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neighbors.go
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/
neighbors.go
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package webapi
import (
"fmt"
"net/http"
"strings"
"github.com/gin-gonic/gin"
"github.com/mitchellh/mapstructure"
"github.com/gohornet/hornet/pkg/config"
"github.com/gohornet/hornet/plugins/peering"
)
func init() {
addEndpoint("addNeighbors", addNeighbors, implementedAPIcalls)
addEndpoint("removeNeighbors", removeNeighbors, implementedAPIcalls)
addEndpoint("getNeighbors", getNeighbors, implementedAPIcalls)
}
func addNeighbors(i interface{}, c *gin.Context, _ <-chan struct{}) {
// Check if HORNET style addNeighbors call was made
queryHornet := &AddNeighborsHornet{}
if err := mapstructure.Decode(i, queryHornet); err == nil {
if len(queryHornet.Neighbors) != 0 {
addNeighborsWithAlias(queryHornet, c)
return
}
}
e := ErrorReturn{}
query := &AddNeighbors{}
addedPeers := 0
preferIPv6 := config.NodeConfig.GetBool(config.CfgNetPreferIPv6)
if err := mapstructure.Decode(i, query); err != nil {
e.Error = fmt.Sprintf("%v: %v", ErrInternalError, err)
c.JSON(http.StatusInternalServerError, e)
return
}
added := false
var configPeers []config.PeerConfig
if err := config.PeeringConfig.UnmarshalKey(config.CfgPeers, &configPeers); err != nil {
log.Error(err)
}
for _, uri := range query.Uris {
if strings.Contains(uri, "tcp://") {
uri = uri[6:]
} else if strings.Contains(uri, "://") {
continue
}
contains := false
for _, cn := range configPeers {
if cn.ID == uri {
contains = true
break
}
}
if !contains {
configPeers = append(configPeers, config.PeerConfig{
ID: uri,
Alias: uri,
PreferIPv6: preferIPv6,
})
added = true
}
if err := peering.Manager().Add(uri, preferIPv6, uri); err != nil {
log.Warnf("can't add peer %s, Error: %s", uri, err)
continue
}
addedPeers++
}
if added {
config.DenyPeeringConfigHotReload()
config.PeeringConfig.Set(config.CfgPeers, configPeers)
config.PeeringConfig.WriteConfig()
config.AllowPeeringConfigHotReload()
}
c.JSON(http.StatusOK, AddNeighborsResponse{AddedNeighbors: addedPeers})
}
func addNeighborsWithAlias(s *AddNeighborsHornet, c *gin.Context) {
addedPeers := 0
added := false
var configPeers []config.PeerConfig
if err := config.PeeringConfig.UnmarshalKey(config.CfgPeers, &configPeers); err != nil {
log.Error(err)
}
for _, peer := range s.Neighbors {
if strings.Contains(peer.Identity, "tcp://") {
peer.Identity = peer.Identity[6:]
} else if strings.Contains(peer.Identity, "://") {
continue
}
contains := false
for _, cn := range configPeers {
if cn.ID == peer.Identity {
contains = true
break
}
}
if !contains {
configPeers = append(configPeers, config.PeerConfig{
ID: peer.Identity,
Alias: peer.Alias,
PreferIPv6: peer.PreferIPv6,
})
added = true
}
if err := peering.Manager().Add(peer.Identity, peer.PreferIPv6, peer.Alias); err != nil {
log.Warnf("Can't add peer %s, Error: %s", peer.Identity, err)
continue
}
addedPeers++
}
if added {
config.DenyPeeringConfigHotReload()
config.PeeringConfig.Set(config.CfgPeers, configPeers)
config.PeeringConfig.WriteConfig()
config.AllowPeeringConfigHotReload()
}
c.JSON(http.StatusOK, AddNeighborsResponse{AddedNeighbors: addedPeers})
}
func removeNeighbors(i interface{}, c *gin.Context, _ <-chan struct{}) {
e := ErrorReturn{}
query := &RemoveNeighbors{}
removedNeighbors := 0
if err := mapstructure.Decode(i, query); err != nil {
e.Error = fmt.Sprintf("%v: %v", ErrInternalError, err)
c.JSON(http.StatusInternalServerError, e)
return
}
removed := false
var configNeighbors []config.PeerConfig
if err := config.PeeringConfig.UnmarshalKey(config.CfgPeers, &configNeighbors); err != nil {
log.Error(err)
}
peers := peering.Manager().PeerInfos()
for _, uri := range query.Uris {
if strings.Contains(uri, "tcp://") {
uri = uri[6:]
}
for _, p := range peers {
for i, cn := range configNeighbors {
if strings.EqualFold(cn.ID, uri) {
removed = true
// Delete item
configNeighbors[i] = configNeighbors[len(configNeighbors)-1]
configNeighbors = configNeighbors[:len(configNeighbors)-1]
break
}
}
// Remove connected neighbor
if p.Peer != nil {
if strings.EqualFold(p.Peer.ID, uri) || strings.EqualFold(p.DomainWithPort, uri) {
err := peering.Manager().Remove(uri)
if err != nil {
e.Error = fmt.Sprintf("%v: %v", ErrInternalError, err)
c.JSON(http.StatusInternalServerError, e)
return
}
removedNeighbors++
}
} else {
// Remove unconnected neighbor
if strings.EqualFold(p.Address, uri) {
err := peering.Manager().Remove(uri)
if err != nil {
e.Error = fmt.Sprintf("%v: %v", ErrInternalError, err)
c.JSON(http.StatusInternalServerError, e)
return
}
removedNeighbors++
}
}
}
}
if removed {
config.DenyPeeringConfigHotReload()
config.PeeringConfig.Set(config.CfgPeers, configNeighbors)
config.PeeringConfig.WriteConfig()
config.AllowPeeringConfigHotReload()
}
c.JSON(http.StatusOK, RemoveNeighborsReturn{RemovedNeighbors: uint(removedNeighbors)})
}
func getNeighbors(i interface{}, c *gin.Context, _ <-chan struct{}) {
c.JSON(http.StatusOK, GetNeighborsReturn{Neighbors: peering.Manager().PeerInfos()})
}