blob: c75dc97c742db5d0235fcf4f99df6c64897f9bd2 [file] [log] [blame]
/*
* Copyright 2020-present Open Networking Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//Package adaptercoreonu provides the utility for onu devices, flows and statistics
package adaptercoreonu
import (
"context"
"errors"
"fmt"
"sync"
"time"
conf "github.com/opencord/voltha-lib-go/v4/pkg/config"
"github.com/golang/protobuf/ptypes"
"github.com/opencord/voltha-lib-go/v4/pkg/adapters/adapterif"
"github.com/opencord/voltha-lib-go/v4/pkg/db/kvstore"
"github.com/opencord/voltha-lib-go/v4/pkg/events/eventif"
"github.com/opencord/voltha-lib-go/v4/pkg/kafka"
"github.com/opencord/voltha-lib-go/v4/pkg/log"
"github.com/opencord/voltha-protos/v4/go/extension"
ic "github.com/opencord/voltha-protos/v4/go/inter_container"
"github.com/opencord/voltha-protos/v4/go/openflow_13"
oop "github.com/opencord/voltha-protos/v4/go/openolt"
"github.com/opencord/voltha-protos/v4/go/voltha"
"github.com/opencord/voltha-openonu-adapter-go/internal/pkg/config"
)
//OpenONUAC structure holds the ONU core information
type OpenONUAC struct {
deviceHandlers map[string]*deviceHandler
deviceHandlersCreateChan map[string]chan bool //channels for deviceHandler create events
lockDeviceHandlersMap sync.RWMutex
coreProxy adapterif.CoreProxy
adapterProxy adapterif.AdapterProxy
eventProxy eventif.EventProxy
kafkaICProxy kafka.InterContainerProxy
kvClient kvstore.Client
cm *conf.ConfigManager
config *config.AdapterFlags
numOnus int
KVStoreHost string
KVStorePort int
KVStoreType string
KVStoreTimeout time.Duration
mibTemplatesGenerated map[string]bool
lockMibTemplateGenerated sync.RWMutex
exitChannel chan int
HeartbeatCheckInterval time.Duration
HeartbeatFailReportInterval time.Duration
AcceptIncrementalEvto bool
//GrpcTimeoutInterval time.Duration
pSupportedFsms *OmciDeviceFsms
maxTimeoutInterAdapterComm time.Duration
pDownloadManager *adapterDownloadManager
}
//NewOpenONUAC returns a new instance of OpenONU_AC
func NewOpenONUAC(ctx context.Context, kafkaICProxy kafka.InterContainerProxy,
coreProxy adapterif.CoreProxy, adapterProxy adapterif.AdapterProxy,
eventProxy eventif.EventProxy, kvClient kvstore.Client, cfg *config.AdapterFlags, cm *conf.ConfigManager) *OpenONUAC {
var openOnuAc OpenONUAC
openOnuAc.exitChannel = make(chan int, 1)
openOnuAc.deviceHandlers = make(map[string]*deviceHandler)
openOnuAc.deviceHandlersCreateChan = make(map[string]chan bool)
openOnuAc.lockDeviceHandlersMap = sync.RWMutex{}
openOnuAc.kafkaICProxy = kafkaICProxy
openOnuAc.config = cfg
openOnuAc.cm = cm
openOnuAc.numOnus = cfg.OnuNumber
openOnuAc.coreProxy = coreProxy
openOnuAc.adapterProxy = adapterProxy
openOnuAc.eventProxy = eventProxy
openOnuAc.kvClient = kvClient
openOnuAc.KVStoreHost = cfg.KVStoreHost
openOnuAc.KVStorePort = cfg.KVStorePort
openOnuAc.KVStoreType = cfg.KVStoreType
openOnuAc.KVStoreTimeout = cfg.KVStoreTimeout
openOnuAc.mibTemplatesGenerated = make(map[string]bool)
openOnuAc.lockMibTemplateGenerated = sync.RWMutex{}
openOnuAc.HeartbeatCheckInterval = cfg.HeartbeatCheckInterval
openOnuAc.HeartbeatFailReportInterval = cfg.HeartbeatFailReportInterval
openOnuAc.AcceptIncrementalEvto = cfg.AccIncrEvto
openOnuAc.maxTimeoutInterAdapterComm = cfg.MaxTimeoutInterAdapterComm
//openOnuAc.GrpcTimeoutInterval = cfg.GrpcTimeoutInterval
openOnuAc.pSupportedFsms = &OmciDeviceFsms{
"mib-synchronizer": {
//mibSyncFsm, // Implements the MIB synchronization state machine
mibDbVolatileDictImpl, // Implements volatile ME MIB database
//true, // Advertise events on OpenOMCI event bus
cMibAuditDelayImpl, // Time to wait between MIB audits. 0 to disable audits.
