blob: 877fcb4bf2a4ac6639e6ffed4cf31fddacee0369 [file] [log] [blame]
/*
* Copyright 2018-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 core
import (
"context"
"errors"
"github.com/golang-collections/go-datastructures/queue"
"github.com/golang/protobuf/ptypes/empty"
da "github.com/opencord/voltha-go/common/core/northbound/grpc"
"github.com/opencord/voltha-go/common/log"
"github.com/opencord/voltha-go/protos/common"
"github.com/opencord/voltha-go/protos/openflow_13"
"github.com/opencord/voltha-go/protos/voltha"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/metadata"
"google.golang.org/grpc/status"
"io"
"time"
)
//TODO: Move this Tag into the proto file
const OF_CONTROLLER_TAG= "voltha_backend_name"
//const MAX_RESPONSE_TIME = int64(500) // milliseconds
const (
IMAGE_DOWNLOAD = iota
CANCEL_IMAGE_DOWNLOAD = iota
ACTIVATE_IMAGE = iota
REVERT_IMAGE = iota
)
type APIHandler struct {
deviceMgr *DeviceManager
logicalDeviceMgr *LogicalDeviceManager
adapterMgr *AdapterManager
packetInQueue *queue.Queue
coreInCompetingMode bool
longRunningRequestTimeout int64
defaultRequestTimeout int64
da.DefaultAPIHandler
}
func NewAPIHandler(deviceMgr *DeviceManager, lDeviceMgr *LogicalDeviceManager, adapterMgr *AdapterManager, inCompetingMode bool, longRunningRequestTimeout int64, defaultRequestTimeout int64 ) *APIHandler {
handler := &APIHandler{
deviceMgr: deviceMgr,
logicalDeviceMgr: lDeviceMgr,
adapterMgr:adapterMgr,
coreInCompetingMode:inCompetingMode,
longRunningRequestTimeout:longRunningRequestTimeout,
defaultRequestTimeout:defaultRequestTimeout,
// TODO: Figure out what the 'hint' parameter to queue.New does
packetInQueue: queue.New(10),
}
return handler
}
// isTestMode is a helper function to determine a function is invoked for testing only
func isTestMode(ctx context.Context) bool {
md, _ := metadata.FromIncomingContext(ctx)
_, exist := md[common.TestModeKeys_api_test.String()]
return exist
}
// This function attempts to extract the serial number from the request metadata
// and create a KV transaction for that serial number for the current core.
func (handler *APIHandler) createKvTransaction(ctx context.Context) (*KVTransaction, error) {
var (
err error
ok bool
md metadata.MD
serNum []string
)
if md, ok = metadata.FromIncomingContext(ctx); !ok {
err = errors.New("metadata-not-found")
} else if serNum, ok = md["voltha_serial_number"]; !ok {
err = errors.New("serial-number-not-found")
}
if !ok {
log.Error(err)
return nil, err
}
// Create KV transaction
txn := NewKVTransaction(serNum[0])
return txn, nil
}
// isOFControllerRequest is a helper function to determine if a request was initiated
// from the OpenFlow controller (or its proxy, e.g. OFAgent)
func isOFControllerRequest(ctx context.Context) bool {
if md, ok := metadata.FromIncomingContext(ctx); ok {
// Metadata in context
if _, ok = md[OF_CONTROLLER_TAG]; ok {
// OFAgent field in metadata
return true
}
}
return false
}
// competeForTransaction is a helper function to determine whether every request needs to compete with another
// Core to execute the request
func (handler *APIHandler) competeForTransaction() bool {
return handler.coreInCompetingMode
}
func (handler *APIHandler) acquireTransaction(ctx context.Context, maxTimeout ...int64) (*KVTransaction, error) {
timeout := handler.defaultRequestTimeout
if len(maxTimeout) > 0 {
timeout = maxTimeout[0]
}
log.Debugw("transaction-timeout", log.Fields{"timeout": timeout})
txn, err := handler.createKvTransaction(ctx)
if txn == nil {
return nil, err
} else if txn.Acquired(timeout) {
return txn, nil
} else {
return nil, errors.New("failed-to-seize-request")
}
}
// waitForNilResponseOnSuccess is a helper function to wait for a response on channel ch where an nil
