75 lines
2.0 KiB
Go
75 lines
2.0 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information.
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package node
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import (
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"context"
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"sync/atomic"
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"go.uber.org/zap"
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"storj.io/storj/pkg/dht"
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"storj.io/storj/pkg/pb"
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)
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// Server implements the grpc Node Server
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type Server struct {
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dht dht.DHT
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log *zap.Logger
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connected int32
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}
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// NewServer returns a newly instantiated Node Server
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func NewServer(log *zap.Logger, dht dht.DHT) *Server {
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return &Server{
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dht: dht,
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log: log,
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}
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}
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// Query is a node to node communication query
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func (server *Server) Query(ctx context.Context, req *pb.QueryRequest) (*pb.QueryResponse, error) {
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rt, err := server.dht.GetRoutingTable(ctx)
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if err != nil {
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return &pb.QueryResponse{}, NodeClientErr.New("could not get routing table %server", err)
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}
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if req.GetPingback() {
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_, err = server.dht.Ping(ctx, *req.Sender)
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if err != nil {
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server.log.Debug("connection to node failed", zap.Error(err), zap.String("nodeID", req.Sender.Id.String()))
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err = rt.ConnectionFailed(req.Sender)
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if err != nil {
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server.log.Error("could not respond to connection failed", zap.Error(err))
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}
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} else {
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err = rt.ConnectionSuccess(req.Sender)
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if err != nil {
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server.log.Error("could not respond to connection success", zap.Error(err))
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} else {
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count := atomic.AddInt32(&server.connected, 1)
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if count == 1 {
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server.log.Sugar().Debugf("Successfully connected with %s", req.Sender.Address.Address)
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} else if count%100 == 0 {
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server.log.Sugar().Debugf("Successfully connected with %s %dx times", req.Sender.Address.Address, count)
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}
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}
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}
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}
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nodes, err := rt.FindNear(req.Target.Id, int(req.Limit))
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if err != nil {
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return &pb.QueryResponse{}, NodeClientErr.New("could not find near %server", err)
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}
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return &pb.QueryResponse{Sender: req.Sender, Response: nodes}, nil
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}
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// Ping provides an easy way to verify a node is online and accepting requests
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func (server *Server) Ping(ctx context.Context, req *pb.PingRequest) (*pb.PingResponse, error) {
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//TODO
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return &pb.PingResponse{}, nil
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}
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