| # |
| # Copyright 2017 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. |
| # |
| |
| """ |
| Fully simulated OLT adapter. |
| """ |
| |
| import arrow |
| import grpc |
| import structlog |
| from google.protobuf.empty_pb2 import Empty |
| from google.protobuf.json_format import MessageToDict |
| from scapy.layers.inet import Raw |
| import json |
| from google.protobuf.message import Message |
| from grpc._channel import _Rendezvous |
| from scapy.layers.l2 import Ether, Dot1Q |
| from simplejson import dumps |
| from twisted.internet import reactor |
| from twisted.internet.defer import inlineCallbacks, returnValue |
| from twisted.internet.task import LoopingCall |
| |
| from python.adapters.common.frameio.frameio import BpfProgramFilter, hexify |
| from python.common.utils.asleep import asleep |
| from python.common.utils.registry import registry |
| from python.adapters.iadapter import OltAdapter |
| from python.adapters.kafka.kafka_proxy import get_kafka_proxy |
| from python.protos import ponsim_pb2 |
| from python.protos import third_party |
| from python.protos.common_pb2 import OperStatus, ConnectStatus |
| from python.protos.core_adapter_pb2 import SwitchCapability, PortCapability, \ |
| InterAdapterMessageType, InterAdapterResponseBody |
| from python.protos.device_pb2 import Port, PmConfig, PmConfigs |
| from python.protos.events_pb2 import KpiEvent, KpiEventType, MetricValuePairs |
| from python.protos.logical_device_pb2 import LogicalPort |
| from python.protos.openflow_13_pb2 import OFPPS_LIVE, OFPPF_FIBER, \ |
| OFPPF_1GB_FD, \ |
| OFPC_GROUP_STATS, OFPC_PORT_STATS, OFPC_TABLE_STATS, OFPC_FLOW_STATS, \ |
| ofp_switch_features, ofp_desc |
| from python.protos.openflow_13_pb2 import ofp_port |
| from python.protos.ponsim_pb2 import FlowTable, PonSimFrame, PonSimMetricsRequest |
| |
| _ = third_party |
| log = structlog.get_logger() |
| |
| PACKET_IN_VLAN = 4000 |
| is_inband_frame = BpfProgramFilter('(ether[14:2] & 0xfff) = 0x{:03x}'.format( |
| PACKET_IN_VLAN)) |
| |
| |
| def mac_str_to_tuple(mac): |
| return tuple(int(d, 16) for d in mac.split(':')) |
| |
| |
| class AdapterPmMetrics: |
| def __init__(self, device): |
| self.pm_names = {'tx_64_pkts', 'tx_65_127_pkts', 'tx_128_255_pkts', |
| 'tx_256_511_pkts', 'tx_512_1023_pkts', |
| 'tx_1024_1518_pkts', 'tx_1519_9k_pkts', |
| 'rx_64_pkts', 'rx_65_127_pkts', |
| 'rx_128_255_pkts', 'rx_256_511_pkts', |
| 'rx_512_1023_pkts', 'rx_1024_1518_pkts', |
| 'rx_1519_9k_pkts'} |
| self.device = device |
| self.id = device.id |
| self.name = 'ponsim_olt' |
| self.default_freq = 150 |
| self.grouped = False |
| self.freq_override = False |
| self.pon_metrics_config = dict() |
| self.nni_metrics_config = dict() |
| self.lc = None |
| for m in self.pm_names: |
| self.pon_metrics_config[m] = PmConfig(name=m, |
| type=PmConfig.COUNTER, |
| enabled=True) |
| self.nni_metrics_config[m] = PmConfig(name=m, |
| type=PmConfig.COUNTER, |
| enabled=True) |
| |
| def update(self, pm_config): |
| if self.default_freq != pm_config.default_freq: |
| # Update the callback to the new frequency. |
| self.default_freq = pm_config.default_freq |
| self.lc.stop() |
| self.lc.start(interval=self.default_freq / 10) |
| for m in pm_config.metrics: |
| self.pon_metrics_config[m.name].enabled = m.enabled |
| self.nni_metrics_config[m.name].enabled = m.enabled |
| |
| def make_proto(self): |
| pm_config = PmConfigs( |
| id=self.id, |
| default_freq=self.default_freq, |
| grouped=False, |