// response is expected in a successful scenario
func waitForNilResponseOnSuccess(ctx context.Context, ch chan interface{}) (*empty.Empty, error) {
select {
case res := <-ch:
if res == nil {
return new(empty.Empty), nil
} else if err, ok := res.(error); ok {
return new(empty.Empty), err
} else {
log.Warnw("unexpected-return-type", log.Fields{"result": res})
err = status.Errorf(codes.Internal, "%s", res)
return new(empty.Empty), err
}
case <-ctx.Done():
log.Debug("client-timeout")
return nil, ctx.Err()
}
}
func (handler *APIHandler) UpdateLogLevel(ctx context.Context, logging *voltha.Logging) (*empty.Empty, error) {
log.Debugw("UpdateLogLevel-request", log.Fields{"package": logging.PackageName, "intval": int(logging.Level)})
out := new(empty.Empty)
if logging.PackageName == "" {
log.SetAllLogLevel(int(logging.Level))
} else {
log.SetPackageLogLevel(logging.PackageName, int(logging.Level))
}
return out, nil
}
func (handler *APIHandler) EnableLogicalDevicePort(ctx context.Context, id *voltha.LogicalPortId) (*empty.Empty, error) {
log.Debugw("EnableLogicalDevicePort-request", log.Fields{"id": id, "test": common.TestModeKeys_api_test.String()})
if isTestMode(ctx) {
out := new(empty.Empty)
return out, nil
}
if handler.competeForTransaction() {
if txn, err := handler.acquireTransaction(ctx); err != nil {
return new(empty.Empty), err
} else {
defer txn.Close()
}
}
ch := make(chan interface{})
defer close(ch)
go handler.logicalDeviceMgr.enableLogicalPort(ctx, id, ch)
return waitForNilResponseOnSuccess(ctx, ch)
}
func (handler *APIHandler) DisableLogicalDevicePort(ctx context.Context, id *voltha.LogicalPortId) (*empty.Empty, error) {
log.Debugw("DisableLogicalDevicePort-request", log.Fields{"id": id, "test": common.TestModeKeys_api_test.String()})
if isTestMode(ctx) {
out := new(empty.Empty)
return out, nil
}
if handler.competeForTransaction() {
if txn, err := handler.acquireTransaction(ctx); err != nil {
return new(empty.Empty), err
} else {
defer txn.Close()
}
}
ch := make(chan interface{})
defer close(ch)
go handler.logicalDeviceMgr.disableLogicalPort(ctx, id, ch)
return waitForNilResponseOnSuccess(ctx, ch)
}
func (handler *APIHandler) UpdateLogicalDeviceFlowTable(ctx context.Context, flow *openflow_13.FlowTableUpdate) (*empty.Empty, error) {
log.Debugw("UpdateLogicalDeviceFlowTable-request", log.Fields{"flow": flow, "test": common.TestModeKeys_api_test.String()})
if isTestMode(ctx) {
out := new(empty.Empty)
return out, nil
}
if handler.competeForTransaction() {
if !isOFControllerRequest(ctx) { // No need to acquire the transaction as request is sent to one core only
if txn, err := handler.acquireTransaction(ctx); err != nil {
return new(empty.Empty), err
} else {
defer txn.Close()
}
}
}
ch := make(chan interface{})
defer close(ch)
go handler.logicalDeviceMgr.updateFlowTable(ctx, flow.Id, flow.FlowMod, ch)
return waitForNilResponseOnSuccess(ctx, ch)
}
func (handler *APIHandler) UpdateLogicalDeviceFlowGroupTable(ctx context.Context, flow *openflow_13.FlowGroupTableUpdate) (*empty.Empty, error) {
log.Debugw("UpdateLogicalDeviceFlowGroupTable-request", log.Fields{"flow": flow, "test": common.TestModeKeys_api_test.String()})
if isTestMode(ctx) {
out := new(empty.Empty)
return out, nil
}
if handler.competeForTransaction() {
if !isOFControllerRequest(ctx) { // No need to acquire the transaction as request is sent to one core only
if txn, err := handler.acquireTransaction(ctx); err != nil {
return new(empty.Empty), err
} else {
defer txn.Close()
}
}
}
ch := make(chan interface{})
defer close(ch)
go handler.logicalDeviceMgr.updateGroupTable(ctx, flow.Id, flow.GroupMod, ch)
return waitForNilResponseOnSuccess(ctx, ch)
}
// GetDevice must be implemented in the read-only containers - should it also be implemented here?
