models/openmano/python/rift/openmano/rift2openmano.py

   1 #!/usr/bin/env python3
   2
   3 #
   4 #   Copyright 2016 RIFT.IO Inc
   5 #
   6 #   Licensed under the Apache License, Version 2.0 (the "License");
   7 #   you may not use this file except in compliance with the License.
   8 #   You may obtain a copy of the License at
   9 #
  10 #       http://www.apache.org/licenses/LICENSE-2.0
  11 #
  12 #   Unless required by applicable law or agreed to in writing, software
  13 #   distributed under the License is distributed on an "AS IS" BASIS,
  14 #   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15 #   See the License for the specific language governing permissions and
  16 #   limitations under the License.
  17 #
  18
  19 import argparse
  20 import collections
  21 import logging
  22 import math
  23 import os
  24 import sys
  25 import tempfile
  26 import yaml
  27
  28 import gi
  29 gi.require_version('RwYang', '1.0')
  30 gi.require_version('RwVnfdYang', '1.0')
  31 gi.require_version('RwNsdYang', '1.0')
  32
  33 from gi.repository import (
  34     RwYang,
  35     RwVnfdYang,
  36     RwNsdYang,
  37     )
  38
  39 import rift.package.store
  40 import rift.package.cloud_init
  41
  42 logger = logging.getLogger("rift2openmano.py")
  43
  44
  45 class VNFNotFoundError(Exception):
  46     pass
  47
  48
  49 class RiftNSD(object):
  50     model = RwYang.Model.create_libncx()
  51     model.load_module('nsd')
  52     model.load_module('rw-nsd')
  53
  54     def __init__(self, descriptor):
  55         self._nsd = descriptor
  56
  57     def __str__(self):
  58         return str(self._nsd)
  59
  60     @property
  61     def name(self):
  62         return self._nsd.name
  63
  64     @property
  65     def id(self):
  66         return self._nsd.id
  67
  68     @property
  69     def vnfd_ids(self):
  70         return [c.vnfd_id_ref for c in self._nsd.constituent_vnfd]
  71
  72     @property
  73     def constituent_vnfds(self):
  74         return self._nsd.constituent_vnfd
  75
  76     @property
  77     def vlds(self):
  78         return self._nsd.vld
  79
  80     @property
  81     def cps(self):
  82         return self._nsd.connection_point
  83
  84     @property
  85     def description(self):
  86         return self._nsd.description
  87
  88     @classmethod
  89     def from_xml_file_hdl(cls, hdl):
  90         hdl.seek(0)
  91         descriptor = RwNsdYang.YangData_Nsd_NsdCatalog_Nsd()
  92         descriptor.from_xml_v2(RiftNSD.model, hdl.read())
  93         return cls(descriptor)
  94
  95     @classmethod
  96     def from_yaml_file_hdl(cls, hdl):
  97         hdl.seek(0)
  98         descriptor = RwNsdYang.YangData_Nsd_NsdCatalog_Nsd()
  99         descriptor.from_yaml(RiftNSD.model, hdl.read())
 100         return cls(descriptor)
 101
 102     @classmethod
 103     def from_dict(cls, nsd_dict):
 104         descriptor = RwNsdYang.YangData_Nsd_NsdCatalog_Nsd.from_dict(nsd_dict)
 105         return cls(descriptor)
 106
 107
 108 class RiftVNFD(object):
 109     model = RwYang.Model.create_libncx()
 110     model.load_module('vnfd')
 111     model.load_module('rw-vnfd')
 112
 113     def __init__(self, descriptor):
 114         self._vnfd = descriptor
 115
 116     def __str__(self):
 117         return str(self._vnfd)
 118
 119     @property
 120     def id(self):
 121         return self._vnfd.id
 122
 123     @property
 124     def name(self):
 125         return self._vnfd.name
 126
 127     @property
 128     def description(self):
 129         return self._vnfd.description
 130
 131     @property
 132     def cps(self):
 133         return self._vnfd.connection_point
 134
 135     @property
 136     def vdus(self):
 137         return self._vnfd.vdu
 138
 139     @property
 140     def internal_vlds(self):
 141         return self._vnfd.internal_vld
 142
 143     @classmethod
 144     def from_xml_file_hdl(cls, hdl):
