blob: d88d68bea5ccf32ac6231c6ac26a58426d9574ba [file] [log] [blame]
/*
Copyright 2020 the original author or authors.
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 ofagent
import (
"context"
"time"
"github.com/golang/protobuf/ptypes/empty"
"github.com/opencord/ofagent-go/internal/pkg/openflow"
"github.com/opencord/voltha-lib-go/v7/pkg/log"
)
func (ofa *OFAgent) synchronizeDeviceList(ctx context.Context) {
// Refresh once to get everything started
ofa.refreshDeviceList(ctx)
tick := time.NewTicker(ofa.DeviceListRefreshInterval)
loop:
for {
select {
case <-ctx.Done():
break loop
case <-tick.C:
ofa.refreshDeviceList(ctx)
}
}
tick.Stop()
}
func (ofa *OFAgent) refreshDeviceList(ctx context.Context) {
span, ctx := log.CreateChildSpan(ctx, "refresh-device-list")
defer span.Finish()
// If we exit, assume disconnected
if ofa.volthaClient == nil {
logger.Error(ctx, "no-voltha-connection")
ofa.events <- ofaEventVolthaDisconnected
return
}
vc := ofa.volthaClient.Get()
if vc == nil {
logger.Error(ctx, "No client found to query device list from voltha")
ofa.events <- ofaEventVolthaDisconnected
return
}
deviceList, err := vc.ListLogicalDevices(log.WithSpanFromContext(context.Background(), ctx), &empty.Empty{})
if err != nil {
logger.Errorw(ctx, "ofagent failed to query device list from voltha",
log.Fields{"error": err})
ofa.events <- ofaEventVolthaDisconnected
return
}
devices := deviceList.GetItems()
var toAdd []string
var toDel []string
var deviceIDMap = make(map[string]string)
for i := 0; i < len(devices); i++ {
deviceID := devices[i].GetId()
deviceIDMap[deviceID] = deviceID
if ofa.clientMap[deviceID] == nil {
toAdd = append(toAdd, deviceID)
}
}
for key := range ofa.clientMap {
if deviceIDMap[key] == "" {
toDel = append(toDel, key)
}
}
logger.Debugw(ctx, "GrpcClient refreshDeviceList", log.Fields{"ToAdd": toAdd, "ToDel": toDel})
for i := 0; i < len(toAdd); i++ {
ofa.addOFClient(ctx, toAdd[i]) // client is started in addOFClient
}
for i := 0; i < len(toDel); i++ {
ofa.clientMap[toDel[i]].Stop()
ofa.mapLock.Lock()
delete(ofa.clientMap, toDel[i])
ofa.mapLock.Unlock()
}
}
func (ofa *OFAgent) addOFClient(ctx context.Context, deviceID string) *openflow.OFClient {
logger.Debugw(ctx, "GrpcClient addClient called ", log.Fields{"device-id": deviceID})
ofa.mapLock.Lock()
ofc := ofa.clientMap[deviceID]
if ofc == nil {
ofc = openflow.NewOFClient(ctx, &openflow.OFClient{
DeviceID: deviceID,
OFControllerEndPoints: ofa.OFControllerEndPoints,
VolthaClient: ofa.volthaClient,
PacketOutChannel: ofa.packetOutChannel,
ConnectionMaxRetries: ofa.ConnectionMaxRetries,
ConnectionRetryDelay: ofa.ConnectionRetryDelay,
})
ofc.Run(context.Background())
ofa.clientMap[deviceID] = ofc
}
ofa.mapLock.Unlock()
logger.Debugw(ctx, "Finished with addClient", log.Fields{"device-id": deviceID})
return ofc
}
func (ofa *OFAgent) getOFClient(ctx context.Context, deviceID string) *openflow.OFClient {
ofa.mapLock.Lock()
ofc := ofa.clientMap[deviceID]
ofa.mapLock.Unlock()
if ofc == nil {
ofc = ofa.addOFClient(ctx, deviceID)
}
return ofc
}
//clearAllOFClient clears all OF connections for all clients
func (ofa *OFAgent) clearAllOFClient() {
logger.Debug(context.Background(), "stopping-all-of-connections...")
ofa.mapLock.Lock()
for deviceID := range ofa.clientMap {
ofa.clientMap[deviceID].Stop()
delete(ofa.clientMap, deviceID)
}
ofa.mapLock.Unlock()
}