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/*
* 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"
"fmt"
"time"
"github.com/looplab/fsm"
"github.com/opencord/omci-lib-go"
me "github.com/opencord/omci-lib-go/generated"
"github.com/opencord/voltha-lib-go/v4/pkg/log"
//ic "github.com/opencord/voltha-protos/v4/go/inter_container"
//"github.com/opencord/voltha-protos/v4/go/openflow_13"
)
//lockStateFsm defines the structure for the state machine to lock/unlock the ONU UNI ports via OMCI
type lockStateFsm struct {
pDeviceHandler *deviceHandler
deviceID string
pOmciCC *omciCC
adminState bool
requestEvent OnuDeviceEvent
omciLockResponseReceived chan bool //seperate channel needed for checking UNI port OMCi message responses
pAdaptFsm *AdapterFsm
pLastTxMeInstance *me.ManagedEntity
}
const (
// events of lock/unlock UNI port FSM
uniEvStart = "uniEvStart"
uniEvStartAdmin = "uniEvStartAdmin"
uniEvRxUnisResp = "uniEvRxUnisResp"
uniEvRxOnugResp = "uniEvRxOnugResp"
uniEvTimeoutSimple = "uniEvTimeoutSimple"
uniEvTimeoutUnis = "uniEvTimeoutUnis"
uniEvReset = "uniEvReset"
uniEvRestart = "uniEvRestart"
)
const (
// states of lock/unlock UNI port FSM
uniStDisabled = "uniStDisabled"
uniStStarting = "uniStStarting"
uniStSettingUnis = "uniStSettingUnis"
uniStSettingOnuG = "uniStSettingOnuG"
uniStAdminDone = "uniStAdminDone"
uniStResetting = "uniStResetting"
)
//newLockStateFsm is the 'constructor' for the state machine to lock/unlock the ONU UNI ports via OMCI
func newLockStateFsm(ctx context.Context, apDevOmciCC *omciCC, aAdminState bool, aRequestEvent OnuDeviceEvent,
aName string, apDeviceHandler *deviceHandler, aCommChannel chan Message) *lockStateFsm {
instFsm := &lockStateFsm{
pDeviceHandler: apDeviceHandler,
deviceID: apDeviceHandler.deviceID,
pOmciCC: apDevOmciCC,
adminState: aAdminState,
requestEvent: aRequestEvent,
}
instFsm.pAdaptFsm = NewAdapterFsm(aName, instFsm.deviceID, aCommChannel)
if instFsm.pAdaptFsm == nil {
logger.Errorw(ctx, "LockStateFsm's AdapterFsm could not be instantiated!!", log.Fields{
"device-id": instFsm.deviceID})
return nil
}
if aAdminState { //port locking requested
instFsm.pAdaptFsm.pFsm = fsm.NewFSM(
uniStDisabled,
fsm.Events{
{Name: uniEvStart, Src: []string{uniStDisabled}, Dst: uniStStarting},
{Name: uniEvStartAdmin, Src: []string{uniStStarting}, Dst: uniStSettingUnis},
// the settingUnis state is used for multi ME config for all UNI related ports
// maybe such could be reflected in the state machine as well (port number parametrized)
// but that looks not straightforward here - so we keep it simple here for the beginning(?)
