| # Copyright (c) 2015 SONATA-NFV and Paderborn University | |
| # ALL RIGHTS RESERVED. | |
| # | |
| # 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. | |
| # | |
| # Neither the name of the SONATA-NFV, Paderborn University | |
| # nor the names of its contributors may be used to endorse or promote | |
| # products derived from this software without specific prior written | |
| # permission. | |
| # | |
| # This work has been performed in the framework of the SONATA project, | |
| # funded by the European Commission under Grant number 671517 through | |
| # the Horizon 2020 and 5G-PPP programmes. The authors would like to | |
| # acknowledge the contributions of their colleagues of the SONATA | |
| # partner consortium (www.sonata-nfv.eu). | |
| import logging | |
| from mininet.node import OVSSwitch | |
| import ast | |
| import time | |
| from prometheus_client import Gauge, CollectorRegistry, \ | |
| pushadd_to_gateway, delete_from_gateway | |
| import threading | |
| from subprocess import Popen | |
| import os | |
| import docker | |
| import json | |
| from copy import deepcopy | |
| logging.basicConfig() | |
| """ | |
| class to read openflow stats from the Ryu controller of the DCNetwork | |
| """ | |
| PUSHGATEWAY_PORT = 9091 | |
| # we cannot use port 8080 because ryu-ofrest api is already using that one | |
| CADVISOR_PORT = 8081 | |
| COOKIE_MASK = 0xffffffff | |
| class DCNetworkMonitor(): | |
| def __init__(self, net): | |
| self.net = net | |
| self.dockercli = docker.from_env() | |
| # pushgateway address | |
| self.pushgateway = 'localhost:{0}'.format(PUSHGATEWAY_PORT) | |
| # supported Prometheus metrics | |
| self.registry = CollectorRegistry() | |
| self.prom_tx_packet_count = Gauge('sonemu_tx_count_packets', 'Total number of packets sent', | |
| ['vnf_name', 'vnf_interface', 'flow_id'], registry=self.registry) | |
| self.prom_rx_packet_count = Gauge('sonemu_rx_count_packets', 'Total number of packets received', | |
| ['vnf_name', 'vnf_interface', 'flow_id'], registry=self.registry) | |
| self.prom_tx_byte_count = Gauge('sonemu_tx_count_bytes', 'Total number of bytes sent', | |
| ['vnf_name', 'vnf_interface', 'flow_id'], registry=self.registry) | |
| self.prom_rx_byte_count = Gauge('sonemu_rx_count_bytes', 'Total number of bytes received', | |
| ['vnf_name', 'vnf_interface', 'flow_id'], registry=self.registry) | |
| self.prom_metrics = {'tx_packets': self.prom_tx_packet_count, 'rx_packets': self.prom_rx_packet_count, | |
| 'tx_bytes': self.prom_tx_byte_count, 'rx_bytes': self.prom_rx_byte_count} | |
| # list of installed metrics to monitor | |
| # each entry can contain this data | |
| ''' | |
| { | |
| switch_dpid = 0 | |
| vnf_name = None | |
| vnf_interface = None | |
| previous_measurement = 0 | |
| previous_monitor_time = 0 | |
| metric_key = None | |
| mon_port = None | |
| } | |
| ''' | |
| self.monitor_lock = threading.Lock() | |
| self.monitor_flow_lock = threading.Lock() | |
| self.network_metrics = [] | |
| self.flow_metrics = [] | |
| self.skewmon_metrics = {} | |
| # start monitoring thread | |
| self.start_monitoring = True | |
| self.monitor_thread = threading.Thread(target=self.get_network_metrics) | |
| self.monitor_thread.start() | |
| self.monitor_flow_thread = threading.Thread( | |
| target=self.get_flow_metrics) | |
| self.monitor_flow_thread.start() | |
| # helper tools | |
| # cAdvisor, Prometheus pushgateway are started as external container, | |
