plugeth/les/lespay/client/wrsiterator_test.go
Felföldi Zsolt b4a2681120
les, les/lespay: implement new server pool (#20758)
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
2020-05-22 13:46:34 +02:00

104 lines
3.1 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 client
import (
"reflect"
"testing"
"time"
"github.com/ethereum/go-ethereum/common/mclock"
"github.com/ethereum/go-ethereum/p2p/nodestate"
)
var (
testSetup = &nodestate.Setup{}
sfTest1 = testSetup.NewFlag("test1")
sfTest2 = testSetup.NewFlag("test2")
sfTest3 = testSetup.NewFlag("test3")
sfTest4 = testSetup.NewFlag("test4")
sfiTestWeight = testSetup.NewField("nodeWeight", reflect.TypeOf(uint64(0)))
)
const iterTestNodeCount = 6
func TestWrsIterator(t *testing.T) {
ns := nodestate.NewNodeStateMachine(nil, nil, &mclock.Simulated{}, testSetup)
w := NewWrsIterator(ns, sfTest2, sfTest3.Or(sfTest4), sfiTestWeight)
ns.Start()
for i := 1; i <= iterTestNodeCount; i++ {
ns.SetState(testNode(i), sfTest1, nodestate.Flags{}, 0)
ns.SetField(testNode(i), sfiTestWeight, uint64(1))
}
next := func() int {
ch := make(chan struct{})
go func() {
w.Next()
close(ch)
}()
select {
case <-ch:
case <-time.After(time.Second * 5):
t.Fatalf("Iterator.Next() timeout")
}
node := w.Node()
ns.SetState(node, sfTest4, nodestate.Flags{}, 0)
return testNodeIndex(node.ID())
}
set := make(map[int]bool)
expset := func() {
for len(set) > 0 {
n := next()
if !set[n] {
t.Errorf("Item returned by iterator not in the expected set (got %d)", n)
}
delete(set, n)
}
}
ns.SetState(testNode(1), sfTest2, nodestate.Flags{}, 0)
ns.SetState(testNode(2), sfTest2, nodestate.Flags{}, 0)
ns.SetState(testNode(3), sfTest2, nodestate.Flags{}, 0)
set[1] = true
set[2] = true
set[3] = true
expset()
ns.SetState(testNode(4), sfTest2, nodestate.Flags{}, 0)
ns.SetState(testNode(5), sfTest2.Or(sfTest3), nodestate.Flags{}, 0)
ns.SetState(testNode(6), sfTest2, nodestate.Flags{}, 0)
set[4] = true
set[6] = true
expset()
ns.SetField(testNode(2), sfiTestWeight, uint64(0))
ns.SetState(testNode(1), nodestate.Flags{}, sfTest4, 0)
ns.SetState(testNode(2), nodestate.Flags{}, sfTest4, 0)
ns.SetState(testNode(3), nodestate.Flags{}, sfTest4, 0)
set[1] = true
set[3] = true
expset()
ns.SetField(testNode(2), sfiTestWeight, uint64(1))
ns.SetState(testNode(2), nodestate.Flags{}, sfTest2, 0)
ns.SetState(testNode(1), nodestate.Flags{}, sfTest4, 0)
ns.SetState(testNode(2), sfTest2, sfTest4, 0)
ns.SetState(testNode(3), nodestate.Flags{}, sfTest4, 0)
set[1] = true
set[2] = true
set[3] = true
expset()
ns.Stop()
}