plugeth/les/vflux/server/prioritypool_test.go

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// Copyright 2020 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 server
import (
"math/rand"
"reflect"
"testing"
"github.com/ethereum/go-ethereum/common/mclock"
"github.com/ethereum/go-ethereum/p2p/enode"
"github.com/ethereum/go-ethereum/p2p/enr"
"github.com/ethereum/go-ethereum/p2p/nodestate"
)
var (
testSetup = &nodestate.Setup{}
ppTestClientFlag = testSetup.NewFlag("ppTestClientFlag")
ppTestClientField = testSetup.NewField("ppTestClient", reflect.TypeOf(&ppTestClient{}))
ppUpdateFlag = testSetup.NewFlag("ppUpdateFlag")
ppTestSetup = NewPriorityPoolSetup(testSetup)
)
func init() {
ppTestSetup.Connect(ppTestClientField, ppUpdateFlag)
}
const (
testCapacityStepDiv = 100
testCapacityToleranceDiv = 10
)
type ppTestClient struct {
node *enode.Node
balance, cap uint64
}
func (c *ppTestClient) Priority(now mclock.AbsTime, cap uint64) int64 {
return int64(c.balance / cap)
}
func (c *ppTestClient) EstMinPriority(until mclock.AbsTime, cap uint64, update bool) int64 {
return int64(c.balance / cap)
}
func TestPriorityPool(t *testing.T) {
clock := &mclock.Simulated{}
ns := nodestate.NewNodeStateMachine(nil, nil, clock, testSetup)
ns.SubscribeField(ppTestSetup.CapacityField, func(node *enode.Node, state nodestate.Flags, oldValue, newValue interface{}) {
if n := ns.GetField(node, ppTestSetup.priorityField); n != nil {
c := n.(*ppTestClient)
c.cap = newValue.(uint64)
}
})
pp := NewPriorityPool(ns, ppTestSetup, clock, 100, 0, testCapacityStepDiv)
ns.Start()
pp.SetLimits(100, 1000000)
clients := make([]*ppTestClient, 100)
raise := func(c *ppTestClient) {
for {
var ok bool
ns.Operation(func() {
_, ok = pp.RequestCapacity(c.node, c.cap+c.cap/testCapacityStepDiv, 0, true)
})
if !ok {
return
}
}
}
var sumBalance uint64
check := func(c *ppTestClient) {
expCap := 1000000 * c.balance / sumBalance
capTol := expCap / testCapacityToleranceDiv
if c.cap < expCap-capTol || c.cap > expCap+capTol {
t.Errorf("Wrong node capacity (expected %d, got %d)", expCap, c.cap)
}
}
for i := range clients {
c := &ppTestClient{
node: enode.SignNull(&enr.Record{}, enode.ID{byte(i)}),
balance: 1000000000,
cap: 1000,
}
sumBalance += c.balance
clients[i] = c
ns.SetState(c.node, ppTestClientFlag, nodestate.Flags{}, 0)
ns.SetField(c.node, ppTestSetup.priorityField, c)
ns.SetState(c.node, ppTestSetup.InactiveFlag, nodestate.Flags{}, 0)
raise(c)
check(c)
}
for count := 0; count < 100; count++ {
c := clients[rand.Intn(len(clients))]
oldBalance := c.balance
c.balance = uint64(rand.Int63n(1000000000) + 1000000000)
sumBalance += c.balance - oldBalance
pp.ns.SetState(c.node, ppUpdateFlag, nodestate.Flags{}, 0)
pp.ns.SetState(c.node, nodestate.Flags{}, ppUpdateFlag, 0)
if c.balance > oldBalance {
raise(c)
} else {
for _, c := range clients {
raise(c)
}
}
for _, c := range clients {
check(c)
}
}
ns.Stop()
}