 145         hdl.seek(0)
 146         descriptor = RwVnfdYang.YangData_Vnfd_VnfdCatalog_Vnfd()
 147         descriptor.from_xml_v2(RiftVNFD.model, hdl.read())
 148         return cls(descriptor)
 149
 150     @classmethod
 151     def from_yaml_file_hdl(cls, hdl):
 152         hdl.seek(0)
 153         descriptor = RwVnfdYang.YangData_Vnfd_VnfdCatalog_Vnfd()
 154         descriptor.from_yaml(RiftVNFD.model, hdl.read())
 155         return cls(descriptor)
 156
 157     @classmethod
 158     def from_dict(cls, vnfd_dict):
 159         descriptor = RwVnfdYang.YangData_Vnfd_VnfdCatalog_Vnfd.from_dict(vnfd_dict)
 160         return cls(descriptor)
 161
 162
 163 def is_writable_directory(dir_path):
 164     """ Returns True if dir_path is writable, False otherwise
 165
 166     Arguments:
 167         dir_path - A directory path
 168     """
 169     if not os.path.exists(dir_path):
 170         raise ValueError("Directory does not exist: %s", dir_path)
 171
 172     try:
 173         testfile = tempfile.TemporaryFile(dir=dir_path)
 174         testfile.close()
 175     except OSError:
 176         return False
 177
 178     return True
 179
 180
 181 def create_vnfd_from_files(vnfd_file_hdls):
 182     """ Create a list of RiftVNFD instances from xml/yaml file handles
 183
 184     Arguments:
 185         vnfd_file_hdls - Rift VNFD XML/YAML file handles
 186
 187     Returns:
 188         A list of RiftVNFD instances
 189     """
 190     vnfd_dict = {}
 191     for vnfd_file_hdl in vnfd_file_hdls:
 192         if vnfd_file_hdl.name.endswith("yaml") or vnfd_file_hdl.name.endswith("yaml"):
 193             vnfd = RiftVNFD.from_yaml_file_hdl(vnfd_file_hdl)
 194         else:
 195             vnfd = RiftVNFD.from_xml_file_hdl(vnfd_file_hdl)
 196         vnfd_dict[vnfd.id] = vnfd
 197
 198     return vnfd_dict
 199
 200
 201 def create_nsd_from_file(nsd_file_hdl):
 202     """ Create a list of RiftNSD instances from yaml/xml file handles
 203
 204     Arguments:
 205         nsd_file_hdls - Rift NSD XML/yaml file handles
 206
 207     Returns:
 208         A list of RiftNSD instances
 209     """
 210     if nsd_file_hdl.name.endswith("yaml") or nsd_file_hdl.name.endswith("yaml"):
 211         nsd = RiftNSD.from_yaml_file_hdl(nsd_file_hdl)
 212     else:
 213         nsd = RiftNSD.from_xml_file_hdl(nsd_file_hdl)
 214     return nsd
 215
 216
 217 def ddict():
 218     return collections.defaultdict(dict)
 219
 220 def convert_vnfd_name(vnfd_name, member_idx):
 221     return vnfd_name + "__" + str(member_idx)
 222
 223
 224 def rift2openmano_nsd(rift_nsd, rift_vnfds, openmano_vnfd_ids):
 225     for vnfd_id in rift_nsd.vnfd_ids:
 226         if vnfd_id not in rift_vnfds:
 227             raise VNFNotFoundError("VNF id %s not provided" % vnfd_id)
 228
 229     openmano = {}
 230     openmano["name"] = rift_nsd.name
 231     openmano["description"] = rift_nsd.description
 232     topology = {}
 233     openmano["topology"] = topology
 234
 235     topology["nodes"] = {}
 236     for vnfd in rift_nsd.constituent_vnfds:
 237         vnfd_id = vnfd.vnfd_id_ref
 238         rift_vnfd = rift_vnfds[vnfd_id]
 239         member_idx = vnfd.member_vnf_index
 240         openmano_vnfd_id = openmano_vnfd_ids.get(vnfd_id,None)
 241         if openmano_vnfd_id:
 242             topology["nodes"][rift_vnfd.name + "__" + str(member_idx)] = {
 243                 "type": "VNF",
 244                 "vnf_id": openmano_vnfd_id
 245                 }
 246         else:
 247             topology["nodes"][rift_vnfd.name + "__" + str(member_idx)] = {
 248                 "type": "VNF",
 249                 "VNF model": rift_vnfd.name
 250                 }
 251
 252     for vld in rift_nsd.vlds:
 253         # Openmano has both bridge_net and dataplane_net models for network types
 254         # For now, since we are using openmano in developer mode lets just hardcode
 255         # to bridge_net since it won't matter anyways.
