mirror of
https://github.com/ethereum/go-ethereum.git
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95 lines
3.3 KiB
Go
Executable file
95 lines
3.3 KiB
Go
Executable file
// Copyright 2023 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package api
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import (
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"sync/atomic"
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"github.com/ethereum/go-ethereum/beacon/light/request"
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"github.com/ethereum/go-ethereum/beacon/light/sync"
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"github.com/ethereum/go-ethereum/beacon/types"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/log"
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)
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type ApiServer struct {
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api *BeaconLightApi
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eventCallback func(event request.Event)
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unsubscribe func()
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lastId uint64
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}
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func NewApiServer(api *BeaconLightApi) *ApiServer {
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return &ApiServer{api: api}
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}
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func (s *ApiServer) Subscribe(eventCallback func(event request.Event)) {
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s.eventCallback = eventCallback
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s.unsubscribe = s.api.StartHeadListener(func(slot uint64, blockRoot common.Hash) {
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log.Debug("New head received", "slot", slot, "blockRoot", blockRoot)
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eventCallback(request.Event{Type: sync.EvNewHead, Data: types.HeadInfo{Slot: slot, BlockRoot: blockRoot}})
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}, func(head types.SignedHeader) {
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log.Debug("New signed head received", "slot", head.Header.Slot, "blockRoot", head.Header.Hash(), "signerCount", head.Signature.SignerCount())
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eventCallback(request.Event{Type: sync.EvNewSignedHead, Data: head})
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}, func(err error) {
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log.Warn("Head event stream error", "err", err)
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})
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}
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func (s *ApiServer) SendRequest(req request.Request) request.ID {
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id := request.ID(atomic.AddUint64(&s.lastId, 1))
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go func() {
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var resp request.Response
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switch data := req.(type) {
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case sync.ReqUpdates:
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if updates, committees, err := s.api.GetBestUpdatesAndCommittees(data.FirstPeriod, data.Count); err == nil {
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resp = sync.RespUpdates{Updates: updates, Committees: committees}
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}
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/*case sync.ReqOptimisticHead:
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if signedHead, err := s.api.GetOptimisticHeadUpdate(); err == nil {
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resp = signedHead
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}*/ //TODO ???
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case sync.ReqHeader:
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if header, err := s.api.GetHeader(common.Hash(data)); err == nil {
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resp = header
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}
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case sync.ReqCheckpointData:
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if bootstrap, err := s.api.GetCheckpointData(common.Hash(data)); err == nil {
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resp = bootstrap
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}
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case sync.ReqBeaconBlock:
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if block, err := s.api.GetBeaconBlock(common.Hash(data)); err == nil {
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resp = block
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}
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default:
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}
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if resp != nil {
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s.eventCallback(request.Event{Type: request.EvResponse, Data: request.RequestResponse{ID: id, Request: req, Response: resp}})
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} else {
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s.eventCallback(request.Event{Type: request.EvFail, Data: request.RequestResponse{ID: id, Request: req}})
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}
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}()
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return id
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}
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// Note: UnsubscribeHeads should not be called concurrently with SubscribeHeads
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func (s *ApiServer) Unsubscribe() {
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if s.unsubscribe != nil {
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s.unsubscribe()
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s.unsubscribe = nil
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}
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}
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