def import_abandon(self, txid, nout):
logger.info("importing abandon txid:{}, nout:{} ".format(txid, nout))
""" handle abandoned claims """
claim_id = self.get_claim_id_from_outpoint(txid, nout)
claim_name = self.get_claim_name(claim_id)
undo_info = self._get_undo_info('abandon', claim_id, claim_name, txid,
nout)
self.db_outpoint_to_claim.delete(txid + int_to_hex(nout, 4))
self.db_claim_outpoint.delete(claim_id)
self.db_claim_values.delete(claim_id)
self.db_claim_height.delete(claim_id)
self.db_claim_addrs.delete(claim_id)
self.db_claim_names.delete(claim_id)
claims_in_db = self.db_claim_order.get(claim_name)
claims_for_name = {} if not claims_in_db else msgpack.unpackb(
claims_in_db)
claim_n = claims_for_name[claim_id]
del claims_for_name[claim_id]
for cid, cn in claims_for_name.iteritems():
if cn > claim_n:
claims_for_name[cid] = cn - 1
self.db_claim_order.delete(claim_name)
self.db_claim_order.put(claim_name, msgpack.packb(claims_for_name))
undo_info = self.import_signed_abandon(claim_id, undo_info)
return undo_info
def import_claim(self, claim, claim_id, claim_address, txid, nout, amount,
block_height):
logger.info(
"importing claim {}, claim id:{}, txid:{}, nout:{} ".format(
claim.name, claim_id, txid, nout))
undo_info = self._get_undo_info('claim', claim_id, claim.name, txid,
nout)
claims_for_name = self.get_claims_for_name(claim.name)
if not claims_for_name:
claim_n = 1
else:
claim_n = max(i for i in claims_for_name.itervalues()) + 1
claims_for_name[claim_id] = claim_n
self.write_claims_for_name(claim.name, claims_for_name)
self.write_outpoint_from_claim_id(claim_id, txid, nout, amount)
self.write_claim_id_from_outpoint(txid, nout, claim_id)
self.db_claim_names.put(claim_id, claim.name)
self.db_claim_values.put(claim_id, claim.value)
self.db_claim_height.put(claim_id, str(block_height))
self.db_claim_addrs.put(claim_id, claim_address)
undo_info = self.import_signed_claim_transaction(
claim, claim_id, undo_info)
return undo_info
def import_update(self, claim, claim_id, claim_address, txid, nout, amount,
block_height):
logger.info(
"importing update {}, claim id:{}, txid:{}, nout:{} ".format(
claim.name, claim_id, txid, nout))
undo_info = self._get_undo_info('update', claim_id, claim.name, txid,
nout)
txid_orig_claim, nout_orig_claim, amount = self.get_outpoint_from_claim_id(
claim_id)
self.db_outpoint_to_claim.delete(txid_orig_claim +
int_to_hex(nout_orig_claim, 4))
self.write_claim_id_from_outpoint(txid, nout, claim_id)
self.write_outpoint_from_claim_id(claim_id, txid, nout, amount)
self.db_claim_values.put(claim_id, claim.value)
self.db_claim_height.put(claim_id, str(block_height))
self.db_claim_addrs.put(claim_id, claim_address)
undo_info = self.import_signed_claim_transaction(
claim, claim_id, undo_info)
return undo_info
def revert_claim_transaction(self, undo_infos):
logger.info('reverting claim:{}'.format(undo_infos))
""" revert claim transaction using undo information"""
for undo_info in undo_infos:
claim_id = undo_info['claim_id']
claim_name = undo_info['claim_name']
claim_type = undo_info['claim_type']
if claim_type == 'update':
self.db_claim_outpoint.put(claim_id,
undo_info['claim_outpoint'])
self.db_claim_names.put(claim_id, undo_info['claim_names'])
self.db_claim_values.put(claim_id, undo_info['claim_values'])
self.db_claim_height.put(claim_id, undo_info['claim_height'])
self.db_claim_addrs.put(claim_id, undo_info['claim_addrs'])
self.db_claim_order.put(claim_name, undo_info['claim_order'])
self.db_outpoint_to_claim.delete(
undo_info['outpoint_to_claim'])
self.db_outpoint_to_claim.put(
undo_info['claim_outpoint'][0:72], claim_id)
# updated to signed claim
if 'cert_to_claims' in undo_info:
cert_id = undo_info['cert_to_claims'][0]
claims = undo_info['cert_to_claims'][1]
self.write_claims_signed_by(cert_id, claims)
self.db_claim_to_cert.delete(claim_id)
# updated from signed claim
if 'prev_cert_to_claims' in undo_info:
prev_cert_id = undo_info['prev_cert_to_claims'][0]
prev_claims = undo_info['prev_cert_to_claims'][1]
self.write_claims_signed_by(prev_cert_id, prev_claims)
self.db_claim_to_cert.put(claim_id,
undo_info['claim_to_cert'])
elif claim_type == 'claim':
self.db_claim_outpoint.delete(claim_id)
self.db_claim_names.delete(claim_id)
self.db_claim_values.delete(claim_id)
self.db_claim_height.delete(claim_id)
self.db_claim_addrs.delete(claim_id)
self.db_outpoint_to_claim.delete(
undo_info['outpoint_to_claim'])
if undo_info['claim_order'] is not None:
self.db_claim_order.put(claim_name,
undo_info['claim_order'])
else:
self.db_claim_order.delete(claim_name)
if 'cert_to_claims' in undo_info:
cert_id = undo_info['cert_to_claims'][0]
claims = undo_info['cert_to_claims'][1]
self.write_claims_signed_by(cert_id, claims)
self.db_claim_to_cert.delete(claim_id)
elif claim_type == 'abandon':
self.db_claim_outpoint.put(claim_id,
undo_info['claim_outpoint'])
self.db_claim_names.put(claim_id, undo_info['claim_names'])
self.db_claim_values.put(claim_id, undo_info['claim_values'])
self.db_claim_height.put(claim_id, undo_info['claim_height'])
self.db_claim_addrs.put(claim_id, undo_info['claim_addrs'])
self.db_claim_order.put(claim_name, undo_info['claim_order'])
self.db_outpoint_to_claim.put(undo_info['outpoint_to_claim'],
claim_id)
if 'cert_to_claims' in undo_info:
cert_id = undo_info['cert_to_claims'][0]
claims = undo_info['cert_to_claims'][1]
self.write_claims_signed_by(cert_id, claims)
self.db_claim_to_cert.put(claim_id,
undo_info['claim_to_cert'])
else:
raise Exception('unhandled claim_type:{}'.format(claim_type))