 256         # topology["nodes"][vld.name] = {"type": "network", "model": "bridge_net"}
 257         pass
 258
 259     topology["connections"] = {}
 260     for vld in rift_nsd.vlds:
 261
 262         # Create a connections entry for each external VLD
 263         topology["connections"][vld.name] = {}
 264         topology["connections"][vld.name]["nodes"] = []
 265
 266         #if vld.vim_network_name:
 267         if True:
 268             if vld.name not in topology["nodes"]:
 269                 topology["nodes"][vld.name] = {
 270                         "type": "external_network",
 271                         "model": vld.name,
 272                         }
 273
 274             # Add the external network to the list of connection points
 275             topology["connections"][vld.name]["nodes"].append(
 276                     {vld.name: "0"}
 277                     )
 278         elif vld.provider_network.has_field("physical_network"):
 279             # Add the external datacenter network to the topology
 280             # node list if it isn't already added
 281             ext_net_name = vld.provider_network.physical_network
 282             ext_net_name_with_seg = ext_net_name
 283             if vld.provider_network.has_field("segmentation_id"):
 284                 ext_net_name_with_seg += ":{}".format(vld.provider_network.segmentation_id)
 285
 286             if ext_net_name not in topology["nodes"]:
 287                 topology["nodes"][ext_net_name] = {
 288                         "type": "external_network",
 289                         "model": ext_net_name_with_seg,
 290                         }
 291
 292             # Add the external network to the list of connection points
 293             topology["connections"][vld.name]["nodes"].append(
 294                     {ext_net_name: "0"}
 295                     )
 296
 297
 298         for vnfd_cp in vld.vnfd_connection_point_ref:
 299
 300             # Get the RIFT VNF for this external VLD connection point
 301             vnfd = rift_vnfds[vnfd_cp.vnfd_id_ref]
 302
 303             # For each VNF in this connection, use the same interface name
 304             topology["connections"][vld.name]["type"] = "link"
 305             # Vnf ref is the vnf name with the member_vnf_idx appended
 306             member_idx = vnfd_cp.member_vnf_index_ref
 307             vnf_ref = vnfd.name + "__" + str(member_idx)
 308             topology["connections"][vld.name]["nodes"].append(
 309                 {
 310                     vnf_ref: vnfd_cp.vnfd_connection_point_ref
 311                 }
 312             )
 313
 314     return openmano
 315
 316 def cloud_init(rift_vnfd_id, vdu):
 317     """ Populate cloud_init with script from
 318          either the inline contents or from the file provided
 319     """
 320     vnfd_package_store = rift.package.store.VnfdPackageFilesystemStore(logger)
 321
 322     cloud_init_msg = None
 323     if vdu.cloud_init is not None:
 324         logger.debug("cloud_init script provided inline %s", vdu.cloud_init)
 325         cloud_init_msg = vdu.cloud_init
 326     elif vdu.cloud_init_file is not None:
 327         # Get cloud-init script contents from the file provided in the cloud_init_file param
 328         logger.debug("cloud_init script provided in file %s", vdu.cloud_init_file)
