// getConfig looks for configuration info on the given environment
func getConfig(info configstore.EnvironInfo, envs *environs.Environs, envName string) (*config.Config, error) {
if info != nil && len(info.BootstrapConfig()) > 0 {
cfg, err := config.New(config.NoDefaults, info.BootstrapConfig())
if err != nil {
logger.Warningf("failed to parse bootstrap-config: %v", err)
}
return cfg, err
}
if envs != nil {
cfg, err := envs.Config(envName)
if err != nil && !errors.IsNotFound(err) {
logger.Warningf("failed to get config for environment %q: %v", envName, err)
}
return cfg, err
}
return nil, errors.NotFoundf("environment %q", envName)
}
// cacheAPIInfo updates the local environment settings (.jenv file)
// with the provided apiInfo, assuming we've just successfully
// connected to the API server.
func cacheAPIInfo(info configstore.EnvironInfo, apiInfo *api.Info) error {
info.SetAPIEndpoint(configstore.APIEndpoint{
Addresses: apiInfo.Addrs,
CACert: string(apiInfo.CACert),
})
_, username, err := names.ParseTag(apiInfo.Tag, names.UserTagKind)
if err != nil {
return fmt.Errorf("invalid API user tag: %v", err)
}
info.SetAPICredentials(configstore.APICredentials{
User: username,
Password: apiInfo.Password,
})
return info.Write()
}
// 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
}