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#!/usr/bin/python
import os
import sys
import shutil
import uuid
from subprocess import check_call
import lib.openstack_common as openstack
import lib.utils as utils
import lib.cluster_utils as cluster
import swift_utils as swift
extra_pkgs = [
"haproxy",
"python-jinja2"
]
def install():
src = utils.config_get('openstack-origin')
if src != 'distro':
openstack.configure_installation_source(src)
check_call(['apt-get', 'update'])
rel = openstack.get_os_codename_install_source(src)
pkgs = swift.determine_packages(rel)
utils.install(*pkgs)
utils.install(*extra_pkgs)
swift.ensure_swift_dir()
# initialize swift configs.
# swift.conf hash
ctxt = {
'swift_hash': swift.get_swift_hash()
}
with open(swift.SWIFT_CONF, 'w') as conf:
conf.write(swift.render_config(swift.SWIFT_CONF, ctxt))
# swift-proxy.conf
swift.write_proxy_config()
# memcached.conf
ctxt = {'proxy_ip': utils.get_host_ip()}
with open(swift.MEMCACHED_CONF, 'w') as conf:
conf.write(swift.render_config(swift.MEMCACHED_CONF, ctxt))
check_call(['service', 'memcached', 'restart'])
# initialize new storage rings.
for ring in swift.SWIFT_RINGS.iteritems():
swift.initialize_ring(ring[1],
utils.config_get('partition-power'),
utils.config_get('replicas'),
utils.config_get('min-hours'))
# configure a directory on webserver for distributing rings.
if not os.path.isdir(swift.WWW_DIR):
os.mkdir(swift.WWW_DIR, 0755)
uid, gid = swift.swift_user()
os.chown(swift.WWW_DIR, uid, gid)
swift.write_apache_config()
swift.configure_https()
def keystone_joined(relid=None):
if not cluster.eligible_leader(swift.SWIFT_HA_RES):
return
if cluster.is_clustered():
hostname = utils.config_get('vip')
else:
hostname = utils.unit_get('private-address')
port = utils.config_get('bind-port')
if cluster.https():
proto = 'https'
else:
proto = 'http'
admin_url = '%s://%s:%s' % (proto, hostname, port)
internal_url = public_url = '%s/v1/AUTH_$(tenant_id)s' % admin_url
utils.relation_set(service='swift',
region=utils.config_get('region'),
public_url=public_url, internal_url=internal_url,
admin_url=admin_url,
requested_roles=utils.config_get('operator-roles'),
rid=relid)
def keystone_changed():
swift.write_proxy_config()
swift.configure_https()
# Re-fire keystone hooks to ripple back the HTTPS service entry
for relid in utils.relation_ids('identity-service'):
keystone_joined(relid=relid)
def balance_rings():
'''handle doing ring balancing and distribution.'''
new_ring = False
for ring in swift.SWIFT_RINGS.itervalues():
if swift.balance_ring(ring):
utils.juju_log('INFO', 'Balanced ring %s' % ring)
new_ring = True
if not new_ring:
return
for ring in swift.SWIFT_RINGS.keys():
f = '%s.ring.gz' % ring
shutil.copyfile(os.path.join(swift.SWIFT_CONF_DIR, f),
os.path.join(swift.WWW_DIR, f))
if cluster.eligible_leader(swift.SWIFT_HA_RES):
msg = 'Broadcasting notification to all storage nodes that new '\
'ring is ready for consumption.'
utils.juju_log('INFO', msg)
path = swift.WWW_DIR.split('/var/www/')[1]
trigger = uuid.uuid4()
swift_hash = swift.get_swift_hash()
if cluster.is_clustered():
hostname = utils.config_get('vip')
else:
hostname = utils.unit_get('private-address')
rings_url = 'http://%s/%s' % (hostname, path)
# notify storage nodes that there is a new ring to fetch.
for relid in utils.relation_ids('swift-storage'):
utils.relation_set(rid=relid, swift_hash=swift_hash,
rings_url=rings_url, trigger=trigger)
swift.proxy_control('restart')
def storage_changed():
zone = swift.get_zone(utils.config_get('zone-assignment'))
node_settings = {
'ip': utils.get_host_ip(utils.relation_get('private-address')),
'zone': zone,
'account_port': utils.relation_get('account_port'),
'object_port': utils.relation_get('object_port'),
'container_port': utils.relation_get('container_port'),
}
if None in node_settings.itervalues():
utils.juju_log('INFO', 'storage_changed: Relation not ready.')
return None
for k in ['zone', 'account_port', 'object_port', 'container_port']:
node_settings[k] = int(node_settings[k])
# Grant new node access to rings via apache.
swift.write_apache_config()
# allow for multiple devs per unit, passed along as a : separated list
devs = utils.relation_get('device').split(':')
for dev in devs:
node_settings['device'] = dev
for ring in swift.SWIFT_RINGS.itervalues():
if not swift.exists_in_ring(ring, node_settings):
swift.add_to_ring(ring, node_settings)
if swift.should_balance([r for r in swift.SWIFT_RINGS.itervalues()]):
balance_rings()
def storage_broken():
swift.write_apache_config()
def config_changed():
relids = utils.relation_ids('identity-service')
if relids:
for relid in relids:
keystone_joined(relid)
swift.write_proxy_config()
swift.configure_https()
def cluster_changed():
swift.configure_haproxy()
def ha_relation_changed():
clustered = utils.relation_get('clustered')
if clustered and cluster.is_leader(swift.SWIFT_HA_RES):
utils.juju_log('INFO',
'Cluster configured, notifying other services and'
'updating keystone endpoint configuration')
# Tell all related services to start using
# the VIP instead
for r_id in utils.relation_ids('identity-service'):
keystone_joined(relid=r_id)
def ha_relation_joined():
# Obtain the config values necessary for the cluster config. These
# include multicast port and interface to bind to.
corosync_bindiface = utils.config_get('ha-bindiface')
corosync_mcastport = utils.config_get('ha-mcastport')
vip = utils.config_get('vip')
vip_cidr = utils.config_get('vip_cidr')
vip_iface = utils.config_get('vip_iface')
if not vip:
utils.juju_log('ERROR',
'Unable to configure hacluster as vip not provided')
sys.exit(1)
# Obtain resources
resources = {
'res_swift_vip': 'ocf:heartbeat:IPaddr2',
'res_swift_haproxy': 'lsb:haproxy'
}
resource_params = {
'res_swift_vip': 'params ip="%s" cidr_netmask="%s" nic="%s"' % \
(vip, vip_cidr, vip_iface),
'res_swift_haproxy': 'op monitor interval="5s"'
}
init_services = {
'res_swift_haproxy': 'haproxy'
}
clones = {
'cl_swift_haproxy': 'res_swift_haproxy'
}
utils.relation_set(init_services=init_services,
corosync_bindiface=corosync_bindiface,
corosync_mcastport=corosync_mcastport,
resources=resources,
resource_params=resource_params,
clones=clones)
hooks = {
'install': install,
'config-changed': config_changed,
'identity-service-relation-joined': keystone_joined,
'identity-service-relation-changed': keystone_changed,
'swift-storage-relation-changed': storage_changed,
'swift-storage-relation-broken': storage_broken,
"cluster-relation-joined": cluster_changed,
"cluster-relation-changed": cluster_changed,
"ha-relation-joined": ha_relation_joined,
"ha-relation-changed": ha_relation_changed
}
utils.do_hooks(hooks)
sys.exit(0)
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