// apiInfoConnect looks for endpoint on the given environment and
// tries to connect to it, sending the result on the returned channel.
func apiInfoConnect(store configstore.Storage, info configstore.EnvironInfo, apiOpen apiOpenFunc, stop <-chan struct{}) (apiState, error) {
endpoint := info.APIEndpoint()
if info == nil || len(endpoint.Addresses) == 0 {
return nil, &infoConnectError{fmt.Errorf("no cached addresses")}
}
logger.Infof("connecting to API addresses: %v", endpoint.Addresses)
apiInfo := &api.Info{
Addrs: endpoint.Addresses,
CACert: endpoint.CACert,
Tag: names.UserTag(info.APICredentials().User),
Password: info.APICredentials().Password,
}
st, err := apiOpen(apiInfo, api.DefaultDialOpts())
if err != nil {
return nil, &infoConnectError{err}
}
return st, nil
}
// cacheChangedAPIAddresses updates the local environment settings (.jenv file)
// with the provided API server addresses if they have changed.
func cacheChangedAPIAddresses(info configstore.EnvironInfo, st apiState) error {
var addrs []string
for _, serverHostPorts := range st.APIHostPorts() {
for _, hostPort := range serverHostPorts {
// Only cache addresses that are likely to be usable,
// exclude IPv6 for now and localhost style ones.
if hostPort.Type != instance.Ipv6Address && hostPort.NetworkScope != instance.NetworkMachineLocal {
addrs = append(addrs, hostPort.NetAddr())
}
}
}
endpoint := info.APIEndpoint()
if len(addrs) == 0 || !addrsChanged(endpoint.Addresses, addrs) {
return nil
}
logger.Debugf("API addresses changed from %q to %q", endpoint.Addresses, addrs)
endpoint.Addresses = addrs
info.SetAPIEndpoint(endpoint)
if err := info.Write(); err != nil {
return err
}
logger.Infof("updated API connection settings cache")
return nil
}