{Name: uniEvRxUnisResp, Src: []string{uniStSettingUnis}, Dst: uniStSettingOnuG},
{Name: uniEvRxOnugResp, Src: []string{uniStSettingOnuG}, Dst: uniStAdminDone},
{Name: uniEvTimeoutSimple, Src: []string{uniStSettingOnuG}, Dst: uniStStarting},
{Name: uniEvTimeoutUnis, Src: []string{uniStSettingUnis}, Dst: uniStStarting},
{Name: uniEvReset, Src: []string{uniStStarting, uniStSettingOnuG, uniStSettingUnis,
uniStAdminDone}, Dst: uniStResetting},
// exceptional treatment for all states except uniStResetting
{Name: uniEvRestart, Src: []string{uniStStarting, uniStSettingOnuG, uniStSettingUnis,
uniStAdminDone, uniStResetting}, Dst: uniStDisabled},
},
fsm.Callbacks{
"enter_state": func(e *fsm.Event) { instFsm.pAdaptFsm.logFsmStateChange(ctx, e) },
("enter_" + uniStStarting): func(e *fsm.Event) { instFsm.enterAdminStartingState(ctx, e) },
("enter_" + uniStSettingOnuG): func(e *fsm.Event) { instFsm.enterSettingOnuGState(ctx, e) },
("enter_" + uniStSettingUnis): func(e *fsm.Event) { instFsm.enterSettingUnisState(ctx, e) },
("enter_" + uniStAdminDone): func(e *fsm.Event) { instFsm.enterAdminDoneState(ctx, e) },
("enter_" + uniStResetting): func(e *fsm.Event) { instFsm.enterResettingState(ctx, e) },
},
)
} else { //port unlocking requested
instFsm.pAdaptFsm.pFsm = fsm.NewFSM(
uniStDisabled,
fsm.Events{
{Name: uniEvStart, Src: []string{uniStDisabled}, Dst: uniStStarting},
{Name: uniEvStartAdmin, Src: []string{uniStStarting}, Dst: uniStSettingOnuG},
{Name: uniEvRxOnugResp, Src: []string{uniStSettingOnuG}, Dst: uniStSettingUnis},
// the settingUnis state is used for multi ME config for all UNI related ports
// maybe such could be reflected in the state machine as well (port number parametrized)
// but that looks not straightforward here - so we keep it simple here for the beginning(?)
{Name: uniEvRxUnisResp, Src: []string{uniStSettingUnis}, Dst: uniStAdminDone},
{Name: uniEvTimeoutSimple, Src: []string{uniStSettingOnuG}, Dst: uniStStarting},
{Name: uniEvTimeoutUnis, Src: []string{uniStSettingUnis}, Dst: uniStStarting},
{Name: uniEvReset, Src: []string{uniStStarting, uniStSettingOnuG, uniStSettingUnis,
uniStAdminDone}, Dst: uniStResetting},
// exceptional treatment for all states except uniStResetting
{Name: uniEvRestart, Src: []string{uniStStarting, uniStSettingOnuG, uniStSettingUnis,
uniStAdminDone, uniStResetting}, Dst: uniStDisabled},
},
fsm.Callbacks{
"enter_state": func(e *fsm.Event) { instFsm.pAdaptFsm.logFsmStateChange(ctx, e) },
("enter_" + uniStStarting): func(e *fsm.Event) { instFsm.enterAdminStartingState(ctx, e) },
("enter_" + uniStSettingOnuG): func(e *fsm.Event) { instFsm.enterSettingOnuGState(ctx, e) },
("enter_" + uniStSettingUnis): func(e *fsm.Event) { instFsm.enterSettingUnisState(ctx, e) },
("enter_" + uniStAdminDone): func(e *fsm.Event) { instFsm.enterAdminDoneState(ctx, e) },
("enter_" + uniStResetting): func(e *fsm.Event) { instFsm.enterResettingState(ctx, e) },
},
)
}
if instFsm.pAdaptFsm.pFsm == nil {
logger.Errorw(ctx, "LockStateFsm's Base FSM could not be instantiated!!", log.Fields{
"device-id": instFsm.deviceID})
return nil
}
logger.Debugw(ctx, "LockStateFsm created", log.Fields{"device-id": instFsm.deviceID})
return instFsm
}
//setSuccessEvent modifies the requested event notified on success
//assumption is that this is only called in the disabled (idle) state of the FSM, hence no sem protection required
func (oFsm *lockStateFsm) setSuccessEvent(aEvent OnuDeviceEvent) {
oFsm.requestEvent = aEvent
}
func (oFsm *lockStateFsm) enterAdminStartingState(ctx context.Context, e *fsm.Event) {
logger.Debugw(ctx, "LockStateFSM start", log.Fields{"in state": e.FSM.Current(),
"device-id": oFsm.deviceID})
// in case the used channel is not yet defined (can be re-used after restarts)
if oFsm.omciLockResponseReceived == nil {
oFsm.omciLockResponseReceived = make(chan bool)
logger.Debug(ctx, "LockStateFSM - OMCI UniLock RxChannel defined")
} else {
// as we may 're-use' this instance of FSM and the connected channel
// make sure there is no 'lingering' request in the already existing channel:
// (simple loop sufficient as we are the only receiver)
for len(oFsm.omciLockResponseReceived) > 0 {
<-oFsm.omciLockResponseReceived
}
}
// start go routine for processing of LockState messages
go oFsm.processOmciLockMessages(ctx)
//let the state machine run forward from here directly
pLockStateAFsm := oFsm.pAdaptFsm
if pLockStateAFsm != nil {
// obviously calling some FSM event here directly does not work - so trying to decouple it ...
