def create_datafile(index):
testfile = path.join(path.dirname(__file__), 'fixtures',
'middleware_test%d.txt' % index)
size, sha512sum = get_size_and_sha512sum(testfile)
datafile = Dataset_File(dataset=dataset,
filename=path.basename(testfile),
size=size,
sha512sum=sha512sum)
datafile.save()
base_url = 'file://' + path.abspath(path.dirname(testfile))
location = Location.load_location({
'name': 'test-middleware',
'url': base_url,
'type': 'external',
'priority': 10,
'transfer_provider': 'local'
})
replica = Replica(datafile=datafile,
url='file://' + path.abspath(testfile),
protocol='file',
location=location)
replica.save()
if index != 1:
replica.verified = False
replica.save(update_fields=['verified'])
return Dataset_File.objects.get(pk=datafile.pk)
def testLocalFile(self):
content = urandom(1024)
cf = ContentFile(content, 'background_task_testfile')
# Create new Datafile
datafile = Dataset_File(dataset=self.dataset)
datafile.filename = cf.name
datafile.size = len(content)
datafile.sha512sum = hashlib.sha512(content).hexdigest()
datafile.save()
replica = Replica(datafile=datafile,
url=write_uploaded_file_to_dataset(self.dataset, cf),
location=Location.get_default_location())
replica.save()
def get_replica(datafile):
return Replica.objects.get(datafile=datafile)
# undo auto-verify:
replica.verified = False
replica.save(update_fields=['verified'])
# Check that it's not currently verified
expect(get_replica(datafile).verified).to_be(False)
# Check it verifies
verify_files()
expect(get_replica(datafile).verified).to_be(True)
def generate_datafile(path, dataset, content=None, size=-1,
verify=True, verified=True):
'''Generates a datafile AND a replica to hold its contents'''
from tardis.tardis_portal.models import Dataset_File, Replica, Location
saved = settings.REQUIRE_DATAFILE_CHECKSUMS
settings.REQUIRE_DATAFILE_CHECKSUMS = False
try:
datafile = Dataset_File()
if content:
datafile.size = str(len(content))
else:
datafile.size = str(size)
# Normally we use any old string for the datafile path, but some
# tests require the path to be the same as what 'staging' would use
if path == None:
datafile.dataset_id = dataset.id
datafile.save()
path = "%s/%s/%s" % (dataset.get_first_experiment().id,
dataset.id, datafile.id)
filepath = os.path.normpath(FILE_STORE_PATH + '/' + path)
if content:
try:
os.makedirs(os.path.dirname(filepath))
os.remove(filepath)
except:
pass
file = open(filepath, 'wb+')
file.write(content)
file.close()
datafile.mimetype = "application/unspecified"
datafile.filename = os.path.basename(filepath)
datafile.dataset_id = dataset.id
datafile.save()
location = _infer_location(path)
replica = Replica(datafile=datafile, url=path, protocol='',
location=location)
if verify and content:
if not replica.verify(allowEmptyChecksums=True):
raise RuntimeError('verify failed!?!')
else:
replica.verified = verified
replica.save()
return (datafile, replica)
finally:
settings.REQUIRE_DATAFILE_CHECKSUMS = saved
def generate_datafile(path, dataset, content=None, size=-1,
verify=True, verified=True, verify_checksums_req=False):
'''Generates a datafile AND a replica to hold its contents'''
from tardis.tardis_portal.models import Dataset_File, Replica, Location
saved = settings.REQUIRE_DATAFILE_CHECKSUMS
settings.REQUIRE_DATAFILE_CHECKSUMS = False
try:
datafile = Dataset_File()
if content:
datafile.size = str(len(content))
else:
datafile.size = str(size)
# Normally we use any old string for the datafile path, but some
# tests require the path to be the same as what 'staging' would use
if path == None:
datafile.dataset_id = dataset.id
datafile.save()
path = "%s/%s/%s" % (dataset.get_first_experiment().id,
dataset.id, datafile.id)
filepath = os.path.normpath(settings.FILE_STORE_PATH + '/' + path)
if content:
try:
os.makedirs(os.path.dirname(filepath))
os.remove(filepath)
except:
pass
gen_file = open(filepath, 'wb+')
gen_file.write(content)
gen_file.close()
datafile.mimetype = "application/unspecified"
datafile.filename = os.path.basename(filepath)
datafile.dataset_id = dataset.id
datafile.save()
settings.REQUIRE_DATAFILE_CHECKSUMS = verify_checksums_req
location = _infer_location(path)
replica = Replica(datafile=datafile, url=path, protocol='',
location=location)
if verify and content:
if not replica.verify():
raise RuntimeError('verify failed!?!')
