def create_volume(email, name, description, blocksize, **attrs):
caller_user = _check_authenticated(attrs)
# user must exist
user = read_user(email)
if user is None:
raise Exception("No such user '%s'" % email)
# a user can only create volumes for herself (admin can for anyone)
if caller_user.owner_id != user.owner_id and not caller_user.is_admin:
raise Exception("Caller cannot create Volumes for other users")
# check quota for this user
user_volume_ids = list_accessible_volumes(email,
caller_user=caller_user,
projection=['volume_id'])
if len(user_volume_ids) > user.get_volume_quota():
raise Exception("User '%s' has exceeded Volume quota %s" %
(email, user.get_volume_quota()))
new_volume_key = Volume.Create(user,
blocksize=blocksize,
name=name,
description=description,
**attrs)
if new_volume_key != None:
# create succeed. Make a root directory
volume = new_volume_key.get()
MSEntry.MakeRoot(user.owner_id, volume)
return new_volume_key.get()
else:
raise Exception("Failed to create Volume")
rc = verify_data(user.public_key, root_inode_nosig, root_inode_sig)
if not rc:
raise Exception("Root inode not signed by user '%s'" % (user.email))
# finally, verify that the name is *not* numeric
tmp = None
try:
tmp = int(volume_cert.name)
except:
pass
if tmp is not None:
raise Exception("Invalid volume name '%s'" % volume_cert.name)
new_volume_key = Volume.Create(user, volume_cert)
if new_volume_key is not None:
volume = new_volume_key.get()
# put the root inode
MSEntry.MakeRoot(user.owner_id, volume, volume_cert.root)
# put the cert bundle
VolumeCertBundle.Put(volume.volume_id, cert_bundle_bin)
return volume
else:
raise Exception("Failed to create Volume")