go func(a_pAFsm *AdapterFsm) {
if a_pAFsm != nil && a_pAFsm.pFsm != nil {
_ = a_pAFsm.pFsm.Event(uniEvStartAdmin)
}
}(pLockStateAFsm)
}
}
func (oFsm *lockStateFsm) enterSettingOnuGState(ctx context.Context, e *fsm.Event) {
var omciAdminState uint8 = 1 //default locked
if !oFsm.adminState {
omciAdminState = 0
}
logger.Debugw(ctx, "LockStateFSM Tx Set::ONU-G:admin", log.Fields{
"omciAdmin": omciAdminState, "in state": e.FSM.Current(), "device-id": oFsm.deviceID})
requestedAttributes := me.AttributeValueMap{"AdministrativeState": omciAdminState}
meInstance := oFsm.pOmciCC.sendSetOnuGLS(log.WithSpanFromContext(context.TODO(), ctx), ConstDefaultOmciTimeout, true,
requestedAttributes, oFsm.pAdaptFsm.commChan)
//accept also nil as (error) return value for writing to LastTx
// - this avoids misinterpretation of new received OMCI messages
// we might already abort the processing with nil here, but maybe some auto-recovery may be tried
// - may be improved later, for now we just handle it with the Rx timeout or missing next event (stick in state)
oFsm.pLastTxMeInstance = meInstance
}
func (oFsm *lockStateFsm) enterSettingUnisState(ctx context.Context, e *fsm.Event) {
logger.Debugw(ctx, "LockStateFSM - starting PPTP config loop", log.Fields{
"in state": e.FSM.Current(), "device-id": oFsm.deviceID, "LockState": oFsm.adminState})
go oFsm.performUniPortAdminSet(ctx)
}
func (oFsm *lockStateFsm) enterAdminDoneState(ctx context.Context, e *fsm.Event) {
logger.Debugw(ctx, "LockStateFSM", log.Fields{"send notification to core in State": e.FSM.Current(), "device-id": oFsm.deviceID})
//use DeviceHandler event notification directly, no need/support to update DeviceEntryState for lock/unlock
oFsm.pDeviceHandler.deviceProcStatusUpdate(ctx, oFsm.requestEvent)
//let's reset the state machine in order to release all resources now
pLockStateAFsm := oFsm.pAdaptFsm
if pLockStateAFsm != nil {
// obviously calling some FSM event here directly does not work - so trying to decouple it ...
