| /* |
| * Copyright 2017-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 nbi |
| |
| import ( |
| "context" |
| "errors" |
| "strconv" |
| "strings" |
| |
| "github.com/golang/protobuf/ptypes/empty" |
| "github.com/google/gopacket" |
| "github.com/google/gopacket/layers" |
| "github.com/opencord/voltha/ponsim/v2/common" |
| "github.com/opencord/voltha/ponsim/v2/core" |
| "github.com/opencord/voltha/protos/go/voltha" |
| "github.com/sirupsen/logrus" |
| "google.golang.org/grpc" |
| ) |
| |
| type PonSimHandler struct { |
| device core.PonSimInterface |
| } |
| |
| /* |
| NewPonSimHandler instantiates a handler for a PonSim device |
| */ |
| func NewPonSimHandler(device core.PonSimInterface) *PonSimHandler { |
| var handler *PonSimHandler |
| handler = &PonSimHandler{device: device} |
| return handler |
| } |
| |
| /* |
| SendFrame handles and forwards EGRESS packets (i.e. VOLTHA to OLT) |
| */ |
| func (handler *PonSimHandler) SendFrame(ctx context.Context, data *voltha.PonSimFrame) (*empty.Empty, error) { |
| frame := gopacket.NewPacket(data.Payload, layers.LayerTypeEthernet, gopacket.Default) |
| |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "out_port": int(data.OutPort), |
| "frame": frame.Dump(), |
| }).Info("Constructed frame") |
| |
| handler.device.SendOut(int(data.OutPort), frame) |
| |
| out := new(empty.Empty) |
| return out, nil |
| } |
| |
| /* |
| ReceiveFrames handles a stream of INGRESS packets (i.e. OLT to VOLTHA) |
| */ |
| func (handler *PonSimHandler) ReceiveFrames(empty *empty.Empty, stream voltha.PonSim_ReceiveFramesServer) error { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| }).Info("start-receiving-frames") |
| |
| if _, ok := (handler.device).(*core.PonSimOltDevice); ok { |
| var data []byte |
| var ok bool |
| |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "device": (handler.device).(*core.PonSimOltDevice), |
| }).Info("receiving-frames-from-olt-device") |
| |
| for { |
| select { |
| case data, ok = <-(handler.device).(*core.PonSimOltDevice).GetOutgoing(): |
| if ok { |
| frame := gopacket.NewPacket(data, layers.LayerTypeEthernet, gopacket.Default) |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "frame": frame, |
| }).Info("Received incoming data") |
| |
| frameBytes := &voltha.PonSimFrame{Id: handler.device.GetAddress(), Payload: data} |
| if err := stream.Send(frameBytes); err != nil { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "frame": frame, |
| "error": err, |
| }).Error("Failed to send incoming data") |
| return err |
| } |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "frame": frame, |
| }).Info("Sent incoming data") |
| |
| } else { |
| return errors.New("incoming data channel has closed") |
| } |
| } |
| } |
| |
| } else { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| }).Error("Not handling an OLT device") |
| } |
| |
| return nil |
| } |
| |
| /* |
| GetDeviceInfo returns information of a PonSim device (OLT or ONU) |
| */ |
| func (handler *PonSimHandler) GetDeviceInfo( |
| ctx context.Context, |
| empty *empty.Empty, |
| ) (*voltha.PonSimDeviceInfo, error) { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| }).Info("Getting device information") |
| |
| out := &voltha.PonSimDeviceInfo{} |
| |
| // Check which device type we're currently handling |
| if _, ok := (handler.device).(*core.PonSimOltDevice); ok { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| }).Debug("Handling OLT device") |
| onus := (handler.device).(*core.PonSimOltDevice).GetOnus() |
| for k := range onus { |
| out.Onus = append( |
| out.Onus, |
| &voltha.PonSimOnuDeviceInfo { |
| UniPort: k, |
| SerialNumber: onus[k].Device.SerialNumber, |
| }, |
| ) |
| } |
| out.NniPort = 2 |
| } else { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| }).Debug("Handling ONU/OTHER device") |
| } |
| |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "result": out, |
| }).Info("Device information") |
| |
| return out, nil |
| } |
| |
| /* |
| UpdateFlowTable populates and cleans up the flows for a PonSim device |
| */ |
| func (handler *PonSimHandler) UpdateFlowTable( |
| ctx context.Context, |
| table *voltha.FlowTable, |
| ) (*empty.Empty, error) { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "table": table, |
