def __init__(self, db_peer=None):
if type(db_peer) not in [str, bytes] and not self.db_peer:
raise TypeError("Database address should be in string format")
protocol = db_peer[:db_peer.find('//') - 1]
if protocol == 'unix':
self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
self.sock.connect(db_peer[db_peer.find('//') + 2:])
elif protocol == 'tcp':
self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.sock.connect(
tuple(db_peer[db_peer.find('//') + 2:].split(":")))
else:
raise OVSExceptions.OVSUnsupportedProtocol
self.monitor_id = None
self.ovs_state = OpenvSwitchState()
def __init__(self, db_peer=None):
if type(db_peer) not in [str, bytes] and not self.db_peer:
raise TypeError("Database address should be in string format")
protocol = db_peer[: db_peer.find("//") - 1]
if protocol == "unix":
self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
self.sock.connect(db_peer[db_peer.find("//") + 2 :])
elif protocol == "tcp":
self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.sock.connect(tuple(db_peer[db_peer.find("//") + 2 :].split(":")))
else:
raise OVSExceptions.OVSUnsupportedProtocol
self.monitor_id = None
self.ovs_state = OpenvSwitchState()
class OpenvSwitchClient(object):
BUFF_SIZE = 32768
cur_id = 0
def __init__(self, db_peer=None):
if type(db_peer) not in [str, bytes] and not self.db_peer:
raise TypeError("Database address should be in string format")
protocol = db_peer[:db_peer.find('//') - 1]
if protocol == 'unix':
self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
self.sock.connect(db_peer[db_peer.find('//') + 2:])
elif protocol == 'tcp':
self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.sock.connect(
tuple(db_peer[db_peer.find('//') + 2:].split(":")))
else:
raise OVSExceptions.OVSUnsupportedProtocol
self.monitor_id = None
self.ovs_state = OpenvSwitchState()
def commit(self, transaction):
if not isinstance(transaction, Transaction):
raise OVSExceptions.OVSValueError("Unexpected Transaction Value")
self.sock.send(bytes(json.dumps(transaction)), 'utf-8')
responses = self.get_responses(self.sock.recv(self.BUFF_SIZE))
for response in responses:
res = json.loads(response)
transaction.handleResult(res)
self.update_notification(res)
self.cur_id += 1
def get_responses(self, response_str):
objects = []
response_str = response_str.decode('utf-8')
while response_str.find('}{') != -1:
obj = response_str[:response_str.find('}{') + 1]
objects.append(obj)
response_str = response_str[len(obj):]
objects.append(response_str)
return objects
def getState(self, monitor_requests):
# Monitor params should be:
# - Tables
updates = []
response = None
params = ["Open_vSwitch", None, dict()]
for request in monitor_requests:
params[2][request.name] = request
payload = {'method': 'monitor', 'id': self.cur_id, 'params': params}
self.sock.send(bytes(json.dumps(payload), 'utf-8'))
self.monitor_id = self.cur_id
responses = self.get_responses(self.sock.recv(self.BUFF_SIZE))
for response in responses:
res = json.loads(response)
update = self.update_notification(res)
if update:
updates.append(update)
for response in updates:
self.ovs_state.update(response)
self.cur_id += 1
return self.ovs_state
def update_notification(self, response):
if 'method' in response and response['method'] == 'update':
self.ovs_state.update(response)
return None
return response
def addBridge(self, bridge_name):
switch = self.ovs_state.switch
if bridge_name in \
[br.name for br in list(self.ovs_state.bridges.values()) if br.name == bridge_name]:
raise OVSExceptions.OVSBridgeExists(bridge_name)
transaction = Transaction(self.cur_id)
# Generate Wait operations
for instance in list(self.ovs_state.ports.values()) + list(
self.ovs_state.bridges.values()):
transaction.addOperation(WaitOperation(instance))
# Build sub-components of a bridge
intern_if = OVSInterface(bridge_name)
intern_if.type = 'internal'
