40cdcf8c47
* les, light: implement ODR transaction lookup by hash * les: delete useless file * internal/ethapi: always use backend to find transaction * les, eth, internal/ethapi: renamed GetCanonicalTransaction to GetTransaction * light: add canonical header verification to GetTransaction
132 lines
3.7 KiB
Go
132 lines
3.7 KiB
Go
// Copyright 2016 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 les
|
|
|
|
import (
|
|
"context"
|
|
|
|
"github.com/ethereum/go-ethereum/core"
|
|
"github.com/ethereum/go-ethereum/ethdb"
|
|
"github.com/ethereum/go-ethereum/light"
|
|
"github.com/ethereum/go-ethereum/log"
|
|
)
|
|
|
|
// LesOdr implements light.OdrBackend
|
|
type LesOdr struct {
|
|
db ethdb.Database
|
|
indexerConfig *light.IndexerConfig
|
|
chtIndexer, bloomTrieIndexer, bloomIndexer *core.ChainIndexer
|
|
retriever *retrieveManager
|
|
stop chan struct{}
|
|
}
|
|
|
|
func NewLesOdr(db ethdb.Database, config *light.IndexerConfig, retriever *retrieveManager) *LesOdr {
|
|
return &LesOdr{
|
|
db: db,
|
|
indexerConfig: config,
|
|
retriever: retriever,
|
|
stop: make(chan struct{}),
|
|
}
|
|
}
|
|
|
|
// Stop cancels all pending retrievals
|
|
func (odr *LesOdr) Stop() {
|
|
close(odr.stop)
|
|
}
|
|
|
|
// Database returns the backing database
|
|
func (odr *LesOdr) Database() ethdb.Database {
|
|
return odr.db
|
|
}
|
|
|
|
// SetIndexers adds the necessary chain indexers to the ODR backend
|
|
func (odr *LesOdr) SetIndexers(chtIndexer, bloomTrieIndexer, bloomIndexer *core.ChainIndexer) {
|
|
odr.chtIndexer = chtIndexer
|
|
odr.bloomTrieIndexer = bloomTrieIndexer
|
|
odr.bloomIndexer = bloomIndexer
|
|
}
|
|
|
|
// ChtIndexer returns the CHT chain indexer
|
|
func (odr *LesOdr) ChtIndexer() *core.ChainIndexer {
|
|
return odr.chtIndexer
|
|
}
|
|
|
|
// BloomTrieIndexer returns the bloom trie chain indexer
|
|
func (odr *LesOdr) BloomTrieIndexer() *core.ChainIndexer {
|
|
return odr.bloomTrieIndexer
|
|
}
|
|
|
|
// BloomIndexer returns the bloombits chain indexer
|
|
func (odr *LesOdr) BloomIndexer() *core.ChainIndexer {
|
|
return odr.bloomIndexer
|
|
}
|
|
|
|
// IndexerConfig returns the indexer config.
|
|
func (odr *LesOdr) IndexerConfig() *light.IndexerConfig {
|
|
return odr.indexerConfig
|
|
}
|
|
|
|
const (
|
|
MsgBlockBodies = iota
|
|
MsgCode
|
|
MsgReceipts
|
|
MsgProofsV2
|
|
MsgHelperTrieProofs
|
|
MsgTxStatus
|
|
)
|
|
|
|
// Msg encodes a LES message that delivers reply data for a request
|
|
type Msg struct {
|
|
MsgType int
|
|
ReqID uint64
|
|
Obj interface{}
|
|
}
|
|
|
|
// Retrieve tries to fetch an object from the LES network.
|
|
// If the network retrieval was successful, it stores the object in local db.
|
|
func (odr *LesOdr) Retrieve(ctx context.Context, req light.OdrRequest) (err error) {
|
|
lreq := LesRequest(req)
|
|
|
|
reqID := genReqID()
|
|
rq := &distReq{
|
|
getCost: func(dp distPeer) uint64 {
|
|
return lreq.GetCost(dp.(*peer))
|
|
},
|
|
canSend: func(dp distPeer) bool {
|
|
p := dp.(*peer)
|
|
if !p.isOnlyAnnounce {
|
|
return lreq.CanSend(p)
|
|
}
|
|
return false
|
|
},
|
|
request: func(dp distPeer) func() {
|
|
p := dp.(*peer)
|
|
cost := lreq.GetCost(p)
|
|
p.fcServer.QueuedRequest(reqID, cost)
|
|
return func() { lreq.Request(reqID, p) }
|
|
},
|
|
}
|
|
|
|
if err = odr.retriever.retrieve(ctx, reqID, rq, func(p distPeer, msg *Msg) error { return lreq.Validate(odr.db, msg) }, odr.stop); err == nil {
|
|
// retrieved from network, store in db
|
|
req.StoreResult(odr.db)
|
|
} else {
|
|
log.Debug("Failed to retrieve data from network", "err", err)
|
|
}
|
|
return
|
|
}
|