X-Git-Url: https://osm.etsi.org/gitweb/?a=blobdiff_plain;f=src%2Femuvim%2Fdcemulator%2Fmonitoring.py;h=7fa5e189a2edceffc0ecafdcf88c393d0bfef974;hb=7da4970fbf9548d755decc1361d5d9d548cc0f3c;hp=094c09b352d513a7d0a63966b3bd4d2d490ab674;hpb=3eef9fde234a4379d80e0435bac9ce650407a895;p=osm%2Fvim-emu.git diff --git a/src/emuvim/dcemulator/monitoring.py b/src/emuvim/dcemulator/monitoring.py index 094c09b..7fa5e18 100755 --- a/src/emuvim/dcemulator/monitoring.py +++ b/src/emuvim/dcemulator/monitoring.py @@ -4,23 +4,100 @@ import urllib2 import logging from mininet.node import OVSSwitch import ast +import time +from prometheus_client import start_http_server, Summary, Histogram, Gauge, Counter +import threading +from subprocess import Popen, PIPE +import os + logging.basicConfig(level=logging.INFO) """ -class to read openflow stats from the Ryu controller of the DCNEtwork +class to read openflow stats from the Ryu controller of the DCNetwork """ class DCNetworkMonitor(): def __init__(self, net): self.net = net - # link to REST_API + # link to Ryu REST_API self.ip = '0.0.0.0' self.port = '8080' self.REST_api = 'http://{0}:{1}'.format(self.ip,self.port) + # helper variables to calculate the metrics + # Start up the server to expose the metrics to Prometheus. + start_http_server(8000) + # supported Prometheus metrics + self.prom_tx_packet_count = Gauge('sonemu_tx_count_packets', 'Total number of packets sent', + ['vnf_name', 'vnf_interface']) + self.prom_rx_packet_count = Gauge('sonemu_rx_count_packets', 'Total number of packets received', + ['vnf_name', 'vnf_interface']) + self.prom_tx_byte_count = Gauge('sonemu_tx_count_bytes', 'Total number of bytes sent', + ['vnf_name', 'vnf_interface']) + self.prom_rx_byte_count = Gauge('sonemu_rx_count_bytes', 'Total number of bytes received', + ['vnf_name', 'vnf_interface']) + + 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.network_metrics = [] + + # start monitoring thread + self.start_monitoring = True + self.monitor_thread = threading.Thread(target=self.get_network_metrics) + self.monitor_thread.start() + + # helper tools + self.prometheus_process = self.start_Prometheus() + self.cadvisor_process = self.start_cadvisor() + + # 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: + # 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: + # logging.info("{0},{1}".format(link_dict[link],vnf_interface)) + if link_dict[link]['src_port_id'] == vnf_interface: + # found the right link and connected switch + # logging.info("{0},{1}".format(link_dict[link]['src_port_id'], vnf_source_interface)) + network_metric['mon_port'] = link_dict[link]['dst_port'] + 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) - def get_rate(self, vnf_name, direction='tx'): 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: @@ -33,30 +110,168 @@ class DCNetworkMonitor(): vnf_switch = vnf_switch[0] next_node = self.net.getNodeByName(vnf_switch) - if not isinstance( next_node, OVSSwitch ): + if not isinstance(next_node, OVSSwitch): logging.info("vnf: {0} is not connected to switch".format(vnf_name)) return - mon_port = self.net.DCNetwork_graph[vnf_name][vnf_switch]['dst_port'] - switch_dpid = x = int(str(next_node.dpid),16) + network_metric['previous_measurement'] = 0 + network_metric['previous_monitor_time'] = 0 - ret = self.REST_cmd('stats/port', switch_dpid) - port_stat_dict = ast.literal_eval(ret) - for port_stat in port_stat_dict[str(switch_dpid)]: - if port_stat['port_no'] == mon_port: - return port_stat - break - return ret + network_metric['switch_dpid'] = int(str(next_node.dpid), 16) + network_metric['metric_key'] = metric + + + self.network_metrics.append(network_metric) + + 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("get_txrate error.") + logging.exception("get_rate error.") return ex.message + def remove_metric(self, vnf_name, vnf_interface, metric): + for metric_dict in self.network_metrics: + if metric_dict['vnf_name'] == vnf_name and metric_dict['vnf_interface'] == vnf_interface \ + and metric_dict['metric'] == metric: + self.network_metrics.remove(metric_dict) + 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) + + + # get all metrics defined in the list and export it to Prometheus + def get_network_metrics(self): + while self.start_monitoring: + # 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.REST_cmd('stats/port', dpid) + port_stat_dict = ast.literal_eval(ret) + + metric_list = [metric_dict for metric_dict in self.network_metrics + if int(metric_dict['switch_dpid'])==int(dpid)] + #logging.info('1set prom packets:{0} '.format(self.network_metrics)) + for metric_dict in metric_list: + self.set_network_metric(metric_dict, port_stat_dict) + + 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_measurement = metric_dict['previous_measurement'] + previous_monitor_time = metric_dict['previous_monitor_time'] + mon_port = metric_dict['mon_port'] + + for port_stat in port_stat_dict[str(switch_dpid)]: + 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]) + #logging.info('set prom packets:{0} {1}:{2}'.format(this_measurement, vnf_name, vnf_interface)) + + # set prometheus metric + self.prom_metrics[metric_key].labels(vnf_name, vnf_interface).set(this_measurement) + + 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 + #logging.info('first measurement') + time.sleep(1) + byte_rate = self.get_network_metrics() + return byte_rate + else: + time_delta = (port_uptime - metric_dict['previous_monitor_time']) + byte_rate = (this_measurement - metric_dict['previous_measurement']) / float(time_delta) + # logging.info('uptime:{2} delta:{0} rate:{1}'.format(time_delta,byte_rate,port_uptime)) + + metric_dict['previous_measurement'] = this_measurement + metric_dict['previous_monitor_time'] = port_uptime + return byte_rate + + logging.exception('metric {0} not found on {1}:{2}'.format(metric_key, vnf_name, vnf_interface)) + return 'metric {0} not found on {1}:{2}'.format(metric_key, vnf_name, vnf_interface) def REST_cmd(self, prefix, dpid): url = self.REST_api + '/' + str(prefix) + '/' + str(dpid) req = urllib2.Request(url) ret = urllib2.urlopen(req).read() - return ret \ No newline at end of file + return ret + + 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__))), + "--name", "prometheus", + "prom/prometheus" + ] + logging.info('Start Prometheus container {0}'.format(cmd)) + return Popen(cmd) + + def start_cadvisor(self, port=8090): + 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", + "google/cadvisor:latest" + ] + 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() + + if self.prometheus_process is not None: + logging.info('stopping prometheus container') + self.prometheus_process.terminate() + self.prometheus_process.kill() + self._stop_container('prometheus') + + if self.cadvisor_process is not None: + logging.info('stopping cadvisor container') + self.cadvisor_process.terminate() + self.cadvisor_process.kill() + 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): + cmd = ["docker", + "stop", + name] + Popen(cmd).wait() + + cmd = ["docker", + "rm", + name] + Popen(cmd).wait() + +