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remotenode.go
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remotenode.go
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package node
import (
"encoding/json"
"errors"
"sync"
"time"
"github.com/golang/protobuf/proto"
"github.com/nknorg/nkn/v2/pb"
"github.com/nknorg/nkn/v2/util/log"
nnetnode "github.com/nknorg/nnet/node"
)
type RemoteNode struct {
*Node
localNode ILocalNode
NnetNode *nnetnode.RemoteNode
sharedKey *[SharedKeySize]byte
sync.RWMutex
height uint32
lastUpdateTime time.Time
}
func (remoteNode *RemoteNode) MarshalJSON() ([]byte, error) {
var out map[string]interface{}
buf, err := json.Marshal(remoteNode.Node)
if err != nil {
return nil, err
}
err = json.Unmarshal(buf, &out)
if err != nil {
return nil, err
}
out["height"] = remoteNode.GetHeight()
out["isOutbound"] = remoteNode.NnetNode.IsOutbound
out["roundTripTime"] = remoteNode.NnetNode.GetRoundTripTime() / time.Millisecond
out["connTime"] = time.Since(remoteNode.Node.StartTime) / time.Second
return json.Marshal(out)
}
func NewRemoteNode(localNode ILocalNode, nnetNode *nnetnode.RemoteNode) (*RemoteNode, error) {
nodeData := &pb.NodeData{}
err := proto.Unmarshal(nnetNode.Node.Data, nodeData)
if err != nil {
return nil, err
}
node, err := NewNode(nnetNode.Node.Node, nodeData)
if err != nil {
return nil, err
}
if len(node.PublicKey) == 0 {
return nil, errors.New("nil public key")
}
sharedKey, err := localNode.ComputeSharedKey(node.PublicKey)
if err != nil {
return nil, err
}
remoteNode := &RemoteNode{
Node: node,
localNode: localNode,
NnetNode: nnetNode,
sharedKey: sharedKey,
}
return remoteNode, nil
}
func (remoteNode *RemoteNode) GetHeight() uint32 {
remoteNode.RLock()
defer remoteNode.RUnlock()
return remoteNode.height
}
func (remoteNode *RemoteNode) SetHeight(height uint32) {
remoteNode.Lock()
defer remoteNode.Unlock()
remoteNode.height = height
}
func (remoteNode *RemoteNode) GetLastUpdateTime() time.Time {
remoteNode.RLock()
defer remoteNode.RUnlock()
return remoteNode.lastUpdateTime
}
func (remoteNode *RemoteNode) SetLastUpdateTime(lastUpdateTime time.Time) {
remoteNode.Lock()
defer remoteNode.Unlock()
remoteNode.lastUpdateTime = lastUpdateTime
}
func (remoteNode *RemoteNode) CloseConn() {
remoteNode.NnetNode.Stop(nil)
}
func (remoteNode *RemoteNode) String() string {
return remoteNode.NnetNode.String()
}
func (remoteNode *RemoteNode) IsStopped() bool {
return remoteNode.NnetNode.IsStopped()
}
func (remoteNode *RemoteNode) SendBytesAsync(buf []byte) error {
err := remoteNode.localNode.GetNnet().SendBytesDirectAsync(buf, remoteNode.NnetNode)
if err != nil {
log.Debugf("Error sending async messge to node %v, removing node.", err.Error())
remoteNode.CloseConn()
remoteNode.localNode.RemoveNeighborNode(remoteNode.GetID())
}
return err
}
func (remoteNode *RemoteNode) SendBytesSync(buf []byte) ([]byte, error) {
return remoteNode.SendBytesSyncWithTimeout(buf, 0)
}
func (remoteNode *RemoteNode) SendBytesSyncWithTimeout(buf []byte, replyTimeout time.Duration) ([]byte, error) {
reply, _, err := remoteNode.localNode.GetNnet().SendBytesDirectSyncWithTimeout(buf, remoteNode.NnetNode, replyTimeout)
if err != nil {
log.Debugf("Error sending sync message to node: %v", err.Error())
}
return reply, err
}
func (remoteNode *RemoteNode) SendBytesReply(replyToID, buf []byte) error {
err := remoteNode.localNode.GetNnet().SendBytesDirectReply(replyToID, buf, remoteNode.NnetNode)
if err != nil {
log.Debugf("Error sending async messge to node: %v, removing node.", err.Error())
remoteNode.CloseConn()
remoteNode.localNode.RemoveNeighborNode(remoteNode.GetID())
}
return err
}
func (remoteNode *RemoteNode) EncryptMessage(message []byte) []byte {
return EncryptMessage(message, remoteNode.sharedKey)
}
func (remoteNode *RemoteNode) DecryptMessage(message []byte) ([]byte, bool, error) {
return DecryptMessage(message, remoteNode.sharedKey)
}