voltha/adapters/maple_olt/maple_olt.py - voltha - Gitiles

 #
 # Copyright 2016 the original author or authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #      http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #

 from uuid import uuid4

 import structlog
 from twisted.internet import reactor
 from twisted.internet.defer import inlineCallbacks
 from zope.interface import implementer

 from common.utils.asleep import asleep
 from voltha.adapters.interface import IAdapterInterface
 from voltha.core.logical_device_agent import mac_str_to_tuple
 from voltha.protos.adapter_pb2 import Adapter, AdapterConfig
 from voltha.protos.device_pb2 import DeviceType, DeviceTypes, Device, Port
 from voltha.protos.health_pb2 import HealthStatus
 from voltha.protos.common_pb2 import LogLevel, OperStatus, ConnectStatus, \
     AdminState
 from voltha.protos.logical_device_pb2 import LogicalDevice, LogicalPort
 from voltha.protos.openflow_13_pb2 import ofp_desc, ofp_port, OFPPF_1GB_FD, \
     OFPPF_FIBER, OFPPS_LIVE, ofp_switch_features, OFPC_PORT_STATS, \
     OFPC_GROUP_STATS, OFPC_TABLE_STATS, OFPC_FLOW_STATS

 log = structlog.get_logger()


 @implementer(IAdapterInterface)
 class MapleOltAdapter(object):

     name = 'maple_olt'

     supported_device_types = [
         DeviceType(
             id='maple_olt',
             adapter=name,
             accepts_bulk_flow_update=True
         )
     ]

     def __init__(self, adapter_agent, config):
         self.adapter_agent = adapter_agent
         self.config = config
         self.descriptor = Adapter(
             id=self.name,
             vendor='Voltha project',
             version='0.1',
             config=AdapterConfig(log_level=LogLevel.INFO)
         )

     def start(self):
         log.debug('starting')
         log.info('started')

     def stop(self):
         log.debug('stopping')
         log.info('stopped')

     def adapter_descriptor(self):
         return self.descriptor

     def device_types(self):
         return DeviceTypes(items=self.supported_device_types)

     def health(self):
         return HealthStatus(state=HealthStatus.HealthState.HEALTHY)

     def change_master_state(self, master):
         raise NotImplementedError()

     def adopt_device(self, device):
         log.info('adopt-device', device=device)
         # We kick of a simulated activation scenario
         reactor.callLater(0.2, self._activate_device, device)
         return device

     def abandon_device(self, device):
         raise NotImplementedError(0
                                   )
     def deactivate_device(self, device):
         raise NotImplementedError()

     def _activate_device(self, device):

         # first we pretend that we were able to contact the device and obtain
         # additional information about it
         device.root = True
         device.vendor = 'Broadcom'
         device.model = 'Maple XYZ'
         device.hardware_version = 'Fill this'
         device.firmware_version = 'Fill this'
         device.software_version = 'Fill this'
         device.serial_number = 'Fill this'
         device.connect_status = ConnectStatus.REACHABLE
         self.adapter_agent.update_device(device)

         # register ports
         nni_port = Port(
             port_no=0,
             label='NNI facing Ethernet port',
             type=Port.ETHERNET_NNI,
             admin_state=AdminState.ENABLED,
             oper_status=OperStatus.ACTIVE
         )
         self.adapter_agent.add_port(device.id, nni_port)
         self.adapter_agent.add_port(device.id, Port(
             port_no=1,
             label='PON port',
             type=Port.PON_OLT,
             admin_state=AdminState.ENABLED,
             oper_status=OperStatus.ACTIVE
         ))

         # register logical device (as we are a root device)
         logical_device_id = uuid4().hex[:12]
         ld = LogicalDevice(
             id=logical_device_id,
             datapath_id=int('0x' + logical_device_id[:8], 16), # from id
             desc=ofp_desc(
                 mfr_desc='cord porject',
                 hw_desc='n/a',
                 sw_desc='logical device for Maple-based PON',
                 serial_num=uuid4().hex,
                 dp_desc='n/a'
             ),
             switch_features=ofp_switch_features(
                 n_buffers=256,  # TODO fake for now
                 n_tables=2,  # TODO ditto
                 capabilities=(  # TODO and ditto
                     OFPC_FLOW_STATS
                     | OFPC_TABLE_STATS
                     | OFPC_PORT_STATS
                     | OFPC_GROUP_STATS
                 )
             ),
             root_device_id=device.id
         )
         self.adapter_agent.create_logical_device(ld)
         cap = OFPPF_1GB_FD | OFPPF_FIBER
         self.adapter_agent.add_logical_port(ld.id, LogicalPort(
             id='nni',
             ofp_port=ofp_port(
                 port_no=0,
                 hw_addr=mac_str_to_tuple('00:00:00:00:00:%02x' % 129),
                 name='nni',
                 config=0,
                 state=OFPPS_LIVE,
                 curr=cap,
                 advertised=cap,
                 peer=cap,
                 curr_speed=OFPPF_1GB_FD,
                 max_speed=OFPPF_1GB_FD
             ),
             device_id=device.id,
             device_port_no=nni_port.port_no,
             root_port=True
         ))

