/
system_service.go
146 lines (121 loc) · 3.22 KB
/
system_service.go
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package server
import (
"context"
"time"
"github.com/0xPolygon/polygon-sdk/network"
"github.com/0xPolygon/polygon-sdk/server/proto"
"github.com/libp2p/go-libp2p-core/peer"
empty "google.golang.org/protobuf/types/known/emptypb"
)
type systemService struct {
proto.UnimplementedSystemServer
s *Server
}
// GetStatus returns the current system status, in the form of:
//
// Network: <chainID>
//
// Current: { Number: <blockNumber>; Hash: <headerHash> }
//
// P2PAddr: <libp2pAddress>
func (s *systemService) GetStatus(ctx context.Context, req *empty.Empty) (*proto.ServerStatus, error) {
header := s.s.blockchain.Header()
status := &proto.ServerStatus{
Network: int64(s.s.chain.Params.ChainID),
Current: &proto.ServerStatus_Block{
Number: int64(header.Number),
Hash: header.Hash.String(),
},
P2PAddr: network.AddrInfoToString(s.s.network.AddrInfo()),
}
return status, nil
}
// Subscribe implements the blockchain event subscription service
func (s *systemService) Subscribe(req *empty.Empty, stream proto.System_SubscribeServer) error {
sub := s.s.blockchain.SubscribeEvents()
for {
evnt := sub.GetEvent()
if evnt == nil {
break
}
pEvent := &proto.BlockchainEvent{
Added: []*proto.BlockchainEvent_Header{},
Removed: []*proto.BlockchainEvent_Header{},
}
for _, h := range evnt.NewChain {
pEvent.Added = append(
pEvent.Added,
&proto.BlockchainEvent_Header{Hash: h.Hash.String(), Number: int64(h.Number)},
)
}
for _, h := range evnt.OldChain {
pEvent.Removed = append(
pEvent.Removed,
&proto.BlockchainEvent_Header{Hash: h.Hash.String(), Number: int64(h.Number)},
)
}
err := stream.Send(pEvent)
if err != nil {
break
}
}
sub.Close()
return nil
}
// PeersAdd implements the 'peers add' operator service
func (s *systemService) PeersAdd(ctx context.Context, req *proto.PeersAddRequest) (*empty.Empty, error) {
dur := time.Duration(0)
if req.Blocked {
dur = network.DefaultJoinTimeout
}
err := s.s.Join(req.Id, dur)
return &empty.Empty{}, err
}
// PeersStatus implements the 'peers status' operator service
func (s *systemService) PeersStatus(ctx context.Context, req *proto.PeersStatusRequest) (*proto.Peer, error) {
peerID, err := peer.Decode(req.Id)
if err != nil {
return nil, err
}
peer, err := s.getPeer(peerID)
if err != nil {
return nil, err
}
return peer, nil
}
// getPeer returns a specific proto.Peer using the peer ID
func (s *systemService) getPeer(id peer.ID) (*proto.Peer, error) {
protocols, err := s.s.network.GetProtocols(id)
if err != nil {
return nil, err
}
info := s.s.network.GetPeerInfo(id)
addrs := []string{}
for _, addr := range info.Addrs {
addrs = append(addrs, addr.String())
}
peer := &proto.Peer{
Id: id.String(),
Protocols: protocols,
Addrs: addrs,
}
return peer, nil
}
// PeersList implements the 'peers list' operator service
func (s *systemService) PeersList(
ctx context.Context,
req *empty.Empty,
) (*proto.PeersListResponse, error) {
resp := &proto.PeersListResponse{
Peers: []*proto.Peer{},
}
peers := s.s.network.Peers()
for _, p := range peers {
peer, err := s.getPeer(p.Info.ID)
if err != nil {
return nil, err
}
resp.Peers = append(resp.Peers, peer)
}
return resp, nil
}