mirror of
https://gitlab.com/pulsechaincom/go-pulse.git
synced 2024-12-24 12:27:17 +00:00
b4a2681120
This PR reimplements the light client server pool. It is also a first step to move certain logic into a new lespay package. This package will contain the implementation of the lespay token sale functions, the token buying and selling logic and other components related to peer selection/prioritization and service quality evaluation. Over the long term this package will be reusable for incentivizing future protocols. Since the LES peer logic is now based on enode.Iterator, it can now use DNS-based fallback discovery to find servers. This document describes the function of the new components: https://gist.github.com/zsfelfoldi/3c7ace895234b7b345ab4f71dab102d4
390 lines
11 KiB
Go
390 lines
11 KiB
Go
// 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 nodestate
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"reflect"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum/common/mclock"
|
|
"github.com/ethereum/go-ethereum/core/rawdb"
|
|
"github.com/ethereum/go-ethereum/p2p/enode"
|
|
"github.com/ethereum/go-ethereum/p2p/enr"
|
|
"github.com/ethereum/go-ethereum/rlp"
|
|
)
|
|
|
|
func testSetup(flagPersist []bool, fieldType []reflect.Type) (*Setup, []Flags, []Field) {
|
|
setup := &Setup{}
|
|
flags := make([]Flags, len(flagPersist))
|
|
for i, persist := range flagPersist {
|
|
if persist {
|
|
flags[i] = setup.NewPersistentFlag(fmt.Sprintf("flag-%d", i))
|
|
} else {
|
|
flags[i] = setup.NewFlag(fmt.Sprintf("flag-%d", i))
|
|
}
|
|
}
|
|
fields := make([]Field, len(fieldType))
|
|
for i, ftype := range fieldType {
|
|
switch ftype {
|
|
case reflect.TypeOf(uint64(0)):
|
|
fields[i] = setup.NewPersistentField(fmt.Sprintf("field-%d", i), ftype, uint64FieldEnc, uint64FieldDec)
|
|
case reflect.TypeOf(""):
|
|
fields[i] = setup.NewPersistentField(fmt.Sprintf("field-%d", i), ftype, stringFieldEnc, stringFieldDec)
|
|
default:
|
|
fields[i] = setup.NewField(fmt.Sprintf("field-%d", i), ftype)
|
|
}
|
|
}
|
|
return setup, flags, fields
|
|
}
|
|
|
|
func testNode(b byte) *enode.Node {
|
|
r := &enr.Record{}
|
|
r.SetSig(dummyIdentity{b}, []byte{42})
|
|
n, _ := enode.New(dummyIdentity{b}, r)
|
|
return n
|
|
}
|
|
|
|
func TestCallback(t *testing.T) {
|
|
mdb, clock := rawdb.NewMemoryDatabase(), &mclock.Simulated{}
|
|
|
|
s, flags, _ := testSetup([]bool{false, false, false}, nil)
|
|
ns := NewNodeStateMachine(mdb, []byte("-ns"), clock, s)
|
|
|
|
set0 := make(chan struct{}, 1)
|
|
set1 := make(chan struct{}, 1)
|
|
set2 := make(chan struct{}, 1)
|
|
ns.SubscribeState(flags[0], func(n *enode.Node, oldState, newState Flags) { set0 <- struct{}{} })
|
|
ns.SubscribeState(flags[1], func(n *enode.Node, oldState, newState Flags) { set1 <- struct{}{} })
|
|
ns.SubscribeState(flags[2], func(n *enode.Node, oldState, newState Flags) { set2 <- struct{}{} })
|
|
|
|
ns.Start()
|
|
|
|
ns.SetState(testNode(1), flags[0], Flags{}, 0)
|
|
ns.SetState(testNode(1), flags[1], Flags{}, time.Second)
|
|
ns.SetState(testNode(1), flags[2], Flags{}, 2*time.Second)
