+++ /dev/null
-"""\r
-Distributed Cloud Emulator (dcemulator)\r
-(c) 2015 by Manuel Peuster <manuel.peuster@upb.de>\r
-"""\r
-\r
-import logging\r
-import threading\r
-import zerorpc\r
-import site\r
-from subprocess import Popen\r
-\r
-logging.basicConfig(level=logging.INFO)\r
-\r
-\r
-class ZeroRpcApiEndpointDCNetwork(object):\r
- """\r
- Simple API endpoint that offers a zerorpc-based\r
- interface. This interface will be used by the\r
- default command line client.\r
- It can be used as a reference to implement\r
- REST interfaces providing the same semantics,\r
- like e.g. OpenStack compute API.\r
- """\r
-\r
- def __init__(self, listenip, port, DCNetwork=None):\r
- if DCNetwork :\r
- self.connectDCNetwork(DCNetwork)\r
- self.ip = listenip\r
- self.port = port\r
- logging.debug("Created monitoring API endpoint %s(%s:%d)" % (\r
- self.__class__.__name__, self.ip, self.port))\r
-\r
- # start Ryu controller with rest-API\r
- python_install_path = site.getsitepackages()[0]\r
- ryu_path = python_install_path + '/ryu/app/ofctl_rest.py'\r
- ryu_cmd = 'ryu-manager'\r
- self.ryu_process = Popen([ryu_cmd,ryu_path])\r
-\r
-\r
- def connectDCNetwork(self, net):\r
- self.net = net\r
- logging.info("Connected DCNetwork to API endpoint %s(%s:%d)" % (\r
- self.__class__.__name__, self.ip, self.port))\r
-\r
- def start(self):\r
- thread = threading.Thread(target=self._api_server_thread, args=())\r
- thread.daemon = True\r
- thread.start()\r
- logging.debug("Started API endpoint %s(%s:%d)" % (\r
- self.__class__.__name__, self.ip, self.port))\r
-\r
- def _api_server_thread(self):\r
- s = zerorpc.Server(DCNetworkApi(self.net))\r
- s.bind("tcp://%s:%d" % (self.ip, self.port))\r
- s.run()\r
-\r
- def stop(self):\r
- # stop ryu controller\r
- logging.info("Stop the monitoring API endpoint")\r
- self.ryu_process.terminate()\r
- #self.ryu_process.kill()\r
- return\r
-\r
-\r
-class DCNetworkApi(object):\r
- """\r
- Just pass through the corresponding request to the\r
- selected data center. Do not implement provisioning\r
- logic here because will will have multiple API\r
- endpoint implementations at the end.\r
- """\r
-\r
- def __init__(self, net):\r
- self.net = net\r
-\r
- def network_action_start(self, vnf_src_name, vnf_dst_name):\r
- # call DCNetwork method, not really datacenter specific API for now...\r
- # provided dc name needs to be part of API endpoint\r
- # no check if vnfs are really connected to this datacenter...\r
- logging.debug("RPC CALL: network chain start")\r
- try:\r
- c = self.net.setChain(\r
- vnf_src_name, vnf_dst_name)\r
- return str(c)\r
- except Exception as ex:\r
- logging.exception("RPC error.")\r
- return ex.message\r
-\r
- def network_action_stop(self, vnf_src_name, vnf_dst_name):\r
- # call DCNetwork method, not really datacenter specific API for now...\r
- # provided dc name needs to be part of API endpoint\r
- # no check if vnfs are really connected to this datacenter...\r
- logging.debug("RPC CALL: network chain stop")\r
- try:\r
- c = self.net.setChain(\r
- vnf_src_name, vnf_dst_name, cmd='del-flows')\r
- return c\r
- except Exception as ex:\r
- logging.exception("RPC error.")\r
- return ex.message\r
-\r
- # get egress(default) or ingress rate of a vnf\r
- def monitor_get_rate(self, vnf_name, direction):\r
- logging.debug("RPC CALL: get rate")\r
- try:\r
- c = self.net.monitor_agent.get_rate(vnf_name, direction)\r
- return c\r
- except Exception as ex:\r
- logging.exception("RPC error.")\r
- return ex.message\r
-\r
-\r