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package config
import (
"github.com/BurntSushi/toml"
log "github.com/Sirupsen/logrus"
"reflect"
)
type BgpConfigSet struct {
Bgp Bgp
Policy RoutingPolicy
}
func ReadConfigfileServe(path string, configCh chan BgpConfigSet, reloadCh chan bool) {
cnt := 0
for {
<-reloadCh
b := Bgp{}
p := RoutingPolicy{}
md, err := toml.DecodeFile(path, &b)
if err == nil {
err = SetDefaultConfigValues(md, &b)
if err == nil {
_, err = toml.DecodeFile(path, &p)
}
}
if err != nil {
if cnt == 0 {
log.Fatal("can't read config file ", path, ", ", err)
} else {
log.Warning("can't read config file ", path, ", ", err)
continue
}
}
if cnt == 0 {
log.Info("finished reading the config file")
}
cnt++
bgpConfig := BgpConfigSet{Bgp: b, Policy: p}
configCh <- bgpConfig
}
}
func inSlice(n Neighbor, b []Neighbor) int {
for i, nb := range b {
if nb.NeighborConfig.NeighborAddress.String() == n.NeighborConfig.NeighborAddress.String() {
return i
}
}
return -1
}
func UpdateConfig(curC *Bgp, newC *Bgp) (*Bgp, []Neighbor, []Neighbor, []Neighbor) {
bgpConfig := Bgp{}
if curC == nil {
bgpConfig.Global = newC.Global
curC = &bgpConfig
} else {
// can't update the global config
bgpConfig.Global = curC.Global
}
added := []Neighbor{}
deleted := []Neighbor{}
updated := []Neighbor{}
for _, n := range newC.Neighbors.NeighborList {
if idx := inSlice(n, curC.Neighbors.NeighborList); idx < 0 {
added = append(added, n)
} else {
if !reflect.DeepEqual(n.ApplyPolicy, curC.Neighbors.NeighborList[idx].ApplyPolicy) {
updated = append(updated, n)
}
}
}
for _, n := range curC.Neighbors.NeighborList {
if inSlice(n, newC.Neighbors.NeighborList) < 0 {
deleted = append(deleted, n)
}
}
bgpConfig.Neighbors.NeighborList = newC.Neighbors.NeighborList
return &bgpConfig, added, deleted, updated
}
func CheckPolicyDifference(currentPolicy *RoutingPolicy, newPolicy *RoutingPolicy) bool {
log.Debug("current policy : ", currentPolicy)
log.Debug("newPolicy policy : ", newPolicy)
var result bool = false
if currentPolicy == nil && newPolicy == nil {
result = false
} else {
if currentPolicy != nil && newPolicy != nil {
// TODO: reconsider the way of policy object comparison
result = !reflect.DeepEqual(*currentPolicy, *newPolicy)
} else {
result = true
}
}
return result
}
|