 329         filename = vdu.cloud_init_file
 330         vnfd_package_store.refresh()
 331         stored_package = vnfd_package_store.get_package(rift_vnfd_id)
 332         cloud_init_extractor = rift.package.cloud_init.PackageCloudInitExtractor(logger)
 333         try:
 334             cloud_init_msg = cloud_init_extractor.read_script(stored_package, filename)
 335         except rift.package.cloud_init.CloudInitExtractionError as e:
 336             raise ValueError(e)
 337     else:
 338         logger.debug("VDU translation: cloud-init script not provided")
 339         return
 340
 341     logger.debug("Current cloud init msg is {}".format(cloud_init_msg))
 342     return cloud_init_msg
 343
 344 def config_file_init(rift_vnfd_id, vdu, cfg_file):
 345     """ Populate config file init with file provided
 346     """
 347     vnfd_package_store = rift.package.store.VnfdPackageFilesystemStore(logger)
 348
 349     # Get script contents from the file provided in the cloud_init directory
 350     logger.debug("config file script provided in file {}".format(cfg_file))
 351     filename = cfg_file
 352     vnfd_package_store.refresh()
 353     stored_package = vnfd_package_store.get_package(rift_vnfd_id)
 354     cloud_init_extractor = rift.package.cloud_init.PackageCloudInitExtractor(logger)
 355     try:
 356             cfg_file_msg = cloud_init_extractor.read_script(stored_package, filename)
 357     except rift.package.cloud_init.CloudInitExtractionError as e:
 358             raise ValueError(e)
 359
 360     logger.debug("Current config file msg is {}".format(cfg_file_msg))
 361     return cfg_file_msg
 362
 363 def rift2openmano_vnfd(rift_vnfd, rift_nsd):
 364     openmano_vnf = {"vnf":{}}
 365     vnf = openmano_vnf["vnf"]
 366
 367     vnf["name"] = rift_vnfd.name
 368     vnf["description"] = rift_vnfd.description
 369
 370     vnf["external-connections"] = []
 371
 372     def find_vdu_and_ext_if_by_cp_ref(cp_ref_name):
 373         for vdu in rift_vnfd.vdus:
 374             for ext_if in vdu.external_interface:
 375                 if ext_if.vnfd_connection_point_ref == cp_ref_name:
 376                     return vdu, ext_if
 377
 378         raise ValueError("External connection point reference %s not found" % cp_ref_name)
 379
 380     def find_vdu_and_int_if_by_cp_ref(cp_ref_id):
 381         for vdu in rift_vnfd.vdus:
 382             for int_if in vdu.internal_interface:
 383                 if int_if.vdu_internal_connection_point_ref == cp_ref_id:
 384                     return vdu, int_if
 385
 386         raise ValueError("Internal connection point reference %s not found" % cp_ref_id)
 387
 388     def rift2openmano_if_type(ext_if):
 389
 390         cp_ref_name = ext_if.vnfd_connection_point_ref
 391         for vld in rift_nsd.vlds:
 392
 393             # if it is an explicit mgmt_network then check if the given
 394             # cp_ref is a part of it
 395             if not vld.mgmt_network:
 396                 continue
 397
 398             for vld_cp in vld.vnfd_connection_point_ref:
 399                 if vld_cp.vnfd_connection_point_ref == cp_ref_name:
 400                     return "mgmt"
 401
 402
 403         rift_type = ext_if.virtual_interface.type_yang
 404         # Retaining it for backward compatibility!