| freq_override=False) |
| for m in sorted(self.pon_metrics_config): |
| pm = self.pon_metrics_config[m] # Either will do they're the same |
| pm_config.metrics.extend([PmConfig(name=pm.name, |
| type=pm.type, |
| enabled=pm.enabled)]) |
| return pm_config |
| |
| def collect_port_metrics(self, channel): |
| rtrn_port_metrics = dict() |
| stub = ponsim_pb2.PonSimStub(channel) |
| stats = stub.GetStats(Empty()) |
| rtrn_port_metrics['pon'] = self.extract_pon_metrics(stats) |
| rtrn_port_metrics['nni'] = self.extract_nni_metrics(stats) |
| return rtrn_port_metrics |
| |
| def extract_pon_metrics(self, stats): |
| rtrn_pon_metrics = dict() |
| for m in stats.metrics: |
| if m.port_name == "pon": |
| for p in m.packets: |
| if self.pon_metrics_config[p.name].enabled: |
| rtrn_pon_metrics[p.name] = p.value |
| return rtrn_pon_metrics |
| |
| def extract_nni_metrics(self, stats): |
| rtrn_pon_metrics = dict() |
| for m in stats.metrics: |
| if m.port_name == "nni": |
| for p in m.packets: |
| if self.pon_metrics_config[p.name].enabled: |
| rtrn_pon_metrics[p.name] = p.value |
| return rtrn_pon_metrics |
| |
| def start_collector(self, callback): |
| log.info("starting-pm-collection", device_name=self.name, |
| device_id=self.device.id) |
| prefix = 'voltha.{}.{}'.format(self.name, self.device.id) |
| self.lc = LoopingCall(callback, self.device.id, prefix) |
| self.lc.start(interval=self.default_freq / 10) |
| |
| def stop_collector(self): |
| log.info("stopping-pm-collection", device_name=self.name, |
| device_id=self.device.id) |
| self.lc.stop() |
| |
| |
| class AdapterAlarms: |
| def __init__(self, adapter, device): |
| self.adapter = adapter |
| self.device = device |
| self.lc = None |
| |
| # TODO: Implement code to send to kafka cluster directly instead of |
| # going through the voltha core. |
| def send_alarm(self, context_data, alarm_data): |
| log.debug("send-alarm-not-implemented") |
| return |
| |
| |
| class PonSimOltAdapter(OltAdapter): |
| def __init__(self, core_proxy, adapter_proxy, config): |
| super(PonSimOltAdapter, self).__init__(core_proxy=core_proxy, |
| adapter_proxy=adapter_proxy, |
| config=config, |
| device_handler_class=PonSimOltHandler, |
| name='ponsim_olt', |
| vendor='Voltha project', |
| version='0.4', |
| device_type='ponsim_olt', |
| accepts_bulk_flow_update=True, |
| accepts_add_remove_flow_updates=False) |
| |
| def update_pm_config(self, device, pm_config): |
| log.info("adapter-update-pm-config", device=device, |
| pm_config=pm_config) |
| handler = self.devices_handlers[device.id] |
| handler.update_pm_config(device, pm_config) |
| |
| |
| class PonSimOltHandler(object): |
| def __init__(self, adapter, device_id): |
| self.adapter = adapter |
| self.core_proxy = adapter.core_proxy |
| self.adapter_proxy = adapter.adapter_proxy |
| self.device_id = device_id |
| self.log = structlog.get_logger(device_id=device_id) |
| self.channel = None |
| self.io_port = None |
| self.logical_device_id = None |
| self.nni_port = None |
| self.ofp_port_no = None |
| self.interface = registry('main').get_args().interface |
| self.pm_metrics = None |
| self.alarms = None |
| self.frames = None |
| |
| @inlineCallbacks |
| def get_channel(self): |
| if self.channel is None: |
| try: |
| device = yield self.core_proxy.get_device(self.device_id) |
| self.log.info('device-info', device=device, |
| host_port=device.host_and_port) |
| self.channel = grpc.insecure_channel(device.host_and_port) |
