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import os
import zipfile
import shutil
import yaml
import json
import logging
class CsarParser:
def __init__(self):
self.logger = logging.getLogger(__name__)
self.svc_model = {}
self.net_models = [] # there could be multiple networks
self.vnf_models = [] # this version only support a single VNF in the service template
self.vfmodule_models = [] # this version only support a single VF module in the service template
def get_service_yaml_from_csar(self, csar_file):
"""
:param csar_file: csar file path name, e.g. 'csar/vgmux.csar'
:return:
"""
tmpdir = './__tmp'
if os.path.isdir(tmpdir):
shutil.rmtree(tmpdir)
os.mkdir(tmpdir)
with zipfile.ZipFile(csar_file, "r") as zip_ref:
zip_ref.extractall(tmpdir)
yamldir = tmpdir + '/Definitions'
if os.path.isdir(yamldir):
for filename in os.listdir(yamldir):
# look for service template like this: service-Vcpesvcbrgemu111601-template.yml
if filename.startswith('service-') and filename.endswith('-template.yml'):
return os.path.join(yamldir, filename)
self.logger.error('Invalid file: ' + csar_file)
return ''
def get_service_model_info(self, svc_template):
""" extract service model info from yaml and convert to what to be used in SO request
Sample from yaml:
{
"UUID": "aed4fc5e-b871-4e26-8531-ceabd46df85e",
"category": "Network L1-3",
"description": "Infra service",
"ecompGeneratedNaming": true,
"invariantUUID": "c806682a-5b3a-44d8-9e88-0708be151296",
"name": "vcpesvcinfra111601",
"namingPolicy": "",
"serviceEcompNaming": true,
"serviceRole": "",
"serviceType": "",
"type": "Service"
},
Convert to
{
"modelType": "service",
"modelInvariantId": "ca4c7a70-06fd-45d8-8b9e-c9745d25bf2b",
"modelVersionId": "5d8911b4-e50c-4096-a81e-727a8157193c",
"modelName": "vcpesvcbrgemu111601",
"modelVersion": "1.0"
},
"""
if svc_template['metadata']['type'] != 'Service':
self.logger.error('csar error: metadata->type is not Service')
return
metadata = svc_template['metadata']
self.svc_model = {
'modelType': 'service',
'modelInvariantId': metadata['invariantUUID'],
'modelVersionId': metadata['UUID'],
'modelName': metadata['name']
}
if 'version' in metadata:
self.svc_model['modelVersion'] = metadata['version']
else:
self.svc_model['modelVersion'] = '1.0'
def get_vnf_and_network_model_info(self, svc_template):
""" extract vnf and network model info from yaml and convert to what to be used in SO request
Sample from yaml:
"topology_template": {
"node_templates": {
"CPE_PUBLIC": {
"metadata": {
"UUID": "33b2c367-a165-4bb3-81c3-0150cd06ceff",
"category": "Generic",
"customizationUUID": "db1d4ac2-62cd-4e5d-b2dc-300dbd1a5da1",
"description": "Generic NeutronNet",
"invariantUUID": "3d4c0e47-4794-4e98-a794-baaced668930",
"name": "Generic NeutronNet",
"resourceVendor": "ATT (Tosca)",
"resourceVendorModelNumber": "",
"resourceVendorRelease": "1.0.0.wd03",
"subcategory": "Network Elements",
"type": "VL",
"version": "1.0"
},
"type": "org.openecomp.resource.vl.GenericNeutronNet"
},
Convert to
{
"modelType": "network",
"modelInvariantId": "3d4c0e47-4794-4e98-a794-baaced668930",
"modelVersionId": "33b2c367-a165-4bb3-81c3-0150cd06ceff",
"modelName": "Generic NeutronNet",
"modelVersion": "1.0",
"modelCustomizationId": "db1d4ac2-62cd-4e5d-b2dc-300dbd1a5da1",
"modelCustomizationName": "CPE_PUBLIC"
},
"""
node_dic = svc_template['topology_template']['node_templates']
for node_name, v in list(node_dic.items()):
model = {
'modelInvariantId': v['metadata']['invariantUUID'],
'modelVersionId': v['metadata']['UUID'],
'modelName': v['metadata']['name'],
'modelVersion': v['metadata']['version'],
'modelCustomizationId': v['metadata']['customizationUUID'],
'modelCustomizationName': node_name
}