go func(a_pAFsm *AdapterFsm) {
if a_pAFsm != nil && a_pAFsm.pFsm != nil {
_ = a_pAFsm.pFsm.Event(uniEvReset)
}
}(pLockStateAFsm)
}
}
func (oFsm *lockStateFsm) enterResettingState(ctx context.Context, e *fsm.Event) {
logger.Debugw(ctx, "LockStateFSM resetting", log.Fields{"device-id": oFsm.deviceID})
pLockStateAFsm := oFsm.pAdaptFsm
if pLockStateAFsm != nil {
// abort running message processing
fsmAbortMsg := Message{
Type: TestMsg,
Data: TestMessage{
TestMessageVal: AbortMessageProcessing,
},
}
pLockStateAFsm.commChan <- fsmAbortMsg
//try to restart the FSM to 'disabled'
// see DownloadedState: decouple event transfer
go func(a_pAFsm *AdapterFsm) {
if a_pAFsm != nil && a_pAFsm.pFsm != nil {
_ = a_pAFsm.pFsm.Event(uniEvRestart)
}
}(pLockStateAFsm)
oFsm.pLastTxMeInstance = nil
}
}
func (oFsm *lockStateFsm) processOmciLockMessages(ctx context.Context) {
logger.Debugw(ctx, "Start LockStateFsm Msg processing", log.Fields{"for device-id": oFsm.deviceID})
loop:
for {
// case <-ctx.Done():
// logger.Info(ctx,"MibSync Msg", log.Fields{"Message handling canceled via context for device-id": oFsm.deviceID})
// break loop
message, ok := <-oFsm.pAdaptFsm.commChan
if !ok {
logger.Info(ctx, "LockStateFsm Rx Msg - could not read from channel", log.Fields{"device-id": oFsm.deviceID})
// but then we have to ensure a restart of the FSM as well - as exceptional procedure
_ = oFsm.pAdaptFsm.pFsm.Event(uniEvRestart)
break loop
}
logger.Debugw(ctx, "LockStateFsm Rx Msg", log.Fields{"device-id": oFsm.deviceID})
switch message.Type {
case TestMsg:
msg, _ := message.Data.(TestMessage)
if msg.TestMessageVal == AbortMessageProcessing {
logger.Debugw(ctx, "LockStateFsm abort ProcessMsg", log.Fields{"for device-id": oFsm.deviceID})
break loop
}
logger.Warnw(ctx, "LockStateFsm unknown TestMessage", log.Fields{"device-id": oFsm.deviceID, "MessageVal": msg.TestMessageVal})
case OMCI:
msg, _ := message.Data.(OmciMessage)
oFsm.handleOmciLockStateMessage(ctx, msg)
default:
logger.Warn(ctx, "LockStateFsm Rx unknown message", log.Fields{"device-id": oFsm.deviceID,
"message.Type": message.Type})
}
}
logger.Debugw(ctx, "End LockStateFsm Msg processing", log.Fields{"device-id": oFsm.deviceID})
}
func (oFsm *lockStateFsm) handleOmciLockStateMessage(ctx context.Context, msg OmciMessage) {
logger.Debugw(ctx, "Rx OMCI LockStateFsm Msg", log.Fields{"device-id": oFsm.deviceID,
"msgType": msg.OmciMsg.MessageType})
if msg.OmciMsg.MessageType == omci.SetResponseType {
msgLayer := (*msg.OmciPacket).Layer(omci.LayerTypeSetResponse)
if msgLayer == nil {
logger.Errorw(ctx, "LockStateFsm - Omci Msg layer could not be detected for SetResponse",
log.Fields{"device-id": oFsm.deviceID})
return
}
msgObj, msgOk := msgLayer.(*omci.SetResponse)
if !msgOk {
logger.Errorw(ctx, "LockStateFsm - Omci Msg layer could not be assigned for SetResponse",
log.Fields{"device-id": oFsm.deviceID})
return
}
logger.Debugw(ctx, "LockStateFsm SetResponse Data", log.Fields{"device-id": oFsm.deviceID, "data-fields": msgObj})
if msgObj.Result != me.Success {
logger.Errorw(ctx, "LockStateFsm - Omci SetResponse Error - later: drive FSM to abort state ?", log.Fields{"Error": msgObj.Result})
// possibly force FSM into abort or ignore some errors for some messages? store error for mgmt display?
return
}
// compare comments above for CreateResponse (apply also here ...)
if msgObj.EntityClass == oFsm.pLastTxMeInstance.GetClassID() &&
msgObj.EntityInstance == oFsm.pLastTxMeInstance.GetEntityID() {
//store the created ME into DB //TODO??? obviously the Python code does not store the config ...