| # to gather monitoring metric in son-emu | |
| self.pushgateway_process = self.start_PushGateway() | |
| self.cadvisor_process = self.start_cAdvisor() | |
| # first set some parameters, before measurement can start | |
| def setup_flow(self, vnf_name, vnf_interface=None, | |
| metric='tx_packets', cookie=0): | |
| flow_metric = {} | |
| # check if port is specified (vnf:port) | |
| if vnf_interface is None: | |
| # take first interface by default | |
| connected_sw = self.net.DCNetwork_graph.neighbors(vnf_name)[0] | |
| link_dict = self.net.DCNetwork_graph[vnf_name][connected_sw] | |
| vnf_interface = link_dict[0]['src_port_id'] | |
| flow_metric['vnf_name'] = vnf_name | |
| flow_metric['vnf_interface'] = vnf_interface | |
| vnf_switch = None | |
| for connected_sw in self.net.DCNetwork_graph.neighbors(vnf_name): | |
| link_dict = self.net.DCNetwork_graph[vnf_name][connected_sw] | |
| for link in link_dict: | |
| if link_dict[link]['src_port_id'] == vnf_interface: | |
| # found the right link and connected switch | |
| vnf_switch = connected_sw | |
| flow_metric['mon_port'] = link_dict[link]['dst_port_nr'] | |
| break | |
| if not vnf_switch: | |
| logging.exception("vnf switch of {0}:{1} not found!".format( | |
| vnf_name, vnf_interface)) | |
| return "vnf switch of {0}:{1} not found!".format( | |
| vnf_name, vnf_interface) | |
| try: | |
| # default port direction to monitor | |
| if metric is None: | |
| metric = 'tx_packets' | |
| next_node = self.net.getNodeByName(vnf_switch) | |
| if not isinstance(next_node, OVSSwitch): | |
| logging.info( | |
| "vnf: {0} is not connected to switch".format(vnf_name)) | |
| return | |
| flow_metric['previous_measurement'] = 0 | |
| flow_metric['previous_monitor_time'] = 0 | |
| flow_metric['switch_dpid'] = int(str(next_node.dpid), 16) | |
| flow_metric['metric_key'] = metric | |
| flow_metric['cookie'] = cookie | |
| self.monitor_flow_lock.acquire() | |
| self.flow_metrics.append(flow_metric) | |
| self.monitor_flow_lock.release() | |
| logging.info('Started monitoring flow:{3} {2} on {0}:{1}'.format( | |
| vnf_name, vnf_interface, metric, cookie)) | |
| return 'Started monitoring flow:{3} {2} on {0}:{1}'.format( | |
| vnf_name, vnf_interface, metric, cookie) | |
| except Exception as ex: | |
| logging.exception("setup_metric error.") | |
| return ex.message | |
| def stop_flow(self, vnf_name, vnf_interface=None, metric=None, cookie=0,): | |
| # check if port is specified (vnf:port) | |
| if vnf_interface is None and metric is not None: | |
| # take first interface by default | |
| connected_sw = self.net.DCNetwork_graph.neighbors(vnf_name)[0] | |
| link_dict = self.net.DCNetwork_graph[vnf_name][connected_sw] | |
| vnf_interface = link_dict[0]['src_port_id'] | |
| for flow_dict in self.flow_metrics: | |
| if flow_dict['vnf_name'] == vnf_name and flow_dict['vnf_interface'] == vnf_interface \ | |
| and flow_dict['metric_key'] == metric and flow_dict['cookie'] == cookie: | |
| self.monitor_flow_lock.acquire() | |
| self.flow_metrics.remove(flow_dict) | |
| # set metric to NaN | |
| self.prom_metrics[flow_dict['metric_key']]. \ | |
| labels(vnf_name=vnf_name, vnf_interface=vnf_interface, flow_id=cookie). \ | |
| set(float('nan')) | |
| delete_from_gateway( | |
| self.pushgateway, job='sonemu-SDNcontroller') | |
| self.monitor_flow_lock.release() | |
| logging.info('Stopped monitoring flow {3}: {2} on {0}:{1}'.format( | |