|
|
|
|
for i := 0; i < 3; i++ {
|
|
select {
|
|
case <-set0:
|
|
case <-set1:
|
|
case <-set2:
|
|
case <-time.After(time.Second):
|
|
t.Fatalf("failed to invoke callback")
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestPersistentFlags(t *testing.T) {
|
|
mdb, clock := rawdb.NewMemoryDatabase(), &mclock.Simulated{}
|
|
|
|
s, flags, _ := testSetup([]bool{true, true, true, false}, nil)
|
|
ns := NewNodeStateMachine(mdb, []byte("-ns"), clock, s)
|
|
|
|
saveNode := make(chan *nodeInfo, 5)
|
|
ns.saveNodeHook = func(node *nodeInfo) {
|
|
saveNode <- node
|
|
}
|
|
|
|
ns.Start()
|
|
|
|
ns.SetState(testNode(1), flags[0], Flags{}, time.Second) // state with timeout should not be saved
|
|
ns.SetState(testNode(2), flags[1], Flags{}, 0)
|
|
ns.SetState(testNode(3), flags[2], Flags{}, 0)
|
|
ns.SetState(testNode(4), flags[3], Flags{}, 0)
|
|
ns.SetState(testNode(5), flags[0], Flags{}, 0)
|
|
ns.Persist(testNode(5))
|
|
select {
|
|
case <-saveNode:
|
|
case <-time.After(time.Second):
|
|
t.Fatalf("Timeout")
|
|
}
|
|
ns.Stop()
|
|
|
|
for i := 0; i < 2; i++ {
|
|
select {
|
|
case <-saveNode:
|
|
case <-time.After(time.Second):
|
|
t.Fatalf("Timeout")
|
|
}
|
|
}
|
|
select {
|
|
case <-saveNode:
|
|
t.Fatalf("Unexpected saveNode")
|
|
case <-time.After(time.Millisecond * 100):
|
|
}
|
|
}
|
|
|
|
func TestSetField(t *testing.T) {
|
|
mdb, clock := rawdb.NewMemoryDatabase(), &mclock.Simulated{}
|
|
|
|
s, flags, fields := testSetup([]bool{true}, []reflect.Type{reflect.TypeOf("")})
|
|
ns := NewNodeStateMachine(mdb, []byte("-ns"), clock, s)
|
|
|
|
saveNode := make(chan *nodeInfo, 1)
|
|
ns.saveNodeHook = func(node *nodeInfo) {
|
|
saveNode <- node
|
|
}
|
|
|
|
ns.Start()
|
|
|
|
// Set field before setting state
|
|
ns.SetField(testNode(1), fields[0], "hello world")
|
|
field := ns.GetField(testNode(1), fields[0])
|
|
if field != nil {
|
|
t.Fatalf("Field shouldn't be set before setting states")
|
|
}
|
|
// Set field after setting state
|
|
ns.SetState(testNode(1), flags[0], Flags{}, 0)
|
|
ns.SetField(testNode(1), fields[0], "hello world")
|
|
field = ns.GetField(testNode(1), fields[0])
|
|
if field == nil {
|
|
t.Fatalf("Field should be set after setting states")
|
|
}
|
|
if err := ns.SetField(testNode(1), fields[0], 123); err == nil {
|
|
t.Fatalf("Invalid field should be rejected")
|
|
}
|
|
// Dirty node should be written back
|
|
ns.Stop()
|
|
select {
|
|
case <-saveNode:
|
|
case <-time.After(time.Second):
|
|
t.Fatalf("Timeout")
|
|
}
|
|
}
|
|
|
|
func TestUnsetField(t *testing.T) {
|
|
mdb, clock := rawdb.NewMemoryDatabase(), &mclock.Simulated{}
|
|
|
|
s, flags, fields := testSetup([]bool{false}, []reflect.Type{reflect.TypeOf("")})
|
|
ns := NewNodeStateMachine(mdb, []byte("-ns"), clock, s)
|
|
|
|
ns.Start()
|
|
|
|
ns.SetState(testNode(1), flags[0], Flags{}, time.Second)
|
|
ns.SetField(testNode(1), fields[0], "hello world")
|
|
|
|
ns.SetState(testNode(1), Flags{}, flags[0], 0)
|
|
if field := ns.GetField(testNode(1), fields[0]); field != nil {
|
|
t.Fatalf("Field should be unset")
|
|
}
|
|
}
|