 405         if rift_type == "OM_MGMT":
 406             return "mgmt"
 407         elif rift_type == "VIRTIO" or rift_type == "E1000":
 408             return "bridge"
 409         else:
 410             return "data"
 411
 412     def rift2openmano_vif(rift_type):
 413         if rift_type == "VIRTIO":
 414             return "virtio"
 415         elif rift_type == "E1000":
 416             return "e1000"
 417         else:
 418             raise ValueError("VDU Virtual Interface type {} not supported".format(rift_type))
 419
 420     # Add all external connections
 421     for cp in rift_vnfd.cps:
 422         # Find the VDU and and external interface for this connection point
 423         vdu, ext_if = find_vdu_and_ext_if_by_cp_ref(cp.name)
 424         connection = {
 425             "name": cp.name,
 426             "type": rift2openmano_if_type(ext_if),
 427             "VNFC": vdu.name,
 428             "local_iface_name": ext_if.name,
 429             "description": "%s iface on VDU %s" % (ext_if.name, vdu.name),
 430             }
 431
 432         vnf["external-connections"].append(connection)
 433
 434     # Add all internal networks
 435     for vld in rift_vnfd.internal_vlds:
 436         connection = {
 437             "name": vld.name,
 438             "description": vld.description,
 439             "type": "bridge",
 440             "elements": [],
 441             }
 442
 443         # Add the specific VDU connection points
 444         for int_cp in vld.internal_connection_point:
 445             vdu, int_if = find_vdu_and_int_if_by_cp_ref(int_cp.id_ref)
 446             connection["elements"].append({
 447                 "VNFC": vdu.name,
 448                 "local_iface_name": int_if.name,
 449                 })
 450         if "internal-connections" not in vnf:
 451             vnf["internal-connections"] = []
 452
 453         vnf["internal-connections"].append(connection)
 454
 455     # Add VDU's
 456     vnf["VNFC"] = []
 457     for vdu in rift_vnfd.vdus:
 458         vnfc = {
 459             "name": vdu.name,
 460             "description": vdu.name,
 461             "bridge-ifaces": [],
 462             }
 463
 464         if vdu.vm_flavor.has_field("storage_gb") and vdu.vm_flavor.storage_gb:
 465             vnfc["disk"] = vdu.vm_flavor.storage_gb
 466
 467         if vdu.has_field("image"):
 468             if os.path.isabs(vdu.image):
 469                 vnfc["VNFC image"] = vdu.image
 470             else:
 471                 vnfc["image name"] = vdu.image
 472                 if vdu.has_field("image_checksum"):
 473                     vnfc["image checksum"] = vdu.image_checksum
 474
 475         dedicated_int = False
 476         for intf in list(vdu.internal_interface) + list(vdu.external_interface):
 477             if intf.virtual_interface.type_yang in ["SR_IOV", "PCI_PASSTHROUGH"]:
 478                 dedicated_int = True
 479         if vdu.guest_epa.has_field("numa_node_policy") or dedicated_int:
 480             vnfc["numas"] = [{
 481                            "memory": max(int(vdu.vm_flavor.memory_mb/1024), 1),
 482                            "interfaces":[],
 483                            }]
 484             numa_node_policy = vdu.guest_epa.numa_node_policy
 485             if numa_node_policy.has_field("node"):
 486                 numa_node = numa_node_policy.node[0]
 487
 488                 if numa_node.has_field("paired_threads"):
 489                     if numa_node.paired_threads.has_field("num_paired_threads"):
 490                         vnfc["numas"][0]["paired-threads"] = numa_node.paired_threads.num_paired_threads
 491                     if len(numa_node.paired_threads.paired_thread_ids) > 0:
 492                         vnfc["numas"][0]["paired-threads-id"] = []
 493                         for pair in numa_node.paired_threads.paired_thread_ids:
 494                              vnfc["numas"][0]["paired-threads-id"].append(
 495                                      [pair.thread_a, pair.thread_b]
 496                                      )
 497
 498             else:
 499                 if vdu.vm_flavor.has_field("vcpu_count"):
 500                     vnfc["numas"][0]["cores"] = max(vdu.vm_flavor.vcpu_count, 1)
 501