| except Exception as e: |
| log.exception("ponsim-connection-failure", e=e) |
| |
| # returnValue(self.channel) |
| |
| def close_channel(self): |
| if self.channel is None: |
| self.log.info('grpc-channel-already-closed') |
| return |
| else: |
| if self.frames is not None: |
| self.frames.cancel() |
| self.frames = None |
| self.log.info('cancelled-grpc-frame-stream') |
| |
| self.channel.unsubscribe(lambda *args: None) |
| self.channel = None |
| |
| self.log.info('grpc-channel-closed') |
| |
| @inlineCallbacks |
| def _get_nni_port(self): |
| ports = yield self.core_proxy.get_ports(self.device_id, |
| Port.ETHERNET_NNI) |
| returnValue(ports) |
| |
| @inlineCallbacks |
| def activate(self, device): |
| try: |
| self.log.info('activating') |
| |
| if not device.host_and_port: |
| device.oper_status = OperStatus.FAILED |
| device.reason = 'No host_and_port field provided' |
| self.core_proxy.device_update(device) |
| return |
| |
| yield self.get_channel() |
| stub = ponsim_pb2.PonSimStub(self.channel) |
| info = stub.GetDeviceInfo(Empty()) |
| log.info('got-info', info=info, device_id=device.id) |
| self.ofp_port_no = info.nni_port |
| |
| device.root = True |
| device.vendor = 'ponsim' |
| device.model = 'n/a' |
| device.serial_number = device.host_and_port |
| device.mac_address = "AA:BB:CC:DD:EE:FF" |
| yield self.core_proxy.device_update(device) |
| |
| # Now set the initial PM configuration for this device |
| self.pm_metrics = AdapterPmMetrics(device) |
| pm_config = self.pm_metrics.make_proto() |
| log.info("initial-pm-config", pm_config=pm_config) |
| self.core_proxy.device_pm_config_update(pm_config, init=True) |
| |
| # Setup alarm handler |
| self.alarms = AdapterAlarms(self.adapter, device) |
| |
| nni_port = Port( |
| port_no=info.nni_port, |
| label='NNI facing Ethernet port', |
| type=Port.ETHERNET_NNI, |
| oper_status=OperStatus.ACTIVE |
| ) |
| self.nni_port = nni_port |
| yield self.core_proxy.port_created(device.id, nni_port) |
| yield self.core_proxy.port_created(device.id, Port( |
| port_no=1, |
| label='PON port', |
| type=Port.PON_OLT, |
| oper_status=OperStatus.ACTIVE |
| )) |
| |
| yield self.core_proxy.device_state_update(device.id, |
| connect_status=ConnectStatus.REACHABLE, |
| oper_status=OperStatus.ACTIVE) |
| |
| # register ONUS |
| self.log.info('onu-found', onus=info.onus, len=len(info.onus)) |
| for onu in info.onus: |
| vlan_id = onu.uni_port |
| yield self.core_proxy.child_device_detected( |
| parent_device_id=device.id, |
| parent_port_no=1, |
| child_device_type='ponsim_onu', |
| channel_id=vlan_id, |
| ) |
| |
| self.log.info('starting-frame-grpc-stream') |
| reactor.callInThread(self.rcv_grpc) |
| self.log.info('started-frame-grpc-stream') |
| |
| # Start collecting stats from the device after a brief pause |
| self.start_kpi_collection(device.id) |
| except Exception as e: |
| log.exception("Exception-activating", e=e) |
| |
| def get_ofp_device_info(self, device): |
| return SwitchCapability( |
| desc=ofp_desc( |
| hw_desc='ponsim pon', |
| sw_desc='ponsim pon', |
| serial_num=device.serial_number, |
| 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 |
| ) |
| ) |
| ) |
| |
| def get_ofp_port_info(self, device, port_no): |
| # Since the adapter created the device port then it has the reference of the port to |
| # return the capability. TODO: Do a lookup on the NNI port number and return the |
| # appropriate attributes |
| self.log.info('get_ofp_port_info', port_no=port_no, |
