add skewness monitor control

diff --git a/src/emuvim/dcemulator/monitoring.py b/src/emuvim/dcemulator/monitoring.py
index 28c3df6..d0e45da 100755 (executable)
--- a/src/emuvim/dcemulator/monitoring.py
+++ b/src/emuvim/dcemulator/monitoring.py
@@ -37,6 +37,7 @@ import threading
 from subprocess import Popen\r
 import os\r
 import docker\r
+import json\r
 \r
 logging.basicConfig(level=logging.INFO)\r
 \r
@@ -89,6 +90,7 @@ class DCNetworkMonitor():
         self.monitor_flow_lock = threading.Lock()\r
         self.network_metrics = []\r
         self.flow_metrics = []\r
+        self.skewmon_metrics = {}\r
 \r
         # start monitoring thread\r
         self.start_monitoring = True\r
@@ -536,4 +538,71 @@ class DCNetworkMonitor():
         container = self.dockercli.containers.get(name)\r
         container.remove(force=True)\r
 \r
+    def update_skewmon(self, vnf_name, resource_name, action):\r
+\r
+        ret = ''\r
+\r
+        config_file_path = '/tmp/skewmon.cfg'\r
+        configfile = open(config_file_path, 'a+')\r
+        try:\r
+            config = json.load(configfile)\r
+        except:\r
+            #not a valid json file or empty\r
+            config = {}\r
+\r
+        #initialize config file\r
+        if len(self.skewmon_metrics) == 0:\r
+            config = {}\r
+        json.dump(config, configfile)\r
+        configfile.close()\r
+\r
+        docker_name = 'mn.' + vnf_name\r
+        vnf_container = self.dockercli.containers.get(docker_name)\r
+        key = resource_name + '_' + vnf_container.short_id\r
+        vnf_id = vnf_container.id\r
+\r
+        if action == 'start':\r
+            # add a new vnf to monitor\r
+            config[key] = dict(VNF_NAME=vnf_name,\r
+                                VNF_ID=vnf_id,\r
+                                VNF_METRIC=resource_name)\r
+            ret = 'adding to skewness monitor: {0} {1} '.format(vnf_name, resource_name)\r
+            logging.info(ret)\r
+        elif action == 'stop':\r
+            # remove vnf to monitor\r
+            config.pop(key)\r
+            ret = 'removing from skewness monitor: {0} {1} '.format(vnf_name, resource_name)\r
+            logging.info(ret)\r
+\r
+        self.skewmon_metrics = config\r
+        configfile = open(config_file_path, 'w')\r
+        json.dump(config, configfile)\r
+        configfile.close()\r
+\r
+        try:\r
+            skewmon_container = self.dockercli.containers.get('skewmon')\r
+\r
+            # remove container if config is empty\r
+            if len(config) == 0:\r
+                ret += 'stopping skewness monitor'\r
+                logging.info('stopping skewness monitor')\r
+                skewmon_container.remove(force=True)\r
+\r
+        except docker.errors.NotFound:\r
+            # start container if not running\r
+            ret += 'starting skewness monitor'\r
+            logging.info('starting skewness monitor')\r
+            volumes = {'/sys/fs/cgroup':{'bind':'/sys/fs/cgroup', 'mode':'ro'},\r
+                       '/tmp/skewmon.cfg':{'bind':'/config.txt', 'mode':'ro'}}\r
+            self.dockercli.containers.run('skewmon',\r
+                                          detach=True,\r
+                                          volumes=volumes,\r
+                                          labels=['com.containernet'],\r
+                                          name='skewmon'\r
+                                          )\r
+        return ret\r
+\r
+\r
+\r
+\r
 \r