func (handler *APIHandler) GetDevice(ctx context.Context, id *voltha.ID) (*voltha.Device, error) {
log.Debugw("GetDevice-request", log.Fields{"id": id})
return handler.deviceMgr.GetDevice(id.Id)
}
// GetDevice must be implemented in the read-only containers - should it also be implemented here?
func (handler *APIHandler) ListDevices(ctx context.Context, empty *empty.Empty) (*voltha.Devices, error) {
log.Debug("ListDevices")
return handler.deviceMgr.ListDevices()
}
// ListDeviceIds returns the list of device ids managed by a voltha core
func (handler *APIHandler) ListDeviceIds(ctx context.Context, empty *empty.Empty) (*voltha.IDs, error) {
log.Debug("ListDeviceIDs")
if isTestMode(ctx) {
out := &voltha.IDs{Items: make([]*voltha.ID, 0)}
return out, nil
}
return handler.deviceMgr.ListDeviceIds()
}
//ReconcileDevices is a request to a voltha core to managed a list of devices based on their IDs
func (handler *APIHandler) ReconcileDevices(ctx context.Context, ids *voltha.IDs) (*empty.Empty, error) {
log.Debug("ReconcileDevices")
if isTestMode(ctx) {
out := new(empty.Empty)
return out, nil
}
// No need to grab a transaction as this request is core specific
ch := make(chan interface{})
defer close(ch)
go handler.deviceMgr.ReconcileDevices(ctx, ids, ch)
return waitForNilResponseOnSuccess(ctx, ch)
}
// GetLogicalDevice must be implemented in the read-only containers - should it also be implemented here?
func (handler *APIHandler) GetLogicalDevice(ctx context.Context, id *voltha.ID) (*voltha.LogicalDevice, error) {
log.Debugw("GetLogicalDevice-request", log.Fields{"id": id})
return handler.logicalDeviceMgr.getLogicalDevice(id.Id)
}
// ListLogicalDevices must be implemented in the read-only containers - should it also be implemented here?
func (handler *APIHandler) ListLogicalDevices(ctx context.Context, empty *empty.Empty) (*voltha.LogicalDevices, error) {
log.Debug("ListLogicalDevices")
return handler.logicalDeviceMgr.listLogicalDevices()
}
// ListAdapters returns the contents of all adapters known to the system
func (handler *APIHandler) ListAdapters(ctx context.Context, empty *empty.Empty) (*voltha.Adapters, error) {
log.Debug("ListDevices")
return handler.adapterMgr.listAdapters(ctx)
}
// ListLogicalDevicePorts must be implemented in the read-only containers - should it also be implemented here?