intern_port = OVSPort(bridge_name, [intern_if])
bridge = OVSBridge(bridge_name, [intern_port])
# Generate Insert Operations for built components
transaction.addOperation(InsertOperation(intern_if))
transaction.addOperation(InsertOperation(intern_port))
transaction.addOperation(InsertOperation(bridge))
switch.addBridge(bridge)
transaction.addOperation(UpdateOperation(switch, ['bridges']))
transaction.addOperation(MutateOperation(switch, 'next_cfg', '+='))
self.sock.send(bytes(json.dumps(transaction), 'utf-8'))
del switch.bridges[bridge.uuid]
handled = False
while not handled:
responses = self.get_responses(self.sock.recv(self.BUFF_SIZE))
for response in responses:
res = json.loads(response)
handled = transaction.handleResult(res)
self.update_notification(res)
self.cur_id += 1
def removeBridge(self, bridge_name):
switch = self.ovs_state.switch
bridge = None
if bridge_name in \
[br.name for br in list(switch.bridges.values())]:
bridge = [
br for br in list(switch.bridges.values())
if br.name == bridge_name
][0]
else:
raise OVSExceptions.OVSNoSuchBridge(bridge_name)
transaction = Transaction(self.cur_id)
transaction.addOperation(WaitOperation(switch))
self.ovs_state.removeBridge(bridge.uuid)
transaction.addOperation(UpdateOperation(switch, ['bridges']))
transaction.addOperation(MutateOperation(switch, 'next_cfg', '+='))
self.sock.send(bytes(json.dumps(transaction), 'utf-8'))
responses = self.get_responses(self.sock.recv(self.BUFF_SIZE))
for response in responses:
res = json.loads(response)
transaction.handleResult(res)
self.cur_id += 1
def bridgeExists(self, br_name):
if br_name in \
[br.name for br in list(self.ovs_state.bridges.values())]:
return True
return False
def portExists(self, port_name):
if port_name in \
[port.name for port in list(self.ovs_state.ports.values())]:
return True
return False
def interfaceExists(self, if_name):
if if_name in \
[iface.name for iface in list(self.ovs_state.interfaces.values())]:
return True
return False
def addPort(self, bridge_name, port_name):
if bridge_name not in \
[br.name for br in list(self.ovs_state.bridges.values())]:
raise OVSExceptions.OVSNoSuchBridge(bridge_name)
if port_name in \
[port.name for port in list(self.ovs_state.ports.values())]:
raise OVSExceptions.OVSPortExists(port_name)
transaction = Transaction(self.cur_id)
for instance in list(self.ovs_state.bridges.values()) + list(
self.ovs_state.ports.values()):
transaction.addOperation(WaitOperation(instance))
switch = self.ovs_state.switch
iface = OVSInterface(port_name)
port = OVSPort(port_name, [iface])
transaction.addOperation(InsertOperation(iface))
transaction.addOperation(InsertOperation(port))
bridge = None
for br in list(self.ovs_state.bridges.values()):
if br.name == bridge_name:
bridge = br
break
bridge.ports[port.uuid] = port
transaction.addOperation(UpdateOperation(bridge, 'ports'))
transaction.addOperation(MutateOperation(switch, 'next_cfg', '+='))
self.sock.send(bytes(json.dumps(transaction), 'utf-8'))
del bridge.ports[port.uuid]
responses = self.get_responses(self.sock.recv(self.BUFF_SIZE))
for response in responses:
res = json.loads(response)
transaction.handleResult(res)
self.update_notification(res)
self.cur_id += 1
return True
def removePort(self, port_name):
if port_name not in \
[port.name for port in list(self.ovs_state.ports.values())]:
raise OVSExceptions.OVSNoSuchPort(port_name)
switch = self.ovs_state.switch
transaction = Transaction(self.cur_id)
for instance in list(self.ovs_state.bridges.values()) + list(
self.ovs_state.ports.values()):
transaction.addOperation(WaitOperation(instance))
port = None
for p in list(self.ovs_state.ports.values()):
if p.name == port_name:
port = p
break
bridge = self.ovs_state.removePort(port.uuid)
transaction.addOperation(UpdateOperation(bridge, 'ports'))
transaction.addOperation(MutateOperation(switch, 'next_cfg', '+='))