// map[string]func() error{
// "mib-upload": onuDeviceEntry.MibUploadTask,
// "mib-template": onuDeviceEntry.MibTemplateTask,
// "get-mds": onuDeviceEntry.GetMdsTask,
// "mib-audit": onuDeviceEntry.GetMdsTask,
// "mib-resync": onuDeviceEntry.MibResyncTask,
// "mib-reconcile": onuDeviceEntry.MibReconcileTask,
// },
},
}
openOnuAc.pDownloadManager = newAdapterDownloadManager(ctx)
return &openOnuAc
}
//Start starts (logs) the adapter
func (oo *OpenONUAC) Start(ctx context.Context) error {
logger.Info(ctx, "starting-openonu-adapter")
return nil
}
/*
//stop terminates the session
func (oo *OpenONUAC) stop(ctx context.Context) error {
logger.Info(ctx,"stopping-device-manager")
oo.exitChannel <- 1
logger.Info(ctx,"device-manager-stopped")
return nil
}
*/
func (oo *OpenONUAC) addDeviceHandlerToMap(ctx context.Context, agent *deviceHandler) {
oo.lockDeviceHandlersMap.Lock()
defer oo.lockDeviceHandlersMap.Unlock()
if _, exist := oo.deviceHandlers[agent.deviceID]; !exist {
oo.deviceHandlers[agent.deviceID] = agent
oo.deviceHandlers[agent.deviceID].start(ctx)
if _, exist := oo.deviceHandlersCreateChan[agent.deviceID]; exist {
logger.Debugw(ctx, "deviceHandler created - trigger processing of pending ONU_IND_REQUEST", log.Fields{"device-id": agent.deviceID})
oo.deviceHandlersCreateChan[agent.deviceID] <- true
}
}
}
func (oo *OpenONUAC) deleteDeviceHandlerToMap(agent *deviceHandler) {
oo.lockDeviceHandlersMap.Lock()
defer oo.lockDeviceHandlersMap.Unlock()
delete(oo.deviceHandlers, agent.deviceID)
delete(oo.deviceHandlersCreateChan, agent.deviceID)
}
//getDeviceHandler gets the ONU deviceHandler and may wait until it is created
func (oo *OpenONUAC) getDeviceHandler(ctx context.Context, deviceID string, aWait bool) *deviceHandler {
oo.lockDeviceHandlersMap.Lock()
agent, ok := oo.deviceHandlers[deviceID]
if aWait && !ok {
logger.Infow(ctx, "Race condition: deviceHandler not present - wait for creation or timeout",
log.Fields{"device-id": deviceID})
if _, exist := oo.deviceHandlersCreateChan[deviceID]; !exist {
oo.deviceHandlersCreateChan[deviceID] = make(chan bool, 1)
}
deviceCreateChan := oo.deviceHandlersCreateChan[deviceID]
//keep the read sema short to allow for subsequent write
oo.lockDeviceHandlersMap.Unlock()
// based on concurrent processing the deviceHandler creation may not yet be finished at his point
// so it might be needed to wait here for that event with some timeout
select {
case <-time.After(1 * time.Second): //timer may be discussed ...
