import time\r
from prometheus_client import start_http_server, Summary, Histogram, Gauge, Counter\r
import threading\r
-from subprocess import Popen\r
-from os import getcwd\r
+from subprocess import Popen, PIPE\r
+import os\r
\r
logging.basicConfig(level=logging.INFO)\r
\r
self.REST_api = 'http://{0}:{1}'.format(self.ip,self.port)\r
\r
# helper variables to calculate the metrics\r
- # TODO put these in a list to support multiple metrics simultaneously\r
- self.switch_dpid = 0\r
- self.vnf_name = None\r
- self.vnf_interface = None\r
- self.previous_measurement = 0\r
- self.previous_monitor_time = 0\r
- self.metric_key = None\r
- self.mon_port = None\r
-\r
-\r
# Start up the server to expose the metrics to Prometheus.\r
start_http_server(8000)\r
# supported Prometheus metrics\r
self.network_metrics = []\r
\r
# start monitoring thread\r
+ self.start_monitoring = True\r
self.monitor_thread = threading.Thread(target=self.get_network_metrics)\r
self.monitor_thread.start()\r
\r
# helper tools\r
- self.prometheus_process = None\r
- self.cAdvisor_process = None\r
-\r
+ self.prometheus_process = self.start_Prometheus()\r
+ self.cadvisor_process = self.start_cadvisor()\r
\r
# first set some parameters, before measurement can start\r
def setup_metric(self, vnf_name, vnf_interface=None, metric='tx_packets'):\r
\r
network_metric['vnf_name'] = vnf_name\r
network_metric['vnf_interface'] = vnf_interface\r
- #self.vnf_name = vnf_name\r
- #self.vnf_interface = vnf_interface\r
\r
for connected_sw in self.net.DCNetwork_graph.neighbors(vnf_name):\r
link_dict = self.net.DCNetwork_graph[vnf_name][connected_sw]\r
# found the right link and connected switch\r
# logging.info("{0},{1}".format(link_dict[link]['src_port_id'], vnf_source_interface))\r
network_metric['mon_port'] = link_dict[link]['dst_port']\r
- # self.mon_port = link_dict[link]['dst_port']\r
break\r
\r
if 'mon_port' not in network_metric:\r
\r
network_metric['previous_measurement'] = 0\r
network_metric['previous_monitor_time'] = 0\r
- #self.previous_measurement = 0\r
- #self.previous_monitor_time = 0\r
+\r
\r
network_metric['switch_dpid'] = int(str(next_node.dpid), 16)\r
network_metric['metric_key'] = metric\r
- #self.switch_dpid = int(str(next_node.dpid), 16)\r
- #self.metric_key = '{0}_{1}'.format(direction, metric)\r
+\r
\r
self.network_metrics.append(network_metric)\r
\r
logging.exception("get_rate error.")\r
return ex.message\r
\r
+ def remove_metric(self, vnf_name, vnf_interface, metric):\r
+ for metric_dict in self.network_metrics:\r
+ if metric_dict['vnf_name'] == vnf_name and metric_dict['vnf_interface'] == vnf_interface \\r
+ and metric_dict['metric'] == metric:\r
+ self.network_metrics.remove(metric_dict)\r
+ logging.info('Stopped monitoring: {2} on {0}:{1}'.format(vnf_name, vnf_interface, metric))\r
+ return 'Stopped monitoring: {2} on {0}:{1}'.format(vnf_name, vnf_interface, metric)\r
\r
- # get all metrics defined in the list\r
+\r
+ # get all metrics defined in the list and export it to Prometheus\r
def get_network_metrics(self):\r
- while True:\r
+ while self.start_monitoring:\r
# group metrics by dpid to optimize the rest api calls\r
dpid_list = [metric_dict['switch_dpid'] for metric_dict in self.network_metrics]\r
dpid_set = set(dpid_list)\r
\r
time.sleep(1)\r
\r
- # call this function repeatedly for streaming measurements\r
+ # add metric to the list to export to Prometheus, parse the Ryu port-stats reply\r
def set_network_metric(self, metric_dict, port_stat_dict):\r
-\r
- metric_key = metric_dict['metric_key']\r
+ # vnf tx is the datacenter switch rx and vice-versa\r
+ metric_key = self.switch_tx_rx(metric_dict['metric_key'])\r
switch_dpid = metric_dict['switch_dpid']\r
vnf_name = metric_dict['vnf_name']\r
vnf_interface = metric_dict['vnf_interface']\r
return 'metric {0} not found on {1}:{2}'.format(metric_key, vnf_name, vnf_interface)\r
