mirror of https://github.com/ethereum/go-ethereum
p2p/nodestate: remove unused package (#29872)
lilasxie
6 months ago
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daf4f72077
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153f8da887
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@ -1,407 +0,0 @@ |
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// Copyright 2020 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package nodestate |
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import ( |
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"errors" |
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"fmt" |
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"reflect" |
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"testing" |
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"time" |
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"github.com/ethereum/go-ethereum/common/mclock" |
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"github.com/ethereum/go-ethereum/core/rawdb" |
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"github.com/ethereum/go-ethereum/p2p/enode" |
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"github.com/ethereum/go-ethereum/p2p/enr" |
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"github.com/ethereum/go-ethereum/rlp" |
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) |
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func testSetup(flagPersist []bool, fieldType []reflect.Type) (*Setup, []Flags, []Field) { |
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setup := &Setup{} |
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flags := make([]Flags, len(flagPersist)) |
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for i, persist := range flagPersist { |
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if persist { |
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flags[i] = setup.NewPersistentFlag(fmt.Sprintf("flag-%d", i)) |
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} else { |
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flags[i] = setup.NewFlag(fmt.Sprintf("flag-%d", i)) |
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} |
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} |
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fields := make([]Field, len(fieldType)) |
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for i, ftype := range fieldType { |
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switch ftype { |
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case reflect.TypeOf(uint64(0)): |
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fields[i] = setup.NewPersistentField(fmt.Sprintf("field-%d", i), ftype, uint64FieldEnc, uint64FieldDec) |
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case reflect.TypeOf(""): |
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fields[i] = setup.NewPersistentField(fmt.Sprintf("field-%d", i), ftype, stringFieldEnc, stringFieldDec) |
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default: |
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fields[i] = setup.NewField(fmt.Sprintf("field-%d", i), ftype) |
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} |
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} |
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return setup, flags, fields |
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} |
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func testNode(b byte) *enode.Node { |
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r := &enr.Record{} |
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r.SetSig(dummyIdentity{b}, []byte{42}) |
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n, _ := enode.New(dummyIdentity{b}, r) |
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return n |
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} |
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func TestCallback(t *testing.T) { |
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mdb, clock := rawdb.NewMemoryDatabase(), &mclock.Simulated{} |
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s, flags, _ := testSetup([]bool{false, false, false}, nil) |
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ns := NewNodeStateMachine(mdb, []byte("-ns"), clock, s) |
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set0 := make(chan struct{}, 1) |
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set1 := make(chan struct{}, 1) |
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set2 := make(chan struct{}, 1) |
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ns.SubscribeState(flags[0], func(n *enode.Node, oldState, newState Flags) { set0 <- struct{}{} }) |
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ns.SubscribeState(flags[1], func(n *enode.Node, oldState, newState Flags) { set1 <- struct{}{} }) |
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ns.SubscribeState(flags[2], func(n *enode.Node, oldState, newState Flags) { set2 <- struct{}{} }) |
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ns.Start() |
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ns.SetState(testNode(1), flags[0], Flags{}, 0) |
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ns.SetState(testNode(1), flags[1], Flags{}, time.Second) |
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ns.SetState(testNode(1), flags[2], Flags{}, 2*time.Second) |
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for i := 0; i < 3; i++ { |
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select { |
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case <-set0: |
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case <-set1: |
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case <-set2: |
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case <-time.After(time.Second): |
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t.Fatalf("failed to invoke callback") |
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} |
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} |
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} |
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func TestPersistentFlags(t *testing.T) { |
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mdb, clock := rawdb.NewMemoryDatabase(), &mclock.Simulated{} |
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s, flags, _ := testSetup([]bool{true, true, true, false}, nil) |
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ns := NewNodeStateMachine(mdb, []byte("-ns"), clock, s) |
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saveNode := make(chan *nodeInfo, 5) |
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ns.saveNodeHook = func(node *nodeInfo) { |
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saveNode <- node |
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} |
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ns.Start() |
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ns.SetState(testNode(1), flags[0], Flags{}, time.Second) // state with timeout should not be saved
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ns.SetState(testNode(2), flags[1], Flags{}, 0) |
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ns.SetState(testNode(3), flags[2], Flags{}, 0) |