|
|
|
func TestSetState(t *testing.T) {
|
|
mdb, clock := rawdb.NewMemoryDatabase(), &mclock.Simulated{}
|
|
|
|
s, flags, _ := testSetup([]bool{false, false, false}, nil)
|
|
ns := NewNodeStateMachine(mdb, []byte("-ns"), clock, s)
|
|
|
|
type change struct{ old, new Flags }
|
|
set := make(chan change, 1)
|
|
ns.SubscribeState(flags[0].Or(flags[1]), func(n *enode.Node, oldState, newState Flags) {
|
|
set <- change{
|
|
old: oldState,
|
|
new: newState,
|
|
}
|
|
})
|
|
|
|
ns.Start()
|
|
|
|
check := func(expectOld, expectNew Flags, expectChange bool) {
|
|
if expectChange {
|
|
select {
|
|
case c := <-set:
|
|
if !c.old.Equals(expectOld) {
|
|
t.Fatalf("Old state mismatch")
|
|
}
|
|
if !c.new.Equals(expectNew) {
|
|
t.Fatalf("New state mismatch")
|
|
}
|
|
case <-time.After(time.Second):
|
|
}
|
|
return
|
|
}
|
|
select {
|
|
case <-set:
|
|
t.Fatalf("Unexpected change")
|
|
case <-time.After(time.Millisecond * 100):
|
|
return
|
|
}
|
|
}
|
|
ns.SetState(testNode(1), flags[0], Flags{}, 0)
|
|
check(Flags{}, flags[0], true)
|
|
|
|
ns.SetState(testNode(1), flags[1], Flags{}, 0)
|
|
check(flags[0], flags[0].Or(flags[1]), true)
|
|
|
|
ns.SetState(testNode(1), flags[2], Flags{}, 0)
|
|
check(Flags{}, Flags{}, false)
|
|
|
|
ns.SetState(testNode(1), Flags{}, flags[0], 0)
|
|
check(flags[0].Or(flags[1]), flags[1], true)
|
|
|
|
ns.SetState(testNode(1), Flags{}, flags[1], 0)
|
|
check(flags[1], Flags{}, true)
|
|
|
|
ns.SetState(testNode(1), Flags{}, flags[2], 0)
|
|
check(Flags{}, Flags{}, false)
|
|
|
|
ns.SetState(testNode(1), flags[0].Or(flags[1]), Flags{}, time.Second)
|
|
check(Flags{}, flags[0].Or(flags[1]), true)
|
|
clock.Run(time.Second)
|
|
check(flags[0].Or(flags[1]), Flags{}, true)
|
|
}
|
|
|
|
func uint64FieldEnc(field interface{}) ([]byte, error) {
|
|
if u, ok := field.(uint64); ok {
|
|
enc, err := rlp.EncodeToBytes(&u)
|
|
return enc, err
|
|
} else {
|
|
return nil, errors.New("invalid field type")
|
|
}
|
|
}
|
|
|
|
func uint64FieldDec(enc []byte) (interface{}, error) {
|
|
var u uint64
|
|
err := rlp.DecodeBytes(enc, &u)
|
|
return u, err
|
|
}
|
|
|
|
func stringFieldEnc(field interface{}) ([]byte, error) {
|
|
if s, ok := field.(string); ok {
|
|
return []byte(s), nil
|
|
} else {
|
|
return nil, errors.New("invalid field type")
|
|
}
|
|
}
|
|
|
|
func stringFieldDec(enc []byte) (interface{}, error) {
|
|
return string(enc), nil
|
|
}
|
|
|
|
func TestPersistentFields(t *testing.T) {
|
|
mdb, clock := rawdb.NewMemoryDatabase(), &mclock.Simulated{}
|
|
|
|
s, flags, fields := testSetup([]bool{true}, []reflect.Type{reflect.TypeOf(uint64(0)), reflect.TypeOf("")})
|
|
ns := NewNodeStateMachine(mdb, []byte("-ns"), clock, s)
|
|
|
|
ns.Start()
|
|
ns.SetState(testNode(1), flags[0], Flags{}, 0)
|
|
ns.SetField(testNode(1), fields[0], uint64(100))
|
|
ns.SetField(testNode(1), fields[1], "hello world")
|
|
ns.Stop()
|
|
|
|
ns2 := NewNodeStateMachine(mdb, []byte("-ns"), clock, s)
|
|
|
|
ns2.Start()
|
|
field0 := ns2.GetField(testNode(1), fields[0])
|
|
if !reflect.DeepEqual(field0, uint64(100)) {
|
|
