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import functools
import os
import pwd
import shutil
from socket import gethostbyname, gethostname
from subprocess import (
CalledProcessError,
check_call,
check_output
)
from time import sleep, time
import apt_pkg
from apt_pkg import version_compare
import json
from charmhelpers.core.hookenv import (
local_unit,
log,
related_units,
relation_get,
relation_ids,
relation_type,
remote_unit,
unit_get
)
from charmhelpers.core.host import service_restart
from charmhelpers.core.templating import render
apt_pkg.init()
def dpkg_version(pkg):
try:
return check_output(["dpkg-query", "-f", "${Version}\\n", "-W", pkg]).rstrip()
except CalledProcessError:
return None
CONTRAIL_VERSION = dpkg_version("contrail-control")
def retry(f=None, timeout=10, delay=2):
"""Retry decorator.
Provides a decorator that can be used to retry a function if it raises
an exception.
:param timeout: timeout in seconds (default 10)
:param delay: retry delay in seconds (default 2)
Examples::
# retry fetch_url function
@retry
def fetch_url():
# fetch url
# retry fetch_url function for 60 secs
@retry(timeout=60)
def fetch_url():
# fetch url
"""
if not f:
return functools.partial(retry, timeout=timeout, delay=delay)
@functools.wraps(f)
def func(*args, **kwargs):
start = time()
error = None
while True:
try:
return f(*args, **kwargs)
except Exception as e:
error = e
elapsed = time() - start
if elapsed >= timeout:
raise error
remaining = timeout - elapsed
if delay <= remaining:
sleep(delay)
else:
sleep(remaining)
raise error
return func
def contrail_api_ctx():
ctxs = [ { "api_server": gethostbyname(relation_get("private-address", unit, rid)),
"api_port": port }
for rid in relation_ids("contrail-api")
for unit, port in
((unit, relation_get("port", unit, rid)) for unit in related_units(rid))
if port ]
return ctxs[0] if ctxs else {}
def contrail_ctx():
return { "host_ip": gethostbyname(unit_get("private-address")) }
def contrail_discovery_ctx():
ctxs = [ { "discovery_server": vip if vip \
else gethostbyname(relation_get("private-address", unit, rid)),
"discovery_port": port }
for rid in relation_ids("contrail-discovery")
for unit, port, vip in
((unit, relation_get("port", unit, rid), relation_get("vip", unit, rid))
for unit in related_units(rid))
if port ]
return ctxs[0] if ctxs else {}
def contrail_ifmap_ctx():
ctxs = []
unit = local_unit()
for rid in relation_ids("contrail-ifmap"):
for u in related_units(rid):
creds = relation_get("creds", u, rid)
if creds:
creds = json.loads(creds)
if unit in creds:
cs = creds[unit]
ctx = {}
ctx["ifmap_user"] = cs["username"]
ctx["ifmap_password"] = cs["password"]
ctxs.append(ctx)
return ctxs[0] if ctxs else {}
@retry(timeout=300)
def contrail_provision_control(hostname, ip, router_asn, api_ip, api_port, op,
user, password, tenant):
check_call(["contrail-provision-control",
"--host_name", hostname,
"--host_ip", ip,
"--router_asn", str(router_asn),
"--api_server_ip", api_ip,
"--api_server_port", str(api_port),
"--oper", op,
"--admin_user", user,
"--admin_password", password,
"--admin_tenant_name", tenant])
def fix_nodemgr():
# add files missing from contrail-nodemgr package
shutil.copy("files/contrail-nodemgr-control.ini",
"/etc/contrail/supervisord_control_files")
pw = pwd.getpwnam("contrail")
os.chown("/etc/contrail/supervisord_control_files/contrail-nodemgr-control.ini",
pw.pw_uid, pw.pw_gid)
shutil.copy("files/contrail-control-nodemgr", "/etc/init.d")
os.chmod("/etc/init.d/contrail-control-nodemgr", 0755)
# fake ntp status when inside a container
if is_container():
shutil.copy("files/ntpq-nodemgr", "/usr/local/bin/ntpq")
service_restart("supervisor-control")
def fix_permissions():
os.chmod("/etc/contrail", 0755)
os.chown("/etc/contrail", 0, 0)
def identity_admin_ctx():
ctxs = [ { "auth_host": gethostbyname(hostname),
"auth_port": relation_get("service_port", unit, rid) }
for rid in relation_ids("identity-admin")
for unit, hostname in
((unit, relation_get("service_hostname", unit, rid)) for unit in related_units(rid))
if hostname ]
return ctxs[0] if ctxs else {}
def is_container():
"""Return boolean determining if inside container"""
try:
check_call(["running-in-container"])
return True
except CalledProcessError:
return False
def provision_control():
hostname = gethostname()
ip = gethostbyname(unit_get("private-address"))
api_ip, api_port = [ (gethostbyname(relation_get("private-address", unit, rid)),
port)
for rid in relation_ids("contrail-api")
for unit, port in
((unit, relation_get("port", unit, rid)) for unit in related_units(rid))
if port ][0]
user, password, tenant = [ (relation_get("service_username", unit, rid),
relation_get("service_password", unit, rid),
relation_get("service_tenant_name", unit, rid))
for rid in relation_ids("identity-admin")
for unit in related_units(rid)
if relation_get("service_hostname", unit, rid) ][0]
log("Provisioning control {}".format(ip))
contrail_provision_control(hostname, ip, 64512, api_ip, api_port, "add",
user, password, tenant)
def units(relation):
"""Return a list of units for the specified relation"""
return [ unit for rid in relation_ids(relation)
for unit in related_units(rid) ]
def unprovision_control():
if not remote_unit():
return
hostname = gethostname()
ip = gethostbyname(unit_get("private-address"))
relation = relation_type()
api_ip = None
api_port = None
if relation == "contrail-api":
api_ip = gethostbyname(relation_get("private-address"))
api_port = relation_get("port")
else:
api_ip, api_port = [ (gethostbyname(relation_get("private-address", unit, rid)),
relation_get("port", unit, rid))
for rid in relation_ids("contrail-api")
for unit in related_units(rid) ][0]
user = None
password = None
tenant = None
if relation == "identity-admin":
user = relation_get("service_username")
password = relation_get("service_password")
tenant = relation_get("service_tenant_name")
else:
user, password, tenant = [ (relation_get("service_username", unit, rid),
relation_get("service_password", unit, rid),
relation_get("service_tenant_name", unit, rid))
for rid in relation_ids("identity-admin")
for unit in related_units(rid) ][0]
log("Unprovisioning control {}".format(ip))
contrail_provision_control(hostname, ip, 64512, api_ip, api_port, "del",
user, password, tenant)
def write_control_config():
ctx = {}
ctx.update(contrail_ctx())
ctx.update(contrail_discovery_ctx())
ctx.update(contrail_ifmap_ctx())
target = "/etc/contrail/contrail-control.conf" \
if version_compare(CONTRAIL_VERSION, "2.0") >= 0 \
else "/etc/contrail/control-node.conf"
render("control-node.conf", target, ctx, "root", "contrail", 0440)
def write_nodemgr_config():
ctx = contrail_discovery_ctx()
render("contrail-control-nodemgr.conf",
"/etc/contrail/contrail-control-nodemgr.conf", ctx)
def write_vnc_api_config():
ctx = {}
ctx.update(contrail_api_ctx())
ctx.update(identity_admin_ctx())
render("vnc_api_lib.ini", "/etc/contrail/vnc_api_lib.ini", ctx)
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