self.sock.send(bytes(json.dumps(transaction), 'utf-8'))
responses = self.get_responses(self.sock.recv(self.BUFF_SIZE))
for response in responses:
res = json.loads(response)
transaction.handleResult(res)
self.cur_id += 1
return True
def getBridge(self, bridge_name):
for bridge in list(self.ovs_state.bridges.values()):
if bridge.name == bridge_name:
return bridge
raise IndexError("No such bridge")
def getPort(self, port_name):
for port in list(self.ovs_state.ports.values()):
if port.name == port_name:
return port
raise IndexError("No such port")
def getInterface(self, interface_name):
for interface in list(self.ovs_state.interfaces.values()):
if interface.name == interface_name:
return interface
raise IndexError("No such port")
def setBridgeProperty(self, bridge_name, option, value):
bridge = self.getBridge(bridge_name)
if hasattr(bridge, option):
setattr(bridge, option, value)
t = Transaction(self.cur_id)
t.addOperation(WaitOperation(bridge))
t.addOperation(UpdateOperation(bridge))
t.addOperation(MutateOperation(self.ovs_state.switch, 'next_cfg',
'+='))
self.sock.send(bytes(json.dumps(t), 'utf-8'))
responses = self.get_responses(self.sock.recv(self.BUFF_SIZE))
for response in responses:
res = json.loads(response)
t.handleResult(res)
self.update_notification(res)
self.cur_id += 1
def setPortProperty(self, port_name, option, value):
port = self.getPort(port_name)
if hasattr(port, option):
setattr(port, option, value)
t = Transaction(self.cur_id)
t.addOperation(WaitOperation(port))
t.addOperation(UpdateOperation(port))
t.addOperation(MutateOperation(self.ovs_state.switch, 'next_cfg',
'+='))
self.sock.send(bytes(json.dumps(t), 'utf-8'))
responses = self.get_responses(self.sock.recv(self.BUFF_SIZE))
for response in responses:
res = json.loads(response)
t.handleResult(res)
self.update_notification(res)
self.cur_id += 1
def setInterfaceProperty(self, interface_name, option, value):
interface = self.getInterface(interface_name)
if hasattr(interface, option):
setattr(interface, option, value)
t = Transaction(self.cur_id)
t.addOperation(UpdateOperation(interface))
t.addOperation(MutateOperation(self.ovs_state.switch, 'next_cfg',
'+='))
self.sock.send(bytes(json.dumps(t), 'utf-8'))
responses = self.get_responses(self.sock.recv(self.BUFF_SIZE))
for response in responses:
res = json.loads(response)
t.handleResult(res)
self.update_notification(res)
interface = self.getInterface(interface_name)
self.cur_id += 1
def cancel_transact(self, transact_id):
pass
def cancel_monitor(self):
pass
class OpenvSwitchClient(object):
BUFF_SIZE = 32768
cur_id = 0
def __init__(self, db_peer=None):
if type(db_peer) not in [str, bytes] and not self.db_peer:
raise TypeError("Database address should be in string format")
protocol = db_peer[: db_peer.find("//") - 1]
if protocol == "unix":
self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
self.sock.connect(db_peer[db_peer.find("//") + 2 :])
elif protocol == "tcp":
self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.sock.connect(tuple(db_peer[db_peer.find("//") + 2 :].split(":")))
else:
raise OVSExceptions.OVSUnsupportedProtocol
self.monitor_id = None
self.ovs_state = OpenvSwitchState()
def commit(self, transaction):
if not isinstance(transaction, Transaction):
raise OVSExceptions.OVSValueError("Unexpected Transaction Value")
self.sock.send(bytes(json.dumps(transaction)), "utf-8")
responses = self.get_responses(self.sock.recv(self.BUFF_SIZE))
for response in responses:
res = json.loads(response)
transaction.handleResult(res)
self.update_notification(res)
self.cur_id += 1
def get_responses(self, response_str):
objects = []
response_str = response_str.decode("utf-8")
while response_str.find("}{") != -1:
obj = response_str[: response_str.find("}{") + 1]
objects.append(obj)
response_str = response_str[len(obj) :]
objects.append(response_str)
return objects