t.Fatalf("Field changed")
|
|
}
|
|
field1 := ns2.GetField(testNode(1), fields[1])
|
|
if !reflect.DeepEqual(field1, "hello world") {
|
|
t.Fatalf("Field changed")
|
|
}
|
|
|
|
s.Version++
|
|
ns3 := NewNodeStateMachine(mdb, []byte("-ns"), clock, s)
|
|
ns3.Start()
|
|
if ns3.GetField(testNode(1), fields[0]) != nil {
|
|
t.Fatalf("Old field version should have been discarded")
|
|
}
|
|
}
|
|
|
|
func TestFieldSub(t *testing.T) {
|
|
mdb, clock := rawdb.NewMemoryDatabase(), &mclock.Simulated{}
|
|
|
|
s, flags, fields := testSetup([]bool{true}, []reflect.Type{reflect.TypeOf(uint64(0))})
|
|
ns := NewNodeStateMachine(mdb, []byte("-ns"), clock, s)
|
|
|
|
var (
|
|
lastState Flags
|
|
lastOldValue, lastNewValue interface{}
|
|
)
|
|
ns.SubscribeField(fields[0], func(n *enode.Node, state Flags, oldValue, newValue interface{}) {
|
|
lastState, lastOldValue, lastNewValue = state, oldValue, newValue
|
|
})
|
|
check := func(state Flags, oldValue, newValue interface{}) {
|
|
if !lastState.Equals(state) || lastOldValue != oldValue || lastNewValue != newValue {
|
|
t.Fatalf("Incorrect field sub callback (expected [%v %v %v], got [%v %v %v])", state, oldValue, newValue, lastState, lastOldValue, lastNewValue)
|
|
}
|
|
}
|
|
ns.Start()
|
|
ns.SetState(testNode(1), flags[0], Flags{}, 0)
|
|
ns.SetField(testNode(1), fields[0], uint64(100))
|
|
check(flags[0], nil, uint64(100))
|
|
ns.Stop()
|
|
check(s.OfflineFlag(), uint64(100), nil)
|
|
|
|
ns2 := NewNodeStateMachine(mdb, []byte("-ns"), clock, s)
|
|
ns2.SubscribeField(fields[0], func(n *enode.Node, state Flags, oldValue, newValue interface{}) {
|
|
lastState, lastOldValue, lastNewValue = state, oldValue, newValue
|
|
})
|
|
ns2.Start()
|
|
check(s.OfflineFlag(), nil, uint64(100))
|
|
ns2.SetState(testNode(1), Flags{}, flags[0], 0)
|
|
check(Flags{}, uint64(100), nil)
|
|
ns2.Stop()
|
|
}
|
|
|
|
func TestDuplicatedFlags(t *testing.T) {
|
|
mdb, clock := rawdb.NewMemoryDatabase(), &mclock.Simulated{}
|
|
|
|
s, flags, _ := testSetup([]bool{true}, nil)
|
|
ns := NewNodeStateMachine(mdb, []byte("-ns"), clock, s)
|
|
|
|
type change struct{ old, new Flags }
|
|
set := make(chan change, 1)
|
|
ns.SubscribeState(flags[0], func(n *enode.Node, oldState, newState Flags) {
|
|
set <- change{oldState, newState}
|
|
})
|
|
|
|
ns.Start()
|
|
defer ns.Stop()
|
|
|
|
check := func(expectOld, expectNew Flags, expectChange bool) {
|
|
if expectChange {
|
|
select {
|
|
case c := <-set:
|
|
if !c.old.Equals(expectOld) {
|
|
t.Fatalf("Old state mismatch")
|
|
}
|
|
if !c.new.Equals(expectNew) {
|
|
t.Fatalf("New state mismatch")
|
|
}
|
|
case <-time.After(time.Second):
|
|
}
|
|
return
|
|
}
|
|
select {
|
|
case <-set:
|
|
t.Fatalf("Unexpected change")
|
|
case <-time.After(time.Millisecond * 100):
|
|
return
|
|
}
|
|
}
|
|
ns.SetState(testNode(1), flags[0], Flags{}, time.Second)
|
|
check(Flags{}, flags[0], true)
|
|
ns.SetState(testNode(1), flags[0], Flags{}, 2*time.Second) // extend the timeout to 2s
|
|
check(Flags{}, flags[0], false)
|
|
|
|
clock.Run(2 * time.Second)
|
|
check(flags[0], Flags{}, true)
|
|
}
|