logger.Warnw(ctx, "No valid deviceHandler created after max WaitTime", log.Fields{"device-id": deviceID})
return nil
case <-deviceCreateChan:
logger.Debugw(ctx, "deviceHandler is ready now - continue", log.Fields{"device-id": deviceID})
oo.lockDeviceHandlersMap.RLock()
defer oo.lockDeviceHandlersMap.RUnlock()
return oo.deviceHandlers[deviceID]
}
}
oo.lockDeviceHandlersMap.Unlock()
return agent
}
func (oo *OpenONUAC) processInterAdapterONUIndReqMessage(ctx context.Context, msg *ic.InterAdapterMessage) error {
msgBody := msg.GetBody()
onuIndication := &oop.OnuIndication{}
if err := ptypes.UnmarshalAny(msgBody, onuIndication); err != nil {
logger.Warnw(ctx, "onu-ind-request-cannot-unmarshal-msg-body", log.Fields{"error": err})
return err
}
//ToDeviceId should address a DeviceHandler instance
targetDevice := msg.Header.ToDeviceId
onuOperstate := onuIndication.GetOperState()
waitForDhInstPresent := false
if onuOperstate == "up" {
//Race condition (relevant in BBSIM-environment only): Due to unsynchronized processing of olt-adapter and rw_core,
//ONU_IND_REQUEST msg by olt-adapter could arrive a little bit earlier than rw_core was able to announce the corresponding
//ONU by RPC of Adopt_device(). Therefore it could be necessary to wait with processing of ONU_IND_REQUEST until call of
//Adopt_device() arrived and DeviceHandler instance was created
waitForDhInstPresent = true
}
if handler := oo.getDeviceHandler(ctx, targetDevice, waitForDhInstPresent); handler != nil {
logger.Infow(ctx, "onu-ind-request", log.Fields{"device-id": targetDevice,
"OnuId": onuIndication.GetOnuId(),
"AdminState": onuIndication.GetAdminState(), "OperState": onuOperstate,
"SNR": onuIndication.GetSerialNumber()})
if onuOperstate == "up" {
return handler.createInterface(ctx, onuIndication)
} else if (onuOperstate == "down") || (onuOperstate == "unreachable") {
return handler.updateInterface(ctx, onuIndication)
} else {
logger.Errorw(ctx, "unknown-onu-ind-request operState", log.Fields{"OnuId": onuIndication.GetOnuId()})
return fmt.Errorf("invalidOperState: %s, %s", onuOperstate, targetDevice)
}
}
logger.Warnw(ctx, "no handler found for received onu-ind-request", log.Fields{
"msgToDeviceId": targetDevice})
return fmt.Errorf(fmt.Sprintf("handler-not-found-%s", targetDevice))
}
// Adapter interface required methods ############## begin #########
// #################################################################
// for original content compare: (needs according deviceHandler methods)
// /voltha-openolt-adapter/adaptercore/openolt.go
// Adopt_device creates a new device handler if not present already and then adopts the device
func (oo *OpenONUAC) Adopt_device(ctx context.Context, device *voltha.Device) error {
if device == nil {
logger.Warn(ctx, "voltha-device-is-nil")
return errors.New("nil-device")
}
logger.Infow(ctx, "adopt-device", log.Fields{"device-id": device.Id})
var handler *deviceHandler
if handler = oo.getDeviceHandler(ctx, device.Id, false); handler == nil {
handler := newDeviceHandler(ctx, oo.coreProxy, oo.adapterProxy, oo.eventProxy, device, oo)
oo.addDeviceHandlerToMap(ctx, handler)
go handler.adoptOrReconcileDevice(ctx, device)
// Launch the creation of the device topic
// go oo.createDeviceTopic(device)
}
return nil
}
//Get_ofp_device_info returns OFP information for the given device
func (oo *OpenONUAC) Get_ofp_device_info(ctx context.Context, device *voltha.Device) (*ic.SwitchCapability, error) {
logger.Errorw(ctx, "device-handler-not-set", log.Fields{"device-id": device.Id})
return nil, fmt.Errorf("device-handler-not-set %s", device.Id)
}
//Get_ofp_port_info returns OFP port information for the given device
//200630: method removed as per [VOL-3202]: OF port info is now to be delivered within UniPort create
// cmp changes in onu_uni_port.go::CreateVolthaPort()
//Process_inter_adapter_message sends messages to a target device (between adapters)
func (oo *OpenONUAC) Process_inter_adapter_message(ctx context.Context, msg *ic.InterAdapterMessage) error {
logger.Debugw(ctx, "Process_inter_adapter_message", log.Fields{"msgId": msg.Header.Id,
"msgProxyDeviceId": msg.Header.ProxyDeviceId, "msgToDeviceId": msg.Header.ToDeviceId, "Type": msg.Header.Type})
if msg.Header.Type == ic.InterAdapterMessageType_ONU_IND_REQUEST {
// we have to handle ONU_IND_REQUEST already here - see comments in processInterAdapterONUIndReqMessage()
return oo.processInterAdapterONUIndReqMessage(ctx, msg)
}
//ToDeviceId should address a DeviceHandler instance
targetDevice := msg.Header.ToDeviceId
if handler := oo.getDeviceHandler(ctx, targetDevice, false); handler != nil {
/* 200724: modification towards synchronous implementation - possible errors within processing shall be
* in the accordingly delayed response, some timing effect might result in Techprofile processing for multiple UNI's
*/
return handler.processInterAdapterMessage(ctx, msg)
/* so far the processing has been in background with according commented error treatment restrictions:
go handler.ProcessInterAdapterMessage(msg)
// error treatment might be more sophisticated
// by now let's just accept the message on 'communication layer'
// message content problems have to be evaluated then in the handler
// and are by now not reported to the calling party (to force what reaction there?)