         # and finally update to active
         device = self.adapter_agent.get_device(device.id)
         device.parent_id = ld.id
         device.oper_status = OperStatus.ACTIVE
         self.adapter_agent.update_device(device)

         reactor.callLater(0.1, self._simulate_detection_of_onus, device)

     def _simulate_detection_of_onus(self, device):
         for i in xrange(1, 5):
             log.info('activate-olt-for-onu-{}'.format(i))
             vlan_id = self._olt_side_onu_activation(i)
             self.adapter_agent.child_device_detected(
                 parent_device_id=device.id,
                 parent_port_no=1,
                 child_device_type='broadcom_onu',
                 proxy_address=Device.ProxyAddress(
                     device_id=device.id,
                     channel_id=vlan_id
                 ),
                 vlan=vlan_id
             )

     def _olt_side_onu_activation(self, seq):
         """
         This is where if this was a real OLT, the OLT-side activation for
         the new ONU should be performed. By the time we return, the OLT shall
         be able to provide tunneled (proxy) communication to the given ONU,
         using the returned information.
         """
         vlan_id = seq + 100
         return vlan_id

     def update_flows_bulk(self, device, flows, groups):
         log.debug('bulk-flow-update', device_id=device.id,
                   flows=flows, groups=groups)

     def update_flows_incrementally(self, device, flow_changes, group_changes):
         raise NotImplementedError()

     def send_proxied_message(self, proxy_address, msg):
         log.info('send-proxied-message', proxy_address=proxy_address, msg=msg)
         # we mimic a response by sending the same message back in a short time
         reactor.callLater(
             0.2,
             self.adapter_agent.receive_proxied_message,
             proxy_address,
             msg
         )

     def receive_proxied_message(self, proxy_address, msg):
         raise NotImplementedError()
	#
	# Copyright 2016 the original author or authors.
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.
	#

	from uuid import uuid4

	import structlog
	from twisted.internet import reactor
	from twisted.internet.defer import inlineCallbacks
	from zope.interface import implementer

	from common.utils.asleep import asleep
	from voltha.adapters.interface import IAdapterInterface
	from voltha.core.logical_device_agent import mac_str_to_tuple
	from voltha.protos.adapter_pb2 import Adapter, AdapterConfig
	from voltha.protos.device_pb2 import DeviceType, DeviceTypes, Device, Port
	from voltha.protos.health_pb2 import HealthStatus
	from voltha.protos.common_pb2 import LogLevel, OperStatus, ConnectStatus, \
	AdminState
	from voltha.protos.logical_device_pb2 import LogicalDevice, LogicalPort
	from voltha.protos.openflow_13_pb2 import ofp_desc, ofp_port, OFPPF_1GB_FD, \
	OFPPF_FIBER, OFPPS_LIVE, ofp_switch_features, OFPC_PORT_STATS, \
	OFPC_GROUP_STATS, OFPC_TABLE_STATS, OFPC_FLOW_STATS

	log = structlog.get_logger()


	@implementer(IAdapterInterface)
	class MapleOltAdapter(object):

	name = 'maple_olt'

	supported_device_types = [
	DeviceType(
	id='maple_olt',
	adapter=name,
	accepts_bulk_flow_update=True
	)
	]

	def __init__(self, adapter_agent, config):
	self.adapter_agent = adapter_agent
	self.config = config
	self.descriptor = Adapter(
	id=self.name,
	vendor='Voltha project',
	version='0.1',
	config=AdapterConfig(log_level=LogLevel.INFO)
	)

	def start(self):
	log.debug('starting')
	log.info('started')

	def stop(self):
	log.debug('stopping')
	log.info('stopped')

	def adapter_descriptor(self):
	return self.descriptor

	def device_types(self):
	return DeviceTypes(items=self.supported_device_types)

	def health(self):
	return HealthStatus(state=HealthStatus.HealthState.HEALTHY)

	def change_master_state(self, master):
	raise NotImplementedError()

	def adopt_device(self, device):
	log.info('adopt-device', device=device)
	# We kick of a simulated activation scenario
	reactor.callLater(0.2, self._activate_device, device)
	return device

	def abandon_device(self, device):
	raise NotImplementedError(0
	)
	def deactivate_device(self, device):
	raise NotImplementedError()

	def _activate_device(self, device):