def getState(self, monitor_requests):
# Monitor params should be:
# - Tables
updates = []
response = None
params = ["Open_vSwitch", None, dict()]
for request in monitor_requests:
params[2][request.name] = request
payload = {"method": "monitor", "id": self.cur_id, "params": params}
self.sock.send(bytes(json.dumps(payload), "utf-8"))
self.monitor_id = self.cur_id
responses = self.get_responses(self.sock.recv(self.BUFF_SIZE))
for response in responses:
res = json.loads(response)
update = self.update_notification(res)
if update:
updates.append(update)
for response in updates:
self.ovs_state.update(response)
self.cur_id += 1
return self.ovs_state
def update_notification(self, response):
if "method" in response and response["method"] == "update":
self.ovs_state.update(response)
return None
return response
def addBridge(self, bridge_name):
switch = self.ovs_state.switch
if bridge_name in [br.name for br in list(self.ovs_state.bridges.values()) if br.name == bridge_name]:
raise OVSExceptions.OVSBridgeExists(bridge_name)
transaction = Transaction(self.cur_id)
# Generate Wait operations
for instance in list(self.ovs_state.ports.values()) + list(self.ovs_state.bridges.values()):
transaction.addOperation(WaitOperation(instance))
# Build sub-components of a bridge
intern_if = OVSInterface(bridge_name)
intern_if.type = "internal"
intern_port = OVSPort(bridge_name, [intern_if])
bridge = OVSBridge(bridge_name, [intern_port])
# Generate Insert Operations for built components
transaction.addOperation(InsertOperation(intern_if))
transaction.addOperation(InsertOperation(intern_port))
transaction.addOperation(InsertOperation(bridge))
switch.addBridge(bridge)
transaction.addOperation(UpdateOperation(switch, ["bridges"]))
transaction.addOperation(MutateOperation(switch, "next_cfg", "+="))
self.sock.send(bytes(json.dumps(transaction), "utf-8"))
del switch.bridges[bridge.uuid]
handled = False
while not handled:
responses = self.get_responses(self.sock.recv(self.BUFF_SIZE))
for response in responses:
res = json.loads(response)
handled = transaction.handleResult(res)
self.update_notification(res)
self.cur_id += 1
def removeBridge(self, bridge_name):
switch = self.ovs_state.switch
bridge = None
if bridge_name in [br.name for br in list(switch.bridges.values())]:
bridge = [br for br in list(switch.bridges.values()) if br.name == bridge_name][0]
else:
raise OVSExceptions.OVSNoSuchBridge(bridge_name)
transaction = Transaction(self.cur_id)
transaction.addOperation(WaitOperation(switch))
self.ovs_state.removeBridge(bridge.uuid)
transaction.addOperation(UpdateOperation(switch, ["bridges"]))
transaction.addOperation(MutateOperation(switch, "next_cfg", "+="))
self.sock.send(bytes(json.dumps(transaction), "utf-8"))
responses = self.get_responses(self.sock.recv(self.BUFF_SIZE))
for response in responses:
res = json.loads(response)
transaction.handleResult(res)
self.cur_id += 1
def bridgeExists(self, br_name):
if br_name in [br.name for br in list(self.ovs_state.bridges.values())]:
return True
return False
def portExists(self, port_name):
if port_name in [port.name for port in list(self.ovs_state.ports.values())]:
return True
return False
def interfaceExists(self, if_name):
if if_name in [iface.name for iface in list(self.ovs_state.interfaces.values())]:
return True
return False
def addPort(self, bridge_name, port_name):
if bridge_name not in [br.name for br in list(self.ovs_state.bridges.values())]:
raise OVSExceptions.OVSNoSuchBridge(bridge_name)
if port_name in [port.name for port in list(self.ovs_state.ports.values())]:
raise OVSExceptions.OVSPortExists(port_name)
transaction = Transaction(self.cur_id)
for instance in list(self.ovs_state.bridges.values()) + list(self.ovs_state.ports.values()):
transaction.addOperation(WaitOperation(instance))
switch = self.ovs_state.switch
iface = OVSInterface(port_name)
