def balance_rings():
'''handle doing ring balancing and distribution.'''
new_ring = False
for ring in SWIFT_RINGS.itervalues():
if balance_ring(ring):
log('Balanced ring %s' % ring)
new_ring = True
if not new_ring:
return
for ring in SWIFT_RINGS.keys():
f = '%s.ring.gz' % ring
shutil.copyfile(os.path.join(SWIFT_CONF_DIR, f),
os.path.join(WWW_DIR, f))
if cluster.eligible_leader(SWIFT_HA_RES):
msg = 'Broadcasting notification to all storage nodes that new '\
'ring is ready for consumption.'
log(msg)
path = WWW_DIR.split('/var/www/')[1]
trigger = uuid.uuid4()
if cluster.is_clustered():
hostname = config('vip')
else:
hostname = 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 relation_ids('swift-storage'):
relation_set(relation_id=relid, swift_hash=get_swift_hash(),
rings_url=rings_url, trigger=trigger)
service_restart('swift-proxy')
def notify_storage_rings_available():
"""Notify peer swift-storage relations that they should synchronise ring
and builder files.
Note that this should only be called from the leader unit.
"""
if not is_elected_leader(SWIFT_HA_RES):
log("Ring availability storage-relation broadcast requested by "
"non-leader - skipping", level=WARNING)
return
hostname = get_hostaddr()
hostname = format_ipv6_addr(hostname) or hostname
path = os.path.basename(get_www_dir())
rings_url = 'http://%s/%s' % (hostname, path)
trigger = uuid.uuid4()
# Notify storage nodes that there is a new ring to fetch.
log("Notifying storage nodes that new ring is ready for sync.", level=INFO)
for relid in relation_ids('swift-storage'):
relation_set(relation_id=relid, swift_hash=get_swift_hash(),
rings_url=rings_url, trigger=trigger)
def notify_storage_rings_available():
"""Notify peer swift-storage relations that they should synchronise ring
and builder files.
Note that this should only be called from the leader unit.
"""
if not is_elected_leader(SWIFT_HA_RES):
log("Ring availability storage-relation broadcast requested by "
"non-leader - skipping", level=WARNING)
return
hostname = get_hostaddr()
hostname = format_ipv6_addr(hostname) or hostname
path = os.path.basename(get_www_dir())
rings_url = 'http://%s/%s' % (hostname, path)
trigger = uuid.uuid4()
# Notify storage nodes that there is a new ring to fetch.
log("Notifying storage nodes that new rings are ready for sync.",
level=INFO)
for relid in relation_ids('swift-storage'):
relation_set(relation_id=relid, swift_hash=get_swift_hash(),
rings_url=rings_url, trigger=trigger)