func (handler *APIHandler) ListLogicalDevicePorts(ctx context.Context, id *voltha.ID) (*voltha.LogicalPorts, error) {
log.Debugw("ListLogicalDevicePorts", log.Fields{"logicaldeviceid": id})
return handler.logicalDeviceMgr.ListLogicalDevicePorts(ctx, id.Id)
}
// CreateDevice creates a new parent device in the data model
func (handler *APIHandler) CreateDevice(ctx context.Context, device *voltha.Device) (*voltha.Device, error) {
log.Debugw("createdevice", log.Fields{"device": *device})
if isTestMode(ctx) {
return &voltha.Device{Id: device.Id}, nil
}
if handler.competeForTransaction() {
if txn, err := handler.acquireTransaction(ctx); err != nil {
return &voltha.Device{}, err
} else {
defer txn.Close()
}
}
ch := make(chan interface{})
defer close(ch)
go handler.deviceMgr.createDevice(ctx, device, ch)
select {
case res := <-ch:
if res != nil {
if err, ok := res.(error); ok {
return &voltha.Device{}, err
}
if d, ok := res.(*voltha.Device); ok {
return d, nil
}
}
log.Warnw("create-device-unexpected-return-type", log.Fields{"result": res})
err := status.Errorf(codes.Internal, "%s", res)
return &voltha.Device{}, err
case <-ctx.Done():
log.Debug("createdevice-client-timeout")
return nil, ctx.Err()
}
}
// EnableDevice activates a device by invoking the adopt_device API on the appropriate adapter
func (handler *APIHandler) EnableDevice(ctx context.Context, id *voltha.ID) (*empty.Empty, error) {
log.Debugw("enabledevice", log.Fields{"id": id})
if isTestMode(ctx) {
return new(empty.Empty), nil
}
if handler.competeForTransaction() {
if txn, err := handler.acquireTransaction(ctx, handler.longRunningRequestTimeout); err != nil {
return new(empty.Empty), err
} else {
defer txn.Close()
}
}
ch := make(chan interface{})
defer close(ch)
go handler.deviceMgr.enableDevice(ctx, id, ch)
return waitForNilResponseOnSuccess(ctx, ch)
}
// DisableDevice disables a device along with any child device it may have
func (handler *APIHandler) DisableDevice(ctx context.Context, id *voltha.ID) (*empty.Empty, error) {
log.Debugw("disabledevice-request", log.Fields{"id": id})
if isTestMode(ctx) {
return new(empty.Empty), nil
}
if handler.competeForTransaction() {
if txn, err := handler.acquireTransaction(ctx); err != nil {
return new(empty.Empty), err
} else {
defer txn.Close()
}
}
ch := make(chan interface{})
defer close(ch)
go handler.deviceMgr.disableDevice(ctx, id, ch)
return waitForNilResponseOnSuccess(ctx, ch)
}
//RebootDevice invoked the reboot API to the corresponding adapter
func (handler *APIHandler) RebootDevice(ctx context.Context, id *voltha.ID) (*empty.Empty, error) {
log.Debugw("rebootDevice-request", log.Fields{"id": id})
if isTestMode(ctx) {
return new(empty.Empty), nil
}
if handler.competeForTransaction() {
if txn, err := handler.acquireTransaction(ctx); err != nil {
return new(empty.Empty), err
} else {
defer txn.Close()
}
}
ch := make(chan interface{})
defer close(ch)
go handler.deviceMgr.rebootDevice(ctx, id, ch)
return waitForNilResponseOnSuccess(ctx, ch)
}
// DeleteDevice removes a device from the data model
func (handler *APIHandler) DeleteDevice(ctx context.Context, id *voltha.ID) (*empty.Empty, error) {
log.Debugw("deletedevice-request", log.Fields{"id": id})
if isTestMode(ctx) {
return new(empty.Empty), nil
}
if handler.competeForTransaction() {
if txn, err := handler.acquireTransaction(ctx); err != nil {
