class OFManager(object):
def __init__(self, ctr_ip=None):
self.controller_ip = ctr_ip if ctr_ip else const.DEFAULT_ODL_CONTROLLER_IP
self.odlRequest = ODLRestRequest(self.controller_ip)
def write_flow(self, flowbody):
return self.odlRequest.config_openflow(self.controller_ip, flowbody)
def get_input_elem(self, doc):
input = doc.createElement('input')
input.setAttribute("xmlns", "urn:opendaylight:flow:service")
doc.appendChild(input)
return input
def get_node_elem(self, node_id, doc):
node = doc.createElement("node")
node.setAttribute("xmlns:inv", "urn:opendaylight:inventory")
node_id = doc.createTextNode(node_id)
node.appendChild(node_id)
return node
def get_table_elem(self, table_id, doc):
table = doc.createElement("table_id")
table_id = doc.createTextNode(str(table_id))
table.appendChild(table_id)
return table
def get_priority_elem(self, priority, doc):
priority_node = doc.createElement("priority")
prio_value = doc.createTextNode(str(priority))
priority_node.appendChild(prio_value)
return priority_node
def convert_dict_to_xml(self, dict_obj, doc):
node_list = []
for key, value in dict_obj.iteritems():
key_node = doc.createElement(key)
if isinstance(value, dict):
value_nodes = self.convert_dict_to_xml(value, doc)
for node in value_nodes:
key_node.appendChild(node)
elif isinstance(value, list):
value_nodes = self.get_list_node(value, doc)
for node in value_nodes:
key_node.appendChild(node)
else:
value = str(value)
value_node = doc.createTextNode(str(value))
key_node.appendChild(value_node)
node_list.append(key_node)
return node_list
def get_flow_match(self, match, doc):
match_nodes = self.convert_dict_to_xml(match, doc)
return match_nodes
def get_list_node(self, value_list, doc):
node_list = []
for value in value_list:
if isinstance(value, str) or isinstance(value, int):
value_node = doc.createTextNode(value)
node_list.append(value_node)
elif isinstance(value, dict):
value_nodes = self.convert_dict_to_xml(value, doc)
node_list.extend(value_nodes)
return node_list
def convert_flow_toxml(self, node_id, table_id, priority, matches,
action_list):
doc = Document()
input = self.get_input_elem(doc)
node_id = "/inv:nodes/inv:node[inv:id=\"%s\"]" % node_id
node = self.get_node_elem(node_id, doc)
input.appendChild(node)
table = self.get_table_elem(table_id, doc)
input.appendChild(table)
priority = self.get_priority_elem(priority, doc)
input.appendChild(priority)
match = self.get_flow_match(matches, doc)
for node in match:
input.appendChild(node)
instructions = doc.createElement("instructions")
instruction = doc.createElement("instruction")
appl_action = doc.createElement("apply-actions")
appl_action_order = doc.createElement("order")
appl_acion_order_value = doc.createTextNode("0")
appl_action_order.appendChild(appl_acion_order_value)
action_list_nodes = self.convert_dict_to_xml({"action": action_list},
doc)
for action_node in action_list_nodes:
appl_action.appendChild(action_node)
instruction.appendChild(appl_action_order)
instruction.appendChild(appl_action)
instructions.appendChild(instruction)
input.appendChild(instructions)
return input, doc
def get_flow(self,
node_id,
table_id,
priority=0,
flow_id=None,
flow_name=None,
output_port=None,
mod_dmac=None,
ret_pkt=False,
**kwargs):
action_list = []
if output_port:
action_list.append(ofutils.set_output_action(output_port))
if mod_dmac:
action_list.append(ofutils.set_mod_dmac_action(mod_dmac))
if ret_pkt:
action_list.append(ofutils.set_return_pkt_action())
if not flow_id:
flow_id = 1
flow = {
"input": {
"transaction-uri": "odlTraining8",
"flow-ref": ofutils.set_flow_ref(node_id, table_id, flow_id),
"node": ofutils.set_node(node_id),
"flow-table": ofutils.set_flow_table(node_id, table_id),
"flow": {
"priority":
priority,
"table_id":
table_id,
"flow-name":
flow_name if flow_name else ofutils.generate_flow_name(
node_id, table_id, flow_id),
"match":
ofutils.set_match_field(**kwargs),
"instructions":
ofutils.set_actions(action_list)
}
}
}
return flow
def construct_flow(self,
node_id,
table_id,
priority=0,
flow_name=None,
output_port=None,
mod_dmac=None,
ret_pkt=False,
**kwargs):
flow = self.get_flow(node_id,
table_id,
priority,
flow_name=flow_name,
output_port=output_port,
mod_dmac=mod_dmac,
ret_pkt=ret_pkt,
**kwargs)
matches = {"match": flow["input"]["flow"]["match"]}
action_list = flow["input"]["flow"]["instructions"]["instruction"][0][
"apply-actions"]["action"]
flow_xml, doc = self.convert_flow_toxml(node_id, table_id, priority,
matches, action_list)
flow_body = doc.toprettyxml()
print flow_body
self.write_flow(flow_body)
return flow_body
def construct_flow_to_json(self,
node_id,
table_id,
flow_id,
priority=0,
flow_name=None,
output_port=None,
mod_dmac=None,
ret_pkt=False,
**kwargs):
flow = self.get_flow(node_id, table_id, flow_id, priority, flow_name,
output_port, mod_dmac, ret_pkt, **kwargs)
print(flow)
self.write_flow(flow)
