openstack/charm-neutron-api
Code Issues Proposed changes

Rationalize endpoint generation, rework tests, add support for multiple network support

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This commit is contained in:
James Page 2014-06-27 12:55:45 +01:00
parent faf2d1d655
commit b082dcf12f
18 changed files with 300 additions and 100 deletions
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17
.project Normal file
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@ -0,0 +1,17 @@
<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>neutron-api</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
<buildCommand>
<name>org.python.pydev.PyDevBuilder</name>
<arguments>
</arguments>
</buildCommand>
</buildSpec>
<natures>
<nature>org.python.pydev.pythonNature</nature>
</natures>
</projectDescription>

9
.pydevproject Normal file
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@ -0,0 +1,9 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<?eclipse-pydev version="1.0"?><pydev_project>
<pydev_property name="org.python.pydev.PYTHON_PROJECT_VERSION">python 2.7</pydev_property>
<pydev_property name="org.python.pydev.PYTHON_PROJECT_INTERPRETER">Default</pydev_property>
<pydev_pathproperty name="org.python.pydev.PROJECT_SOURCE_PATH">
<path>/neutron-api/hooks</path>
<path>/neutron-api/unit_tests</path>
</pydev_pathproperty>
</pydev_project>

3
charm-helpers-sync.yaml
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@ -1,4 +1,4 @@
branch: lp:charm-helpers
branch: lp:~james-page/charm-helpers/network-splits
destination: hooks/charmhelpers
include:
- core
@ -8,3 +8,4 @@ include:
- contrib.network.ovs
- contrib.storage.linux
- payload.execd
- contrib.network.ip

24
config.yaml
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@ -89,3 +89,27 @@ options:
default: False
type: boolean
description: Enable verbose logging
# Network configuration options
# by default all access is over 'private-address'
os-admin-network:
type: string
description: |
The IP address and netmask of the OpenStack Admin network (e.g.,
192.168.0.0/24)
.
This network will be used for admin endpoints.
os-internal-network:
type: string
description: |
The IP address and netmask of the OpenStack Internal network (e.g.,
192.168.0.0/24)
.
This network will be used for internal endpoints.
os-public-network:
type: string
description: |
The IP address and netmask of the OpenStack Public network (e.g.,
192.168.0.0/24)
.
This network will be used for public endpoints.

5
hooks/charmhelpers/contrib/hahelpers/cluster.py
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@ -163,13 +163,14 @@ def get_hacluster_config():
return conf
def canonical_url(configs, vip_setting='vip'):
def canonical_url(configs, vip_setting='vip', address=None):
'''
Returns the correct HTTP URL to this host given the state of HTTPS
configuration and hacluster.
:configs : OSTemplateRenderer: A config tempating object to inspect for
a complete https context.
:vip_setting: str: Setting in charm config that specifies
VIP address.
'''
@ -179,5 +180,5 @@ def canonical_url(configs, vip_setting='vip'):
if is_clustered():
addr = config_get(vip_setting)
else:
addr = unit_get('private-address')
addr = address or unit_get('private-address')
return '%s://%s' % (scheme, addr)

69
hooks/charmhelpers/contrib/network/ip.py Normal file
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@ -0,0 +1,69 @@
import sys
from charmhelpers.fetch import apt_install
from charmhelpers.core.hookenv import (
ERROR, log,
)
try:
import netifaces
except ImportError:
apt_install('python-netifaces')
import netifaces
try:
import netaddr
except ImportError:
apt_install('python-netaddr')
import netaddr
def _validate_cidr(network):
try:
netaddr.IPNetwork(network)
except (netaddr.core.AddrFormatError, ValueError):
raise ValueError("Network (%s) is not in CIDR presentation format" %
network)
def get_address_in_network(network, fallback=None, fatal=False):
"""
Get an IPv4 address within the network from the host.
:param network (str): CIDR presentation format. For example,
'192.168.1.0/24'.
:param fallback (str): If no address is found, return fallback.
:param fatal (boolean): If no address is found, fallback is not
set and fatal is True then exit(1).
"""
def not_found_error_out():
log("No IP address found in network: %s" % network,
level=ERROR)
sys.exit(1)
if network is None:
if fallback is not None:
return fallback
else:
if fatal:
not_found_error_out()
_validate_cidr(network)
for iface in netifaces.interfaces():
addresses = netifaces.ifaddresses(iface)
if netifaces.AF_INET in addresses:
addr = addresses[netifaces.AF_INET][0]['addr']
netmask = addresses[netifaces.AF_INET][0]['netmask']
cidr = netaddr.IPNetwork("%s/%s" % (addr, netmask))
if cidr in netaddr.IPNetwork(network):
return str(cidr.ip)
if fallback is not None:
return fallback
if fatal:
not_found_error_out()
return None