return nil
*/
}
logger.Warnw(ctx, "no handler found for received Inter-Proxy-message", log.Fields{
"msgToDeviceId": targetDevice})
return fmt.Errorf(fmt.Sprintf("handler-not-found-%s", targetDevice))
}
//Adapter_descriptor not implemented
func (oo *OpenONUAC) Adapter_descriptor(ctx context.Context) error {
return errors.New("unImplemented")
}
//Device_types unimplemented
func (oo *OpenONUAC) Device_types(ctx context.Context) (*voltha.DeviceTypes, error) {
return nil, errors.New("unImplemented")
}
//Health returns unimplemented
func (oo *OpenONUAC) Health(ctx context.Context) (*voltha.HealthStatus, error) {
return nil, errors.New("unImplemented")
}
//Reconcile_device is called once when the adapter needs to re-create device - usually on core restart
func (oo *OpenONUAC) Reconcile_device(ctx context.Context, device *voltha.Device) error {
if device == nil {
logger.Warn(ctx, "reconcile-device-voltha-device-is-nil")
return errors.New("nil-device")
}
logger.Infow(ctx, "reconcile-device", log.Fields{"device-id": device.Id})
var handler *deviceHandler
if handler = oo.getDeviceHandler(ctx, device.Id, false); handler == nil {
handler := newDeviceHandler(ctx, oo.coreProxy, oo.adapterProxy, oo.eventProxy, device, oo)
oo.addDeviceHandlerToMap(ctx, handler)
handler.device = device
handler.reconciling = true
go handler.adoptOrReconcileDevice(ctx, handler.device)
// reconcilement will be continued after onu-device entry is added
} else {
return fmt.Errorf(fmt.Sprintf("device-already-reconciled-or-active-%s", device.Id))
}
return nil
}
//Abandon_device unimplemented
func (oo *OpenONUAC) Abandon_device(ctx context.Context, device *voltha.Device) error {
return errors.New("unImplemented")
}
//Disable_device disables the given device
func (oo *OpenONUAC) Disable_device(ctx context.Context, device *voltha.Device) error {
logger.Infow(ctx, "disable-device", log.Fields{"device-id": device.Id})
if handler := oo.getDeviceHandler(ctx, device.Id, false); handler != nil {
go handler.disableDevice(ctx, device)
return nil
}
logger.Warnw(ctx, "no handler found for device-disable", log.Fields{"device-id": device.Id})
return fmt.Errorf(fmt.Sprintf("handler-not-found-%s", device.Id))
}
//Reenable_device enables the onu device after disable
func (oo *OpenONUAC) Reenable_device(ctx context.Context, device *voltha.Device) error {
logger.Infow(ctx, "reenable-device", log.Fields{"device-id": device.Id})
if handler := oo.getDeviceHandler(ctx, device.Id, false); handler != nil {
go handler.reEnableDevice(ctx, device)
return nil
}
logger.Warnw(ctx, "no handler found for device-reenable", log.Fields{"device-id": device.Id})
return fmt.Errorf(fmt.Sprintf("handler-not-found-%s", device.Id))
}
//Reboot_device reboots the given device
func (oo *OpenONUAC) Reboot_device(ctx context.Context, device *voltha.Device) error {
logger.Infow(ctx, "reboot-device", log.Fields{"device-id": device.Id})
if handler := oo.getDeviceHandler(ctx, device.Id, false); handler != nil {
go handler.rebootDevice(ctx, device)
return nil
}
logger.Warnw(ctx, "no handler found for device-reboot", log.Fields{"device-id": device.Id})
return fmt.Errorf(fmt.Sprintf("handler-not-found-#{device.Id}"))
}
//Self_test_device unimplemented
func (oo *OpenONUAC) Self_test_device(ctx context.Context, device *voltha.Device) error {
return errors.New("unImplemented")
}
// Delete_device deletes the given device
func (oo *OpenONUAC) Delete_device(ctx context.Context, device *voltha.Device) error {