| info=self.ofp_port_no, device_id=device.id) |
| cap = OFPPF_1GB_FD | OFPPF_FIBER |
| return PortCapability( |
| port=LogicalPort( |
| ofp_port=ofp_port( |
| hw_addr=mac_str_to_tuple( |
| '00:00:00:00:00:%02x' % port_no), |
| 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=port_no |
| ) |
| ) |
| |
| # TODO - change for core 2.0 |
| def reconcile(self, device): |
| self.log.info('reconciling-OLT-device') |
| |
| @inlineCallbacks |
| def _rcv_frame(self, frame): |
| pkt = Ether(frame) |
| |
| if pkt.haslayer(Dot1Q): |
| outer_shim = pkt.getlayer(Dot1Q) |
| |
| if isinstance(outer_shim.payload, Dot1Q): |
| inner_shim = outer_shim.payload |
| cvid = inner_shim.vlan |
| popped_frame = ( |
| Ether(src=pkt.src, dst=pkt.dst, type=inner_shim.type) / |
| inner_shim.payload |
| ) |
| self.log.info('sending-packet-in',device_id=self.device_id, port=cvid) |
| yield self.core_proxy.send_packet_in(device_id=self.device_id, |
| port=cvid, |
| packet=str(popped_frame)) |
| elif pkt.haslayer(Raw): |
| raw_data = json.loads(pkt.getlayer(Raw).load) |
| self.alarms.send_alarm(self, raw_data) |
| |
| @inlineCallbacks |
| def rcv_grpc(self): |
| """ |
| This call establishes a GRPC stream to receive frames. |
| """ |
| yield self.get_channel() |
| stub = ponsim_pb2.PonSimStub(self.channel) |
| # stub = ponsim_pb2.PonSimStub(self.get_channel()) |
| |
| # Attempt to establish a grpc stream with the remote ponsim service |
| self.frames = stub.ReceiveFrames(Empty()) |
| |
| self.log.info('start-receiving-grpc-frames') |
| |
| try: |
| for frame in self.frames: |
| self.log.info('received-grpc-frame', |
| frame_len=len(frame.payload)) |
| yield self._rcv_frame(frame.payload) |
| |
| except _Rendezvous, e: |
| log.warn('grpc-connection-lost', message=e.message) |
| |
| self.log.info('stopped-receiving-grpc-frames') |
| |
| @inlineCallbacks |
| def update_flow_table(self, flows): |
| yield self.get_channel() |
| stub = ponsim_pb2.PonSimStub(self.channel) |
| |
| self.log.info('pushing-olt-flow-table') |
| stub.UpdateFlowTable(FlowTable( |
| port=0, |
| flows=flows |
| )) |
| self.log.info('success') |
| |
| def remove_from_flow_table(self, flows): |
| self.log.debug('remove-from-flow-table', flows=flows) |
| # TODO: Update PONSIM code to accept incremental flow changes |
| # Once completed, the accepts_add_remove_flow_updates for this |
| # device type can be set to True |
| |
| def add_to_flow_table(self, flows): |
| self.log.debug('add-to-flow-table', flows=flows) |
| # TODO: Update PONSIM code to accept incremental flow changes |
| # Once completed, the accepts_add_remove_flow_updates for this |
| # device type can be set to True |
| |
| def update_pm_config(self, device, pm_config): |
| log.info("handler-update-pm-config", device=device, |
| pm_config=pm_config) |
| self.pm_metrics.update(pm_config) |
| |
| def send_proxied_message(self, proxy_address, msg): |
| self.log.info('sending-proxied-message') |
| if isinstance(msg, FlowTable): |
| stub = ponsim_pb2.PonSimStub(self.get_channel()) |
| self.log.info('pushing-onu-flow-table', port=msg.port) |
| res = stub.UpdateFlowTable(msg) |
| self.core_proxy.receive_proxied_message(proxy_address, res) |
| |
| @inlineCallbacks |
| def process_inter_adapter_message(self, request): |
| self.log.info('process-inter-adapter-message', msg=request) |
| try: |
| if request.header.type == InterAdapterMessageType.FLOW_REQUEST: |
| f = FlowTable() |
| if request.body: |
| request.body.Unpack(f) |
