+import logging
+import threading
+from flask import Flask, request
+from flask_restful import Resource,Api
+import json
+
+
+
+logging.basicConfig(level=logging.INFO)
+
+
+dcs = {}
+
+class RestApiEndpoint(object):
+
+ """
+ Simple API endpoint that offers a REST
+ interface. This interface will be used by the
+ default command line client.
+ """
+ global dcs
+
+ def __init__(self, listenip, port):
+ self.ip = listenip
+ self.port = port
+
+ # setup Flask
+ self.app = Flask(__name__)
+ self.api = Api(self.app)
+
+ # setup endpoints
+ self.api.add_resource(ComputeList, "/restapi/compute/<dc_label>")
+ self.api.add_resource(ComputeStart, "/restapi/compute/<dc_label>/<compute_name>/start")
+ self.api.add_resource(ComputeStop, "/restapi/compute/<dc_label>/<compute_name>/stop")
+ self.api.add_resource(ComputeStatus, "/restapi/compute/<dc_label>/<compute_name>")
+ self.api.add_resource(DatacenterList, "/restapi/datacenter")
+ self.api.add_resource(DatacenterStatus, "/restapi/datacenter/<dc_label>")
+
+ logging.debug("Created API endpoint %s(%s:%d)" % (self.__class__.__name__, self.ip, self.port))
+
+
+ def connectDatacenter(self, dc):
+ dcs[dc.label] = dc
+ logging.info("Connected DC(%s) to API endpoint %s(%s:%d)" % (dc.label, self.__class__.__name__, self.ip, self.port))
+
+ def start(self):
+ thread = threading.Thread(target= self._start_flask, args=())
+ thread.daemon = True
+ thread.start()
+ logging.info("Started API endpoint @ http://%s:%d" % (self.ip, self.port))
+
+
+ def _start_flask(self):
+ self.app.run(self.ip, self.port, debug=True, use_reloader=False)
+
+
+class ComputeStart(Resource):
+ """
+ Start a new compute instance: A docker container (note: zerorpc does not support keyword arguments)
+ :param dc_label: name of the DC
+ :param compute_name: compute container name
+ :param image: image name
+ :param command: command to execute
+ :param network: list of all interface of the vnf, with their parameters (id=id1,ip=x.x.x.x/x),...
+ :return: networks list({"id":"input","ip": "10.0.0.254/8"}, {"id":"output","ip": "11.0.0.254/24"})
+ """
+ global dcs
+
+ def put(self, dc_label, compute_name):
+ logging.debug("API CALL: compute start")
+ try:
+
+ image = json.loads(request.json).get("image")
+ network = json.loads(request.json).get("network")
+ command = json.loads(request.json).get("docker_command")
+ c = dcs.get(dc_label).startCompute(
+ compute_name, image= image, command= command, network= network)
+ # return docker inspect dict
+ return c. getStatus(), 200
+ except Exception as ex:
+ logging.exception("API error.")
+ return ex.message, 500
+
+class ComputeStop(Resource):
+
+ global dcs
+
+ def get(self, dc_label, compute_name):
+ logging.debug("API CALL: compute stop")
+ try:
+ return dcs.get(dc_label).stopCompute(compute_name), 200
+ except Exception as ex:
+ logging.exception("API error.")
+ return ex.message,500
+
+
+class ComputeList(Resource):
+
+ global dcs
+
+ def get(self, dc_label):
+ logging.debug("API CALL: compute list")
+ try:
+ if dc_label == 'None':
+ # return list with all compute nodes in all DCs
+ all_containers = []
+ for dc in dcs.itervalues():
+ all_containers += dc.listCompute()
+ return [(c.name, c.getStatus()) for c in all_containers], 200
+ else:
+ # return list of compute nodes for specified DC
+ return [(c.name, c.getStatus())
+ for c in dcs.get(dc_label).listCompute()], 200
+ except Exception as ex:
+ logging.exception("API error.")
+ return ex.message, 500
+
+
+class ComputeStatus(Resource):
+
+ global dcs
+
+ def get(self, dc_label, compute_name):
+
+ logging.debug("API CALL: compute list")
+
+ try:
+ return dcs.get(dc_label).containers.get(compute_name).getStatus(), 200
+ except Exception as ex:
+ logging.exception("API error.")
+ return ex.message, 500
+
+class DatacenterList(Resource):
+
+ global dcs
+
+ def get(self):
+ logging.debug("API CALL: datacenter list")
+ try:
+ return [d.getStatus() for d in dcs.itervalues()], 200
+ except Exception as ex:
+ logging.exception("API error.")
+ return ex.message, 500
+
+class DatacenterStatus(Resource):
+
+ global dcs
+
+ def get(self, dc_label):
+ logging.debug("API CALL: datacenter status")
+ try:
+ return dcs.get(dc_label).getStatus(), 200
+ except Exception as ex:
+ logging.exception("API error.")
+ return ex.message, 500