| vnf_name, vnf_interface, metric, cookie)) | |
| return 'Stopped monitoring flow {3}: {2} on {0}:{1}'.format( | |
| vnf_name, vnf_interface, metric, cookie) | |
| return 'Error stopping monitoring flow: {0} on {1}:{2}'.format( | |
| metric, vnf_name, vnf_interface) | |
| # first set some parameters, before measurement can start | |
| def setup_metric(self, vnf_name, vnf_interface=None, metric='tx_packets'): | |
| network_metric = {} | |
| # check if port is specified (vnf:port) | |
| if vnf_interface is None or vnf_interface == '': | |
| # take first interface by default | |
| connected_sw = self.net.DCNetwork_graph.neighbors(vnf_name)[0] | |
| link_dict = self.net.DCNetwork_graph[vnf_name][connected_sw] | |
| vnf_interface = link_dict[0]['src_port_id'] | |
| network_metric['vnf_name'] = vnf_name | |
| network_metric['vnf_interface'] = vnf_interface | |
| for connected_sw in self.net.DCNetwork_graph.neighbors(vnf_name): | |
| link_dict = self.net.DCNetwork_graph[vnf_name][connected_sw] | |
| for link in link_dict: | |
| if link_dict[link]['src_port_id'] == vnf_interface: | |
| # found the right link and connected switch | |
| network_metric['mon_port'] = link_dict[link]['dst_port_nr'] | |
| break | |
| if 'mon_port' not in network_metric: | |
| logging.exception("vnf interface {0}:{1} not found!".format( | |
| vnf_name, vnf_interface)) | |
| return "vnf interface {0}:{1} not found!".format( | |
| vnf_name, vnf_interface) | |
| try: | |
| # default port direction to monitor | |
| if metric is None: | |
| metric = 'tx_packets' | |
| vnf_switch = self.net.DCNetwork_graph.neighbors(str(vnf_name)) | |
| if len(vnf_switch) > 1: | |
| logging.info("vnf: {0} has multiple ports".format(vnf_name)) | |
| return | |
| elif len(vnf_switch) == 0: | |
| logging.info("vnf: {0} is not connected".format(vnf_name)) | |
| return | |
| else: | |
| vnf_switch = vnf_switch[0] | |
| next_node = self.net.getNodeByName(vnf_switch) | |
| if not isinstance(next_node, OVSSwitch): | |
| logging.info( | |
| "vnf: {0} is not connected to switch".format(vnf_name)) | |
| return | |
| network_metric['previous_measurement'] = 0 | |
| network_metric['previous_monitor_time'] = 0 | |
| network_metric['switch_dpid'] = int(str(next_node.dpid), 16) | |
| network_metric['metric_key'] = metric | |
| self.monitor_lock.acquire() | |
| self.network_metrics.append(network_metric) | |
| self.monitor_lock.release() | |
| logging.info('Started monitoring: {2} on {0}:{1}'.format( | |
| vnf_name, vnf_interface, metric)) | |
| return 'Started monitoring: {2} on {0}:{1}'.format( | |
| vnf_name, vnf_interface, metric) | |
| except Exception as ex: | |
| logging.exception("setup_metric error.") | |
| return ex.message | |
| def stop_metric(self, vnf_name, vnf_interface=None, metric=None): | |
| # check if port is specified (vnf:port) | |
| if vnf_interface is None and metric is not None: | |
| # take first interface by default | |
| connected_sw = self.net.DCNetwork_graph.neighbors(vnf_name)[0] | |
| link_dict = self.net.DCNetwork_graph[vnf_name][connected_sw] | |
| vnf_interface = link_dict[0]['src_port_id'] | |
| for metric_dict in deepcopy(self.network_metrics): | |
| if metric_dict['vnf_name'] == vnf_name and metric_dict['vnf_interface'] == vnf_interface \ | |
| and metric_dict['metric_key'] == metric: | |
| self.monitor_lock.acquire() | |
| self.network_metrics.remove(metric_dict) | |