58
hooks/charmhelpers/contrib/openstack/amulet/utils.py
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@ -1,4 +1,7 @@
import logging
import os
import time
import urllib
import glanceclient.v1.client as glance_client
import keystoneclient.v2_0 as keystone_client
@ -149,3 +152,58 @@ class OpenStackAmuletUtils(AmuletUtils):
endpoint_type='publicURL')
return nova_client.Client(username=user, api_key=password,
project_id=tenant, auth_url=ep)
def create_cirros_image(self, glance, image_name):
"""Download the latest cirros image and upload it to glance."""
http_proxy = os.getenv('AMULET_HTTP_PROXY')
self.log.debug('AMULET_HTTP_PROXY: {}'.format(http_proxy))
if http_proxy:
proxies = {'http': http_proxy}
opener = urllib.FancyURLopener(proxies)
else:
opener = urllib.FancyURLopener()
f = opener.open("http://download.cirros-cloud.net/version/released")
version = f.read().strip()
cirros_img = "tests/cirros-{}-x86_64-disk.img".format(version)
if not os.path.exists(cirros_img):
cirros_url = "http://{}/{}/{}".format("download.cirros-cloud.net",
version, cirros_img)
opener.retrieve(cirros_url, cirros_img)
f.close()
with open(cirros_img) as f:
image = glance.images.create(name=image_name, is_public=True,
disk_format='qcow2',
container_format='bare', data=f)
return image
def delete_image(self, glance, image):
"""Delete the specified image."""
glance.images.delete(image)
def create_instance(self, nova, image_name, instance_name, flavor):
"""Create the specified instance."""
image = nova.images.find(name=image_name)
flavor = nova.flavors.find(name=flavor)
instance = nova.servers.create(name=instance_name, image=image,
flavor=flavor)
count = 1
status = instance.status
while status == 'BUILD' and count < 10:
time.sleep(5)
instance = nova.servers.get(instance.id)
status = instance.status
self.log.debug('instance status: {}'.format(status))
count += 1
if status == 'BUILD':
return None
return instance
def delete_instance(self, nova, instance):
"""Delete the specified instance."""
nova.servers.delete(instance)