| stub = ponsim_pb2.PonSimStub(self.channel) |
| self.log.info('pushing-onu-flow-table') |
| res = stub.UpdateFlowTable(f) |
| # Send response back |
| reply = InterAdapterResponseBody() |
| reply.status = True |
| self.log.info('sending-response-back', reply=reply) |
| yield self.adapter_proxy.send_inter_adapter_message( |
| msg=reply, |
| type=InterAdapterMessageType.FLOW_RESPONSE, |
| from_adapter=self.adapter.name, |
| to_adapter=request.header.from_topic, |
| to_device_id=request.header.to_device_id, |
| message_id=request.header.id |
| ) |
| elif request.header.type == InterAdapterMessageType.METRICS_REQUEST: |
| m = PonSimMetricsRequest() |
| if request.body: |
| request.body.Unpack(m) |
| stub = ponsim_pb2.PonSimStub(self.channel) |
| self.log.info('proxying onu stats request', port=m.port) |
| res = stub.GetStats(m) |
| # Send response back |
| reply = InterAdapterResponseBody() |
| reply.status = True |
| reply.body.Pack(res) |
| self.log.info('sending-response-back', reply=reply) |
| yield self.adapter_proxy.send_inter_adapter_message( |
| msg=reply, |
| type=InterAdapterMessageType.METRICS_RESPONSE, |
| from_adapter=self.adapter.name, |
| to_adapter=request.header.from_topic, |
| to_device_id=request.header.to_device_id, |
| message_id=request.header.id |
| ) |
| except Exception as e: |
| self.log.exception("error-processing-inter-adapter-message", e=e) |
| |
| def packet_out(self, egress_port, msg): |
| self.log.info('sending-packet-out', egress_port=egress_port, |
| msg=hexify(msg)) |
| pkt = Ether(msg) |
| out_pkt = pkt |
| if egress_port != self.nni_port.port_no: |
| # don't do the vlan manipulation for the NNI port, vlans are already correct |
| out_pkt = ( |
| Ether(src=pkt.src, dst=pkt.dst) / |
| Dot1Q(vlan=egress_port, type=pkt.type) / |
| pkt.payload |
| ) |
| |
| # TODO need better way of mapping logical ports to PON ports |
| out_port = self.nni_port.port_no if egress_port == self.nni_port.port_no else 1 |
| |
| # send over grpc stream |
| stub = ponsim_pb2.PonSimStub(self.channel) |
| frame = PonSimFrame(id=self.device_id, payload=str(out_pkt), |
| out_port=out_port) |
| stub.SendFrame(frame) |
| |
| @inlineCallbacks |
| def reboot(self): |
| self.log.info('rebooting', device_id=self.device_id) |
| |
| yield self.core_proxy.device_state_update(self.device_id, |
| connect_status=ConnectStatus.UNREACHABLE) |
| |
| # Update the child devices connect state to UNREACHABLE |
| yield self.core_proxy.children_state_update(self.device_id, |
| connect_status=ConnectStatus.UNREACHABLE) |
| |
| # Sleep 10 secs, simulating a reboot |
| # TODO: send alert and clear alert after the reboot |
| yield asleep(10) |
| |
| # Change the connection status back to REACHABLE. With a |
| # real OLT the connection state must be the actual state |
| yield self.core_proxy.device_state_update(self.device_id, |
| connect_status=ConnectStatus.REACHABLE) |
| |
| # Update the child devices connect state to REACHABLE |
| yield self.core_proxy.children_state_update(self.device_id, |
| connect_status=ConnectStatus.REACHABLE) |
| |
| self.log.info('rebooted', device_id=self.device_id) |
| |
| def self_test_device(self, device): |
| """ |
| This is called to Self a device based on a NBI call. |
| :param device: A Voltha.Device object. |
| :return: Will return result of self test |
| """ |
| log.info('self-test-device', device=device.id) |
| raise NotImplementedError() |
| |
| @inlineCallbacks |
| def disable(self): |