 502         if vdu.vm_flavor.has_field("vcpu_count") and vdu.vm_flavor.vcpu_count:
 503             vnfc["vcpus"] = vdu.vm_flavor.vcpu_count
 504
 505         if vdu.vm_flavor.has_field("memory_mb") and vdu.vm_flavor.memory_mb:
 506             vnfc["ram"] = vdu.vm_flavor.memory_mb
 507
 508
 509         if vdu.has_field("hypervisor_epa"):
 510             vnfc["hypervisor"] = {}
 511             if vdu.hypervisor_epa.has_field("type"):
 512                 if vdu.hypervisor_epa.type_yang == "REQUIRE_KVM":
 513                     vnfc["hypervisor"]["type"] = "QEMU-kvm"
 514
 515             if vdu.hypervisor_epa.has_field("version"):
 516                 vnfc["hypervisor"]["version"] = vdu.hypervisor_epa.version
 517
 518         if vdu.has_field("host_epa"):
 519             vnfc["processor"] = {}
 520             if vdu.host_epa.has_field("om_cpu_model_string"):
 521                 vnfc["processor"]["model"] = vdu.host_epa.om_cpu_model_string
 522             if vdu.host_epa.has_field("om_cpu_feature"):
 523                 vnfc["processor"]["features"] = []
 524                 for feature in vdu.host_epa.om_cpu_feature:
 525                     vnfc["processor"]["features"].append(feature.feature)
 526
 527         if vdu.has_field("volumes"):
 528             vnfc["devices"] = []
 529             # Sort volumes as device-list is implictly ordered by Openmano
 530             newvollist = sorted(vdu.volumes, key=lambda k: k.name)
 531             for iter_num, volume in enumerate(newvollist):
 532                 if iter_num == 0:
 533                     # Convert the first volume to vnfc.image
 534                     if os.path.isabs(volume.image):
 535                         vnfc["VNFC image"] = volume.image
 536                     else:
 537                         vnfc["image name"] = volume.image
 538                         if volume.has_field("image_checksum"):
 539                             vnfc["image checksum"] = volume.image_checksum
 540                 else:
 541                     # Add Openmano devices
 542                     device = {}
 543                     device["type"] = volume.device_type
 544                     device["image name"] = volume.image
 545                     if volume.has_field("image_checksum"):
 546                         device["image checksum"] = volume.image_checksum
 547                     vnfc["devices"].append(device)
 548
 549         vnfc_boot_data_init = False
 550         if vdu.has_field("cloud_init") or vdu.has_field("cloud_init_file"):
 551             vnfc['boot-data'] = dict()
 552             vnfc_boot_data_init = True
 553             vnfc['boot-data']['user-data'] = cloud_init(rift_vnfd.id, vdu)
 554
 555         if vdu.has_field("supplemental_boot_data"):
 556             if vdu.supplemental_boot_data.has_field('boot_data_drive'):
 557                 if vdu.supplemental_boot_data.boot_data_drive is True:
 558                     if vnfc_boot_data_init is False:
 559                         vnfc['boot-data'] = dict()
 560                         vnfc_boot_data_init = True
 561                     vnfc['boot-data']['boot-data-drive'] = vdu.supplemental_boot_data.boot_data_drive
 562
 563             if vdu.supplemental_boot_data.has_field('config_file'):
 564                 om_cfgfile_list = list()
 565                 for custom_config_file in vdu.supplemental_boot_data.config_file:
 566                     cfg_source = config_file_init(rift_vnfd.id, vdu, custom_config_file.source)
 567                     om_cfgfile_list.append({"dest":custom_config_file.dest, "content": cfg_source})
 568                 vnfc['boot-data']['config-files'] = om_cfgfile_list
 569
 570
 571         vnf["VNFC"].append(vnfc)
 572
 573         for int_if in list(vdu.internal_interface) + list(vdu.external_interface):
 574             intf = {
 575                 "name": int_if.name,
 576                 }
 577             if int_if.virtual_interface.has_field("vpci"):
 578                 intf["vpci"] = int_if.virtual_interface.vpci
 579
 580             if int_if.virtual_interface.type_yang in ["VIRTIO", "E1000"]:
 581                 intf["model"] = rift2openmano_vif(int_if.virtual_interface.type_yang)
 582                 vnfc["bridge-ifaces"].append(intf)
 583
