6f607de5d5
This PR adds enode.LocalNode and integrates it into the p2p subsystem. This new object is the keeper of the local node record. For now, a new version of the record is produced every time the client restarts. We'll make it smarter to avoid that in the future. There are a couple of other changes in this commit: discovery now waits for all of its goroutines at shutdown and the p2p server now closes the node database after discovery has shut down. This fixes a leveldb crash in tests. p2p server startup is faster because it doesn't need to wait for the external IP query anymore.
77 lines
2.3 KiB
Go
77 lines
2.3 KiB
Go
// Copyright 2018 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 enode
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import (
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"testing"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/p2p/enr"
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)
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func newLocalNodeForTesting() (*LocalNode, *DB) {
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db, _ := OpenDB("")
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key, _ := crypto.GenerateKey()
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return NewLocalNode(db, key), db
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}
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func TestLocalNode(t *testing.T) {
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ln, db := newLocalNodeForTesting()
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defer db.Close()
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if ln.Node().ID() != ln.ID() {
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t.Fatal("inconsistent ID")
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}
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ln.Set(enr.WithEntry("x", uint(3)))
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var x uint
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if err := ln.Node().Load(enr.WithEntry("x", &x)); err != nil {
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t.Fatal("can't load entry 'x':", err)
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} else if x != 3 {
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t.Fatal("wrong value for entry 'x':", x)
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}
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}
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func TestLocalNodeSeqPersist(t *testing.T) {
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ln, db := newLocalNodeForTesting()
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defer db.Close()
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if s := ln.Node().Seq(); s != 1 {
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t.Fatalf("wrong initial seq %d, want 1", s)
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}
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ln.Set(enr.WithEntry("x", uint(1)))
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if s := ln.Node().Seq(); s != 2 {
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t.Fatalf("wrong seq %d after set, want 2", s)
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}
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// Create a new instance, it should reload the sequence number.
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// The number increases just after that because a new record is
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// created without the "x" entry.
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ln2 := NewLocalNode(db, ln.key)
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if s := ln2.Node().Seq(); s != 3 {
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t.Fatalf("wrong seq %d on new instance, want 3", s)
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}
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// Create a new instance with a different node key on the same database.
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// This should reset the sequence number.
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key, _ := crypto.GenerateKey()
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ln3 := NewLocalNode(db, key)
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if s := ln3.Node().Seq(); s != 1 {
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t.Fatalf("wrong seq %d on instance with changed key, want 1", s)
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}
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}
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