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les: implement server priority API (#20070)

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This PR implements the LES server RPC API. Methods for server
capacity, client balance and client priority management are provided.
This commit is contained in:
Felföldi Zsolt
2019-11-13 23:47:03 +01:00
committed by Felix Lange
parent 22e3bbbf0a
commit bf5c6b29fa
6 changed files with 597 additions and 107 deletions
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31
les/server.go
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@ -50,9 +50,9 @@ type LesServer struct {
servingQueue *servingQueue
clientPool *clientPool
freeCapacity uint64 // The minimal client capacity used for free client.
threadsIdle int // Request serving threads count when system is idle.
threadsBusy int // Request serving threads count when system is busy(block insertion).
minCapacity, maxCapacity, freeCapacity uint64
threadsIdle int // Request serving threads count when system is idle.
threadsBusy int // Request serving threads count when system is busy(block insertion).
}
func NewLesServer(e *eth.Ethereum, config *eth.Config) (*LesServer, error) {
@ -88,7 +88,8 @@ func NewLesServer(e *eth.Ethereum, config *eth.Config) (*LesServer, error) {
threadsIdle: threads,
}
srv.handler = newServerHandler(srv, e.BlockChain(), e.ChainDb(), e.TxPool(), e.Synced)
srv.costTracker, srv.freeCapacity = newCostTracker(e.ChainDb(), config)
srv.costTracker, srv.minCapacity = newCostTracker(e.ChainDb(), config)
srv.freeCapacity = srv.minCapacity
// Set up checkpoint oracle.
oracle := config.CheckpointOracle
@ -108,13 +109,13 @@ func NewLesServer(e *eth.Ethereum, config *eth.Config) (*LesServer, error) {
// to send requests most of the time. Our goal is to serve as many clients as
// possible while the actually used server capacity does not exceed the limits
totalRecharge := srv.costTracker.totalRecharge()
maxCapacity := srv.freeCapacity * uint64(srv.config.LightPeers)
if totalRecharge > maxCapacity {
maxCapacity = totalRecharge
srv.maxCapacity = srv.freeCapacity * uint64(srv.config.LightPeers)
if totalRecharge > srv.maxCapacity {
srv.maxCapacity = totalRecharge
}
srv.fcManager.SetCapacityLimits(srv.freeCapacity, maxCapacity, srv.freeCapacity*2)
srv.fcManager.SetCapacityLimits(srv.freeCapacity, srv.maxCapacity, srv.freeCapacity*2)
srv.clientPool = newClientPool(srv.chainDb, srv.freeCapacity, mclock.System{}, func(id enode.ID) { go srv.peers.Unregister(peerIdToString(id)) })
srv.clientPool.setPriceFactors(priceFactors{0, 1, 1}, priceFactors{0, 1, 1})
srv.clientPool.setDefaultFactors(priceFactors{0, 1, 1}, priceFactors{0, 1, 1})
checkpoint := srv.latestLocalCheckpoint()
if !checkpoint.Empty() {
@ -133,6 +134,18 @@ func (s *LesServer) APIs() []rpc.API {
Service: NewPrivateLightAPI(&s.lesCommons),
Public: false,
},
{
Namespace: "les",
Version: "1.0",
Service: NewPrivateLightServerAPI(s),
Public: false,
},
{
Namespace: "debug",
Version: "1.0",
Service: NewPrivateDebugAPI(s),
Public: false,
},
}
}