 584             elif int_if.virtual_interface.type_yang in ["OM_MGMT"]:
 585                 vnfc["bridge-ifaces"].append(intf)
 586
 587             elif int_if.virtual_interface.type_yang == "SR_IOV":
 588                 intf["bandwidth"] = "10 Gbps"
 589                 intf["dedicated"] = "no"
 590                 vnfc["numas"][0]["interfaces"].append(intf)
 591
 592             elif int_if.virtual_interface.type_yang == "PCI_PASSTHROUGH":
 593                 intf["bandwidth"] = "10 Gbps"
 594                 intf["dedicated"] = "yes"
 595                 if "interfaces" not in vnfc["numas"][0]:
 596                     vnfc["numas"][0]["interfaces"] = []
 597                 vnfc["numas"][0]["interfaces"].append(intf)
 598             else:
 599                 raise ValueError("Interface type %s not supported" % int_if.virtual_interface)
 600
 601             if int_if.virtual_interface.has_field("bandwidth"):
 602                 if int_if.virtual_interface.bandwidth != 0:
 603                     bps = int_if.virtual_interface.bandwidth
 604
 605                     # Calculate the bits per second conversion
 606                     for x in [('M', 1000000), ('G', 1000000000)]:
 607                         if bps/x[1] >= 1:
 608                             intf["bandwidth"] = "{} {}bps".format(math.ceil(bps/x[1]), x[0])
 609
 610         # Sort bridge-ifaces-list TODO sort others
 611         newlist = sorted(vnfc["bridge-ifaces"], key=lambda k: k['name'])
 612         vnfc["bridge-ifaces"] = newlist
 613
 614     return openmano_vnf
 615
 616
 617 def parse_args(argv=sys.argv[1:]):
 618     """ Parse the command line arguments
 619
 620     Arguments:
 621         arv - The list of arguments to parse
 622
 623     Returns:
 624         Argparse Namespace instance
 625     """
 626     parser = argparse.ArgumentParser()
 627     parser.add_argument(
 628         '-o', '--outdir',
 629         default='-',
 630         help="Directory to output converted descriptors. Default is stdout",
 631         )
 632
 633     parser.add_argument(
 634         '-n', '--nsd-file-hdl',
 635         metavar="nsd_file",
 636         type=argparse.FileType('r'),
 637         help="Rift NSD Descriptor File",
 638         )
 639
 640     parser.add_argument(
 641         '-v', '--vnfd-file-hdls',
 642         metavar="vnfd_file",
 643         action='append',
 644         type=argparse.FileType('r'),
 645         help="Rift VNFD Descriptor File",
 646         )
 647
 648     args = parser.parse_args(argv)
 649
 650     if not os.path.exists(args.outdir):
 651         os.makedirs(args.outdir)
 652
 653     if not is_writable_directory(args.outdir):
 654         logging.error("Directory %s is not writable", args.outdir)
 655         sys.exit(1)
 656
 657     return args
 658
 659
 660 def write_yaml_to_file(name, outdir, desc_dict):
 661     file_name = "%s.yaml" % name
 662     yaml_str = yaml.dump(desc_dict)
 663     if outdir == "-":
 664         sys.stdout.write(yaml_str)
 665         return
 666
 667     file_path = os.path.join(outdir, file_name)
 668     dir_path = os.path.dirname(file_path)
 669     if not os.path.exists(dir_path):
 670         os.makedirs(dir_path)
 671
 672     with open(file_path, "w") as hdl:
 673         hdl.write(yaml_str)
 674
 675     logger.info("Wrote descriptor to %s", file_path)
 676
 677
 678 def main(argv=sys.argv[1:]):
 679     args = parse_args(argv)
 680
 681     nsd = None
 682     openmano_vnfr_ids = dict()
 683     vnf_dict = None
 684     if args.vnfd_file_hdls is not None:
 685         vnf_dict = create_vnfd_from_files(args.vnfd_file_hdls)
 686
 687     for vnfd in vnf_dict:
 688         openmano_vnfr_ids[vnfd] = vnfd
 689
 690     if args.nsd_file_hdl is not None:
 691         nsd = create_nsd_from_file(args.nsd_file_hdl)
 692
 693     openmano_nsd = rift2openmano_nsd(nsd, vnf_dict, openmano_vnfr_ids)
 694
 695     write_yaml_to_file(openmano_nsd["name"], args.outdir, openmano_nsd)
 696
 697     for vnf in vnf_dict.values():
 698         openmano_vnf = rift2openmano_vnfd(vnf, nsd)
 699         write_yaml_to_file(openmano_vnf["vnf"]["name"], args.outdir, openmano_vnf)
 700
 701
 702 if __name__ == "__main__":
 703     logging.basicConfig(level=logging.WARNING)
 704     main()