Esempio n. 1
0
// 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
}
Esempio n. 2
0
func (env *joyentEnviron) StateServerInstances() ([]instance.Id, error) {
	return common.ProviderStateInstances(env, env.Storage())
}