if v['type'].startswith('org.openecomp.resource.vl.GenericNeutronNet'):
# a neutron network is found
self.logger.info('Parser found a network: ' + node_name)
model['modelType'] = 'network'
self.net_models.append(model)
elif v['type'].startswith('org.openecomp.resource.vf.'):
# a VNF is found
self.logger.info('Parser found a VNF: ' + node_name)
model['modelType'] = 'vnf'
self.vnf_models.append(model)
else:
self.logger.warning('Parser found a node that is neither a network nor a VNF: ' + node_name)
def get_vfmodule_model_info(self, svc_template):
""" extract network model info from yaml and convert to what to be used in SO request
Sample from yaml:
"topology_template": {
"groups": {
"vspinfra1116010..Vspinfra111601..base_vcpe_infra..module-0": {
"metadata": {
"vfModuleModelCustomizationUUID": "11ddac51-30e3-4a3f-92eb-2eb99c2cb288",
"vfModuleModelInvariantUUID": "02f70416-581e-4f00-bde1-d65e69af95c5",
"vfModuleModelName": "Vspinfra111601..base_vcpe_infra..module-0",
"vfModuleModelUUID": "88c78078-f1fd-4f73-bdd9-10420b0f6353",
"vfModuleModelVersion": "1"
},
"properties": {
"availability_zone_count": null,
"initial_count": 1,
"max_vf_module_instances": 1,
"min_vf_module_instances": 1,
"vf_module_description": null,
"vf_module_label": "base_vcpe_infra",
"vf_module_type": "Base",
"vfc_list": null,
"volume_group": false
},
"type": "org.openecomp.groups.VfModule"
}
},
Convert to
{
"modelType": "vfModule",
"modelInvariantId": "02f70416-581e-4f00-bde1-d65e69af95c5",
"modelVersionId": "88c78078-f1fd-4f73-bdd9-10420b0f6353",
"modelName": "Vspinfra111601..base_vcpe_infra..module-0",
"modelVersion": "1",
"modelCustomizationId": "11ddac51-30e3-4a3f-92eb-2eb99c2cb288",
"modelCustomizationName": "Vspinfra111601..base_vcpe_infra..module-0"
},
"""
node_dic = svc_template['topology_template']['groups']
for node_name, v in list(node_dic.items()):
if v['type'].startswith('org.openecomp.groups.VfModule'):
model = {
'modelType': 'vfModule',
'modelInvariantId': v['metadata']['vfModuleModelInvariantUUID'],
'modelVersionId': v['metadata']['vfModuleModelUUID'],
'modelName': v['metadata']['vfModuleModelName'],
'modelVersion': v['metadata']['vfModuleModelVersion'],
'modelCustomizationId': v['metadata']['vfModuleModelCustomizationUUID'],
'modelCustomizationName': v['metadata']['vfModuleModelName']
}
self.vfmodule_models.append(model)
self.logger.info('Parser found a VF module: ' + model['modelCustomizationName'])
def parse_service_yaml(self, filename):
# clean up
self.svc_model = {}
self.net_models = [] # there could be multiple networks
self.vnf_models = [] # this version only support a single VNF in the service template
self.vfmodule_models = [] # this version only support a single VF module in the service template
svc_template = yaml.load(open(filename, 'r'), Loader=yaml.Loader)
self.get_service_model_info(svc_template)
self.get_vnf_and_network_model_info(svc_template)
self.get_vfmodule_model_info(svc_template)
return True
def parse_csar(self, csar_file):
yaml_file = self.get_service_yaml_from_csar(csar_file)
if yaml_file != '':
return self.parse_service_yaml(yaml_file)
def print_models(self):
print('---------Service Model----------')
print(json.dumps(self.svc_model, indent=2, sort_keys=True))
print('---------Network Model(s)----------')
for model in self.net_models:
print(json.dumps(model, indent=2, sort_keys=True))
print('---------VNF Model(s)----------')
for model in self.vnf_models:
print(json.dumps(model, indent=2, sort_keys=True))
print('---------VF Module Model(s)----------')
for model in self.vfmodule_models:
print(json.dumps(model, indent=2, sort_keys=True))
def test(self):
self.parse_csar('csar/service-Vcpesvcinfra111601-csar.csar')
self.print_models()
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