port = OVSPort(port_name, [iface])
transaction.addOperation(InsertOperation(iface))
transaction.addOperation(InsertOperation(port))
bridge = None
for br in list(self.ovs_state.bridges.values()):
if br.name == bridge_name:
bridge = br
break
bridge.ports[port.uuid] = port
transaction.addOperation(UpdateOperation(bridge, "ports"))
transaction.addOperation(MutateOperation(switch, "next_cfg", "+="))
self.sock.send(bytes(json.dumps(transaction), "utf-8"))
del bridge.ports[port.uuid]
responses = self.get_responses(self.sock.recv(self.BUFF_SIZE))
for response in responses:
res = json.loads(response)
transaction.handleResult(res)
self.update_notification(res)
self.cur_id += 1
return True
def removePort(self, port_name):
if port_name not in [port.name for port in list(self.ovs_state.ports.values())]:
raise OVSExceptions.OVSNoSuchPort(port_name)
switch = self.ovs_state.switch
transaction = Transaction(self.cur_id)
for instance in list(self.ovs_state.bridges.values()) + list(self.ovs_state.ports.values()):
transaction.addOperation(WaitOperation(instance))
port = None
for p in list(self.ovs_state.ports.values()):
if p.name == port_name:
port = p
break
bridge = self.ovs_state.removePort(port.uuid)
transaction.addOperation(UpdateOperation(bridge, "ports"))
transaction.addOperation(MutateOperation(switch, "next_cfg", "+="))
self.sock.send(bytes(json.dumps(transaction), "utf-8"))
responses = self.get_responses(self.sock.recv(self.BUFF_SIZE))
for response in responses:
res = json.loads(response)
transaction.handleResult(res)
self.cur_id += 1
return True
def getBridge(self, bridge_name):
for bridge in list(self.ovs_state.bridges.values()):
if bridge.name == bridge_name:
return bridge
raise IndexError("No such bridge")
def getPort(self, port_name):
for port in list(self.ovs_state.ports.values()):
if port.name == port_name:
return port
raise IndexError("No such port")
def getInterface(self, interface_name):
for interface in list(self.ovs_state.interfaces.values()):
if interface.name == interface_name:
return interface
raise IndexError("No such port")
def setBridgeProperty(self, bridge_name, option, value):
bridge = self.getBridge(bridge_name)
if hasattr(bridge, option):
setattr(bridge, option, value)
t = Transaction(self.cur_id)
t.addOperation(WaitOperation(bridge))
t.addOperation(UpdateOperation(bridge))
t.addOperation(MutateOperation(self.ovs_state.switch, "next_cfg", "+="))
self.sock.send(bytes(json.dumps(t), "utf-8"))
responses = self.get_responses(self.sock.recv(self.BUFF_SIZE))
for response in responses:
res = json.loads(response)
t.handleResult(res)
self.update_notification(res)
self.cur_id += 1
def setPortProperty(self, port_name, option, value):
port = self.getPort(port_name)
if hasattr(port, option):
setattr(port, option, value)
t = Transaction(self.cur_id)
t.addOperation(WaitOperation(port))
t.addOperation(UpdateOperation(port))
t.addOperation(MutateOperation(self.ovs_state.switch, "next_cfg", "+="))
self.sock.send(bytes(json.dumps(t), "utf-8"))
responses = self.get_responses(self.sock.recv(self.BUFF_SIZE))
for response in responses:
res = json.loads(response)
t.handleResult(res)
self.update_notification(res)
self.cur_id += 1
def setInterfaceProperty(self, interface_name, option, value):
interface = self.getInterface(interface_name)
if hasattr(interface, option):
setattr(interface, option, value)
t = Transaction(self.cur_id)
t.addOperation(UpdateOperation(interface))
t.addOperation(MutateOperation(self.ovs_state.switch, "next_cfg", "+="))
self.sock.send(bytes(json.dumps(t), "utf-8"))
responses = self.get_responses(self.sock.recv(self.BUFF_SIZE))
for response in responses:
res = json.loads(response)
t.handleResult(res)
self.update_notification(res)
interface = self.getInterface(interface_name)
self.cur_id += 1
def cancel_transact(self, transact_id):
pass
def cancel_monitor(self):
pass