| # set values to NaN, prometheus api currently does not support removal of metrics | |
| # self.prom_metrics[metric_dict['metric_key']].labels(vnf_name, vnf_interface).set(float('nan')) | |
| self.prom_metrics[metric_dict['metric_key']]. \ | |
| labels(vnf_name=vnf_name, vnf_interface=vnf_interface, flow_id=None). \ | |
| set(float('nan')) | |
| # this removes the complete metric, all labels... | |
| # 1 single monitor job for all metrics of the SDN controller | |
| # we can only remove from the pushgateway grouping keys(labels) which we have defined for the add_to_pushgateway | |
| # we can not specify labels from the metrics to be removed | |
| # if we need to remove the metrics seperatelty, we need to give | |
| # them a separate grouping key, and probably a diffferent | |
| # registry also | |
| delete_from_gateway( | |
| self.pushgateway, job='sonemu-SDNcontroller') | |
| self.monitor_lock.release() | |
| logging.info('Stopped monitoring: {2} on {0}:{1}'.format( | |
| vnf_name, vnf_interface, metric)) | |
| return 'Stopped monitoring: {2} on {0}:{1}'.format( | |
| vnf_name, vnf_interface, metric) | |
| # delete everything from this vnf | |
| elif metric_dict['vnf_name'] == vnf_name and vnf_interface is None and metric is None: | |
| self.monitor_lock.acquire() | |
| self.network_metrics.remove(metric_dict) | |
| logging.info('remove metric from monitor: vnf_name:{0} vnf_interface:{1} mon_port:{2}'.format( | |
| metric_dict['vnf_name'], metric_dict['vnf_interface'], metric_dict['mon_port'])) | |
| delete_from_gateway( | |
| self.pushgateway, job='sonemu-SDNcontroller') | |
| self.monitor_lock.release() | |
| continue | |
| if vnf_interface is None and metric is None: | |
| logging.info('Stopped monitoring vnf: {0}'.format(vnf_name)) | |
| return 'Stopped monitoring: {0}'.format(vnf_name) | |
| else: | |
| return 'Error stopping monitoring metric: {0} on {1}:{2}'.format( | |
| metric, vnf_name, vnf_interface) | |
| def get_flow_metrics(self): | |
| """ | |
| Get all metrics defined in the list and export it to Prometheus. | |
| """ | |
| while self.start_monitoring: | |
| self.monitor_flow_lock.acquire() | |
| for flow_dict in self.flow_metrics: | |
| data = {} | |
| data['cookie'] = flow_dict['cookie'] | |
| data['cookie_mask'] = COOKIE_MASK | |
| if 'tx' in flow_dict['metric_key']: | |
| data['match'] = {'in_port': flow_dict['mon_port']} | |
| elif 'rx' in flow_dict['metric_key']: | |
| data['out_port'] = flow_dict['mon_port'] | |
| # query Ryu | |
| ret = self.net.ryu_REST( | |
| 'stats/flow', dpid=flow_dict['switch_dpid'], data=data) | |
| if isinstance(ret, dict): | |
| flow_stat_dict = ret | |
| elif isinstance(ret, str): | |
| flow_stat_dict = ast.literal_eval(ret.rstrip()) | |
| else: | |
| flow_stat_dict = None | |
| logging.debug('received flow stat:{0} '.format(flow_stat_dict)) | |
| self.set_flow_metric(flow_dict, flow_stat_dict) | |
| try: | |
| if len(self.flow_metrics) > 0: | |
| pushadd_to_gateway( | |
| self.pushgateway, job='sonemu-SDNcontroller', registry=self.registry) | |
| except Exception as e: | |
| logging.warning( | |
| "Pushgateway not reachable: {0} {1}".format(Exception, e)) | |
| self.monitor_flow_lock.release() | |
| time.sleep(1) | |
| def get_network_metrics(self): | |
| while self.start_monitoring: | |
| self.monitor_lock.acquire() | |
| # group metrics by dpid to optimize the rest api calls | |
