def attach_vip(cls, context, instance_id, vip):
"""
1.check vip args
2.expect not allocated;
3.get rip,rport
4.add into args.vip as a member
:param context:
:param instance_id:
:param vip:
:return:
"""
instance = BuiltInstance.load(context, instance_id)
LOG.info("attach_vip instance:%s", instance_id)
# check vip args
if not vip:
msg = "Failed attach_vip to instance:%s, need vip" % instance.id
LOG.error(msg)
raise Exception(msg)
# expect not allocated
try:
instance_vip = DBInstanceVip.find_by(context, instance_id=instance.id, deleted=False)
except Exception as ex:
pass
else:
if instance_vip and instance_vip.vip_id is not None:
msg = "Failed attach_vip to instance:%s, instance already attached with vip_id:%s." \
% (instance.id, instance_vip.vip_id)
LOG.error(msg)
raise Exception(msg)
# try get rip,rport
try:
rip, rport = VipManager._get_instance_rip_rport(instance)
except Exception as ex:
msg = "Failed attach_vip to instance:%s, exception:%s" % (instance.id, ex)
LOG.error(msg)
raise Exception(msg)
virtual_instance_id = instance_vip.virtual_instance_id
if virtual_instance_id is None:
raise Exception("virtual_instance_id not found, instance_id: %s" % instance_id)
# add into args.vip as a member
vport = instance.port
LOG.info("attach_vip, instance:%s, rip:%s, rport:%s, vip:%s, vport:%s", instance.id, rip,
rport, vip, vport)
vip = InstanceVip.allocate(context, instance_id=instance.id, rip=rip, vip_address=vip,
vport=vport, rport=rport, attached_virtual_instid=virtual_instance_id)
LOG.info("attach_vip ok, instance:%s, vip:%s", instance, vip)
def get_instance_id_bytenant(type):
master_id = None
_list = group_models.DBInstanceGroupItem.find_all(
tenant_id=get_context().tenant,
type = type,
deleted=False)
for _item in _list:
_inst = BuiltInstance.load(get_context(), _item.instance_id)
if _inst.userStatus == "active":
master_id = _inst.id
break
if master_id is None:
raise Exception("not found active %s" % type)
return master_id
def allocate_vip(cls, context, instance_id):
"""
1.expect not allocated;
2.get rip,rport;
3.allocate vip;
:param context:
:param instance_id:
:return vip:
"""
instance = BuiltInstance.load(context, instance_id)
LOG.info("allocate_vip instance:%s", instance_id)
# expect not allocated
try:
instance_vip = DBInstanceVip.find_by(context, instance_id=instance.id, deleted=False)
except Exception as ex:
pass
else:
if instance_vip and instance_vip.vip_id is not None:
msg = "Failed allocate_vip to instance:%s, instance already allocated with vip_id:%s." \
% (instance.id, instance_vip.vip_id)
LOG.error(msg)
raise Exception(msg)
# try get rip,rport
try:
rip, rport = VipManager._get_instance_rip_rport(instance)
except Exception as ex:
msg = "Failed allocate_vip to instance:%s, exception:%s" % (instance.id, ex)
LOG.error(msg)
raise Exception(msg)
virtual_instance_id = instance_vip.virtual_instance_id
if virtual_instance_id is None:
raise Exception("virtual_instance_id not found, instance_id: %s" % instance_id)
# allocate
vport = instance.port
LOG.info("allocate_vip, instance:%s, rip:%s, rport:%s, vport:%s", instance, rip, rport, vport)
vip = InstanceVip.allocate(context, instance_id=instance.id, rip=rip, vport=vport, rport=rport,
attached_virtual_instid=virtual_instance_id)
LOG.info("allocate_vip ok, instance:%s, vip:%s", instance, vip)
return vip
def dettach_vip(cls, context, instance_id):
"""
1.dettach_vip;
2.release_vip if the vip not bind any instance;
:param context:
:param instance_id:
:return:
"""
instance = BuiltInstance.load(context, instance_id)
LOG.info("dettach_vip instance:%s", instance_id)
# try dettach_vip
try:
instance_vip = DBInstanceVip.find_by(context, instance_id=instance.id, deleted=False)
vip_id = instance_vip.vip_id
InstanceVip.deallocate(context, instance.id, purge=False)
except Exception as e:
msg = "Failed dettach_vip from instance:%s, exception:%s" % (instance.id, e)
LOG.error(msg)
raise Exception(msg)
# try release_vip if the vip not bind any instance
try:
vips = DBVips.find_by(context, id=vip_id, deleted=False)
vip = vips.vip
except Exception as e:
LOG.warn("get vips error, vip_id:%s, exception:%s", vip_id, e)
return
try:
inst_list = DBInstanceVip.find_all(vip_id=vip_id, deleted=False)
LOG.debug("dettach_vip find_all by vip_id:%s, inst_list:%s", vip_id, inst_list)
has = False
for inst in inst_list:
LOG.debug("inst:%s, vip_id:%s", inst.id, inst.vip_id)
has = True
if not has:
InstanceVip.release_vip(context, vip)
except Exception as e:
msg = "Failed release_vip with vip:%s, exception:%s" % (vip, e)
LOG.error(msg)
raise Exception(msg)
LOG.info("dettach_vip ok, instance:%s", instance)