def update_flow(flow_id, flow, correlation_id, tx):
try:
old_flow = flow_utils.get_old_flow(flow)
#
# Start the transaction to govern the create/delete
#
logger.info('Flow rules were built: correlation_id=%s, flow_id=%s', correlation_id, flow_id)
rules = flow_utils.build_rules(flow)
# TODO: add tx to store_flow
flow_utils.store_flow(flow, tx)
logger.info('Flow was stored: correlation_id=%s, flow_id=%s', correlation_id, flow_id)
message_utils.send_install_commands(rules, correlation_id)
MessageItem.delete_flow(old_flow['flowid'], old_flow, correlation_id, tx)
payload = {'payload': flow, 'clazz': MT_FLOW_RESPONSE}
message_utils.send_info_message(payload, correlation_id)
except Exception as e:
logger.exception('Can not update flow: %s', e.message)
message_utils.send_error_message(
correlation_id, "UPDATE_FAILURE", e.message, flow_id)
raise
return True
def create_flow(flow_id, flow, correlation_id):
try:
rules = flow_utils.build_rules(flow)
logger.info('Flow rules were built: correlation_id=%s, flow_id=%s',
correlation_id, flow_id)
flow_utils.store_flow(flow)
logger.info('Flow was stored: correlation_id=%s, flow_id=%s',
correlation_id, flow_id)
message_utils.send_install_commands(rules, correlation_id)
logger.info('Flow rules installed: correlation_id=%s, flow_id=%s',
correlation_id, flow_id)
payload = {'payload': flow, 'clazz': MT_FLOW_RESPONSE}
message_utils.send_info_message(payload, correlation_id)
except Exception as e:
logger.exception('Can not create flow: %s', flow_id)
message_utils.send_error_message(correlation_id,
"CREATION_FAILURE", e.message,
flow_id)
raise
return True
def create_flow(flow_id, flow, correlation_id, tx, propagate=True, from_nb=False):
"""
:param propagate: If true, send to switch
:param from_nb: If true, send response to NORTHBOUND API; otherwise to FLOW_TOPOLOGY
:return:
"""
try:
rules = flow_utils.build_rules(flow)
logger.info('Flow rules were built: correlation_id=%s, flow_id=%s',
correlation_id, flow_id)
flow_utils.store_flow(flow, tx)
logger.info('Flow was stored: correlation_id=%s, flow_id=%s',
correlation_id, flow_id)
if propagate:
message_utils.send_install_commands(rules, correlation_id)
logger.info('Flow rules INSTALLED: correlation_id=%s, flow_id=%s', correlation_id, flow_id)
if not from_nb:
message_utils.send_info_message({'payload': flow, 'clazz': MT_FLOW_RESPONSE}, correlation_id)
else:
# The request is sent from Northbound .. send response back
logger.info('Flow rules NOT PROPAGATED: correlation_id=%s, flow_id=%s', correlation_id, flow_id)
data = {"payload":{"flowid": flow_id,"status": "UP"},
"clazz": message_utils.MT_INFO_FLOW_STATUS}
message_utils.send_to_topic(
payload=data,
correlation_id=correlation_id,
message_type=message_utils.MT_INFO,
destination="NORTHBOUND",
topic=config.KAFKA_NORTHBOUND_TOPIC
)
except Exception as e:
logger.exception('Can not create flow: %s', flow_id)
if not from_nb:
# Propagate is the normal scenario, so send response back to FLOW
message_utils.send_error_message(correlation_id, "CREATION_FAILURE", e.message, flow_id)
else:
# This means we tried a PUSH, send response back to NORTHBOUND
message_utils.send_error_message(correlation_id, "PUSH_FAILURE", e.message, flow_id,
destination="NORTHBOUND", topic=config.KAFKA_NORTHBOUND_TOPIC)
raise
return True
def update_flow(flow_id, flow, correlation_id):
try:
old_flow = flow_utils.get_old_flow(flow)
old_flow_path = json.loads(old_flow['flowpath'])['path']
logger.info('Flow path remove: %s', old_flow_path)
flow_utils.remove_flow(old_flow, old_flow_path)
logger.info('Flow was removed: correlation_id=%s, flow_id=%s',
correlation_id, flow_id)
rules = flow_utils.build_rules(flow)
logger.info('Flow rules were built: correlation_id=%s, flow_id=%s',
correlation_id, flow_id)
flow_utils.store_flow(flow)
logger.info('Flow was stored: correlation_id=%s, flow_id=%s',
correlation_id, flow_id)
message_utils.send_install_commands(rules, correlation_id)
logger.info('Flow rules installed: correlation_id=%s, flow_id=%s',
correlation_id, flow_id)
message_utils.send_delete_commands(old_flow_path,
old_flow['flowid'],
correlation_id,
int(old_flow['cookie']))
logger.info('Flow rules removed: correlation_id=%s, flow_id=%s',
correlation_id, flow_id)
payload = {'payload': flow, 'clazz': MT_FLOW_RESPONSE}
message_utils.send_info_message(payload, correlation_id)
except Exception as e:
logger.exception('Can not update flow: %s', e.message)
message_utils.send_error_message(correlation_id, "UPDATE_FAILURE",
e.message, flow_id)
raise
return True