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ns.SetState(testNode(4), flags[3], Flags{}, 0) |
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ns.SetState(testNode(5), flags[0], Flags{}, 0) |
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ns.Persist(testNode(5)) |
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select { |
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case <-saveNode: |
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case <-time.After(time.Second): |
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t.Fatalf("Timeout") |
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} |
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ns.Stop() |
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for i := 0; i < 2; i++ { |
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select { |
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case <-saveNode: |
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case <-time.After(time.Second): |
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t.Fatalf("Timeout") |
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} |
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} |
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select { |
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case <-saveNode: |
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t.Fatalf("Unexpected saveNode") |
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case <-time.After(time.Millisecond * 100): |
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} |
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} |
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func TestSetField(t *testing.T) { |
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mdb, clock := rawdb.NewMemoryDatabase(), &mclock.Simulated{} |
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s, flags, fields := testSetup([]bool{true}, []reflect.Type{reflect.TypeOf("")}) |
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ns := NewNodeStateMachine(mdb, []byte("-ns"), clock, s) |
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saveNode := make(chan *nodeInfo, 1) |
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ns.saveNodeHook = func(node *nodeInfo) { |
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saveNode <- node |
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} |
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ns.Start() |
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// Set field before setting state
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ns.SetField(testNode(1), fields[0], "hello world") |
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field := ns.GetField(testNode(1), fields[0]) |
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if field == nil { |
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t.Fatalf("Field should be set before setting states") |
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} |
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ns.SetField(testNode(1), fields[0], nil) |
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field = ns.GetField(testNode(1), fields[0]) |
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if field != nil { |
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t.Fatalf("Field should be unset") |
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} |
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// Set field after setting state
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ns.SetState(testNode(1), flags[0], Flags{}, 0) |
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ns.SetField(testNode(1), fields[0], "hello world") |
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field = ns.GetField(testNode(1), fields[0]) |
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if field == nil { |
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t.Fatalf("Field should be set after setting states") |
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} |
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if err := ns.SetField(testNode(1), fields[0], 123); err == nil { |
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t.Fatalf("Invalid field should be rejected") |
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} |
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// Dirty node should be written back
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ns.Stop() |
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select { |
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case <-saveNode: |
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case <-time.After(time.Second): |
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t.Fatalf("Timeout") |
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} |
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} |
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func TestSetState(t *testing.T) { |
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mdb, clock := rawdb.NewMemoryDatabase(), &mclock.Simulated{} |
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s, flags, _ := testSetup([]bool{false, false, false}, nil) |
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ns := NewNodeStateMachine(mdb, []byte("-ns"), clock, s) |
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type change struct{ old, new Flags } |
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set := make(chan change, 1) |
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ns.SubscribeState(flags[0].Or(flags[1]), func(n *enode.Node, oldState, newState Flags) { |
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set <- change{ |
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old: oldState, |
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new: newState, |
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} |
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}) |
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ns.Start() |
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check := func(expectOld, expectNew Flags, expectChange bool) { |
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if expectChange { |
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select { |
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case c := <-set: |
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if !c.old.Equals(expectOld) { |
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t.Fatalf("Old state mismatch") |
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} |
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if !c.new.Equals(expectNew) { |
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t.Fatalf("New state mismatch") |
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} |
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case <-time.After(time.Second): |
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} |
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return |
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} |
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select { |
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case <-set: |
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t.Fatalf("Unexpected change") |