| dpid_list = [metric_dict['switch_dpid'] | |
| for metric_dict in self.network_metrics] | |
| dpid_set = set(dpid_list) | |
| for dpid in dpid_set: | |
| # query Ryu | |
| ret = self.net.ryu_REST('stats/port', dpid=dpid) | |
| if isinstance(ret, dict): | |
| port_stat_dict = ret | |
| elif isinstance(ret, str): | |
| port_stat_dict = ast.literal_eval(ret.rstrip()) | |
| else: | |
| port_stat_dict = None | |
| metric_list = [metric_dict for metric_dict in self.network_metrics | |
| if int(metric_dict['switch_dpid']) == int(dpid)] | |
| for metric_dict in metric_list: | |
| self.set_network_metric(metric_dict, port_stat_dict) | |
| try: | |
| if len(self.network_metrics) > 0: | |
| pushadd_to_gateway( | |
| self.pushgateway, job='sonemu-SDNcontroller', registry=self.registry) | |
| except Exception as e: | |
| logging.warning( | |
| "Pushgateway not reachable: {0} {1}".format(Exception, e)) | |
| self.monitor_lock.release() | |
| time.sleep(1) | |
| # add metric to the list to export to Prometheus, parse the Ryu port-stats | |
| # reply | |
| def set_network_metric(self, metric_dict, port_stat_dict): | |
| # vnf tx is the datacenter switch rx and vice-versa | |
| metric_key = self.switch_tx_rx(metric_dict['metric_key']) | |
| switch_dpid = metric_dict['switch_dpid'] | |
| vnf_name = metric_dict['vnf_name'] | |
| vnf_interface = metric_dict['vnf_interface'] | |
| previous_monitor_time = metric_dict['previous_monitor_time'] | |
| mon_port = metric_dict['mon_port'] | |
| for port_stat in port_stat_dict[str(switch_dpid)]: | |
| # ovs output also gives back 'LOCAL' port | |
| if port_stat['port_no'] == 'LOCAL': | |
| continue | |
| if int(port_stat['port_no']) == int(mon_port): | |
| port_uptime = port_stat['duration_sec'] + \ | |
| port_stat['duration_nsec'] * 10 ** (-9) | |
| this_measurement = int(port_stat[metric_key]) | |
| # set prometheus metric | |
| self.prom_metrics[metric_dict['metric_key']].\ | |
| labels(vnf_name=vnf_name, vnf_interface=vnf_interface, flow_id=None).\ | |
| set(this_measurement) | |
| # also the rate is calculated here, but not used for now | |
| # (rate can be easily queried from prometheus also) | |
| if previous_monitor_time <= 0 or previous_monitor_time >= port_uptime: | |
| metric_dict['previous_measurement'] = int( | |
| port_stat[metric_key]) | |
| metric_dict['previous_monitor_time'] = port_uptime | |
| # do first measurement | |
| # time.sleep(1) | |
| # self.monitor_lock.release() | |
| # rate cannot be calculated yet (need a first measurement) | |
| metric_dict['previous_measurement'] = this_measurement | |
| metric_dict['previous_monitor_time'] = port_uptime | |
| return | |
| logging.exception('metric {0} not found on {1}:{2}'.format( | |
| metric_key, vnf_name, vnf_interface)) | |
| logging.exception( | |
| 'monport:{0}, dpid:{1}'.format(mon_port, switch_dpid)) | |
| logging.exception( | |
| 'monitored network_metrics:{0}'.format(self.network_metrics)) | |
| logging.exception('port dict:{0}'.format(port_stat_dict)) | |
| return 'metric {0} not found on {1}:{2}'.format( | |
| metric_key, vnf_name, vnf_interface) | |
| def set_flow_metric(self, metric_dict, flow_stat_dict): | |
| # vnf tx is the datacenter switch rx and vice-versa | |
| metric_key = metric_dict['metric_key'] | |
| switch_dpid = metric_dict['switch_dpid'] | |
| vnf_name = metric_dict['vnf_name'] | |
| vnf_interface = metric_dict['vnf_interface'] | |
| cookie = metric_dict['cookie'] | |
