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server.go
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server.go
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// -*- coding: utf-8 -*-
// Copyright (C) 2018 Nippon Telegraph and Telephone Corporation.
//
// 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 gonslib
import (
"bytes"
fibcapi "fabricflow/fibc/api"
fibclib "fabricflow/fibc/lib"
fibcnet "fabricflow/fibc/net"
"github.com/beluganos/go-opennsl/opennsl"
log "github.com/sirupsen/logrus"
)
//
// Server is main service of gonsld.
//
type Server struct {
client *fibcnet.Client
dpCfg *DpConfig
logCfg *LogConfig
fields *FieldGroups
idmaps *IDMaps
vlanPorts *VlanPortTable
l2addrCh chan []*L2addrmonEntry
}
//
// NewServer cerates new instance of Server.
//
func NewServer(dpCfg *DpConfig, logCfg *LogConfig) *Server {
return &Server{
client: fibcnet.NewClient(dpCfg.GetHost()),
dpCfg: dpCfg,
logCfg: logCfg,
fields: NewFieldGroups(dpCfg.Unit),
idmaps: NewIDMaps(),
vlanPorts: NewVlanPortTableFromConfig(&dpCfg.BlockBcast),
l2addrCh: make(chan []*L2addrmonEntry),
}
}
func (s *Server) Unit() int {
return s.dpCfg.Unit
}
func (s *Server) DpID() uint64 {
return s.dpCfg.DpID
}
func (s *Server) Fields() *FieldGroups {
return s.fields
}
func (s *Server) LogConfig() *LogConfig {
return s.logCfg
}
func (s *Server) VlanPorts() *VlanPortTable {
return s.vlanPorts
}
//
// RecvMain reveives and dispatch messages from fibcd.
//
func (s *Server) RecvMain() {
log.Debugf("Server: RecvMain started.")
s.client.Start(func(client *fibcnet.Client) {
for {
hdr, data, err := s.client.Read()
if err != nil {
log.Errorf("Server: Client EXIT. Read error. %s", err)
return
}
log.Debugf("Server: Recv %v", hdr)
if err := fibclib.Dispatch(hdr, data, s); err != nil {
log.Errorf("Dispatch error. %s", err)
}
}
})
}
//
// Serve is main loop of Service.
//
func (s *Server) Serve(done <-chan struct{}) {
log.Debugf("Server: Serve started.")
var rxBuf bytes.Buffer
defer s.client.Stop()
rxCh := s.RxStart(done)
linkCh := s.LinkmonStart(done)
s.L2AddrMonStart(done)
for {
select {
case connected := <-s.client.Conn():
if connected {
log.Infof("Server: connected.")
hello := fibcapi.NewFFHello(s.DpID())
if err := s.client.Write(hello, 0); err != nil {
log.Errorf("Server: Write error. %s", err)
}
} else {
log.Infof("Server: connection closed.")
}
case pkt := <-rxCh:
s.dumpRxPkt(pkt)
rxBuf.Reset()
if _, err := pkt.WriteTo(&rxBuf); err != nil {
log.Errorf("Server: pkt.WriteTo error. %s", err)
} else {
pktIn := fibcapi.NewFFPacketIn(s.DpID(), uint32(pkt.SrcPort()), rxBuf.Bytes())
if err := s.client.Write(pktIn, 0); err != nil {
log.Errorf("Server: client.Write error. %s", err)
}
}
case linkInfo := <-linkCh:
log.Debugf("Server: LinkInfo: %v", linkInfo)
port := fibcapi.NewFFPort(linkInfo.PortNo())
port.State = linkInfo.PortState()
portStatus := fibcapi.NewFFPortStatus(s.DpID(), port, fibcapi.FFPortStatus_MODIFY)
if err := s.client.Write(portStatus, 0); err != nil {
log.Errorf("Server: client.Write error. %s", err)
}
case entries := <-s.l2addrCh:
log.Debugf("Server: L2AddrEntry %d", len(entries))
reason := func(oper opennsl.L2CallbackOper) fibcapi.L2Addr_Reason {
switch oper {
case opennsl.L2_CALLBACK_ADD:
return fibcapi.L2Addr_ADD
case opennsl.L2_CALLBACK_DELETE:
return fibcapi.L2Addr_DELETE
default:
return fibcapi.L2Addr_NOP
}
}
addrs := make([]*fibcapi.L2Addr, len(entries))
for index, entry := range entries {
addrs[index] = fibcapi.NewL2AddrDP(
entry.L2Addr.MAC(),
uint16(entry.L2Addr.VID()),
uint32(entry.L2Addr.Port()),
reason(entry.Oper),
)
}
status := fibcapi.NewFFL2AddrStatus(s.DpID(), addrs)
if err := s.client.Write(status, 0); err != nil {
log.Errorf("Server: client.Write error. %s", err)
}
case <-done:
log.Infof("Server: Exit.")
return
}
}
}
//
// Start starts submodules.
//
func (s *Server) Start(done <-chan struct{}) error {
if block := s.dpCfg.BlockBcast.Block(); !block {
if err := PortDefaultVlanConfig(s.Unit()); err != nil {
log.Errorf("Server: PortDefaultVlanConfig error. %s", err)
return err
}
log.Infof("Server: PortDefaultVlanConfig ok.")
}
go s.RecvMain()
go s.Serve(done)
log.Infof("Server: started.")
return nil
}