// StateServerInstances is specified in the Environ interface.
func (env *azureEnviron) StateServerInstances() ([]instance.Id, error) {
// Locate the state-server cloud service, and get its addresses.
instances, err := env.AllInstances()
if err != nil {
return nil, err
}
var stateServerInstanceIds []instance.Id
var loadStateFile bool
for _, inst := range instances {
azureInstance := inst.(*azureInstance)
label := azureInstance.hostedService.Label
if decoded, err := base64.StdEncoding.DecodeString(label); err == nil {
if string(decoded) == stateServerLabel {
stateServerInstanceIds = append(stateServerInstanceIds, inst.Id())
continue
}
}
if !loadStateFile {
_, roleName := env.splitInstanceId(azureInstance.Id())
if roleName == "" {
loadStateFile = true
}
}
}
if loadStateFile {
// Some legacy instances were found, so we must load provider-state
// to find which instance was the original state server. If we find
// a legacy environment, then stateServerInstanceIds will not contain
// the original bootstrap instance, which is the only one that will
// be in provider-state.
instanceIds, err := common.ProviderStateInstances(env, env.Storage())
if err != nil {
return nil, err
}
stateServerInstanceIds = append(stateServerInstanceIds, instanceIds...)
}
if len(stateServerInstanceIds) == 0 {
return nil, environs.ErrNoInstances
}
return stateServerInstanceIds, nil
}
func (env *joyentEnviron) StateServerInstances() ([]instance.Id, error) {
return common.ProviderStateInstances(env, env.Storage())
}