	# first we pretend that we were able to contact the device and obtain
	# additional information about it
	device.root = True
	device.vendor = 'Broadcom'
	device.model = 'Maple XYZ'
	device.hardware_version = 'Fill this'
	device.firmware_version = 'Fill this'
	device.software_version = 'Fill this'
	device.serial_number = 'Fill this'
	device.connect_status = ConnectStatus.REACHABLE
	self.adapter_agent.update_device(device)

	# register ports
	nni_port = Port(
	port_no=0,
	label='NNI facing Ethernet port',
	type=Port.ETHERNET_NNI,
	admin_state=AdminState.ENABLED,
	oper_status=OperStatus.ACTIVE
	)
	self.adapter_agent.add_port(device.id, nni_port)
	self.adapter_agent.add_port(device.id, Port(
	port_no=1,
	label='PON port',
	type=Port.PON_OLT,
	admin_state=AdminState.ENABLED,
	oper_status=OperStatus.ACTIVE
	))

	# register logical device (as we are a root device)
	logical_device_id = uuid4().hex[:12]
	ld = LogicalDevice(
	id=logical_device_id,
	datapath_id=int('0x' + logical_device_id[:8], 16), # from id
	desc=ofp_desc(
	mfr_desc='cord porject',
	hw_desc='n/a',
	sw_desc='logical device for Maple-based PON',
	serial_num=uuid4().hex,
	dp_desc='n/a'
	),
	switch_features=ofp_switch_features(
	n_buffers=256, # TODO fake for now
	n_tables=2, # TODO ditto
	capabilities=( # TODO and ditto
	OFPC_FLOW_STATS
	\| OFPC_TABLE_STATS
	\| OFPC_PORT_STATS
	\| OFPC_GROUP_STATS
	)
	),
	root_device_id=device.id
	)
	self.adapter_agent.create_logical_device(ld)
	cap = OFPPF_1GB_FD \| OFPPF_FIBER
	self.adapter_agent.add_logical_port(ld.id, LogicalPort(
	id='nni',
	ofp_port=ofp_port(
	port_no=0,
	hw_addr=mac_str_to_tuple('00:00:00:00:00:%02x' % 129),
	name='nni',
	config=0,
	state=OFPPS_LIVE,
	curr=cap,
	advertised=cap,
	peer=cap,
	curr_speed=OFPPF_1GB_FD,
	max_speed=OFPPF_1GB_FD
	),
	device_id=device.id,
	device_port_no=nni_port.port_no,
	root_port=True
	))

	# and finally update to active
	device = self.adapter_agent.get_device(device.id)
	device.parent_id = ld.id
	device.oper_status = OperStatus.ACTIVE
	self.adapter_agent.update_device(device)

	reactor.callLater(0.1, self._simulate_detection_of_onus, device)

	def _simulate_detection_of_onus(self, device):
	for i in xrange(1, 5):
	log.info('activate-olt-for-onu-{}'.format(i))
	vlan_id = self._olt_side_onu_activation(i)
	self.adapter_agent.child_device_detected(
	parent_device_id=device.id,
	parent_port_no=1,
	child_device_type='broadcom_onu',
	proxy_address=Device.ProxyAddress(
	device_id=device.id,
	channel_id=vlan_id
	),
	vlan=vlan_id
	)

	def _olt_side_onu_activation(self, seq):
	"""
	This is where if this was a real OLT, the OLT-side activation for
	the new ONU should be performed. By the time we return, the OLT shall
	be able to provide tunneled (proxy) communication to the given ONU,
	using the returned information.
	"""
	vlan_id = seq + 100
	return vlan_id

	def update_flows_bulk(self, device, flows, groups):
	log.debug('bulk-flow-update', device_id=device.id,
	flows=flows, groups=groups)

	def update_flows_incrementally(self, device, flow_changes, group_changes):
	raise NotImplementedError()

	def send_proxied_message(self, proxy_address, msg):
	log.info('send-proxied-message', proxy_address=proxy_address, msg=msg)
	# we mimic a response by sending the same message back in a short time
	reactor.callLater(
	0.2,
	self.adapter_agent.receive_proxied_message,
	proxy_address,
	msg
	)

	def receive_proxied_message(self, proxy_address, msg):
	raise NotImplementedError()