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from jinja2 import Template
import json
import os
import requests
import sys
BASE_DIR = os.path.dirname(os.path.dirname(__file__))
HEADERS = {'Content-Type': 'application/json'}
AUTH = requests.auth.HTTPBasicAuth('healthcheck', 'zb!XztG34')
def get_tosca_policy(policy):
pol = json.loads(policy)
tosca_policy = {
'tosca_definitions_version': 'tosca_simple_yaml_1_1_0',
'topology_template': {
'policies': [pol]
}
}
return json.dumps(tosca_policy)
def gen_policy(template_dir, gen_dir, filename, jinja_args):
with open(os.path.join(template_dir, filename), 'r') as file:
contents = file.read()
tm = Template(contents)
gen = tm.render(jinja_args)
tosca_policy = get_tosca_policy(gen)
with open(os.path.join(gen_dir, filename), 'w') as file:
file.write(tosca_policy)
def create_and_push_policies(policy_dir):
for filename in os.listdir(policy_dir):
if filename.endswith('.json'):
with open(os.path.join(policy_dir, filename), 'r') as file:
data = json.loads(file.read())
metadata = create_policy(data)
if metadata:
push_policy(metadata)
def delete_policies(policy_dir):
for filename in os.listdir(policy_dir):
if filename.endswith('.json'):
with open(os.path.join(policy_dir, filename), 'r') as file:
data = json.loads(file.read())
policy_id = list(data['topology_template']['policies'][0].keys())[0]
undeploy_policy(policy_id)
metadata = delete_policy(data)
def create_policy(data):
policy = data['topology_template']['policies'][0]
content = policy[list(policy.keys())[0]]
policy_type = content['type']
type_version = content['type_version']
policy_url = "https://policy-api:6969"
path = '/policy/api/v1/policytypes/{}/versions/{}/policies'.format(policy_type, type_version)
url = policy_url + path
try:
response = requests.post(url, headers=HEADERS, auth=AUTH, data=json.dumps(data), verify=False)
except Exception as e:
print(str(e))
return None
if response.status_code == 200:
print('Policy {} created'.format(content['metadata']['policy-id']))
return content['metadata']
else:
print(response.content)
return None
def push_policy(metadata):
data = {'policies': [metadata]}
policy_url = "https://policy-pap:6969"
path = '/policy/pap/v1/pdps/policies'
url = policy_url + path
try:
response = requests.post(url, headers=HEADERS, auth=AUTH, data=json.dumps(data), verify=False)
except Exception as e:
print(str(e))
print("Cannot push policy {}".format(metadata['policy-id']))
if response.status_code == 200:
print("Policy {} pushed".format(metadata['policy-id']))
else:
print(response.content)
def undeploy_policy(policy_id):
policy_url = "https://policy-pap:6969"
path = '/policy/pap/v1/pdps/policies/{}'.format(policy_id)
url = policy_url + path
try:
response = requests.delete(url, headers=HEADERS, auth=AUTH, verify=False)
except Exception as e:
print(str(e))
print("Cannot undeploy policy {}".format(policy_id))
if response.status_code == 200:
print("Policy {} undeployed".format(policy_id))
else:
print(response.content)
def delete_policy(data):
policy = data['topology_template']['policies'][0]
content = policy[list(policy.keys())[0]]
policy_type = content['type']
type_version = content['type_version']
policy_id = content['metadata']['policy-id']
version = content['version']
policy_url = "https://policy-api:6969"
path = '/policy/api/v1/policytypes/{}/versions/{}/policies/{}/versions/{}'.format(policy_type, type_version, policy_id, version)
url = policy_url + path
try:
response = requests.delete(url, headers=HEADERS, auth=AUTH, data=json.dumps(data), verify=False)
except Exception as e:
print(str(e))
return None
if response.status_code == 200:
print('Policy {} deleted'.format(content['metadata']['policy-id']))
return content['metadata']
else:
print(response.content)
return None
def generate_nssi_policies(jinja_args):
template_dir = BASE_DIR + 'nssi_policies'
gen_dir = BASE_DIR + 'gen_nssi_policies'
if not os.path.exists(gen_dir):
os.mkdir(gen_dir)
for filename in os.listdir(template_dir):
if filename.endswith('.json'):
gen_policy(template_dir, gen_dir, filename, jinja_args)
def generate_nsi_policies(jinja_args):
template_dir = BASE_DIR + 'nsi_policies'
gen_dir = BASE_DIR + 'gen_nsi_policies'
if not os.path.exists(gen_dir):
os.mkdir(gen_dir)
for filename in os.listdir(template_dir):
if filename.endswith('.json'):
gen_policy(template_dir, gen_dir, filename, jinja_args)
def create_policy_types(policy_dir):
for filename in os.listdir(policy_dir):
if filename.endswith('.json'):
with open(os.path.join(policy_dir, filename), 'r') as file:
data = json.loads(file.read())
create_policy_type(data)
def create_policy_type(data):
policy_url = "https://policy-api:6969"
path = '/policy/api/v1/policytypes'
url = policy_url + path
try:
response = requests.post(url, headers=HEADERS, auth=AUTH, data=json.dumps(data), verify=False)
except Exception as e:
print(str(e))
return None
if response.status_code == 200:
print('Policy type created')
else:
print(response.content)
return None
action = sys.argv[1]
if action == "generate_nssi_policies":
jinja_args = {
'service_name': sys.argv[2],
'goal': sys.argv[3],
'attribute': sys.argv[4]
}
generate_nssi_policies(jinja_args)
elif action == "create_and_push_policies":
policy_dir = sys.argv[2]
create_and_push_policies(policy_dir)
elif action == "delete_policies":
policy_dir = sys.argv[2]
delete_policies(policy_dir)
elif action == "generate_nsi_policies":
jinja_args = {
'service_name': sys.argv[2]
}
generate_nsi_policies(jinja_args)
elif action == "create_policy_types":
policy_dir = sys.argv[2]
create_policy_types(policy_dir)
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