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import apt_pkg
from base64 import b64decode
import json
import os
import requests
from six.moves.urllib.parse import urlparse
from socket import gethostbyname
from charmhelpers.core.hookenv import (
config,
log,
WARNING,
ERROR,
relation_ids,
related_units,
)
from charmhelpers.core.host import (
write_file,
)
from charmhelpers.core.templating import render
apt_pkg.init()
config = config()
def update_service_ips():
try:
endpoints = _get_endpoints()
except Exception as e:
log("Couldn't detect services ips: " + str(e),
level=WARNING)
return False
changed = {}
def _check_key(key):
val = endpoints.get(key)
if val and val != config.get(key):
config[key] = val
changed[key] = val
_check_key("compute_service_ip")
_check_key("image_service_ip")
_check_key("network_service_ip")
if changed:
config.save()
return True
return False
def _get_endpoints():
auth_info = config.get("auth_info")
if auth_info:
auth_info = json.loads(auth_info)
if not auth_info or not auth_info.get("keystone_ip"):
raise Exception("auth_info is not ready.")
api_ver = int(auth_info["keystone_api_version"])
if api_ver == 2:
req_data = {
"auth": {
"tenantName": auth_info["keystone_admin_tenant"],
"passwordCredentials": {
"username": auth_info["keystone_admin_user"],
"password": auth_info["keystone_admin_password"]}}}
else:
req_data = {
"auth": {
"identity": {
"methods": ["password"],
"password": {
"user": {
"name": auth_info["keystone_admin_user"],
"domain": {"id": "default"},
"password": auth_info["keystone_admin_password"]
}
}
}
}
}
url = "{proto}://{ip}:{port}/{tokens}".format(
proto=auth_info["keystone_protocol"],
ip=auth_info["keystone_ip"],
port=auth_info["keystone_public_port"],
tokens=auth_info["keystone_api_tokens"])
r = requests.post(url, headers={'Content-type': 'application/json'},
data=json.dumps(req_data), verify=False)
content = json.loads(r.content)
result = dict()
catalog = (content["access"]["serviceCatalog"] if api_ver == 2 else
content["token"]["catalog"])
for service in catalog:
if api_ver == 2:
# NOTE: 0 means first region. do we need to search for region?
url = service["endpoints"][0]["publicURL"]
else:
for endpoint in service["endpoints"]:
if endpoint["interface"] == "public":
url = endpoint["url"]
break
host = gethostbyname(urlparse(url).hostname)
result[service["type"] + "_service_ip"] = host
return result
def write_configs():
# don't need to write any configs for nova. only for neutron.
units = [unit for rid in relation_ids("neutron-api")
for unit in related_units(rid)]
if not units:
return
ctx = _get_context()
# store files in standard path
ca_path = "/etc/contrail/ssl/certs/ca-cert.pem"
ssl_ca = ctx["ssl_ca"]
_save_file(ca_path, ssl_ca)
ctx["ssl_ca_path"] = ca_path
render("ContrailPlugin.ini",
"/etc/neutron/plugins/opencontrail/ContrailPlugin.ini",
ctx, "root", "neutron", 0o440)
def _get_context():
ctx = {}
ip = config.get("api_vip")
if not ip:
ip = config.get("api_ip")
ctx["api_server"] = ip
ctx["api_port"] = config.get("api_port")
ssl_ca = _decode_cert("ssl_ca")
ctx["ssl_ca"] = ssl_ca
ctx["ssl_enabled"] = (ssl_ca is not None and len(ssl_ca) > 0)
log("CTX: " + str(ctx))
auth_info = config.get("auth_info")
if auth_info:
ctx.update(json.loads(auth_info))
return ctx
def _decode_cert(key):
val = config.get(key)
if not val:
return None
try:
return b64decode(val)
except Exception as e:
log("Couldn't decode certificate from config['{}']: {}".format(
key, str(e)), level=ERROR)
return None
def _save_file(path, data):
if data:
fdir = os.path.dirname(path)
if not os.path.exists(fdir):
os.makedirs(fdir)
write_file(path, data, perms=0o444)
elif os.path.exists(path):
os.remove(path)
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