return new(empty.Empty), err
} else {
defer txn.Close()
}
}
ch := make(chan interface{})
defer close(ch)
go handler.deviceMgr.deleteDevice(ctx, id, ch)
return waitForNilResponseOnSuccess(ctx, ch)
}
// processImageRequest is a helper method to execute an image download request
func (handler *APIHandler) processImageRequest(ctx context.Context, img *voltha.ImageDownload, requestType int) (*common.OperationResp, error) {
log.Debugw("processImageDownload", log.Fields{"img": *img, "requestType": requestType})
if isTestMode(ctx) {
resp := &common.OperationResp{Code: common.OperationResp_OPERATION_SUCCESS}
return resp, nil
}
if handler.competeForTransaction() {
if txn, err := handler.acquireTransaction(ctx); err != nil {
return &common.OperationResp{}, err
} else {
defer txn.Close()
}
}
failedresponse := &common.OperationResp{Code:voltha.OperationResp_OPERATION_FAILURE}
ch := make(chan interface{})
defer close(ch)
switch requestType {
case IMAGE_DOWNLOAD:
go handler.deviceMgr.downloadImage(ctx, img, ch)
case CANCEL_IMAGE_DOWNLOAD:
go handler.deviceMgr.cancelImageDownload(ctx, img, ch)
case ACTIVATE_IMAGE:
go handler.deviceMgr.activateImage(ctx, img, ch)
case REVERT_IMAGE:
go handler.deviceMgr.revertImage(ctx, img, ch)
default:
log.Warn("invalid-request-type", log.Fields{"requestType": requestType})
return failedresponse, status.Errorf(codes.InvalidArgument, "%d", requestType)
}
select {
case res := <-ch:
if res != nil {
if err, ok := res.(error); ok {
return failedresponse, err
}
if opResp, ok := res.(*common.OperationResp); ok {
return opResp, nil
}
}
log.Warnw("download-image-unexpected-return-type", log.Fields{"result": res})
return failedresponse, status.Errorf(codes.Internal, "%s", res)
case <-ctx.Done():
log.Debug("downloadImage-client-timeout")
return nil, ctx.Err()
}
}
func (handler *APIHandler) DownloadImage(ctx context.Context, img *voltha.ImageDownload) (*common.OperationResp, error) {
log.Debugw("DownloadImage-request", log.Fields{"img": *img})
if isTestMode(ctx) {
resp := &common.OperationResp{Code: common.OperationResp_OPERATION_SUCCESS}
return resp, nil
}
return handler.processImageRequest(ctx, img, IMAGE_DOWNLOAD)
}
func (handler *APIHandler) CancelImageDownload(ctx context.Context, img *voltha.ImageDownload) (*common.OperationResp, error) {
log.Debugw("cancelImageDownload-request", log.Fields{"img": *img})
if isTestMode(ctx) {
resp := &common.OperationResp{Code: common.OperationResp_OPERATION_SUCCESS}
return resp, nil
}
return handler.processImageRequest(ctx, img, CANCEL_IMAGE_DOWNLOAD)
}
func (handler *APIHandler) ActivateImageUpdate(ctx context.Context, img *voltha.ImageDownload) (*common.OperationResp, error) {
log.Debugw("activateImageUpdate-request", log.Fields{"img": *img})
if isTestMode(ctx) {
resp := &common.OperationResp{Code: common.OperationResp_OPERATION_SUCCESS}
return resp, nil
}
return handler.processImageRequest(ctx, img, ACTIVATE_IMAGE)
}
func (handler *APIHandler) RevertImageUpdate(ctx context.Context, img *voltha.ImageDownload) (*common.OperationResp, error) {
log.Debugw("revertImageUpdate-request", log.Fields{"img": *img})
if isTestMode(ctx) {
resp := &common.OperationResp{Code: common.OperationResp_OPERATION_SUCCESS}
return resp, nil
}
return handler.processImageRequest(ctx, img, REVERT_IMAGE)
}