return flow
class OFManager(object):
def __init__(self, ctr_ip=None):
self.controller_ip = ctr_ip if ctr_ip else const.DEFAULT_ODL_CONTROLLER_IP
self.odlRequest = ODLRestRequest(self.controller_ip)
def write_flow(self, flowbody):
return self.odlRequest.config_openflow(self.controller_ip, flowbody)
def get_input_elem(self, doc):
input = doc.createElement('input')
input.setAttribute("xmlns","urn:opendaylight:flow:service")
doc.appendChild(input)
return input
def get_node_elem(self, node_id, doc):
node = doc.createElement("node")
node.setAttribute("xmlns:inv","urn:opendaylight:inventory")
node_id = doc.createTextNode(node_id)
node.appendChild(node_id)
return node
def get_table_elem(self, table_id, doc):
table = doc.createElement("table_id")
table_id = doc.createTextNode(str(table_id))
table.appendChild(table_id)
return table
def get_priority_elem(self, priority, doc):
priority_node = doc.createElement("priority")
prio_value = doc.createTextNode(str(priority))
priority_node.appendChild(prio_value)
return priority_node
def convert_dict_to_xml(self, dict_obj, doc):
node_list = []
for key, value in dict_obj.iteritems():
key_node = doc.createElement(key)
if isinstance(value, dict):
value_nodes = self.convert_dict_to_xml(value,doc)
for node in value_nodes:
key_node.appendChild(node)
elif isinstance(value, list):
value_nodes = self.get_list_node(value, doc)
for node in value_nodes:
key_node.appendChild(node)
else:
value = str(value)
value_node = doc.createTextNode(str(value))
key_node.appendChild(value_node)
node_list.append(key_node)
return node_list
def get_flow_match(self, match, doc):
match_nodes = self.convert_dict_to_xml(match, doc)
return match_nodes
def get_list_node(self, value_list, doc):
node_list = []
for value in value_list:
if isinstance(value, str) or isinstance(value, int):
value_node = doc.createTextNode(value)
node_list.append(value_node)
elif isinstance(value,dict):
value_nodes = self.convert_dict_to_xml(value, doc)
node_list.extend(value_nodes)
return node_list
def convert_flow_toxml(self, node_id, table_id, priority, matches, action_list):
doc = Document()
input = self.get_input_elem(doc)
node_id = "/inv:nodes/inv:node[inv:id=\"%s\"]"%node_id
node = self.get_node_elem(node_id, doc)
input.appendChild(node)
table = self.get_table_elem(table_id,doc)
input.appendChild(table)
priority = self.get_priority_elem(priority, doc)
input.appendChild(priority)
match = self.get_flow_match(matches, doc)
for node in match:
input.appendChild(node)
instructions = doc.createElement("instructions")
instruction = doc.createElement("instruction")
appl_action = doc.createElement("apply-actions")
appl_action_order = doc.createElement("order")
appl_acion_order_value = doc.createTextNode("0")
appl_action_order.appendChild(appl_acion_order_value)
action_list_nodes = self.convert_dict_to_xml({"action":action_list}, doc)
for action_node in action_list_nodes:
appl_action.appendChild(action_node)
instruction.appendChild(appl_action_order)
instruction.appendChild(appl_action)
instructions.appendChild(instruction)
input.appendChild(instructions)
return input,doc
def get_flow(self, node_id, table_id, priority=0, flow_id = None,flow_name=None, output_port=None, mod_dmac=None, ret_pkt=False, **kwargs):
action_list = []
if output_port:
action_list.append(ofutils.set_output_action(output_port))
if mod_dmac:
action_list.append(ofutils.set_mod_dmac_action(mod_dmac))
if ret_pkt:
action_list.append(ofutils.set_return_pkt_action())
if not flow_id:
flow_id = 1
flow = {"input":
{
"transaction-uri":"odlTraining8",
"flow-ref":ofutils.set_flow_ref(node_id,table_id, flow_id),
"node":ofutils.set_node(node_id),
"flow-table":ofutils.set_flow_table(node_id, table_id),
"flow":{
"priority":priority,
"table_id":table_id,
"flow-name":flow_name if flow_name else ofutils.generate_flow_name(node_id,table_id,flow_id),
"match":ofutils.set_match_field(**kwargs),
"instructions": ofutils.set_actions(action_list)
}
}
}
return flow
def construct_flow(self, node_id, table_id, priority=0, flow_name=None, output_port=None, mod_dmac=None, ret_pkt=False, **kwargs):
flow = self.get_flow(node_id, table_id, priority, flow_name=flow_name, output_port=output_port, mod_dmac=mod_dmac, ret_pkt=ret_pkt, **kwargs)
matches = {"match": flow["input"]["flow"]["match"]}
action_list =flow["input"]["flow"]["instructions"]["instruction"][0]["apply-actions"]["action"]
flow_xml,doc = self.convert_flow_toxml(node_id, table_id, priority, matches, action_list)
flow_body = doc.toprettyxml()
print flow_body
self.write_flow(flow_body)
return flow_body
def construct_flow_to_json(self, node_id, table_id, flow_id, priority=0, flow_name=None,output_port=None, mod_dmac=None, ret_pkt=False,**kwargs):
flow = self.get_flow(node_id, table_id, flow_id, priority, flow_name, output_port, mod_dmac, ret_pkt, **kwargs)
print(flow)
self.write_flow(flow)
return flow