logger.Infow(ctx, "delete-device", log.Fields{"device-id": device.Id, "SerialNumber": device.SerialNumber})
if handler := oo.getDeviceHandler(ctx, device.Id, false); handler != nil {
err := handler.deleteDevicePersistencyData(ctx)
//don't leave any garbage - even in error case
oo.deleteDeviceHandlerToMap(handler)
return err
}
logger.Warnw(ctx, "no handler found for device-deletion", log.Fields{"device-id": device.Id})
return fmt.Errorf(fmt.Sprintf("handler-not-found-%s", device.Id))
}
//Get_device_details unimplemented
func (oo *OpenONUAC) Get_device_details(ctx context.Context, device *voltha.Device) error {
return errors.New("unImplemented")
}
//Update_flows_bulk returns
func (oo *OpenONUAC) Update_flows_bulk(ctx context.Context, device *voltha.Device, flows *voltha.Flows, groups *voltha.FlowGroups, flowMetadata *voltha.FlowMetadata) error {
return errors.New("unImplemented")
}
//Update_flows_incrementally updates (add/remove) the flows on a given device
func (oo *OpenONUAC) Update_flows_incrementally(ctx context.Context, device *voltha.Device,
flows *openflow_13.FlowChanges, groups *openflow_13.FlowGroupChanges, flowMetadata *voltha.FlowMetadata) error {
logger.Infow(ctx, "update-flows-incrementally", log.Fields{"device-id": device.Id})
//flow config is relayed to handler even if the device might be in some 'inactive' state
// let the handler or related FSM's decide, what to do with the modified flow state info
// at least the flow-remove must be done in respect to internal data, while OMCI activity might not be needed here
// For now, there is no support for group changes (as in the actual Py-adapter code)
// but processing is continued for flowUpdate possibly also set in the request
if groups.ToAdd != nil && groups.ToAdd.Items != nil {
logger.Warnw(ctx, "Update-flow-incr: group add not supported (ignored)", log.Fields{"device-id": device.Id})
}
if groups.ToRemove != nil && groups.ToRemove.Items != nil {
logger.Warnw(ctx, "Update-flow-incr: group remove not supported (ignored)", log.Fields{"device-id": device.Id})
}
if groups.ToUpdate != nil && groups.ToUpdate.Items != nil {
logger.Warnw(ctx, "Update-flow-incr: group update not supported (ignored)", log.Fields{"device-id": device.Id})
}
if handler := oo.getDeviceHandler(ctx, device.Id, false); handler != nil {
err := handler.FlowUpdateIncremental(ctx, flows, groups, flowMetadata)
return err
}
logger.Warnw(ctx, "no handler found for incremental flow update", log.Fields{"device-id": device.Id})
return fmt.Errorf(fmt.Sprintf("handler-not-found-%s", device.Id))
}
//Update_pm_config returns PmConfigs nil or error
func (oo *OpenONUAC) Update_pm_config(ctx context.Context, device *voltha.Device, pmConfigs *voltha.PmConfigs) error {
logger.Infow(ctx, "update-pm-config", log.Fields{"device-id": device.Id})
if handler := oo.getDeviceHandler(ctx, device.Id, false); handler != nil {
handler.updatePmConfig(ctx, pmConfigs)
} else {
logger.Warnw(ctx, "no handler found for update-pm-config", log.Fields{"device-id": device.Id})
return fmt.Errorf(fmt.Sprintf("handler-not-found-%s", device.Id))
}
return nil
}
//Receive_packet_out sends packet out to the device
func (oo *OpenONUAC) Receive_packet_out(ctx context.Context, deviceID string, egressPortNo int, packet *openflow_13.OfpPacketOut) error {
return errors.New("unImplemented")
}
//Suppress_event unimplemented
func (oo *OpenONUAC) Suppress_event(ctx context.Context, filter *voltha.EventFilter) error {
return errors.New("unImplemented")
}
//Unsuppress_event unimplemented
