from docker import Client as DockerClient
from flask import Flask, request
import flask_restful as fr
+from collections import defaultdict
logging.basicConfig()
LOG = logging.getLogger("sonata-dummy-gatekeeper")
GK_STANDALONE_MODE = False
# should a new version of an image be pulled even if its available
-FORCE_PULL = True
-
+FORCE_PULL = False
class Gatekeeper(object):
self.local_docker_files = dict()
self.remote_docker_image_urls = dict()
self.instances = dict()
+ self.vnfname2num = dict()
def onboard(self):
"""
self.instances[instance_uuid]["vnf_instances"].append(vnfi)
# 3. Configure the chaining of the network functions (currently only E-Line links supported)
+ nfid2name = defaultdict(lambda :"NotExistingNode",
+ reduce(lambda x,y: dict(x, **y),
+ map(lambda d:{d["vnf_id"]:d["vnf_name"]},
+ self.nsd["network_functions"])))
+
vlinks = self.nsd["virtual_links"]
fwd_links = self.nsd["forwarding_graphs"][0]["constituent_virtual_links"]
eline_fwd_links = [l for l in vlinks if (l["id"] in fwd_links) and (l["connectivity_type"] == "E-Line")]
+ cookie = 1 # not clear why this is needed - to check with Steven
for link in eline_fwd_links:
src_node, src_port = link["connection_points_reference"][0].split(":")
dst_node, dst_port = link["connection_points_reference"][1].split(":")
- if src_node in self.vnfds:
- network = self.vnfds[src_node].get("dc").net # there should be a cleaner way to find the DCNetwork
- network.setChain(src_node, dst_node, vnf_src_interface=src_port, vnf_dst_interface=dst_port)
+ srcname = nfid2name[src_node]
+ dstname = nfid2name[dst_node]
+ LOG.debug("src name: "+srcname+" dst name: "+dstname)
+
+ if (srcname in self.vnfds) and (dstname in self.vnfds) :
+ network = self.vnfds[srcname].get("dc").net # there should be a cleaner way to find the DCNetwork
+ src_vnf = self.vnfname2num[srcname]
+ dst_vnf = self.vnfname2num[dstname]
+ ret = network.setChain(src_vnf, dst_vnf, vnf_src_interface=src_port, vnf_dst_interface=dst_port, bidirectional = True, cmd="add-flow", cookie = cookie)
+ cookie += 1
+
+ # 4. run the emulator specific entrypoint scripts in the VNFIs of this service instance
+ self._trigger_emulator_start_scripts_in_vnfis(self.instances[instance_uuid]["vnf_instances"])
LOG.info("Service started. Instance id: %r" % instance_uuid)
return instance_uuid
# 3. do the dc.startCompute(name="foobar") call to run the container
# TODO consider flavors, and other annotations
intfs = vnfd.get("connection_points")
- vnfi = target_dc.startCompute(GK.get_next_vnf_name(), network=intfs, image=docker_name, flavor_name="small")
- # 6. store references to the compute objects in self.instances
+ self.vnfname2num[vnf_name] = GK.get_next_vnf_name()
+ LOG.info("VNF "+vnf_name+" mapped to "+self.vnfname2num[vnf_name]+" on dc "+str(vnfd.get("dc")))
+ vnfi = target_dc.startCompute(self.vnfname2num[vnf_name], network=intfs, image=docker_name, flavor_name="small")
return vnfi
+ def _trigger_emulator_start_scripts_in_vnfis(self, vnfi_list):
+ for vnfi in vnfi_list:
+ config = vnfi.dcinfo.get("Config", dict())
+ env = config.get("Env", list())
+ for env_var in env:
+ if "SON_EMU_CMD=" in env_var:
+ cmd = str(env_var.split("=")[1])
+ LOG.info("Executing entrypoint script in %r: %r" % (vnfi.name, cmd))
+ vnfi.cmdPrint(cmd)
+
def _unpack_service_package(self):
"""
unzip *.son file and store contents in CATALOG_FOLDER/services/<service_uuid>/