| counter = 0 | |
| for flow_stat in flow_stat_dict[str(switch_dpid)]: | |
| if 'bytes' in metric_key: | |
| counter += flow_stat['byte_count'] | |
| elif 'packet' in metric_key: | |
| counter += flow_stat['packet_count'] | |
| # flow_uptime disabled for now (can give error) | |
| # flow_stat = flow_stat_dict[str(switch_dpid)][0] | |
| # flow_uptime = flow_stat['duration_sec'] + flow_stat['duration_nsec'] * 10 ** (-9) | |
| self.prom_metrics[metric_dict['metric_key']]. \ | |
| labels(vnf_name=vnf_name, vnf_interface=vnf_interface, flow_id=cookie). \ | |
| set(counter) | |
| def start_Prometheus(self, port=9090): | |
| # prometheus.yml configuration file is located in the same directory as | |
| # this file | |
| cmd = ["docker", | |
| "run", | |
| "--rm", | |
| "-p", "{0}:9090".format(port), | |
| "-v", "{0}/prometheus.yml:/etc/prometheus/prometheus.yml".format( | |
| os.path.dirname(os.path.abspath(__file__))), | |
| "-v", "{0}/profile.rules:/etc/prometheus/profile.rules".format( | |
| os.path.dirname(os.path.abspath(__file__))), | |
| "--name", "prometheus", | |
| "prom/prometheus" | |
| ] | |
| logging.info('Start Prometheus container {0}'.format(cmd)) | |
| return Popen(cmd) | |
| def start_PushGateway(self, port=PUSHGATEWAY_PORT): | |
| cmd = ["docker", | |
| "run", | |
| "-d", | |
| "-p", "{0}:9091".format(port), | |
| "--name", "pushgateway", | |
| "--label", 'com.containernet=""', | |
| "prom/pushgateway" | |
| ] | |
| logging.info('Start Prometheus Push Gateway container {0}'.format(cmd)) | |
| return Popen(cmd) | |
| def start_cAdvisor(self, port=CADVISOR_PORT): | |
| cmd = ["docker", | |
| "run", | |
| "--rm", | |
| "--volume=/:/rootfs:ro", | |
| "--volume=/var/run:/var/run:rw", | |
| "--volume=/sys:/sys:ro", | |
| "--volume=/var/lib/docker/:/var/lib/docker:ro", | |
| "--publish={0}:8080".format(port), | |
| "--name=cadvisor", | |
| "--label", 'com.containernet=""', | |
| "--detach=true", | |
| "google/cadvisor:latest", | |
| # "--storage_duration=1m0s", | |
| # "--allow_dynamic_housekeeping=true", | |
| # "--housekeeping_interval=1s", | |
| ] | |
| logging.info('Start cAdvisor container {0}'.format(cmd)) | |
| return Popen(cmd) | |
| def stop(self): | |
| # stop the monitoring thread | |
| self.start_monitoring = False | |
| self.monitor_thread.join() | |
| self.monitor_flow_thread.join() | |
| # these containers are used for monitoring but are started now outside | |
| # of son-emu | |
| if self.pushgateway_process is not None: | |
| logging.info('stopping pushgateway container') | |
| self._stop_container('pushgateway') | |
| if self.cadvisor_process is not None: | |
| logging.info('stopping cadvisor container') | |
| self._stop_container('cadvisor') | |
| def switch_tx_rx(self, metric=''): | |
| # when monitoring vnfs, the tx of the datacenter switch is actually the rx of the vnf | |
| # so we need to change the metric name to be consistent with the vnf rx | |
| # or tx | |
| if 'tx' in metric: | |
| metric = metric.replace('tx', 'rx') | |
| elif 'rx' in metric: | |
| metric = metric.replace('rx', 'tx') | |
| return metric | |
| def _stop_container(self, name): | |
| # container = self.dockercli.containers.get(name) | |
| # container.stop() | |
| # container.remove(force=True) | |
| # the only robust way to stop these containers is via Popen, it seems | |
| time.sleep(1) | |
| cmd = ['docker', 'rm', '-f', name] | |
| Popen(cmd) | |