func (oo *OpenONUAC) Unsuppress_event(ctx context.Context, filter *voltha.EventFilter) error {
return errors.New("unImplemented")
}
//Download_image according to download image indications as given in apRequest
func (oo *OpenONUAC) Download_image(ctx context.Context, device *voltha.Device, apRequest *voltha.ImageDownload) (*voltha.ImageDownload, error) {
if !oo.pDownloadManager.imageExists(ctx, apRequest) {
logger.Debugw(ctx, "start image download", log.Fields{"image-description": apRequest})
// Download_image is not supposed to be blocking, anyway let's call the DownloadManager still synchronously to detect 'fast' problems
// the download itself is later done in background
err := oo.pDownloadManager.startDownload(ctx, apRequest)
return apRequest, err
}
// image already exists
return apRequest, nil
}
//Get_image_download_status unimplemented
func (oo *OpenONUAC) Get_image_download_status(ctx context.Context, device *voltha.Device, request *voltha.ImageDownload) (*voltha.ImageDownload, error) {
return nil, errors.New("unImplemented")
}
//Cancel_image_download unimplemented
func (oo *OpenONUAC) Cancel_image_download(ctx context.Context, device *voltha.Device, request *voltha.ImageDownload) (*voltha.ImageDownload, error) {
return nil, errors.New("unImplemented")
}
//Activate_image_update unimplemented
func (oo *OpenONUAC) Activate_image_update(ctx context.Context, device *voltha.Device, apRequest *voltha.ImageDownload) (*voltha.ImageDownload, error) {
if handler := oo.getDeviceHandler(ctx, device.Id, false); handler != nil {
err := handler.doOnuSwUpgrade(ctx, apRequest)
return apRequest, err
}
logger.Warnw(ctx, "no handler found for Onu image activation", log.Fields{"device-id": device.Id})
return apRequest, fmt.Errorf(fmt.Sprintf("handler-not-found-%s", device.Id))
}
//Revert_image_update unimplemented
func (oo *OpenONUAC) Revert_image_update(ctx context.Context, device *voltha.Device, request *voltha.ImageDownload) (*voltha.ImageDownload, error) {
return nil, errors.New("unImplemented")
}
// Enable_port to Enable PON/NNI interface - seems not to be used/required according to python code
func (oo *OpenONUAC) Enable_port(ctx context.Context, deviceID string, port *voltha.Port) error {
return errors.New("unImplemented")
}
// Disable_port to Disable pon/nni interface - seems not to be used/required according to python code
func (oo *OpenONUAC) Disable_port(ctx context.Context, deviceID string, port *voltha.Port) error {
return errors.New("unImplemented")
}
//Child_device_lost - unimplemented
//needed for if update >= 3.1.x
func (oo *OpenONUAC) Child_device_lost(ctx context.Context, deviceID string, pPortNo uint32, onuID uint32) error {
return errors.New("unImplemented")
}
// Start_omci_test unimplemented
func (oo *OpenONUAC) Start_omci_test(ctx context.Context, device *voltha.Device, request *voltha.OmciTestRequest) (*voltha.TestResponse, error) {
return nil, errors.New("unImplemented")
}
// Get_ext_value - unimplemented
func (oo *OpenONUAC) Get_ext_value(ctx context.Context, deviceID string, device *voltha.Device, valueparam voltha.ValueType_Type) (*voltha.ReturnValues, error) {
return nil, errors.New("unImplemented")
}
// Single_get_value_request - unimplemented
func (oo *OpenONUAC) Single_get_value_request(ctx context.Context, request extension.SingleGetValueRequest) (*extension.SingleGetValueResponse, error) {
return nil, errors.New("unImplemented")
}
// Adapter interface required methods ################ end #########
// #################################################################