+ LOG.debug("eline_fwd_links %r" % eline_fwd_links)
+
+ 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(":")
+
+ LOG.debug("vnfds.keys: %r" % list(self.vnfds.iterkeys()))
+
+ if src_node in self.vnfds:
+ network = self.vnfds[src_node].get("dc").net # there should be a cleaner way to find the DCNetwork
+ ret = network.setChain(src_node, dst_node, vnf_src_interface=src_port, vnf_dst_interface=dst_port)
+ LOG.debug("setChain return: %r" % ret)
+
+ LOG.info("Service started. Instance id: %r" % instance_uuid)
+ return instance_uuid
+
+ def _start_vnfd(self, vnfd):
+ """
+ Start a single VNFD of this service
+ :param vnfd: vnfd descriptor dict
+ :return:
+ """
+ # iterate over all deployment units within each VNFDs
+ for u in vnfd.get("virtual_deployment_units"):
+ # 1. get the name of the docker image to start and the assigned DC
+ vnf_name = vnfd.get("name")
+ if vnf_name not in self.remote_docker_image_urls:
+ raise Exception("No image name for %r found. Abort." % vnf_name)
+ docker_name = self.remote_docker_image_urls.get(vnf_name)
+ target_dc = vnfd.get("dc")
+ # 2. perform some checks to ensure we can start the container
+ assert(docker_name is not None)
+ assert(target_dc is not None)
+ if not self._check_docker_image_exists(docker_name):
+ raise Exception("Docker image %r not found. Abort." % docker_name)
+ # 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
+ return vnfi
+
+ def _unpack_service_package(self):
+ """
+ unzip *.son file and store contents in CATALOG_FOLDER/services/<service_uuid>/
+ """
+ LOG.info("Unzipping: %r" % self.package_file_path)
+ with zipfile.ZipFile(self.package_file_path, "r") as z:
+ z.extractall(self.package_content_path)
+
+
+ def _load_package_descriptor(self):
+ """
+ Load the main package descriptor YAML and keep it as dict.
+ :return:
+ """
+ self.manifest = load_yaml(
+ os.path.join(
+ self.package_content_path, "META-INF/MANIFEST.MF"))
+
+ def _load_nsd(self):
+ """
+ Load the entry NSD YAML and keep it as dict.
+ :return:
+ """
+ if "entry_service_template" in self.manifest:
+ nsd_path = os.path.join(
+ self.package_content_path,
+ make_relative_path(self.manifest.get("entry_service_template")))
+ self.nsd = load_yaml(nsd_path)
+ LOG.debug("Loaded NSD: %r" % self.nsd.get("name"))
+
+ def _load_vnfd(self):
+ """
+ Load all VNFD YAML files referenced in MANIFEST.MF and keep them in dict.
+ :return:
+ """
+ if "package_content" in self.manifest:
+ for pc in self.manifest.get("package_content"):
+ if pc.get("content-type") == "application/sonata.function_descriptor":
+ vnfd_path = os.path.join(
+ self.package_content_path,
+ make_relative_path(pc.get("name")))
+ vnfd = load_yaml(vnfd_path)
+ self.vnfds[vnfd.get("name")] = vnfd
+ LOG.debug("Loaded VNFD: %r" % vnfd.get("name"))
+
+ def _load_docker_files(self):
+ """
+ Get all paths to Dockerfiles from VNFDs and store them in dict.
+ :return:
+ """
+ for k, v in self.vnfds.iteritems():
+ for vu in v.get("virtual_deployment_units"):
+ if vu.get("vm_image_format") == "docker":
+ vm_image = vu.get("vm_image")
+ docker_path = os.path.join(
+ self.package_content_path,
+ make_relative_path(vm_image))
+ self.local_docker_files[k] = docker_path
+ LOG.debug("Found Dockerfile (%r): %r" % (k, docker_path))
+
+ def _load_docker_urls(self):
+ """
+ Get all URLs to pre-build docker images in some repo.
+ :return:
+ """
+ for k, v in self.vnfds.iteritems():
+ for vu in v.get("virtual_deployment_units"):
+ if vu.get("vm_image_format") == "docker":
+ url = vu.get("vm_image")
+ if url is not None:
+ url = url.replace("http://", "")
+ self.remote_docker_image_urls[k] = url
+ LOG.debug("Found Docker image URL (%r): %r" % (k, self.remote_docker_image_urls[k]))
+
+ def _build_images_from_dockerfiles(self):
+ """
+ Build Docker images for each local Dockerfile found in the package: self.local_docker_files
+ """
+ if GK_STANDALONE_MODE:
+ return # do not build anything in standalone mode
+ dc = DockerClient()
+ LOG.info("Building %d Docker images (this may take several minutes) ..." % len(self.local_docker_files))
+ for k, v in self.local_docker_files.iteritems():
+ for line in dc.build(path=v.replace("Dockerfile", ""), tag=k, rm=False, nocache=False):
+ LOG.debug("DOCKER BUILD: %s" % line)
+ LOG.info("Docker image created: %s" % k)
+
+ def _pull_predefined_dockerimages(self):
+ """
+ If the package contains URLs to pre-build Docker images, we download them with this method.
+ """
+ dc = DockerClient()
+ for url in self.remote_docker_image_urls.itervalues():
+ if not FORCE_PULL: # only pull if not present (speedup for development)
+ if len(dc.images(name=url)) > 0:
+ LOG.debug("Image %r present. Skipping pull." % url)
+ continue
+ LOG.info("Pulling image: %r" % url)
+ dc.pull(url,
+ insecure_registry=True)
+
+ def _check_docker_image_exists(self, image_name):
+ """
+ Query the docker service and check if the given image exists
+ :param image_name: name of the docker image
+ :return:
+ """
+ return len(DockerClient().images(image_name)) > 0
+
+ def _calculate_placement(self, algorithm):
+ """
+ Do placement by adding the a field "dc" to
+ each VNFD that points to one of our
+ data center objects known to the gatekeeper.
+ """
+ assert(len(self.vnfds) > 0)
+ assert(len(GK.dcs) > 0)
+ # instantiate algorithm an place
+ p = algorithm()
+ p.place(self.nsd, self.vnfds, GK.dcs)
+ LOG.info("Using placement algorithm: %r" % p.__class__.__name__)
+ # lets print the placement result
+ for name, vnfd in self.vnfds.iteritems():
+ LOG.info("Placed VNF %r on DC %r" % (name, str(vnfd.get("dc"))))
+
+
+"""
+Some (simple) placement algorithms
+"""
+
+
+class FirstDcPlacement(object):
+ """
+ Placement: Always use one and the same data center from the GK.dcs dict.
+ """
+ def place(self, nsd, vnfds, dcs):
+ for name, vnfd in vnfds.iteritems():
+ vnfd["dc"] = list(dcs.itervalues())[0]