// setAllocatedOrRelease tries to associate the newly allocated
// address addr with the container. On failure it makes the best
// effort to cleanup and release addr, logging issues along the way.
func (p *ProvisionerAPI) setAllocatedOrRelease(
addr *state.IPAddress,
environ environs.NetworkingEnviron,
instId instance.Id,
container *state.Machine,
subnetId network.Id,
macAddress string,
) (err error) {
defer func() {
if errors.Cause(err) == nil {
// Success!
return
}
logger.Warningf(
"failed to mark address %q as %q to container %q: %v (releasing and retrying)",
addr.String(), state.AddressStateAllocated, container, err,
)
// It's as good as unavailable for us, so mark it as
// such.
err = setAddrState(addr, state.AddressStateUnavailable)
if err != nil {
logger.Warningf(
"cannot set address %q to %q: %v (ignoring and releasing)",
addr.String(), state.AddressStateUnavailable, err,
)
}
err = environ.ReleaseAddress(instId, subnetId, addr.Address(), addr.MACAddress(), "")
if err == nil {
logger.Infof("address %q released; trying to allocate new", addr.String())
return
}
logger.Warningf(
"failed to release address %q on instance %q and subnet %q: %v (ignoring and retrying)",
addr.String(), instId, subnetId, err,
)
}()
// Any errors returned below will trigger the release/cleanup
// steps above.
if err = allocateAddrTo(addr, container, macAddress); err != nil {
return errors.Trace(err)
}
if err = setAddrsTo(addr, container); err != nil {
return errors.Trace(err)
}
logger.Infof("assigned address %q to container %q", addr.String(), container)
return nil
}
func (a *addresserHandler) releaseIPAddress(addr *state.IPAddress) (err error) {
defer errors.DeferredAnnotatef(&err, "failed to release address %v", addr.Value())
logger.Debugf("attempting to release dead address %#v", addr.Value())
subnetId := network.Id(addr.SubnetId())
for attempt := common.ShortAttempt.Start(); attempt.Next(); {
err = a.releaser.ReleaseAddress(addr.InstanceId(), subnetId, addr.Address(), addr.MACAddress())
if err == nil {
return nil
}
}
// Don't remove the address from state so we
// can retry releasing the address later.
logger.Warningf("cannot release address %q: %v (will retry)", addr.Value(), err)
return errors.Trace(err)
}
func (s *IPAddressSuite) assertAddress(
c *gc.C,
ipAddr *state.IPAddress,
addr network.Address,
ipState state.AddressState,
machineId, ifaceId, subnetId string,
) {
c.Assert(ipAddr, gc.NotNil)
c.Assert(ipAddr.MachineId(), gc.Equals, machineId)
c.Assert(ipAddr.InterfaceId(), gc.Equals, ifaceId)
c.Assert(ipAddr.SubnetId(), gc.Equals, subnetId)
c.Assert(ipAddr.Value(), gc.Equals, addr.Value)
c.Assert(ipAddr.Type(), gc.Equals, addr.Type)
c.Assert(ipAddr.Scope(), gc.Equals, addr.Scope)
c.Assert(ipAddr.State(), gc.Equals, ipState)
c.Assert(ipAddr.Address(), jc.DeepEquals, addr)
c.Assert(ipAddr.String(), gc.Equals, addr.String())
c.Assert(ipAddr.Id(), gc.Equals, s.State.EnvironUUID()+":"+addr.Value)
c.Assert(ipAddr.InstanceId(), gc.Equals, instance.UnknownId)
}