"""
from mininet.node import Docker
from mininet.link import Link
+from emuvim.dcemulator.resourcemodel import NotEnoughResourcesAvailable
import logging
import time
import json
class EmulatorCompute(Docker):
"""
Emulator specific compute node class.
- Inherits from Dockernet's Docker host class.
+ Inherits from Containernet's Docker host class.
Represents a single container connected to a (logical)
data center.
We can add emulator specific helper functions to it.
this compute instance is connected to.
"""
# format list of tuples (name, Ip, MAC, isUp, status)
- return [(str(i), i.IP(), i.MAC(), i.isUp(), i.status())
+ return [{'intf_name':str(i), 'ip':i.IP(), 'mac':i.MAC(), 'up':i.isUp(), 'status':i.status()}
for i in self.intfList()]
def getStatus(self):
status = {}
status["name"] = self.name
status["network"] = self.getNetworkStatus()
+ status["docker_network"] = self.dcinfo['NetworkSettings']['IPAddress']
status["image"] = self.dimage
+ status["flavor_name"] = self.flavor_name
status["cpu_quota"] = self.cpu_quota
status["cpu_period"] = self.cpu_period
status["cpu_shares"] = self.cpu_shares
raise Exception("Container with name %s already exists." % name)
# set default parameter
if image is None:
- image = "ubuntu"
+ image = "ubuntu:trusty"
if network is None:
network = {} # {"ip": "10.0.0.254/8"}
if isinstance(network, dict):
# apply resource limits to container if a resource model is defined
if self._resource_model is not None:
- self._resource_model.allocate(d)
+ try:
+ self._resource_model.allocate(d)
+ self._resource_model.write_allocation_log(d, self.resource_log_path)
+ except NotEnoughResourcesAvailable as ex:
+ LOG.warning("Allocation of container %r was blocked by resource model." % name)
+ LOG.info(ex.message)
+ # ensure that we remove the container
+ self.net.removeDocker(name)
+ return None
# connect all given networks
# if no --net option is given, network = [{}], so 1 empty dict in the list
# this results in 1 default interface with a default ip address
for nw in network:
- # TODO we cannot use TCLink here (see: https://github.com/mpeuster/dockernet/issues/3)
- self.net.addLink(d, self.switch, params1=nw, cls=Link)
+ # TODO we cannot use TCLink here (see: https://github.com/mpeuster/containernet/issues/3)
+ self.net.addLink(d, self.switch, params1=nw, cls=Link, intfName1=nw.get('id'))
# do bookkeeping
self.containers[name] = d
-
- # TODO re-enable logging
- """
- # write resource log if a path is given
- if self.resource_log_path is not None:
- l = dict()
- l["t"] = time.time()
- l["name"] = name
- l["compute"] = d.getStatus()
- l["flavor_name"] = flavor_name
- l["action"] = "allocate"
- l["cpu_limit"] = cpu_limit
- l["mem_limit"] = mem_limit
- l["disk_limit"] = disk_limit
- l["rm_state"] = None if self._resource_model is None else self._resource_model.get_state_dict()
- # append to logfile
- with open(self.resource_log_path, "a") as f:
- f.write("%s\n" % json.dumps(l))
- """
return d # we might use UUIDs for naming later on
def stopCompute(self, name):
raise Exception("Container with name %s not found." % name)
LOG.debug("Stopping compute instance %r in data center %r" % (name, str(self)))
+ # stop the monitored metrics
+ if self.net.monitor_agent is not None:
+ self.net.monitor_agent.stop_metric(name)
+
# call resource model and free resources
if self._resource_model is not None:
self._resource_model.free(self.containers[name])
+ self._resource_model.write_free_log(self.containers[name], self.resource_log_path)
# remove links
self.net.removeLink(
self.net.removeDocker("%s" % (name))
del self.containers[name]
- # TODO re-enable logging
- """
- # write resource log if a path is given
- if self.resource_log_path is not None:
- l = dict()
- l["t"] = time.time()
- l["name"] = name
- l["flavor_name"] = None
- l["action"] = "free"
- l["cpu_limit"] = -1
- l["mem_limit"] = -1
- l["disk_limit"] = -1
- l["rm_state"] = None if self._resource_model is None else self._resource_model.get_state_dict()
- # append to logfile
- with open(self.resource_log_path, "a") as f:
- f.write("%s\n" % json.dumps(l))
- """
return True
def listCompute(self):