destination)
if not isSameChecksum:
raise Exception("File checksum mismatch")
defer.returnValue(None)
except Exception as inst:
print ("Failed to download file at attempt %i because of error %s "%(attempt,str(inst)))
del self._currentDownloads[url]
if os.path.exists(destination):
os.remove(destination)
raise Exception("Failed to download file at %s after %i attempts" %(url, self._max_download_attempts))
def test_compare_hash_false(self):
inputHash = "12d0864b36d60f6036bf8eeab5c1feqsd"
obsCompare = yield ChecksumTools.compare_hash(inputHash, self._testFileName)
self.assertFalse(obsCompare)
def test_compare_hash(self):
inputHash = "18c0864b36d60f6036bf8eeab5c1fe7d"
obsCompare = yield ChecksumTools.compare_hash(inputHash, self._testFileName)
self.assertTrue(obsCompare)
def test_generate_hash(self):
expChecksum = "18c0864b36d60f6036bf8eeab5c1fe7d"
obsChecksum = yield ChecksumTools.generate_hash(filePath=self._testFileName)
self.assertEquals(obsChecksum,expChecksum)
def test_compare_hash_false(self):
inputHash = "12d0864b36d60f6036bf8eeab5c1feqsd"
obsCompare = yield ChecksumTools.compare_hash(inputHash,
self._testFileName)
self.assertFalse(obsCompare)
def test_compare_hash(self):
inputHash = "18c0864b36d60f6036bf8eeab5c1fe7d"
obsCompare = yield ChecksumTools.compare_hash(inputHash,
self._testFileName)
self.assertTrue(obsCompare)
def test_generate_hash(self):
expChecksum = "18c0864b36d60f6036bf8eeab5c1fe7d"
obsChecksum = yield ChecksumTools.generate_hash(
filePath=self._testFileName)
self.assertEquals(obsChecksum, expChecksum)