X-Git-Url: https://osm.etsi.org/gitweb/?a=blobdiff_plain;f=src%2Femuvim%2Fdcemulator%2Fnode.py;h=3587aff9f8c957f338b1cf1f7722d928e70d8c3c;hb=86e64a08ca267ebd033ed87be5eef683d93e6c1d;hp=94d047bb8a08d83046197426e7e907cd42218a7a;hpb=1afc6ed0d6edb3df160867b087313ac8043813f2;p=osm%2Fvim-emu.git diff --git a/src/emuvim/dcemulator/node.py b/src/emuvim/dcemulator/node.py index 94d047b..3587aff 100755 --- a/src/emuvim/dcemulator/node.py +++ b/src/emuvim/dcemulator/node.py @@ -1,24 +1,47 @@ """ -Distributed Cloud Emulator (dcemulator) -(c) 2015 by Manuel Peuster +Copyright (c) 2015 SONATA-NFV and Paderborn University +ALL RIGHTS RESERVED. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. + +Neither the name of the SONATA-NFV [, ANY ADDITIONAL AFFILIATION] +nor the names of its contributors may be used to endorse or promote +products derived from this software without specific prior written +permission. + +This work has been performed in the framework of the SONATA project, +funded by the European Commission under Grant number 671517 through +the Horizon 2020 and 5G-PPP programmes. The authors would like to +acknowledge the contributions of their colleagues of the SONATA +partner consortium (www.sonata-nfv.eu). """ -from mininet.node import Docker +from mininet.node import Docker, OVSBridge from mininet.link import Link +from emuvim.dcemulator.resourcemodel import NotEnoughResourcesAvailable import logging -import time -import json -LOG = logging.getLogger("dcemulator") + +LOG = logging.getLogger("dcemulator.node") LOG.setLevel(logging.DEBUG) DCDPID_BASE = 1000 # start of switch dpid's used for data center switches - +EXTSAPDPID_BASE = 2000 # start of switch dpid's used for external SAP switches 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. @@ -37,9 +60,17 @@ class EmulatorCompute(Docker): Helper method to receive information about the virtual networks 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()) - for i in self.intfList()] + # get all links and find dc switch interface + networkStatusList = [] + for i in self.intfList(): + vnf_name = self.name + vnf_interface = str(i) + dc_port_name = self.datacenter.net.find_connected_dc_interface(vnf_name, vnf_interface) + # format list of tuples (name, Ip, MAC, isUp, status, dc_portname) + intf_dict = {'intf_name': str(i), 'ip': i.IP(), 'mac': i.MAC(), 'up': i.isUp(), 'status': i.status(), 'dc_portname': dc_port_name} + networkStatusList.append(intf_dict) + + return networkStatusList def getStatus(self): """ @@ -48,17 +79,22 @@ class EmulatorCompute(Docker): status = {} status["name"] = self.name status["network"] = self.getNetworkStatus() + status["docker_network"] = self.dcinfo['NetworkSettings']['IPAddress'] status["image"] = self.dimage - status["cpu_quota"] = self.cpu_quota - status["cpu_period"] = self.cpu_period - status["cpu_shares"] = self.cpu_shares - status["cpuset"] = self.cpuset - status["mem_limit"] = self.mem_limit - status["memswap_limit"] = self.memswap_limit + status["flavor_name"] = self.flavor_name + status["cpu_quota"] = self.resources.get('cpu_quota') + status["cpu_period"] = self.resources.get('cpu_period') + status["cpu_shares"] = self.resources.get('cpu_shares') + status["cpuset"] = self.resources.get('cpuset_cpus') + status["mem_limit"] = self.resources.get('mem_limit') + status["memswap_limit"] = self.resources.get('memswap_limit') status["state"] = self.dcli.inspect_container(self.dc)["State"] status["id"] = self.dcli.inspect_container(self.dc)["Id"] + status["short_id"] = self.dcli.inspect_container(self.dc)["Id"][:12] + status["hostname"] = self.dcli.inspect_container(self.dc)["Config"]['Hostname'] status["datacenter"] = (None if self.datacenter is None else self.datacenter.label) + return status @@ -79,7 +115,7 @@ class Datacenter(object): self.name = "dc%d" % Datacenter.DC_COUNTER Datacenter.DC_COUNTER += 1 # use this for user defined names that can be longer than self.name - self.label = label + self.label = label # dict to store arbitrary metadata (e.g. latitude and longitude) self.metadata = metadata # path to which resource information should be logged (e.g. for experiments). None = no logging @@ -99,6 +135,11 @@ class Datacenter(object): DCDPID_BASE += 1 return DCDPID_BASE + def _get_next_extSAP_dpid(self): + global EXTSAPDPID_BASE + EXTSAPDPID_BASE += 1 + return EXTSAPDPID_BASE + def create(self): """ Each data center is represented by a single switch to which @@ -114,7 +155,7 @@ class Datacenter(object): def start(self): pass - def startCompute(self, name, image=None, command=None, network=None, flavor_name="tiny"): + def startCompute(self, name, image=None, command=None, network=None, flavor_name="tiny", **params): """ Create a new container as compute resource and connect it to this data center. @@ -131,7 +172,7 @@ class Datacenter(object): 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): @@ -140,46 +181,48 @@ class Datacenter(object): if len(network) < 1: network.append({}) + # apply hard-set resource limits=0 + cpu_percentage = params.get('cpu_percent') + if cpu_percentage: + params['cpu_period'] = self.net.cpu_period + params['cpu_quota'] = self.net.cpu_period * float(cpu_percentage) + # create the container d = self.net.addDocker( "%s" % (name), dimage=image, dcmd=command, datacenter=self, - flavor_name=flavor_name + flavor_name=flavor_name, + environment = {'VNF_NAME':name}, + **params ) + + # 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) + # clean up network configuration (e.g. RTNETLINK does not allow ':' in intf names + if nw.get("id") is not None: + nw["id"] = self._clean_ifname(nw["id"]) + # 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): @@ -191,9 +234,14 @@ class Datacenter(object): 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( @@ -203,25 +251,20 @@ class Datacenter(object): 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 attachExternalSAP(self, sap_name, sap_net, **params): + # create SAP as separate OVS switch with an assigned ip address + sap_ip = str(sap_net[1]) + '/' + str(sap_net.prefixlen) + sap_switch = self.net.addExtSAP(sap_name, sap_ip, dpid=hex(self._get_next_extSAP_dpid())[2:], **params) + sap_switch.start() + + # link SAP to the DC switch + self.net.addLink(sap_switch, self.switch, cls=Link) + + # allow connection to the external internet through the host + self.net.addSAPNAT(sap_switch, str(sap_net)) + def listCompute(self): """ Return a list of all running containers assigned to this @@ -253,3 +296,19 @@ class Datacenter(object): self.net.rm_registrar.register(self, rm) LOG.info("Assigned RM: %r to DC: %r" % (rm, self)) + @staticmethod + def _clean_ifname(name): + """ + Cleans up given string to be a + RTNETLINK compatible interface name. + :param name: string + :return: string + """ + if name is None: + return "if0" + name = name.replace(":", "-") + name = name.replace(" ", "-") + name = name.replace(".", "-") + name = name.replace("_", "-") + return name +