| def update_skewmon(self, vnf_name, resource_name, action): | |
| ret = '' | |
| config_file_path = '/tmp/skewmon.cfg' | |
| configfile = open(config_file_path, 'a+') | |
| try: | |
| config = json.load(configfile) | |
| except BaseException: | |
| # not a valid json file or empty | |
| config = {} | |
| # initialize config file | |
| if len(self.skewmon_metrics) == 0: | |
| config = {} | |
| json.dump(config, configfile) | |
| configfile.close() | |
| docker_name = 'mn.' + vnf_name | |
| vnf_container = self.dockercli.containers.get(docker_name) | |
| key = resource_name + '_' + vnf_container.short_id | |
| vnf_id = vnf_container.id | |
| if action == 'start': | |
| # add a new vnf to monitor | |
| config[key] = dict(VNF_NAME=vnf_name, | |
| VNF_ID=vnf_id, | |
| VNF_METRIC=resource_name) | |
| ret = 'adding to skewness monitor: {0} {1} '.format( | |
| vnf_name, resource_name) | |
| logging.info(ret) | |
| elif action == 'stop': | |
| # remove vnf to monitor | |
| config.pop(key) | |
| ret = 'removing from skewness monitor: {0} {1} '.format( | |
| vnf_name, resource_name) | |
| logging.info(ret) | |
| self.skewmon_metrics = config | |
| configfile = open(config_file_path, 'w') | |
| json.dump(config, configfile) | |
| configfile.close() | |
| try: | |
| skewmon_container = self.dockercli.containers.get('skewmon') | |
| # remove container if config is empty | |
| if len(config) == 0: | |
| ret += 'stopping skewness monitor' | |
| logging.info('stopping skewness monitor') | |
| skewmon_container.remove(force=True) | |
| except docker.errors.NotFound: | |
| # start container if not running | |
| ret += 'starting skewness monitor' | |
| logging.info('starting skewness monitor') | |
| volumes = {'/sys/fs/cgroup': {'bind': '/sys/fs/cgroup', 'mode': 'ro'}, | |
| '/tmp/skewmon.cfg': {'bind': '/config.txt', 'mode': 'ro'}} | |
| self.dockercli.containers.run('skewmon', | |
| detach=True, | |
| volumes=volumes, | |
| labels=['com.containernet'], | |
| name='skewmon' | |
| ) | |
| # Wait a while for containers to be completely started | |
| started = False | |
| wait_time = 0 | |
| while not started: | |
| list1 = self.dockercli.containers.list( | |
| filters={'status': 'running', 'name': 'prometheus'}) | |
| if len(list1) >= 1: | |
| time.sleep(1) | |
| started = True | |
| if wait_time > 5: | |
| return 'skewmon not started' | |
| time.sleep(1) | |
| wait_time += 1 | |
| return ret | |
| def term(self, vnf_list=[]): | |
| """ | |
| Start a terminal window for the specified VNFs | |
| (start a terminal for all VNFs if vnf_list is empty) | |
| :param vnf_list: | |
| :return: | |
| """ | |
| if vnf_list is None: | |
| vnf_list = [] | |
| if not isinstance(vnf_list, list): | |
| vnf_list = str(vnf_list).split(',') | |
| vnf_list = map(str.strip, vnf_list) | |
| logging.info('vnf_list: {}'.format(vnf_list)) | |
| return self.start_xterm(vnf_list) | |
| # start an xterm for the specfified vnfs | |
| def start_xterm(self, vnf_names): | |
| # start xterm for all vnfs | |
| for vnf_name in vnf_names: | |
| terminal_cmd = "docker exec -it mn.{0} /bin/bash".format(vnf_name) | |
| cmd = ['xterm', '-xrm', 'XTerm*selectToClipboard: true', '-xrm', 'XTerm.vt100.allowTitleOps: false', | |
| '-T', vnf_name, | |
| '-e', terminal_cmd] | |
| Popen(cmd) | |
| ret = 'xterms started for {0}'.format(vnf_names) | |
| if len(vnf_names) == 0: | |
| ret = 'vnf list is empty, no xterms started' | |
| return ret |