\r
\r
- # call this function repeatedly for streaming measurements\r
- def get_rate(self, vnf_name, vnf_interface=None, direction='tx', metric='packets'):\r
-\r
- key = self.metric_key\r
-\r
- ret = self.REST_cmd('stats/port', self.switch_dpid)\r
- port_stat_dict = ast.literal_eval(ret)\r
- for port_stat in port_stat_dict[str(self.switch_dpid)]:\r
- if port_stat['port_no'] == self.mon_port:\r
- port_uptime = port_stat['duration_sec'] + port_stat['duration_nsec'] * 10 ** (-9)\r
- this_measurement = int(port_stat[key])\r
- #logging.info('packets:{0}'.format(this_measurement))\r
-\r
- # set prometheus metrics\r
- if metric == 'packets':\r
- self.prom_tx_packet_count.labels(self.vnf_name, self.vnf_interface).set(this_measurement)\r
- elif metric == 'bytes':\r
- self.prom_tx_byte_count.labels(self.vnf_name, self.vnf_interface).set(this_measurement)\r
-\r
- if self.previous_monitor_time <= 0 or self.previous_monitor_time >= port_uptime:\r
- self.previous_measurement = int(port_stat[key])\r
- self.previous_monitor_time = port_uptime\r
- # do first measurement\r
- time.sleep(1)\r
- byte_rate = self.get_rate(vnf_name, vnf_interface, direction, metric)\r
- return byte_rate\r
- else:\r
- time_delta = (port_uptime - self.previous_monitor_time)\r
- byte_rate = (this_measurement - self.previous_measurement) / float(time_delta)\r
- #logging.info('uptime:{2} delta:{0} rate:{1}'.format(time_delta,byte_rate,port_uptime))\r
-\r
- self.previous_measurement = this_measurement\r
- self.previous_monitor_time = port_uptime\r
- return byte_rate\r
-\r
- return ret\r
-\r
def REST_cmd(self, prefix, dpid):\r
url = self.REST_api + '/' + str(prefix) + '/' + str(dpid)\r
req = urllib2.Request(url)\r
return ret\r
\r
def start_Prometheus(self, port=9090):\r
+ # prometheus.yml configuration file is located in the same directory as this file\r
cmd = ["docker",\r
"run",\r
"--rm",\r
"-p", "{0}:9090".format(port),\r
- "-v", "{0}/prometheus.yml:/etc/prometheus/prometheus.yml".format(getcwd()),\r
+ "-v", "{0}/prometheus.yml:/etc/prometheus/prometheus.yml".format(os.path.dirname(os.path.abspath(__file__))),\r
"--name", "prometheus",\r
"prom/prometheus"\r
]\r
+ logging.info('Start Prometheus container {0}'.format(cmd))\r
+ return Popen(cmd)\r
\r
- self.prometheus_process = Popen(cmd)\r
-\r
- def start_cAdvisor(self, port=8090):\r
+ def start_cadvisor(self, port=8090):\r
cmd = ["docker",\r
"run",\r
"--rm",\r
"--name=cadvisor",\r
"google/cadvisor:latest"\r
]\r
- self.cAdvisor_process = Popen(cmd)\r
+ logging.info('Start cAdvisor container {0}'.format(cmd))\r
+ return Popen(cmd)\r
\r
def stop(self):\r
+ # stop the monitoring thread\r
+ self.start_monitoring = False\r
+ self.monitor_thread.join()\r
+\r
if self.prometheus_process is not None:\r
+ logging.info('stopping prometheus container')\r
self.prometheus_process.terminate()\r
self.prometheus_process.kill()\r
+ self._stop_container('prometheus')\r
+\r
+ if self.cadvisor_process is not None:\r
+ logging.info('stopping cadvisor container')\r
+ self.cadvisor_process.terminate()\r
+ self.cadvisor_process.kill()\r
+ self._stop_container('cadvisor')\r
+\r
+ def switch_tx_rx(self,metric=''):\r
+ # when monitoring vnfs, the tx of the datacenter switch is actually the rx of the vnf\r
+ # so we need to change the metric name to be consistent with the vnf rx or tx\r
+ if 'tx' in metric:\r
+ metric = metric.replace('tx','rx')\r
+ elif 'rx' in metric:\r
+ metric = metric.replace('rx','tx')\r
+\r
+ return metric\r
+\r
+ def _stop_container(self, name):\r
+ cmd = ["docker",\r
+ "stop",\r
+ name]\r
+ Popen(cmd).wait()\r
+\r
+ cmd = ["docker",\r
+ "rm",\r
+ name]\r
+ Popen(cmd).wait()\r
+\r
\r
- if self.cAdvisor_process is not None:\r
- self.cAdvisor_process.terminate()\r
- self.cAdvisor_process.kill()\r
projects / osm / vim-emu.git / blobdiff