func (c *configInternal) SetAPIHostPorts(servers [][]network.HostPort) {
if c.apiDetails == nil {
return
}
var addrs []string
for _, serverHostPorts := range servers {
// Try the preferred approach first.
serverHP, ok := network.SelectHostPortBySpace(serverHostPorts, network.DefaultSpace)
if ok {
addrs = append(addrs, serverHP.NetAddr())
} else {
// Fallback to the legacy approach.
hps := network.SelectInternalHostPorts(serverHostPorts, false)
addrs = append(addrs, hps...)
}
}
c.apiDetails.addresses = addrs
logger.Infof("API server address details %q written to agent config as %q", servers, addrs)
}
// SetAPIHostPorts sets the addresses of the API server instances.
// Each server is represented by one element in the top level slice.
func (st *State) SetAPIHostPorts(netHostsPorts [][]network.HostPort) error {
// Filter any addresses not on the default space, if possible.
// All API servers need to be accessible there.
var hpsToSet [][]network.HostPort
for _, hps := range netHostsPorts {
defaultSpaceHP, ok := network.SelectHostPortBySpace(hps, network.DefaultSpace)
if !ok {
logger.Warningf("cannot determine API addresses in space %q to use as API endpoints; using all addresses", network.DefaultSpace)
hpsToSet = netHostsPorts
break
}
hpsToSet = append(hpsToSet, []network.HostPort{defaultSpaceHP})
}
doc := apiHostPortsDoc{
APIHostPorts: fromNetworkHostsPorts(hpsToSet),
}
buildTxn := func(attempt int) ([]txn.Op, error) {
existing, err := st.APIHostPorts()
if err != nil {
return nil, err
}
op := txn.Op{
C: controllersC,
Id: apiHostPortsKey,
Assert: bson.D{{
"apihostports", fromNetworkHostsPorts(existing),
}},
}
if !hostsPortsEqual(netHostsPorts, existing) {
op.Update = bson.D{{
"$set", bson.D{{"apihostports", doc.APIHostPorts}},
}}
}
return []txn.Op{op}, nil
}
if err := st.run(buildTxn); err != nil {
return errors.Annotate(err, "cannot set API addresses")
}
logger.Debugf("setting API hostPorts: %v", hpsToSet)
return nil
}
// Handle is part of the watcher.NotifyHandler interface.
func (c *APIAddressUpdater) Handle(_ <-chan struct{}) error {
addresses, err := c.addresser.APIHostPorts()
if err != nil {
return fmt.Errorf("error getting addresses: %v", err)
}
// Filter out any LXC bridge addresses. See LP bug #1416928.
hpsToSet := make([][]network.HostPort, 0, len(addresses))
for _, hostPorts := range addresses {
// First try to keep only addresses in the default space where all API servers are on.
defaultSpaceHP, ok := network.SelectHostPortBySpace(hostPorts, network.DefaultSpace)
if ok {
hpsToSet = append(hpsToSet, []network.HostPort{defaultSpaceHP})
continue
} else {
// As a fallback, use the old behavior.
logger.Warningf("cannot determine API addresses by space %q (using all as fallback)", network.DefaultSpace)
}
// Strip ports, filter, then add ports again.
filtered := network.FilterLXCAddresses(network.HostsWithoutPort(hostPorts))
hps := make([]network.HostPort, 0, len(filtered))
for _, hostPort := range hostPorts {
for _, addr := range filtered {
if addr.Value == hostPort.Address.Value {
hps = append(hps, hostPort)
}
}
}
if len(hps) > 0 {
hpsToSet = append(hpsToSet, hps)
}
}
logger.Debugf("updating API hostPorts to %+v", hpsToSet)
if err := c.setter.SetAPIHostPorts(hpsToSet); err != nil {
return fmt.Errorf("error setting addresses: %v", err)
}
return nil
}