def __init__(self, interface, **kwargs):
self.addr = None
self.range_buckets = {}
self.tunnel_bucket = {}
self.interface = interface
for i in range(1, 255):
self.tunnel_bucket[i] = None
# Only used by cygnet_internal (docker < 1.9.0)
self.range_buckets[i] = None
self['endpoints'] = kwargs['endpoints']
self['containers'] = kwargs['containers']
self['interfaces'] = kwargs['interfaces']
self['internal_ip'] = kwargs['internal_ip']
self['external_iface'] = kwargs['external_iface']
# Add callbacks
#
# Should read database here
# Initialize database client
self.ovs_client = OpenvSwitchClient(
'unix:///var/run/openvswitch/db.sock')
# Tables we shall operate on
self.ovs_client.getState(
[OpenvSwitchTable(),
BridgeTable(),
PortTable(),
InterfaceTable()])
def __init__(self, interface, **kwargs):
self.addr = None
self.range_buckets = {}
self.tunnel_bucket = {}
self.interface = interface
for i in range(1, 255):
self.tunnel_bucket[i] = None
# Only used by cygnet_internal (docker < 1.9.0)
self.range_buckets[i] = None
self['endpoints'] = kwargs['endpoints']
self['containers'] = kwargs['containers']
self['interfaces'] = kwargs['interfaces']
self['internal_ip'] = kwargs['internal_ip']
self['external_iface'] = kwargs['external_iface']
# Add callbacks
#
# Should read database here
# Initialize database client
self.ovs_client = OpenvSwitchClient('unix:///var/run/openvswitch/db.sock')
# Tables we shall operate on
self.ovs_client.getState([OpenvSwitchTable(),
BridgeTable(),
PortTable(),
InterfaceTable()])
class openvswitch(dict):
'''
Use an OVS client to query the database for current ovs network.
'''
def __init__(self, interface, **kwargs):
self.addr = None
self.range_buckets = {}
self.tunnel_bucket = {}
self.interface = interface
for i in range(1, 255):
self.tunnel_bucket[i] = None
# Only used by cygnet_internal (docker < 1.9.0)
self.range_buckets[i] = None
self['endpoints'] = kwargs['endpoints']
self['containers'] = kwargs['containers']
self['interfaces'] = kwargs['interfaces']
self['internal_ip'] = kwargs['internal_ip']
self['external_iface'] = kwargs['external_iface']
# Add callbacks
#
# Should read database here
# Initialize database client
self.ovs_client = OpenvSwitchClient('unix:///var/run/openvswitch/db.sock')
# Tables we shall operate on
self.ovs_client.getState([OpenvSwitchTable(),
BridgeTable(),
PortTable(),
InterfaceTable()])
def __getattribute__(self, key, *args):
try:
return dict.__getattribute__(self, key)
except AttributeError as e:
if key in self:
return self[key]
else:
raise e
def __setattr__(self, key, value):
try:
dict.__setattr__(self, key, value)
except AttributeError as e:
if key in self:
self[key] = value
else:
raise e
def __delattr__(self, key):
try:
dict.__delattr__(self, key)
except AttributeError as e:
if key in self:
del self[key]
else:
raise e
def __ovs_setup(self):
if not self.ovs_client.bridgeExists('cygnet0'):
self.ovs_client.addBridge('cygnet0')
self.ovs_client.addPort('cygnet0', self.external_iface)
elif not self.ovs_client.portExists(self.external_iface):
self.ovs_client.addPort('cygnet0', self.external_iface)
ip = IPDB()
ifaces = ip.interfaces
ifaces.cygnet0.begin()
addrs= ip.interfaces[self.external_iface].ipaddr.raw
addr = None
for address, attrs in addrs.items():
if __getIPv4Addr__([address]) == None:
continue
addr = address
ifaces.cygnet0.add_ip(addr[0], int(addr[1]))
ifaces.cygnet0.up()
ifaces.cygnet0.commit()
ifaces[self.external_iface].begin()
ifaces[self.external_iface].down()
ifaces[self.external_iface].commit()
ifaces[self.external_iface].begin()
ifaces[self.external_iface].up()
ifaces[self.external_iface].commit()
ip.release()
def initalize(self):
# check if our setup already exists
self.__ovs_setup()
ip = IPDB()
try:
# Check if public interface is up
self.addr = __getIPv4Addr__(list(ip.interfaces.cygnet0.ipaddr))
self.addr = self.addr[0], str(self.addr[1])
#self.interfaces.append(('cygnet0', self.addr))
except Exception as e:
raise e
finally:
ip.release()
self.range_buckets[int(self.addr[0].split(".")[-1])] = 1
return self.addr
# initContainerNetwork should support both docker < 1.9.0
# and docker <= 1.9.0
# - name and network configurations should only be passed
# by docker plugin
# - Otherwise, we are operating on a single internal network
# which is only useed by docker < 1.9.0 powerstrip adapter
def initContainerNetwork(self, network=None):
if not network:
try:
network = Network(None)
network.name = 'cygnet_internal'
network.address = self['internal_ip']
if not self.ovs_client.bridgeExists(network.name):
self.ovs_client.addBridge(network.name)
