mirror of https://github.com/ethereum/go-ethereum
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
114 lines
4.4 KiB
114 lines
4.4 KiB
// Copyright 2023 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package api
|
|
|
|
import (
|
|
"reflect"
|
|
|
|
"github.com/ethereum/go-ethereum/beacon/light/request"
|
|
"github.com/ethereum/go-ethereum/beacon/light/sync"
|
|
"github.com/ethereum/go-ethereum/beacon/types"
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/log"
|
|
)
|
|
|
|
// ApiServer is a wrapper around BeaconLightApi that implements request.requestServer.
|
|
type ApiServer struct {
|
|
api *BeaconLightApi
|
|
eventCallback func(event request.Event)
|
|
unsubscribe func()
|
|
}
|
|
|
|
// NewApiServer creates a new ApiServer.
|
|
func NewApiServer(api *BeaconLightApi) *ApiServer {
|
|
return &ApiServer{api: api}
|
|
}
|
|
|
|
// Subscribe implements request.requestServer.
|
|
func (s *ApiServer) Subscribe(eventCallback func(event request.Event)) {
|
|
s.eventCallback = eventCallback
|
|
listener := HeadEventListener{
|
|
OnNewHead: func(slot uint64, blockRoot common.Hash) {
|
|
log.Debug("New head received", "slot", slot, "blockRoot", blockRoot)
|
|
eventCallback(request.Event{Type: sync.EvNewHead, Data: types.HeadInfo{Slot: slot, BlockRoot: blockRoot}})
|
|
},
|
|
OnOptimistic: func(update types.OptimisticUpdate) {
|
|
log.Debug("New optimistic update received", "slot", update.Attested.Slot, "blockRoot", update.Attested.Hash(), "signerCount", update.Signature.SignerCount())
|
|
eventCallback(request.Event{Type: sync.EvNewOptimisticUpdate, Data: update})
|
|
},
|
|
OnFinality: func(update types.FinalityUpdate) {
|
|
log.Debug("New finality update received", "slot", update.Attested.Slot, "blockRoot", update.Attested.Hash(), "signerCount", update.Signature.SignerCount())
|
|
eventCallback(request.Event{Type: sync.EvNewFinalityUpdate, Data: update})
|
|
},
|
|
OnError: func(err error) {
|
|
log.Warn("Head event stream error", "err", err)
|
|
},
|
|
}
|
|
s.unsubscribe = s.api.StartHeadListener(listener)
|
|
}
|
|
|
|
// SendRequest implements request.requestServer.
|
|
func (s *ApiServer) SendRequest(id request.ID, req request.Request) {
|
|
go func() {
|
|
var resp request.Response
|
|
var err error
|
|
switch data := req.(type) {
|
|
case sync.ReqUpdates:
|
|
log.Debug("Beacon API: requesting light client update", "reqid", id, "period", data.FirstPeriod, "count", data.Count)
|
|
var r sync.RespUpdates
|
|
r.Updates, r.Committees, err = s.api.GetBestUpdatesAndCommittees(data.FirstPeriod, data.Count)
|
|
resp = r
|
|
case sync.ReqHeader:
|
|
var r sync.RespHeader
|
|
log.Debug("Beacon API: requesting header", "reqid", id, "hash", common.Hash(data))
|
|
r.Header, r.Canonical, r.Finalized, err = s.api.GetHeader(common.Hash(data))
|
|
resp = r
|
|
case sync.ReqCheckpointData:
|
|
log.Debug("Beacon API: requesting checkpoint data", "reqid", id, "hash", common.Hash(data))
|
|
resp, err = s.api.GetCheckpointData(common.Hash(data))
|
|
case sync.ReqBeaconBlock:
|
|
log.Debug("Beacon API: requesting block", "reqid", id, "hash", common.Hash(data))
|
|
resp, err = s.api.GetBeaconBlock(common.Hash(data))
|
|
case sync.ReqFinality:
|
|
log.Debug("Beacon API: requesting finality update")
|
|
resp, err = s.api.GetFinalityUpdate()
|
|
default:
|
|
}
|
|
|
|
if err != nil {
|
|
log.Warn("Beacon API request failed", "type", reflect.TypeOf(req), "reqid", id, "err", err)
|
|
s.eventCallback(request.Event{Type: request.EvFail, Data: request.RequestResponse{ID: id, Request: req}})
|
|
} else {
|
|
log.Debug("Beacon API request answered", "type", reflect.TypeOf(req), "reqid", id)
|
|
s.eventCallback(request.Event{Type: request.EvResponse, Data: request.RequestResponse{ID: id, Request: req, Response: resp}})
|
|
}
|
|
}()
|
|
}
|
|
|
|
// Unsubscribe implements request.requestServer.
|
|
// Note: Unsubscribe should not be called concurrently with Subscribe.
|
|
func (s *ApiServer) Unsubscribe() {
|
|
if s.unsubscribe != nil {
|
|
s.unsubscribe()
|
|
s.unsubscribe = nil
|
|
}
|
|
}
|
|
|
|
// Name implements request.Server
|
|
func (s *ApiServer) Name() string {
|
|
return s.api.url
|
|
}
|
|
|