UPLOAD_FOLDER = os.path.join(GK_STORAGE, "uploads/")
CATALOG_FOLDER = os.path.join(GK_STORAGE, "catalog/")
+# Enable Dockerfile build functionality
+BUILD_DOCKERFILE = False
+
# flag to indicate that we run without the emulator (only the bare API for integration testing)
GK_STANDALONE_MODE = False
+# should a new version of an image be pulled even if its available
+FORCE_PULL = True
+
class Gatekeeper(object):
self.nsd = None
self.vnfds = dict()
self.local_docker_files = dict()
+ self.remote_docker_image_urls = dict()
self.instances = dict()
def onboard(self):
self._load_package_descriptor()
self._load_nsd()
self._load_vnfd()
- self._load_docker_files()
# 3. prepare container images (e.g. download or build Dockerfile)
- self._build_images_from_dockerfiles()
- self._download_predefined_dockerimages()
-
+ if BUILD_DOCKERFILE:
+ self._load_docker_files()
+ self._build_images_from_dockerfiles()
+ else:
+ self._load_docker_urls()
+ self._pull_predefined_dockerimages()
LOG.info("On-boarded service: %r" % self.manifest.get("package_name"))
def start_service(self):
:return:
"""
LOG.info("Starting service %r" % self.uuid)
+
# 1. each service instance gets a new uuid to identify it
instance_uuid = str(uuid.uuid4())
# build a instances dict (a bit like a NSR :))
self.instances[instance_uuid] = dict()
self.instances[instance_uuid]["vnf_instances"] = list()
+
# 2. compute placement of this service instance (adds DC names to VNFDs)
if not GK_STANDALONE_MODE:
self._calculate_placement(FirstDcPlacement)
if not GK_STANDALONE_MODE:
vnfi = self._start_vnfd(vnfd)
self.instances[instance_uuid]["vnf_instances"].append(vnfi)
+
+ # 3. Configure the chaining of the network functions (currently only E-Line links supported)
+ 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")]
+
+ 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)
+
LOG.info("Service started. Instance id: %r" % instance_uuid)
return instance_uuid
# 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
- docker_name = vnfd.get("vnf_name")
+ 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)
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
- vnfi = target_dc.startCompute(GK.get_next_vnf_name(), image=docker_name, flavor_name="small")
+ 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
"""
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.
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("ns_name"))
+ LOG.debug("Loaded NSD: %r" % self.nsd.get("name"))
def _load_vnfd(self):
"""
self.package_content_path,
make_relative_path(pc.get("name")))
vnfd = load_yaml(vnfd_path)
- self.vnfds[vnfd.get("vnf_name")] = vnfd
- LOG.debug("Loaded VNFD: %r" % vnfd.get("vnf_name"))
+ self.vnfds[vnfd.get("name")] = vnfd
+ LOG.debug("Loaded VNFD: %r" % vnfd.get("name"))
def _load_docker_files(self):
"""
self.package_content_path,
make_relative_path(vm_image))
self.local_docker_files[k] = docker_path
- LOG.debug("Found Dockerfile: %r" % 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):
"""
LOG.debug("DOCKER BUILD: %s" % line)
LOG.info("Docker image created: %s" % k)
- def _download_predefined_dockerimages(self):
+ def _pull_predefined_dockerimages(self):
"""
If the package contains URLs to pre-build Docker images, we download them with this method.
"""
- # TODO implement this if we want to be able to download docker images instead of building them
- pass
+ 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):
"""
"""
try:
# get file contents
- print request.files
- son_file = request.files['file']
+ print(request.files)
+ # lets search for the package in the request
+ if "package" in request.files:
+ son_file = request.files["package"]
+ # elif "file" in request.files:
+ # son_file = request.files["file"]
+ else:
+ return {"service_uuid": None, "size": 0, "sha1": None, "error": "upload failed. file not found."}, 500
# generate a uuid to reference this package
service_uuid = str(uuid.uuid4())
file_hash = hashlib.sha1(str(son_file)).hexdigest()
return {"service_uuid": service_uuid, "size": size, "sha1": file_hash, "error": None}
except Exception as ex:
LOG.exception("Service package upload failed:")
- return {"service_uuid": None, "size": 0, "sha1": None, "error": "upload failed"}
+ return {"service_uuid": None, "size": 0, "sha1": None, "error": "upload failed"}, 500
def get(self):
"""
app.config['MAX_CONTENT_LENGTH'] = 512 * 1024 * 1024 # 512 MB max upload
api = fr.Api(app)
# define endpoints
-api.add_resource(Packages, '/api/packages')
-api.add_resource(Instantiations, '/api/instantiations')
+api.add_resource(Packages, '/packages')
+api.add_resource(Instantiations, '/instantiations')
def start_rest_api(host, port, datacenters=dict()):
projects / osm / vim-emu.git / blobdiff