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case <-time.After(time.Millisecond * 100): |
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return |
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} |
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} |
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ns.SetState(testNode(1), flags[0], Flags{}, 0) |
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check(Flags{}, flags[0], true) |
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ns.SetState(testNode(1), flags[1], Flags{}, 0) |
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check(flags[0], flags[0].Or(flags[1]), true) |
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ns.SetState(testNode(1), flags[2], Flags{}, 0) |
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check(Flags{}, Flags{}, false) |
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ns.SetState(testNode(1), Flags{}, flags[0], 0) |
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check(flags[0].Or(flags[1]), flags[1], true) |
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ns.SetState(testNode(1), Flags{}, flags[1], 0) |
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check(flags[1], Flags{}, true) |
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ns.SetState(testNode(1), Flags{}, flags[2], 0) |
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check(Flags{}, Flags{}, false) |
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ns.SetState(testNode(1), flags[0].Or(flags[1]), Flags{}, time.Second) |
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check(Flags{}, flags[0].Or(flags[1]), true) |
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clock.Run(time.Second) |
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check(flags[0].Or(flags[1]), Flags{}, true) |
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} |
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func uint64FieldEnc(field interface{}) ([]byte, error) { |
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if u, ok := field.(uint64); ok { |
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enc, err := rlp.EncodeToBytes(&u) |
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return enc, err |
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} |
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return nil, errors.New("invalid field type") |
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} |
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func uint64FieldDec(enc []byte) (interface{}, error) { |
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var u uint64 |
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err := rlp.DecodeBytes(enc, &u) |
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return u, err |
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} |
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func stringFieldEnc(field interface{}) ([]byte, error) { |
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if s, ok := field.(string); ok { |
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return []byte(s), nil |
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} |
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return nil, errors.New("invalid field type") |
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} |
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func stringFieldDec(enc []byte) (interface{}, error) { |
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return string(enc), nil |
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} |
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func TestPersistentFields(t *testing.T) { |
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mdb, clock := rawdb.NewMemoryDatabase(), &mclock.Simulated{} |
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s, flags, fields := testSetup([]bool{true}, []reflect.Type{reflect.TypeOf(uint64(0)), reflect.TypeOf("")}) |
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ns := NewNodeStateMachine(mdb, []byte("-ns"), clock, s) |
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ns.Start() |
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ns.SetState(testNode(1), flags[0], Flags{}, 0) |
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ns.SetField(testNode(1), fields[0], uint64(100)) |
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ns.SetField(testNode(1), fields[1], "hello world") |
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ns.Stop() |
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ns2 := NewNodeStateMachine(mdb, []byte("-ns"), clock, s) |
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ns2.Start() |
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field0 := ns2.GetField(testNode(1), fields[0]) |
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if !reflect.DeepEqual(field0, uint64(100)) { |
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t.Fatalf("Field changed") |
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} |
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field1 := ns2.GetField(testNode(1), fields[1]) |
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if !reflect.DeepEqual(field1, "hello world") { |
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t.Fatalf("Field changed") |
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} |
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s.Version++ |
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ns3 := NewNodeStateMachine(mdb, []byte("-ns"), clock, s) |
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ns3.Start() |
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if ns3.GetField(testNode(1), fields[0]) != nil { |
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t.Fatalf("Old field version should have been discarded") |
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} |
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} |
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func TestFieldSub(t *testing.T) { |
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mdb, clock := rawdb.NewMemoryDatabase(), &mclock.Simulated{} |
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s, flags, fields := testSetup([]bool{true}, []reflect.Type{reflect.TypeOf(uint64(0))}) |
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ns := NewNodeStateMachine(mdb, []byte("-ns"), clock, s) |
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var ( |
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lastState Flags |
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lastOldValue, lastNewValue interface{} |
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) |
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ns.SubscribeField(fields[0], func(n *enode.Node, state Flags, oldValue, newValue interface{}) { |
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lastState, lastOldValue, lastNewValue = state, oldValue, newValue |
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}) |
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check := func(state Flags, oldValue, newValue interface{}) { |
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if !lastState.Equals(state) || lastOldValue != oldValue || lastNewValue != newValue { |