32
hooks/charmhelpers/contrib/openstack/context.py
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@ -243,23 +243,31 @@ class IdentityServiceContext(OSContextGenerator):
class AMQPContext(OSContextGenerator):
interfaces = ['amqp']
def __init__(self, ssl_dir=None):
def __init__(self, ssl_dir=None, rel_name='amqp', relation_prefix=None):
self.ssl_dir = ssl_dir
self.rel_name = rel_name
self.relation_prefix = relation_prefix
self.interfaces = [rel_name]
def __call__(self):
log('Generating template context for amqp')
conf = config()
user_setting = 'rabbit-user'
vhost_setting = 'rabbit-vhost'
if self.relation_prefix:
user_setting = self.relation_prefix + '-rabbit-user'
vhost_setting = self.relation_prefix + '-rabbit-vhost'
try:
username = conf['rabbit-user']
vhost = conf['rabbit-vhost']
username = conf[user_setting]
vhost = conf[vhost_setting]
except KeyError as e:
log('Could not generate shared_db context. '
'Missing required charm config options: %s.' % e)
raise OSContextError
ctxt = {}
for rid in relation_ids('amqp'):
for rid in relation_ids(self.rel_name):
ha_vip_only = False
for unit in related_units(rid):
if relation_get('clustered', rid=rid, unit=unit):
@ -332,10 +340,12 @@ class CephContext(OSContextGenerator):
use_syslog = str(config('use-syslog')).lower()
for rid in relation_ids('ceph'):
for unit in related_units(rid):
mon_hosts.append(relation_get('private-address', rid=rid,
unit=unit))
auth = relation_get('auth', rid=rid, unit=unit)
key = relation_get('key', rid=rid, unit=unit)
ceph_addr = \
relation_get('ceph-public-address', rid=rid, unit=unit) or \
relation_get('private-address', rid=rid, unit=unit)
mon_hosts.append(ceph_addr)
ctxt = {
'mon_hosts': ' '.join(mon_hosts),
@ -418,7 +428,8 @@ class ApacheSSLContext(OSContextGenerator):
"""
Generates a context for an apache vhost configuration that configures
HTTPS reverse proxying for one or many endpoints. Generated context
looks something like:
looks something like::
{
'namespace': 'cinder',
'private_address': 'iscsi.mycinderhost.com',
@ -633,7 +644,7 @@ class SubordinateConfigContext(OSContextGenerator):
The subordinate interface allows subordinates to export their
configuration requirements to the principle for multiple config
files and multiple serivces. Ie, a subordinate that has interfaces
to both glance and nova may export to following yaml blob as json:
to both glance and nova may export to following yaml blob as json::
glance:
/etc/glance/glance-api.conf:
@ -652,7 +663,8 @@ class SubordinateConfigContext(OSContextGenerator):
It is then up to the principle charms to subscribe this context to
the service+config file it is interestd in. Configuration data will
be available in the template context, in glance's case, as:
be available in the template context, in glance's case, as::
ctxt = {
... other context ...
'subordinate_config': {

25
hooks/charmhelpers/contrib/openstack/templating.py
View File

@ -30,15 +30,15 @@ def get_loader(templates_dir, os_release):
loading dir.
A charm may also ship a templates dir with this module
and it will be appended to the bottom of the search list, eg:
hooks/charmhelpers/contrib/openstack/templates.
and it will be appended to the bottom of the search list, eg::
:param templates_dir: str: Base template directory containing release
hooks/charmhelpers/contrib/openstack/templates
:param templates_dir (str): Base template directory containing release
sub-directories.
:param os_release : str: OpenStack release codename to construct template
:param os_release (str): OpenStack release codename to construct template
loader.
:returns : jinja2.ChoiceLoader constructed with a list of
:returns: jinja2.ChoiceLoader constructed with a list of
jinja2.FilesystemLoaders, ordered in descending
order by OpenStack release.
"""
@ -111,7 +111,8 @@ class OSConfigRenderer(object):
and ease the burden of managing config templates across multiple OpenStack
releases.
Basic usage:
Basic usage::
# import some common context generates from charmhelpers
from charmhelpers.contrib.openstack import context
@ -131,10 +132,8 @@ class OSConfigRenderer(object):
# write out all registered configs
configs.write_all()
Details:
**OpenStack Releases and template loading**
OpenStack Releases and template loading
---------------------------------------
When the object is instantiated, it is associated with a specific OS
release. This dictates how the template loader will be constructed.
@ -144,8 +143,8 @@ class OSConfigRenderer(object):
- the base templates_dir
- a template directory shipped in the charm with this helper file.
For the example above, '/tmp/templates' contains the following structure::
For the example above, '/tmp/templates' contains the following structure:
/tmp/templates/nova.conf
/tmp/templates/api-paste.ini
/tmp/templates/grizzly/api-paste.ini
@ -169,8 +168,8 @@ class OSConfigRenderer(object):
$CHARM/hooks/charmhelpers/contrib/openstack/templates. This allows
us to ship common templates (haproxy, apache) with the helpers.
Context generators
---------------------------------------
**Context generators**
Context generators are used to generate template contexts during hook
execution. Doing so may require inspecting service relations, charm
config, etc. When registered, a config file is associated with a list

