138 lines
3.9 KiB
Go
138 lines
3.9 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information.
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package contact
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import (
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"context"
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"fmt"
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"net"
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"github.com/zeebo/errs"
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"go.uber.org/zap"
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"google.golang.org/grpc"
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"google.golang.org/grpc/peer"
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"storj.io/storj/pkg/identity"
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"storj.io/storj/pkg/pb"
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"storj.io/storj/pkg/storj"
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)
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// Endpoint implements the contact service Endpoints.
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type Endpoint struct {
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log *zap.Logger
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service *Service
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}
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// NewEndpoint returns a new contact service endpoint.
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func NewEndpoint(log *zap.Logger, service *Service) *Endpoint {
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return &Endpoint{
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log: log,
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service: service,
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}
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}
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// CheckIn is periodically called by storage nodes to keep the satellite informed of its existence,
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// address, and operator information. In return, this satellite keeps the node informed of its
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// reachability.
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// When a node checks-in with the satellite, the satellite pings the node back to confirm they can
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// successfully connect.
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func (endpoint *Endpoint) CheckIn(ctx context.Context, req *pb.CheckInRequest) (_ *pb.CheckInResponse, err error) {
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defer mon.Task()(&ctx)(&err)
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peerID, err := peerIDFromContext(ctx)
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if err != nil {
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return nil, Error.Wrap(err)
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}
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nodeID := peerID.ID
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err = endpoint.service.peerIDs.Set(ctx, nodeID, peerID)
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if err != nil {
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return nil, Error.Wrap(err)
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}
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pingNodeSuccess, pingErrorMessage, err := endpoint.pingBack(ctx, req, nodeID)
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if err != nil {
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return nil, Error.Wrap(err)
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}
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err = endpoint.service.overlay.Put(ctx, nodeID, pb.Node{
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Id: nodeID,
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Address: &pb.NodeAddress{
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Transport: pb.NodeTransport_TCP_TLS_GRPC,
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Address: req.Address,
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},
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})
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if err != nil {
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return nil, Error.Wrap(err)
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}
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// TODO(jg): We are making 2 requests to the database, one to update uptime and
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// the other to update the capacity and operator info. We should combine these into
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// one to reduce db connections. Consider adding batching and using a stored procedure.
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_, err = endpoint.service.overlay.UpdateUptime(ctx, nodeID, pingNodeSuccess)
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if err != nil {
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return nil, Error.Wrap(err)
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}
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nodeInfo := pb.InfoResponse{Operator: req.GetOperator(), Capacity: req.GetCapacity(), Version: &pb.NodeVersion{Version: req.Version}}
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_, err = endpoint.service.overlay.UpdateNodeInfo(ctx, nodeID, &nodeInfo)
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if err != nil {
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return nil, Error.Wrap(err)
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}
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endpoint.log.Debug("checking in", zap.String("node addr", req.Address), zap.Bool("ping node succes", pingNodeSuccess))
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return &pb.CheckInResponse{
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PingNodeSuccess: pingNodeSuccess,
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PingErrorMessage: pingErrorMessage,
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}, nil
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}
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func (endpoint *Endpoint) pingBack(ctx context.Context, req *pb.CheckInRequest, peerID storj.NodeID) (bool, string, error) {
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client, err := newClient(ctx,
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endpoint.service.transport,
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req.Address,
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peerID,
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)
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if err != nil {
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// if this is a network error, then return the error otherwise just report internal error
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_, ok := err.(net.Error)
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if ok {
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return false, "", Error.New("failed to connect to %s: %v", req.Address, err)
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}
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endpoint.log.Info("pingBack internal error", zap.String("error", err.Error()))
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return false, "", Error.New("couldn't connect to client at addr: %s due to internal error.", req.Address)
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}
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defer func() {
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err = errs.Combine(err, client.close())
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}()
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pingNodeSuccess := true
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var pingErrorMessage string
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p := &peer.Peer{}
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_, err = client.pingNode(ctx, &pb.ContactPingRequest{}, grpc.Peer(p))
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if err != nil {
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pingNodeSuccess = false
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pingErrorMessage = "erroring while trying to pingNode due to internal error"
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_, ok := err.(net.Error)
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if ok {
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pingErrorMessage = fmt.Sprintf("network erroring while trying to pingNode: %v\n", err)
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}
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}
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return pingNodeSuccess, pingErrorMessage, err
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}
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func peerIDFromContext(ctx context.Context) (*identity.PeerIdentity, error) {
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p, ok := peer.FromContext(ctx)
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if !ok {
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return nil, Error.New("unable to get grpc peer from context")
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}
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peerIdentity, err := identity.PeerIdentityFromPeer(p)
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if err != nil {
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return nil, err
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}
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return peerIdentity, nil
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}
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