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les, les/lespay/client: add service value statistics and API (#20837)

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This PR adds service value measurement statistics to the light client. It
also adds a private API that makes these statistics accessible. A follow-up
PR will add the new server pool which uses these statistics to select
servers with good performance.

This document describes the function of the new components:
https://gist.github.com/zsfelfoldi/3c7ace895234b7b345ab4f71dab102d4

Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
This commit is contained in:
Felföldi Zsolt
2020-04-09 11:55:32 +02:00
committed by GitHub
parent 15540ae992
commit 0851646e48
17 changed files with 2142 additions and 38 deletions
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50
les/client.go
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@ -19,6 +19,7 @@ package les
import (
"fmt"
"time"
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
@ -37,6 +38,7 @@ import (
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/internal/ethapi"
"github.com/ethereum/go-ethereum/les/checkpointoracle"
lpc "github.com/ethereum/go-ethereum/les/lespay/client"
"github.com/ethereum/go-ethereum/light"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/node"
@ -49,15 +51,16 @@ import (
type LightEthereum struct {
lesCommons
peers *serverPeerSet
reqDist *requestDistributor
retriever *retrieveManager
odr *LesOdr
relay *lesTxRelay
handler *clientHandler
txPool *light.TxPool
blockchain *light.LightChain
serverPool *serverPool
peers *serverPeerSet
reqDist *requestDistributor
retriever *retrieveManager
odr *LesOdr
relay *lesTxRelay
handler *clientHandler
txPool *light.TxPool
blockchain *light.LightChain
serverPool *serverPool
valueTracker *lpc.ValueTracker
bloomRequests chan chan *bloombits.Retrieval // Channel receiving bloom data retrieval requests
bloomIndexer *core.ChainIndexer // Bloom indexer operating during block imports
@ -74,6 +77,10 @@ func New(ctx *node.ServiceContext, config *eth.Config) (*LightEthereum, error) {
if err != nil {
return nil, err
}
lespayDb, err := ctx.OpenDatabase("lespay", 0, 0, "eth/db/lespay")
if err != nil {
return nil, err
}
chainConfig, genesisHash, genesisErr := core.SetupGenesisBlockWithOverride(chainDb, config.Genesis,
config.OverrideIstanbul, config.OverrideMuirGlacier)
if _, isCompat := genesisErr.(*params.ConfigCompatError); genesisErr != nil && !isCompat {
@ -99,7 +106,9 @@ func New(ctx *node.ServiceContext, config *eth.Config) (*LightEthereum, error) {
bloomRequests: make(chan chan *bloombits.Retrieval),
bloomIndexer: eth.NewBloomIndexer(chainDb, params.BloomBitsBlocksClient, params.HelperTrieConfirmations),
serverPool: newServerPool(chainDb, config.UltraLightServers),
valueTracker: lpc.NewValueTracker(lespayDb, &mclock.System{}, requestList, time.Minute, 1/float64(time.Hour), 1/float64(time.Hour*100), 1/float64(time.Hour*1000)),
}
peers.subscribe((*vtSubscription)(leth.valueTracker))
leth.retriever = newRetrieveManager(peers, leth.reqDist, leth.serverPool)
leth.relay = newLesTxRelay(peers, leth.retriever)
@ -154,6 +163,23 @@ func New(ctx *node.ServiceContext, config *eth.Config) (*LightEthereum, error) {
return leth, nil
}
// vtSubscription implements serverPeerSubscriber
type vtSubscription lpc.ValueTracker
// registerPeer implements serverPeerSubscriber
func (v *vtSubscription) registerPeer(p *serverPeer) {
vt := (*lpc.ValueTracker)(v)
p.setValueTracker(vt, vt.Register(p.ID()))
p.updateVtParams()
}
// unregisterPeer implements serverPeerSubscriber
func (v *vtSubscription) unregisterPeer(p *serverPeer) {
vt := (*lpc.ValueTracker)(v)
vt.Unregister(p.ID())
p.setValueTracker(nil, nil)
}
type LightDummyAPI struct{}
// Etherbase is the address that mining rewards will be send to
@ -207,6 +233,11 @@ func (s *LightEthereum) APIs() []rpc.API {
Version: "1.0",
Service: NewPrivateLightAPI(&s.lesCommons),
Public: false,
}, {
Namespace: "lespay",
Version: "1.0",
Service: lpc.NewPrivateClientAPI(s.valueTracker),
Public: false,
},
}...)
}
@ -266,6 +297,7 @@ func (s *LightEthereum) Stop() error {
s.engine.Close()
s.eventMux.Stop()
s.serverPool.stop()
s.valueTracker.Stop()
s.chainDb.Close()
s.wg.Wait()
log.Info("Light ethereum stopped")