2
hooks/charmhelpers/contrib/openstack/utils.py
View File

@ -84,6 +84,8 @@ def get_os_codename_install_source(src):
'''Derive OpenStack release codename from a given installation source.'''
ubuntu_rel = lsb_release()['DISTRIB_CODENAME']
rel = ''
if src is None:
return rel
if src in ['distro', 'distro-proposed']:
try:
rel = UBUNTU_OPENSTACK_RELEASE[ubuntu_rel]

9
hooks/charmhelpers/core/hookenv.py
View File

@ -25,7 +25,7 @@ cache = {}
def cached(func):
"""Cache return values for multiple executions of func + args
For example:
For example::
@cached
def unit_get(attribute):
@ -445,18 +445,19 @@ class UnregisteredHookError(Exception):
class Hooks(object):
"""A convenient handler for hook functions.
Example:
Example::
hooks = Hooks()
# register a hook, taking its name from the function name
@hooks.hook()
def install():
...
pass # your code here
# register a hook, providing a custom hook name
@hooks.hook("config-changed")
def config_changed():
...
pass # your code here
if __name__ == "__main__":
# execute a hook based on the name the program is called by

12
hooks/charmhelpers/core/host.py
View File

@ -211,13 +211,13 @@ def file_hash(path):
def restart_on_change(restart_map, stopstart=False):
"""Restart services based on configuration files changing
This function is used a decorator, for example
This function is used a decorator, for example::
@restart_on_change({
'/etc/ceph/ceph.conf': [ 'cinder-api', 'cinder-volume' ]
})
def ceph_client_changed():
...
pass # your code here
In this example, the cinder-api and cinder-volume services
would be restarted if /etc/ceph/ceph.conf is changed by the
@ -313,9 +313,11 @@ def get_nic_hwaddr(nic):
def cmp_pkgrevno(package, revno, pkgcache=None):
'''Compare supplied revno with the revno of the installed package
1 => Installed revno is greater than supplied arg
0 => Installed revno is the same as supplied arg
-1 => Installed revno is less than supplied arg
* 1 => Installed revno is greater than supplied arg
* 0 => Installed revno is the same as supplied arg
* -1 => Installed revno is less than supplied arg
'''
import apt_pkg
if not pkgcache:

38
hooks/charmhelpers/fetch/__init__.py
View File

@ -235,31 +235,39 @@ def configure_sources(update=False,
sources_var='install_sources',
keys_var='install_keys'):
"""
Configure multiple sources from charm configuration
Configure multiple sources from charm configuration.
The lists are encoded as yaml fragments in the configuration.
The frament needs to be included as a string.
Example config:
install_sources:
install_sources: |
- "ppa:foo"
- "http://example.com/repo precise main"
install_keys:
install_keys: |
- null
- "a1b2c3d4"
Note that 'null' (a.k.a. None) should not be quoted.
"""
sources = safe_load(config(sources_var))
keys = config(keys_var)
if keys is not None:
keys = safe_load(keys)
if isinstance(sources, basestring) and (
keys is None or isinstance(keys, basestring)):
add_source(sources, keys)
sources = safe_load((config(sources_var) or '').strip()) or []
keys = safe_load((config(keys_var) or '').strip()) or None
if isinstance(sources, basestring):
sources = [sources]
if keys is None:
for source in sources:
add_source(source, None)
else:
if not len(sources) == len(keys):
msg = 'Install sources and keys lists are different lengths'
raise SourceConfigError(msg)
for src_num in range(len(sources)):
add_source(sources[src_num], keys[src_num])
if isinstance(keys, basestring):
keys = [keys]
if len(sources) != len(keys):
raise SourceConfigError(
'Install sources and keys lists are different lengths')
for source, key in zip(sources, keys):
add_source(source, key)
if update:
apt_update(fatal=True)