| }).Info("Updating flows") |
| |
| if _, ok := (handler.device).(*core.PonSimOltDevice); ok { |
| if table.Port == 0 { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "port": table.Port, |
| }).Debug("Updating OLT flows") |
| |
| if err := (handler.device).(*core.PonSimOltDevice).InstallFlows(ctx, table.Flows); err != nil { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "error": err.Error(), |
| "flows": table.Flows, |
| }).Error("Problem updating flows on OLT") |
| } else { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| }).Debug("Updated OLT flows") |
| } |
| |
| } else { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "port": table.Port, |
| }).Debug("Updating ONU flows") |
| |
| if child, ok := (handler.device).(*core.PonSimOltDevice).GetOnus()[table.Port]; ok { |
| |
| host := strings.Join([]string{ |
| child.Device.Address, |
| strconv.Itoa(int(child.Device.Port)), |
| }, ":") |
| |
| conn, err := grpc.Dial( |
| host, |
| grpc.WithInsecure(), |
| ) |
| if err != nil { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "error": err.Error(), |
| }).Error("GRPC Connection problem") |
| } |
| defer conn.Close() |
| client := voltha.NewPonSimClient(conn) |
| |
| if _, err = client.UpdateFlowTable(ctx, table); err != nil { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "host": host, |
| "error": err.Error(), |
| }).Error("Problem forwarding update request to ONU") |
| } |
| } else { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "port": table.Port, |
| }).Warn("Unable to find ONU") |
| } |
| |
| } |
| } else if _, ok := (handler.device).(*core.PonSimOnuDevice); ok { |
| if err := (handler.device).(*core.PonSimOnuDevice).InstallFlows(ctx, table.Flows); err != nil { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "error": err.Error(), |
| "flows": table.Flows, |
| }).Error("Problem updating flows on ONU") |
| } else { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| }).Debug("Updated ONU flows") |
| } |
| } else { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "port": table.Port, |
| }).Warn("Unknown device") |
| } |
| |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "table": table, |
| }).Info("Updated flows") |
| |
| out := new(empty.Empty) |
| return out, nil |
| } |
| |
| /* |
| GetStats retrieves statistics for a PonSim device |
| */ |
| func (handler *PonSimHandler) GetStats( |
| ctx context.Context, |
| empty *empty.Empty, |
| ) (*voltha.PonSimMetrics, error) { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| }).Info("Retrieving stats") |
| |
| var metrics *voltha.PonSimMetrics = new(voltha.PonSimMetrics) |
| |
| if olt, ok := (handler.device).(*core.PonSimOltDevice); ok { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "olt": olt, |
| }).Debug("Retrieving stats for OLT") |
| |
| // Get stats for current device |
| |
| // Loop through each onus to get stats from those as well? |
| // send grpc request to each onu |
| for _, child := range (handler.device).(*core.PonSimOltDevice).GetOnus() { |
| |
| host := strings.Join([]string{child.Device.Address, strconv.Itoa(int(child.Device.Port))}, ":") |
| conn, err := grpc.Dial( |
| host, |
| grpc.WithInsecure(), |
| ) |
| if err != nil { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "error": err.Error(), |
| }).Error("GRPC Connection problem") |
| } |
| defer conn.Close() |
| client := voltha.NewPonSimClient(conn) |
| |
| if _, err = client.GetStats(ctx, empty); err != nil { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "host": host, |
| "error": err.Error(), |
| }).Error("Problem forwarding stats request to ONU") |
| } |
| } |
| metrics = (handler.device).(*core.PonSimOltDevice).Counter.MakeProto() |
| |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "metrics": metrics, |
| }).Debug("OLT Metrics") |
| |
| } else if onu, ok := (handler.device).(*core.PonSimOnuDevice); ok { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| "onu": onu, |
| }).Debug("Retrieving stats for ONU") |
| } else { |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| }).Warn("Unknown device") |
| } |
| |
| common.Logger().WithFields(logrus.Fields{ |
| "handler": handler, |
| }).Info("Retrieved stats") |
| |
| return metrics, nil |
| } |