// if, then something like:
//oFsm.pOnuDB.StoreMe(msgObj)
switch oFsm.pLastTxMeInstance.GetName() {
case "OnuG":
{ // let the FSM proceed ...
_ = oFsm.pAdaptFsm.pFsm.Event(uniEvRxOnugResp)
}
case "PhysicalPathTerminationPointEthernetUni", "VEIP":
{ // let the PPTP init proceed by stopping the wait function
oFsm.omciLockResponseReceived <- true
}
}
}
} else {
logger.Errorw(ctx, "LockStateFsm - Rx OMCI unhandled MsgType", log.Fields{"omciMsgType": msg.OmciMsg.MessageType})
return
}
}
func (oFsm *lockStateFsm) performUniPortAdminSet(ctx context.Context) {
var omciAdminState uint8 = 1 //default locked
if !oFsm.adminState {
omciAdminState = 0
}
//set PPTPEthUni or VEIP AdminState
requestedAttributes := me.AttributeValueMap{"AdministrativeState": omciAdminState}
for uniNo, uniPort := range oFsm.pOmciCC.pBaseDeviceHandler.uniEntityMap {
logger.Debugw(ctx, "Setting PPTP admin state", log.Fields{
"device-id": oFsm.deviceID, "for PortNo": uniNo})
var meInstance *me.ManagedEntity
if uniPort.portType == uniPPTP {
meInstance = oFsm.pOmciCC.sendSetPptpEthUniLS(log.WithSpanFromContext(context.TODO(), ctx), uniPort.entityID, ConstDefaultOmciTimeout,
true, requestedAttributes, oFsm.pAdaptFsm.commChan)
oFsm.pLastTxMeInstance = meInstance
} else if uniPort.portType == uniVEIP {
meInstance = oFsm.pOmciCC.sendSetVeipLS(log.WithSpanFromContext(context.TODO(), ctx), uniPort.entityID, ConstDefaultOmciTimeout,
true, requestedAttributes, oFsm.pAdaptFsm.commChan)
oFsm.pLastTxMeInstance = meInstance
} else {
logger.Warnw(ctx, "Unsupported PPTP type - skip",
log.Fields{"device-id": oFsm.deviceID, "Port": uniNo})
continue
}
//verify response
err := oFsm.waitforOmciResponse(ctx, meInstance)
if err != nil {
logger.Errorw(ctx, "PPTP Admin State set failed, aborting LockState set!",
log.Fields{"device-id": oFsm.deviceID, "Port": uniNo})
_ = oFsm.pAdaptFsm.pFsm.Event(uniEvReset)
return
}
} //for all UNI ports
// if Config has been done for all UNI related instances let the FSM proceed
// while we did not check here, if there is some port at all - !?
logger.Infow(ctx, "PPTP config loop finished", log.Fields{"device-id": oFsm.deviceID})
_ = oFsm.pAdaptFsm.pFsm.Event(uniEvRxUnisResp)
}
func (oFsm *lockStateFsm) waitforOmciResponse(ctx context.Context, apMeInstance *me.ManagedEntity) error {
select {
// maybe be also some outside cancel (but no context modeled for the moment ...)
// case <-ctx.Done():
// logger.Infow(ctx,"LockState-bridge-init message reception canceled", log.Fields{"for device-id": oFsm.deviceID})
case <-time.After(30 * time.Second): //3s was detected to be to less in 8*8 bbsim test with debug Info/Debug
logger.Warnw(ctx, "LockStateFSM uni-set timeout", log.Fields{"for device-id": oFsm.deviceID})
return fmt.Errorf("lockStateFsm uni-set timeout for device-id %s", oFsm.deviceID)
case success := <-oFsm.omciLockResponseReceived:
if success {
logger.Debug(ctx, "LockStateFSM uni-set response received")
return nil
}
// should not happen so far
logger.Warnw(ctx, "LockStateFSM uni-set response error", log.Fields{"for device-id": oFsm.deviceID})
return fmt.Errorf("lockStateFsm uni-set responseError for device-id %s", oFsm.deviceID)
}
}