def _handle_delta(database, delta):
# Check for and resolve forks
old_block = database.fetch("blocks", delta.block_num)
if old_block is not None:
if old_block["block_id"] != delta.block_id:
drop_results = database.drop_fork(delta.block_num)
if drop_results["deleted"] == 0:
LOGGER.warning(
"Failed to drop forked resources since block: %s", delta.block_num
)
else:
return
# Parse changes and update database
update = get_updater(database, delta.block_num)
for change in delta.state_changes:
if namespace_ok(change.address):
resources = data_to_dicts(change.address, change.value)
for resource in resources:
update_results = update(change.address, resource)
if update_results["inserted"] == 0:
LOGGER.warning(
"Failed to insert resource from address: %s", change.address
)
# Add new block to database
new_block = {"block_num": delta.block_num, "block_id": delta.block_id}
block_results = database.insert("blocks", new_block)
if block_results["inserted"] == 0:
LOGGER.warning(
"Failed to insert block #%s: %s", delta.block_num, delta.block_id
)
def update_database(conn, state_change):
"""Takes in a delta and database object,
parses the change in the delta,
and writes the changes to the database.
"""
update = get_updater(conn, state_change.block_num)
remove = get_remover(conn)
for change in state_change.state_changes:
if addresser.family.is_family(change.address):
if not change.value:
remove(change.address)
else:
resource = data_to_dicts(change.address, change.value)[0]
update(change.address, resource)
def _handle_delta(database, delta):
""" Handle state changes
"""
try:
# Check for and resolve forks
delta.block_num = int(delta.block_num)
old_block = database.fetch("blocks", delta.block_num)
if old_block is not None:
if old_block["block_id"] != delta.block_id:
drop_results = database.drop_fork(delta.block_num)
if drop_results["deleted"] == 0:
LOGGER.warning(
"Failed to drop forked resources since block: %s",
str(delta.block_num),
)
else:
return
# Parse changes and update database
update = get_updater(database, delta.block_num)
remove = get_remover(database, delta.block_num)
for change in delta.state_changes:
if addresser.family.is_family(change.address):
if not change.value:
remove(change.address)
else:
resources = data_to_dicts(change.address, change.value)
for resource in resources:
update(change.address, resource)
# Add new block to database
new_block = {
"block_num": int(delta.block_num),
"block_id": delta.block_id,
"previous_block_id": delta.previous_block_id,
"state_root_hash": delta.state_root_hash,
"block_datetime": r.now(),
}
block_results = database.insert("blocks", new_block)
if block_results["inserted"] == 0:
LOGGER.warning(
"Failed to insert block #%s: %s", str(delta.block_num), delta.block_id
)
except Exception as err: # pylint: disable=broad-except
LOGGER.exception("%s error handling delta:", type(err))
LOGGER.exception(err)
def update_database(conn, state_change):
"""Takes in a delta and database object,
parses the change in the delta,
and writes the changes to the database.
"""
update = get_updater(conn, state_change.block_num)
remove = get_remover(conn)
for change in state_change.state_changes:
if addresser.family.is_family(change.address):
if not change.value:
remove(change.address)
else:
resource = data_to_dicts(change.address, change.value)[0]
data_type = addresser.get_address_type(change.address)
if data_type in TABLE_NAMES and TABLE_NAMES[data_type] == "roles":
clear_role(conn, resource["role_id"], resource["created_date"])
update(change.address, resource)