func (handler *APIHandler) GetImageDownloadStatus(ctx context.Context, img *voltha.ImageDownload) (*voltha.ImageDownload, error) {
log.Debugw("getImageDownloadStatus-request", log.Fields{"img": *img})
if isTestMode(ctx) {
resp := &voltha.ImageDownload{DownloadState: voltha.ImageDownload_DOWNLOAD_SUCCEEDED}
return resp, nil
}
failedresponse := &voltha.ImageDownload{DownloadState: voltha.ImageDownload_DOWNLOAD_UNKNOWN}
if handler.competeForTransaction() {
if txn, err := handler.acquireTransaction(ctx); err != nil {
return failedresponse, err
} else {
defer txn.Close()
}
}
ch := make(chan interface{})
defer close(ch)
go handler.deviceMgr.getImageDownloadStatus(ctx, img, ch)
select {
case res := <-ch:
if res != nil {
if err, ok := res.(error); ok {
return failedresponse, err
}
if downloadResp, ok := res.(*voltha.ImageDownload); ok {
return downloadResp, nil
}
}
log.Warnw("download-image-status", log.Fields{"result": res})
return failedresponse, status.Errorf(codes.Internal, "%s", res)
case <-ctx.Done():
log.Debug("downloadImage-client-timeout")
return failedresponse, ctx.Err()
}
}
func (handler *APIHandler) GetImageDownload(ctx context.Context, img *voltha.ImageDownload) (*voltha.ImageDownload, error) {
log.Debugw("GetImageDownload-request", log.Fields{"img": *img})
if isTestMode(ctx) {
resp := &voltha.ImageDownload{DownloadState: voltha.ImageDownload_DOWNLOAD_SUCCEEDED}
return resp, nil
}
if download, err := handler.deviceMgr.getImageDownload(ctx, img); err != nil {
return &voltha.ImageDownload{DownloadState: voltha.ImageDownload_DOWNLOAD_UNKNOWN}, err
} else {
return download, nil
}
}
func (handler *APIHandler) ListImageDownloads(ctx context.Context, id *voltha.ID) (*voltha.ImageDownloads, error) {
log.Debugw("ListImageDownloads-request", log.Fields{"deviceId": id.Id})
if isTestMode(ctx) {
resp := &voltha.ImageDownloads{Items:[]*voltha.ImageDownload{}}
return resp, nil
}
if downloads, err := handler.deviceMgr.listImageDownloads(ctx, id.Id); err != nil {
failedResp := &voltha.ImageDownloads{
Items:[]*voltha.ImageDownload{
&voltha.ImageDownload{DownloadState: voltha.ImageDownload_DOWNLOAD_UNKNOWN},
},
}
return failedResp, err
} else {
return downloads, nil
}
}
func (handler *APIHandler) UpdateDevicePmConfigs(ctx context.Context, configs *voltha.PmConfigs) (*empty.Empty, error) {
log.Debugw("UpdateDevicePmConfigs-request", log.Fields{"configs": *configs})
if isTestMode(ctx) {
out := new(empty.Empty)
return out, nil
}
return nil, errors.New("UnImplemented")
}
func (handler *APIHandler) CreateAlarmFilter(ctx context.Context, filter *voltha.AlarmFilter) (*voltha.AlarmFilter, error) {
log.Debugw("CreateAlarmFilter-request", log.Fields{"filter": *filter})
if isTestMode(ctx) {
f := &voltha.AlarmFilter{Id: filter.Id}
return f, nil
}
return nil, errors.New("UnImplemented")
}
func (handler *APIHandler) UpdateAlarmFilter(ctx context.Context, filter *voltha.AlarmFilter) (*voltha.AlarmFilter, error) {
log.Debugw("UpdateAlarmFilter-request", log.Fields{"filter": *filter})
if isTestMode(ctx) {
f := &voltha.AlarmFilter{Id: filter.Id}
return f, nil
}
return nil, errors.New("UnImplemented")
}
func (handler *APIHandler) DeleteAlarmFilter(ctx context.Context, id *voltha.ID) (*empty.Empty, error) {
log.Debugw("DeleteAlarmFilter-request", log.Fields{"id": *id})
if isTestMode(ctx) {
out := new(empty.Empty)
return out, nil
}
