"""\r
\r
import logging\r
+import sys\r
from mininet.node import OVSSwitch\r
import ast\r
import time\r
class to read openflow stats from the Ryu controller of the DCNetwork\r
"""\r
\r
+PUSHGATEWAY_PORT = 9091\r
+# we cannot use port 8080 because ryu-ofrest api is already using that one\r
+CADVISOR_PORT = 8081\r
+\r
class DCNetworkMonitor():\r
def __init__(self, net):\r
self.net = net\r
\r
- # TODO: these global variables should be part of a config file?\r
- '''\r
- # prometheus is started outside of son-emu\r
- prometheus_ip = '127.0.0.1'\r
- prometheus_port = '9090'\r
- self.prometheus_REST_api = 'http://{0}:{1}'.format(prometheus_ip, prometheus_port)\r
- '''\r
- # helper variables to calculate the metrics\r
- # pushgateway is started outside of son-emu and son-emu is started with net=host\r
- # so localhost:9091 works\r
- self.pushgateway = 'localhost:9091'\r
- # when sdk is started with docker-compose, we could use\r
- # self.pushgateway = 'pushgateway:9091'\r
+ # pushgateway address\r
+ self.pushgateway = 'localhost:{0}'.format(PUSHGATEWAY_PORT)\r
\r
# supported Prometheus metrics\r
self.registry = CollectorRegistry()\r
self.monitor_flow_thread.start()\r
\r
# helper tools\r
- # cAdvisor, Prometheus pushgateway and DB are started as external container, outside of son-emu\r
+ # cAdvisor, Prometheus pushgateway are started as external container, to gather monitoring metric in son-emu\r
+ self.pushgateway_process = self.start_PushGateway()\r
+ self.cadvisor_process = self.start_cAdvisor()\r
\r
\r
# first set some parameters, before measurement can start\r
\r
# query Ryu\r
ret = self.net.ryu_REST('stats/flow', dpid=flow_dict['switch_dpid'], data=data)\r
- flow_stat_dict = ast.literal_eval(ret)\r
+ if isinstance(ret, dict):\r
+ flow_stat_dict = ret\r
+ elif isinstance(ret, basestring):\r
+ flow_stat_dict = ast.literal_eval(ret.rstrip())\r
+ else:\r
+ flow_stat_dict = None\r
+\r
logging.debug('received flow stat:{0} '.format(flow_stat_dict))\r
\r
self.set_flow_metric(flow_dict, flow_stat_dict)\r
previous_monitor_time = metric_dict['previous_monitor_time']\r
cookie = metric_dict['cookie']\r
\r
- # TODO aggregate all found flow stats\r
- #flow_stat = flow_stat_dict[str(switch_dpid)][0]\r
- #if 'bytes' in metric_key:\r
- # counter = flow_stat['byte_count']\r
- #elif 'packet' in metric_key:\r
- # counter = flow_stat['packet_count']\r
-\r
counter = 0\r
for flow_stat in flow_stat_dict[str(switch_dpid)]:\r
if 'bytes' in metric_key:\r
self.prom_metrics[metric_dict['metric_key']]. \\r
labels({'vnf_name': vnf_name, 'vnf_interface': vnf_interface, 'flow_id': cookie}). \\r
set(counter)\r
- pushadd_to_gateway(self.pushgateway, job='sonemu-SDNcontroller', registry=self.registry)\r
+ try:\r
+ pushadd_to_gateway(self.pushgateway, job='sonemu-SDNcontroller', registry=self.registry)\r
+ except Exception, e:\r
+ logging.warning("Pushgateway not reachable: {0} {1}".format(Exception, e))\r
\r
\r
def start_Prometheus(self, port=9090):\r
logging.info('Start Prometheus container {0}'.format(cmd))\r
return Popen(cmd)\r
\r
- def start_PushGateway(self, port=9091):\r
+ def start_PushGateway(self, port=PUSHGATEWAY_PORT):\r
cmd = ["docker",\r
"run",\r
"-d",\r
logging.info('Start Prometheus Push Gateway container {0}'.format(cmd))\r
return Popen(cmd)\r
\r
- def start_cadvisor(self, port=8090):\r
+ def start_cAdvisor(self, port=CADVISOR_PORT):\r
cmd = ["docker",\r
"run",\r
"--rm",\r
self.prometheus_process.terminate()\r
self.prometheus_process.kill()\r
self._stop_container('prometheus')\r
-\r
+ '''\r
if self.pushgateway_process is not None:\r
logging.info('stopping pushgateway container')\r
self.pushgateway_process.terminate()\r
self.cadvisor_process.terminate()\r
self.cadvisor_process.kill()\r
self._stop_container('cadvisor')\r
- '''\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