self.ovs_client.setBridgeProperty(network.name,
'stp_enable',
True)
except KeyError as e:
print("OpenvSwitch: CYGNET_INTERNAL_IP \
environment variable not found")
raise e
else:
network.name = "cygnet_" + network.id[:8]
if not self.ovs_client.bridgeExists(network.name):
self.ovs_client.addBridge(network.name)
self.ovs_client.setBridgeProperty(network.name,
'stp_enable',
True)
ip = IPDB()
ifaces = ip.interfaces
ifaces[network.name].begin()
ifaces[network.name].add_ip(network.address, network.mask)
ifaces[network.name].up()
ifaces[network.name].commit()
ip.release()
self.interfaces.append(network)
return network
def destroyContainerNetwork(self, network):
if self.ovs_client.bridgeExists(network.name):
self.ovs_client.removeBridge(network.name)
self.interfaces.remove(network)
return True
else:
return False
def addEndpoint(self, *endpoints):
for endpoint in endpoints:
keys = [key for key, value in list(self.tunnel_bucket.items()) if value is None]
if keys:
available = keys[0]
self.tunnel_bucket[available] = endpoint
else:
raise IndexError
for network in self.interfaces:
iface_name = 'gre' + str(available) + "_" + network.name.split("_")[1]
if not self.ovs_client.portExists(iface_name):
self.ovs_client.addPort(network.name, iface_name)
iface = self.ovs_client.getInterface(iface_name)
for key in iface.options[1]:
if isinstance(key, list):
if key[0] == 'remote_ip':
iface.options[1].remove(key)
iface.options.append(OVSAtom(['remote_ip', endpoint]))
iface.type = 'gre'
self.ovs_client.setInterfaceProperty(iface_name, 'type', iface.type)
self.ovs_client.setInterfaceProperty(iface_name,
'options',
iface.options)
def removeEndpoint(self, *endpoints):
for e in endpoints:
endpoint = None
if isinstance(e, int):
endpoint = self.endpoints[e]
else:
endpoint = e
tunnel_idx = [idx for idx, ep in list(self.tunnel_bucket.items()) if ep == endpoint]
if tunnel_idx:
tunnel_idx = tunnel_idx[0]
else:
raise ValueError
iface_name = 'gre' + str(tunnel_idx)
self.ovs_client.removePort(iface_name)
# run("ovs-vsctl del-port gre"+str(tunnel_idx))
self.tunnel_bucket[tunnel_idx] = None
def connectContainer(self, *containers):
for container in containers:
if container['Interface']:
network = container['Interface']
run("pipework "+ network.name + " -i eth1 " + str(container.id)+ " " + container["Address"])
return
else:
addr = str(container.address)
addr_idx = int(addr.split("/")[0].split(".")[-1])
available = (self.range_buckets[addr_idx] is None)
if available:
self.range_buckets[addr_idx] = container.id
run("pipework cygnet_internal -i eth1 " + container.id + " " + addr)
else:
print(("Error connecting container", container.id + ": Address Already taken by container: ", self.range_buckets[addr_idx]))
def disconnectContainer(self, *containers):
for c in containers:
if isinstance(c, int):
container = self.containers[c]
else:
container = c
if container['Interface']:
container['Interface'].detachContainer(container)
else:
addr = str(container["Address"])
addr_idx = int(addr.split("/")[0].split(".")[-1])
self.range_buckets[addr_idx] = None
class openvswitch(dict):
'''
Use an OVS client to query the database for current ovs network.
'''
def __init__(self, interface, **kwargs):
self.addr = None
self.range_buckets = {}
self.tunnel_bucket = {}
self.interface = interface
for i in range(1, 255):
self.tunnel_bucket[i] = None
# Only used by cygnet_internal (docker < 1.9.0)
self.range_buckets[i] = None
self['endpoints'] = kwargs['endpoints']
self['containers'] = kwargs['containers']
self['interfaces'] = kwargs['interfaces']
self['internal_ip'] = kwargs['internal_ip']
self['external_iface'] = kwargs['external_iface']
# Add callbacks
#
# Should read database here
# Initialize database client
self.ovs_client = OpenvSwitchClient(
'unix:///var/run/openvswitch/db.sock')
# Tables we shall operate on
self.ovs_client.getState(
[OpenvSwitchTable(),
BridgeTable(),
PortTable(),
InterfaceTable()])
def __getattribute__(self, key, *args):
try:
return dict.__getattribute__(self, key)
except AttributeError as e:
if key in self:
return self[key]
else:
raise e
def __setattr__(self, key, value):
try:
dict.__setattr__(self, key, value)
except AttributeError as e:
if key in self:
self[key] = value
else:
raise e
def __delattr__(self, key):
try:
dict.__delattr__(self, key)
except AttributeError as e:
if key in self:
del self[key]
else:
raise e
def __ovs_setup(self):
if not self.ovs_client.bridgeExists('cygnet0'):
self.ovs_client.addBridge('cygnet0')
self.ovs_client.addPort('cygnet0', self.external_iface)
elif not self.ovs_client.portExists(self.external_iface):