return nil, errors.New("UnImplemented")
}
func (handler *APIHandler) SelfTest(ctx context.Context, id *voltha.ID) (*voltha.SelfTestResponse, error) {
log.Debugw("SelfTest-request", log.Fields{"id": id})
if isTestMode(ctx) {
resp := &voltha.SelfTestResponse{Result: voltha.SelfTestResponse_SUCCESS}
return resp, nil
}
return nil, errors.New("UnImplemented")
}
func (handler *APIHandler) forwardPacketOut(packet *openflow_13.PacketOut) {
log.Debugw("forwardPacketOut-request", log.Fields{"packet": packet})
agent := handler.logicalDeviceMgr.getLogicalDeviceAgent(packet.Id)
agent.packetOut(packet.PacketOut)
}
func (handler *APIHandler) StreamPacketsOut(
packets voltha.VolthaService_StreamPacketsOutServer,
) error {
log.Debugw("StreamPacketsOut-request", log.Fields{"packets": packets})
for {
packet, err := packets.Recv()
if err == io.EOF {
break
} else if err != nil {
log.Errorw("Failed to receive packet", log.Fields{"error": err})
}
handler.forwardPacketOut(packet)
}
log.Debugw("StreamPacketsOut-request-done", log.Fields{"packets": packets})
return nil
}
func (handler *APIHandler) sendPacketIn(deviceId string, packet *openflow_13.OfpPacketIn) {
packetIn := openflow_13.PacketIn{Id: deviceId, PacketIn: packet}
log.Debugw("sendPacketIn", log.Fields{"packetIn": packetIn})
// Enqueue the packet
if err := handler.packetInQueue.Put(packetIn); err != nil {
log.Errorw("failed-to-enqueue-packet", log.Fields{"error": err})
}
}
func (handler *APIHandler) ReceivePacketsIn(
empty *empty.Empty,
packetsIn voltha.VolthaService_ReceivePacketsInServer,
) error {
log.Debugw("ReceivePacketsIn-request", log.Fields{"packetsIn": packetsIn})
for {
// Dequeue a packet
if packets, err := handler.packetInQueue.Get(1); err == nil {
log.Debugw("dequeued-packet", log.Fields{"packet": packets[0]})
if packet, ok := packets[0].(openflow_13.PacketIn); ok {
log.Debugw("sending-packet-in", log.Fields{"packet": packet})
if err := packetsIn.Send(&packet); err != nil {
log.Errorw("failed-to-send-packet", log.Fields{"error": err})
}
}
}
}
//TODO: FInd an elegant way to get out of the above loop when the Core is stopped
}
func (handler *APIHandler) sendChangeEvent(deviceId string, portStatus *openflow_13.OfpPortStatus) {
// TODO: validate the type of portStatus parameter
//if _, ok := portStatus.(*openflow_13.OfpPortStatus); ok {
//}
event := openflow_13.ChangeEvent{Id: deviceId, Event: &openflow_13.ChangeEvent_PortStatus{PortStatus: portStatus}}
log.Debugw("sendChangeEvent", log.Fields{"event": event})
// TODO: put the packet in the queue
}
func (handler *APIHandler) ReceiveChangeEvents(
empty *empty.Empty,
changeEvents voltha.VolthaService_ReceiveChangeEventsServer,
) error {
log.Debugw("ReceiveChangeEvents-request", log.Fields{"changeEvents": changeEvents})
for {
// TODO: need to retrieve packet from queue
event := &openflow_13.ChangeEvent{}
time.Sleep(time.Duration(5) * time.Second)
err := changeEvents.Send(event)
if err != nil {
log.Errorw("Failed to send change event", log.Fields{"error": err})
}
}
// TODO: put the packet in the queue
}
func (handler *APIHandler) Subscribe(
ctx context.Context,
ofAgent *voltha.OfAgentSubscriber,
) (*voltha.OfAgentSubscriber, error) {
log.Debugw("Subscribe-request", log.Fields{"ofAgent": ofAgent})
return &voltha.OfAgentSubscriber{OfagentId: ofAgent.OfagentId, VolthaId: ofAgent.VolthaId}, nil
}