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t.Fatalf("Incorrect field sub callback (expected [%v %v %v], got [%v %v %v])", state, oldValue, newValue, lastState, lastOldValue, lastNewValue) |
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} |
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} |
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ns.Start() |
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ns.SetState(testNode(1), flags[0], Flags{}, 0) |
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ns.SetField(testNode(1), fields[0], uint64(100)) |
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check(flags[0], nil, uint64(100)) |
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ns.Stop() |
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check(s.OfflineFlag(), uint64(100), nil) |
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ns2 := NewNodeStateMachine(mdb, []byte("-ns"), clock, s) |
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ns2.SubscribeField(fields[0], func(n *enode.Node, state Flags, oldValue, newValue interface{}) { |
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lastState, lastOldValue, lastNewValue = state, oldValue, newValue |
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}) |
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ns2.Start() |
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check(s.OfflineFlag(), nil, uint64(100)) |
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ns2.SetState(testNode(1), Flags{}, flags[0], 0) |
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ns2.SetField(testNode(1), fields[0], nil) |
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check(Flags{}, uint64(100), nil) |
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ns2.Stop() |
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} |
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func TestDuplicatedFlags(t *testing.T) { |
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mdb, clock := rawdb.NewMemoryDatabase(), &mclock.Simulated{} |
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s, flags, _ := testSetup([]bool{true}, nil) |
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ns := NewNodeStateMachine(mdb, []byte("-ns"), clock, s) |
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type change struct{ old, new Flags } |
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set := make(chan change, 1) |
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ns.SubscribeState(flags[0], func(n *enode.Node, oldState, newState Flags) { |
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set <- change{oldState, newState} |
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}) |
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ns.Start() |
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defer ns.Stop() |
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check := func(expectOld, expectNew Flags, expectChange bool) { |
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if expectChange { |
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select { |
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case c := <-set: |
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if !c.old.Equals(expectOld) { |
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t.Fatalf("Old state mismatch") |
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} |
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if !c.new.Equals(expectNew) { |
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t.Fatalf("New state mismatch") |
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} |
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case <-time.After(time.Second): |
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} |
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return |
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} |
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select { |
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case <-set: |
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t.Fatalf("Unexpected change") |
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case <-time.After(time.Millisecond * 100): |
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return |
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} |
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} |
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ns.SetState(testNode(1), flags[0], Flags{}, time.Second) |
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check(Flags{}, flags[0], true) |
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ns.SetState(testNode(1), flags[0], Flags{}, 2*time.Second) // extend the timeout to 2s
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check(Flags{}, flags[0], false) |
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clock.Run(2 * time.Second) |
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check(flags[0], Flags{}, true) |
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} |
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func TestCallbackOrder(t *testing.T) { |
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mdb, clock := rawdb.NewMemoryDatabase(), &mclock.Simulated{} |
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s, flags, _ := testSetup([]bool{false, false, false, false}, nil) |
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ns := NewNodeStateMachine(mdb, []byte("-ns"), clock, s) |
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ns.SubscribeState(flags[0], func(n *enode.Node, oldState, newState Flags) { |
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if newState.Equals(flags[0]) { |
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ns.SetStateSub(n, flags[1], Flags{}, 0) |
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ns.SetStateSub(n, flags[2], Flags{}, 0) |
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} |
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}) |
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ns.SubscribeState(flags[1], func(n *enode.Node, oldState, newState Flags) { |
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if newState.Equals(flags[1]) { |
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ns.SetStateSub(n, flags[3], Flags{}, 0) |
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} |
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}) |
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lastState := Flags{} |
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ns.SubscribeState(MergeFlags(flags[1], flags[2], flags[3]), func(n *enode.Node, oldState, newState Flags) { |
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if !oldState.Equals(lastState) { |
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t.Fatalf("Wrong callback order") |
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} |
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lastState = newState |
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}) |
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ns.Start() |
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defer ns.Stop() |
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ns.SetState(testNode(1), flags[0], Flags{}, 0) |
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} |
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