| self.log.info('disabling', device_id=self.device_id) |
| |
| self.stop_kpi_collection() |
| |
| # Update the operational status to UNKNOWN and connection status to UNREACHABLE |
| yield self.core_proxy.device_state_update(self.device_id, |
| oper_status=OperStatus.UNKNOWN, |
| connect_status=ConnectStatus.UNREACHABLE) |
| |
| self.close_channel() |
| self.log.info('disabled-grpc-channel') |
| |
| self.stop_kpi_collection() |
| |
| # TODO: |
| # 1) Remove all flows from the device |
| # 2) Remove the device from ponsim |
| |
| self.log.info('disabled', device_id=self.device_id) |
| |
| @inlineCallbacks |
| def reenable(self): |
| self.log.info('re-enabling', device_id=self.device_id) |
| |
| # Set the ofp_port_no and nni_port in case we bypassed the reconcile |
| # process if the device was in DISABLED state on voltha restart |
| if not self.ofp_port_no and not self.nni_port: |
| yield self.get_channel() |
| stub = ponsim_pb2.PonSimStub(self.channel) |
| info = stub.GetDeviceInfo(Empty()) |
| log.info('got-info', info=info) |
| self.ofp_port_no = info.nni_port |
| ports = yield self._get_nni_port() |
| # For ponsim, we are using only 1 NNI port |
| if ports.items: |
| self.nni_port = ports.items[0] |
| |
| # Update the state of the NNI port |
| yield self.core_proxy.port_state_update(self.device_id, |
| port_type=Port.ETHERNET_NNI, |
| port_no=self.ofp_port_no, |
| oper_status=OperStatus.ACTIVE) |
| |
| # Update the state of the PON port |
| yield self.core_proxy.port_state_update(self.device_id, |
| port_type=Port.PON_OLT, |
| port_no=1, |
| oper_status=OperStatus.ACTIVE) |
| |
| # Set the operational state of the device to ACTIVE and connect status to REACHABLE |
| yield self.core_proxy.device_state_update(self.device_id, |
| connect_status=ConnectStatus.REACHABLE, |
| oper_status=OperStatus.ACTIVE) |
| |
| # TODO: establish frame grpc-stream |
| # yield reactor.callInThread(self.rcv_grpc) |
| |
| self.start_kpi_collection(self.device_id) |
| |
| self.log.info('re-enabled', device_id=self.device_id) |
| |
| def delete(self): |
| self.log.info('deleting', device_id=self.device_id) |
| |
| self.close_channel() |
| self.log.info('disabled-grpc-channel') |
| |
| # TODO: |
| # 1) Remove all flows from the device |
| # 2) Remove the device from ponsim |
| |
| self.log.info('deleted', device_id=self.device_id) |
| |
| def start_kpi_collection(self, device_id): |
| |
| kafka_cluster_proxy = get_kafka_proxy() |
| |
| def _collect(device_id, prefix): |
| |
| try: |
| # Step 1: gather metrics from device |
| port_metrics = \ |
| self.pm_metrics.collect_port_metrics(self.channel) |
| |
| # Step 2: prepare the KpiEvent for submission |
| # we can time-stamp them here (or could use time derived from OLT |
| ts = arrow.utcnow().timestamp |
| kpi_event = KpiEvent( |
| type=KpiEventType.slice, |
| ts=ts, |
| prefixes={ |
| # OLT NNI port |
| prefix + '.nni': MetricValuePairs( |
| metrics=port_metrics['nni']), |
| # OLT PON port |
| prefix + '.pon': MetricValuePairs( |
| metrics=port_metrics['pon']) |
| } |
| ) |
| |
| # Step 3: submit directly to the kafka bus |
| if kafka_cluster_proxy: |
| if isinstance(kpi_event, Message): |
| kpi_event = dumps(MessageToDict(kpi_event, True, True)) |
| kafka_cluster_proxy.send_message("voltha.kpis", kpi_event) |
| |
| except Exception as e: |
| log.exception('failed-to-submit-kpis', e=e) |
| |
| self.pm_metrics.start_collector(_collect) |
| |
| def stop_kpi_collection(self): |
| self.pm_metrics.stop_collector() |