self.ovs_client.addPort('cygnet0', self.external_iface)
ip = IPDB()
ifaces = ip.interfaces
ifaces.cygnet0.begin()
addrs = ip.interfaces[self.external_iface].ipaddr.raw
addr = None
for address, attrs in addrs.items():
if __getIPv4Addr__([address]) == None:
continue
addr = address
ifaces.cygnet0.add_ip(addr[0], int(addr[1]))
ifaces.cygnet0.up()
ifaces.cygnet0.commit()
ifaces[self.external_iface].begin()
ifaces[self.external_iface].down()
ifaces[self.external_iface].commit()
ifaces[self.external_iface].begin()
ifaces[self.external_iface].up()
ifaces[self.external_iface].commit()
ip.release()
def initalize(self):
# check if our setup already exists
self.__ovs_setup()
ip = IPDB()
try:
# Check if public interface is up
self.addr = __getIPv4Addr__(list(ip.interfaces.cygnet0.ipaddr))
self.addr = self.addr[0], str(self.addr[1])
#self.interfaces.append(('cygnet0', self.addr))
except Exception as e:
raise e
finally:
ip.release()
self.range_buckets[int(self.addr[0].split(".")[-1])] = 1
return self.addr
# initContainerNetwork should support both docker < 1.9.0
# and docker <= 1.9.0
# - name and network configurations should only be passed
# by docker plugin
# - Otherwise, we are operating on a single internal network
# which is only useed by docker < 1.9.0 powerstrip adapter
def initContainerNetwork(self, network=None):
if not network:
try:
network = Network(None)
network.name = 'cygnet_internal'
network.address = self['internal_ip']
if not self.ovs_client.bridgeExists(network.name):
self.ovs_client.addBridge(network.name)
self.ovs_client.setBridgeProperty(network.name,
'stp_enable', True)
except KeyError as e:
print("OpenvSwitch: CYGNET_INTERNAL_IP \
environment variable not found")
raise e
else:
network.name = "cygnet_" + network.id[:8]
if not self.ovs_client.bridgeExists(network.name):
self.ovs_client.addBridge(network.name)
self.ovs_client.setBridgeProperty(network.name, 'stp_enable',
True)
ip = IPDB()
ifaces = ip.interfaces
ifaces[network.name].begin()
ifaces[network.name].add_ip(network.address, network.mask)
ifaces[network.name].up()
ifaces[network.name].commit()
ip.release()
self.interfaces.append(network)
return network
def destroyContainerNetwork(self, network):
if self.ovs_client.bridgeExists(network.name):
self.ovs_client.removeBridge(network.name)
self.interfaces.remove(network)
return True
else:
return False
def addEndpoint(self, *endpoints):
for endpoint in endpoints:
keys = [
key for key, value in list(self.tunnel_bucket.items())
if value is None
]
if keys:
available = keys[0]
self.tunnel_bucket[available] = endpoint
else:
raise IndexError
for network in self.interfaces:
iface_name = 'gre' + str(available) + "_" + network.name.split(
"_")[1]
if not self.ovs_client.portExists(iface_name):
self.ovs_client.addPort(network.name, iface_name)
iface = self.ovs_client.getInterface(iface_name)
for key in iface.options[1]:
if isinstance(key, list):
if key[0] == 'remote_ip':
iface.options[1].remove(key)
iface.options.append(OVSAtom(['remote_ip', endpoint]))
iface.type = 'gre'
self.ovs_client.setInterfaceProperty(iface_name, 'type',
iface.type)
self.ovs_client.setInterfaceProperty(iface_name, 'options',
iface.options)
def removeEndpoint(self, *endpoints):
for e in endpoints:
endpoint = None
if isinstance(e, int):
endpoint = self.endpoints[e]
else:
endpoint = e
tunnel_idx = [
idx for idx, ep in list(self.tunnel_bucket.items())
if ep == endpoint
]
if tunnel_idx:
tunnel_idx = tunnel_idx[0]
else:
raise ValueError
iface_name = 'gre' + str(tunnel_idx)
self.ovs_client.removePort(iface_name)
# run("ovs-vsctl del-port gre"+str(tunnel_idx))
self.tunnel_bucket[tunnel_idx] = None
def connectContainer(self, *containers):
for container in containers:
if container['Interface']:
network = container['Interface']
run("pipework " + network.name + " -i eth1 " +
str(container.id) + " " + container["Address"])
return
else:
addr = str(container.address)
addr_idx = int(addr.split("/")[0].split(".")[-1])
available = (self.range_buckets[addr_idx] is None)
if available:
self.range_buckets[addr_idx] = container.id
run("pipework cygnet_internal -i eth1 " + container.id + " " +
addr)
else:
print(("Error connecting container",
container.id + ": Address Already taken by container: ",
self.range_buckets[addr_idx]))
def disconnectContainer(self, *containers):
for c in containers:
if isinstance(c, int):
container = self.containers[c]
else:
container = c
if container['Interface']:
container['Interface'].detachContainer(container)
else:
addr = str(container["Address"])
addr_idx = int(addr.split("/")[0].split(".")[-1])
self.range_buckets[addr_idx] = None