33
hooks/neutron_api_hooks.py
View File

@ -33,7 +33,6 @@ from charmhelpers.contrib.openstack.neutron import (
)
from neutron_api_utils import (
determine_endpoints,
determine_packages,
determine_ports,
register_configs,
@ -51,6 +50,7 @@ from charmhelpers.contrib.hahelpers.cluster import (
)
from charmhelpers.payload.execd import execd_preinstall
from charmhelpers.contrib.network.ip import get_address_in_network
hooks = Hooks()
CONFIGS = register_configs()
@ -152,8 +152,35 @@ def relation_broken():
@hooks.hook('identity-service-relation-joined')
def identity_joined(rid=None):
base_url = canonical_url(CONFIGS)
relation_set(relation_id=rid, **determine_endpoints(base_url))
public_url = '{}:{}'.format(canonical_url(CONFIGS,
address=get_address_in_network(
config('os-public-network'),
unit_get('public-address')
)),
api_port('neutron-server'))
admin_url = '{}:{}'.format(canonical_url(CONFIGS,
address=get_address_in_network(
config('os-admin-network'),
unit_get('private-address')
)),
api_port('neutron-server'))
internal_url = '{}:{}'.format(canonical_url(CONFIGS,
address=get_address_in_network(
config('os-internal-network'),
unit_get('private-address')
)),
api_port('neutron-server'))
endpoints = {
'quantum_service': 'quantum',
'quantum_region': config('region'),
'quantum_public_url': public_url,
'quantum_admin_url': admin_url,
'quantum_internal_url': internal_url,
}
relation_set(relation_id=rid, relation_settings=endpoints)
@hooks.hook('identity-service-relation-changed')

17
hooks/neutron_api_utils.py
View File

@ -72,23 +72,6 @@ def api_port(service):
return API_PORTS[service]
def determine_endpoints(url):
'''Generates a dictionary containing all relevant endpoints to be
passed to keystone as relation settings.'''
region = config('region')
neutron_url = '%s:%s' % (url, api_port('neutron-server'))
endpoints = ({
'quantum_service': 'quantum',
'quantum_region': region,
'quantum_public_url': neutron_url,
'quantum_admin_url': neutron_url,
'quantum_internal_url': neutron_url,
})
return endpoints
def determine_packages():
# currently all packages match service names
packages = [] + BASE_PACKAGES

9
unit_tests/test_neutron_api_hooks.py
View File

@ -25,7 +25,6 @@ TO_PATCH = [
'config',
'CONFIGS',
'configure_installation_source',
'determine_endpoints',
'determine_packages',
'determine_ports',
'do_openstack_upgrade',
@ -170,7 +169,10 @@ class NeutronAPIHooksTests(CharmTestCase):
self.assertTrue(self.CONFIGS.write_all.called)
def test_identity_joined(self):
_neutron_url = 'http://127.0.0.1:1234'
self.canonical_url.return_value = 'http://127.0.0.1'
self.api_port.return_value = '9696'
self.test_config.set('region','region1')
_neutron_url = 'http://127.0.0.1:9696'
_endpoints = {
'quantum_service': 'quantum',
'quantum_region': 'region1',
@ -178,11 +180,10 @@ class NeutronAPIHooksTests(CharmTestCase):
'quantum_admin_url': _neutron_url,
'quantum_internal_url': _neutron_url,
}
self.determine_endpoints.return_value = _endpoints
self._call_hook('identity-service-relation-joined')
self.relation_set.assert_called_with(
relation_id=None,
**_endpoints
relation_settings=_endpoints
)
def test_identity_changed_partial_ctxt(self):

14
unit_tests/test_neutron_api_utils.py
View File

@ -61,20 +61,6 @@ class TestNeutronAPIUtils(CharmTestCase):
port = nutils.api_port('neutron-server')
self.assertEqual(port, nutils.API_PORTS['neutron-server'])
def test_determine_endpoints(self):
test_url = 'http://127.0.0.1'
endpoints = nutils.determine_endpoints(test_url)
neutron_url = '%s:%s' % (test_url,
nutils.api_port('neutron-server'))
expect = {
'quantum_service': 'quantum',
'quantum_region': 'region101',
'quantum_public_url': neutron_url,
'quantum_admin_url': neutron_url,
'quantum_internal_url': neutron_url,
}
self.assertEqual(endpoints, expect)
def test_determine_packages(self):
pkg_list = nutils.determine_packages()
expect = nutils.BASE_PACKAGES