replica.save()
replica.verified = verified
replica.save(update_fields=['verified']) # force no verification
return (datafile, replica)
finally:
settings.REQUIRE_DATAFILE_CHECKSUMS = saved
def create_datafile(index):
testfile = path.join(path.dirname(__file__), 'fixtures',
'middleware_test%d.txt' % index)
size, sha512sum = get_size_and_sha512sum(testfile)
datafile = Dataset_File(dataset=dataset,
filename=path.basename(testfile),
size=size,
sha512sum=sha512sum)
datafile.save()
base_url = 'file://' + path.abspath(path.dirname(testfile))
location = Location.load_location({
'name': 'test-middleware', 'url': base_url, 'type': 'external',
'priority': 10, 'transfer_provider': 'local'})
replica = Replica(datafile=datafile,
url='file://'+path.abspath(testfile),
protocol='file',
location=location)
replica.save()
if index != 1:
replica.verified = False
replica.save(update_fields=['verified'])
return Dataset_File.objects.get(pk=datafile.pk)
def migrate_replica(replica, location, noRemove=False, mirror=False):
"""
Migrate the replica to a different storage location. The overall
effect will be that the datafile will be stored at the new location and
removed from the current location, and the datafile metadata will be
updated to reflect this.
"""
from tardis.tardis_portal.models import Replica, Location
with transaction.commit_on_success():
replica = Replica.objects.select_for_update().get(pk=replica.pk)
source = Location.get_location(replica.location.name)
if not replica.verified or location.provider.trust_length:
raise MigrationError('Only verified datafiles can be migrated' \
' to this destination')
filename = replica.get_absolute_filepath()
try:
newreplica = Replica.objects.get(datafile=replica.datafile,
location=location)
created_replica = False
# We've most likely mirrored this file previously. But if
# we are about to delete the source Replica, we need to check
# that the target Replica still verifies.
if not mirror and not check_file_transferred(newreplica, location):
raise MigrationError('Previously mirrored / migrated Replica' \
' no longer verifies locally!')
except Replica.DoesNotExist:
newreplica = Replica()
newreplica.location = location
newreplica.datafile = replica.datafile
newreplica.protocol = ''
newreplica.stay_remote = location != Location.get_default_location()
newreplica.verified = False
url = location.provider.generate_url(newreplica)
if newreplica.url == url:
# We should get here ...
raise MigrationError('Cannot migrate a replica to its' \
' current location')
newreplica.url = url
location.provider.put_file(replica, newreplica)
verified = False
try:
verified = check_file_transferred(newreplica, location)
except:
# FIXME - should we always do this?
location.provider.remove_file(newreplica)
raise
newreplica.verified = verified
newreplica.save()
logger.info('Transferred file %s for replica %s' %
(filename, replica.id))
created_replica = True
if mirror:
return created_replica
# FIXME - do this more reliably ...
replica.delete()
if not noRemove:
source.provider.remove_file(replica)
logger.info('Removed local file %s for replica %s' %
(filename, replica.id))
return True
def migrate_replica(replica, location, noRemove=False, mirror=False):
"""
Migrate the replica to a different storage location. The overall
effect will be that the datafile will be stored at the new location and
removed from the current location, and the datafile metadata will be
updated to reflect this.
"""
from tardis.tardis_portal.models import Replica, Location
with transaction.commit_on_success():
replica = Replica.objects.select_for_update().get(pk=replica.pk)
source = Location.get_location(replica.location.name)
if not replica.verified or location.provider.trust_length:
raise MigrationError('Only verified datafiles can be migrated' \
' to this destination')
filename = replica.get_absolute_filepath()
try:
newreplica = Replica.objects.get(datafile=replica.datafile,
location=location)
created_replica = False
# We've most likely mirrored this file previously. But if
# we are about to delete the source Replica, we need to check
# that the target Replica still verifies.
if not mirror and not check_file_transferred(newreplica, location):
raise MigrationError('Previously mirrored / migrated Replica' \
' no longer verifies locally!')
except Replica.DoesNotExist:
newreplica = Replica()
newreplica.location = location
newreplica.datafile = replica.datafile
newreplica.protocol = ''
newreplica.stay_remote = location != Location.get_default_location(
)
newreplica.verified = False
url = location.provider.generate_url(newreplica)
if newreplica.url == url:
# We should get here ...
raise MigrationError('Cannot migrate a replica to its' \
' current location')
newreplica.url = url
location.provider.put_file(replica, newreplica)
verified = False
try:
verified = check_file_transferred(newreplica, location)
except:
# FIXME - should we always do this?
location.provider.remove_file(newreplica)
raise
newreplica.verified = verified
newreplica.save()
logger.info('Transferred file %s for replica %s' %
(filename, replica.id))
created_replica = True
if mirror:
return created_replica
# FIXME - do this more reliably ...
replica.delete()
if not noRemove:
source.provider.remove_file(replica)
logger.info('Removed local file %s for replica %s' %
(filename, replica.id))
return True
