381 lines
11 KiB
Go
381 lines
11 KiB
Go
// Copyright 2015 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 discv5
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import (
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"bytes"
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"io/ioutil"
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"net"
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"os"
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"path/filepath"
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"reflect"
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"testing"
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"time"
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)
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var nodeDBKeyTests = []struct {
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id NodeID
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field string
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key []byte
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}{
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{
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id: NodeID{},
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field: "version",
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key: []byte{0x76, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e}, // field
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},
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{
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id: MustHexID("0x1dd9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439"),
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field: ":discover",
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key: []byte{0x6e, 0x3a, // prefix
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0x1d, 0xd9, 0xd6, 0x5c, 0x45, 0x52, 0xb5, 0xeb, // node id
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0x43, 0xd5, 0xad, 0x55, 0xa2, 0xee, 0x3f, 0x56, //
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0xc6, 0xcb, 0xc1, 0xc6, 0x4a, 0x5c, 0x8d, 0x65, //
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0x9f, 0x51, 0xfc, 0xd5, 0x1b, 0xac, 0xe2, 0x43, //
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0x51, 0x23, 0x2b, 0x8d, 0x78, 0x21, 0x61, 0x7d, //
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0x2b, 0x29, 0xb5, 0x4b, 0x81, 0xcd, 0xef, 0xb9, //
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0xb3, 0xe9, 0xc3, 0x7d, 0x7f, 0xd5, 0xf6, 0x32, //
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0x70, 0xbc, 0xc9, 0xe1, 0xa6, 0xf6, 0xa4, 0x39, //
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0x3a, 0x64, 0x69, 0x73, 0x63, 0x6f, 0x76, 0x65, 0x72, // field
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},
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},
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}
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func TestNodeDBKeys(t *testing.T) {
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for i, tt := range nodeDBKeyTests {
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if key := makeKey(tt.id, tt.field); !bytes.Equal(key, tt.key) {
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t.Errorf("make test %d: key mismatch: have 0x%x, want 0x%x", i, key, tt.key)
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}
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id, field := splitKey(tt.key)
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if !bytes.Equal(id[:], tt.id[:]) {
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t.Errorf("split test %d: id mismatch: have 0x%x, want 0x%x", i, id, tt.id)
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}
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if field != tt.field {
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t.Errorf("split test %d: field mismatch: have 0x%x, want 0x%x", i, field, tt.field)
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}
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}
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}
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var nodeDBInt64Tests = []struct {
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key []byte
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value int64
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}{
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{key: []byte{0x01}, value: 1},
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{key: []byte{0x02}, value: 2},
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{key: []byte{0x03}, value: 3},
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}
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func TestNodeDBInt64(t *testing.T) {
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db, _ := newNodeDB("", Version, NodeID{})
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defer db.close()
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tests := nodeDBInt64Tests
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for i := 0; i < len(tests); i++ {
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// Insert the next value
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if err := db.storeInt64(tests[i].key, tests[i].value); err != nil {
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t.Errorf("test %d: failed to store value: %v", i, err)
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}
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// Check all existing and non existing values
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for j := 0; j < len(tests); j++ {
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num := db.fetchInt64(tests[j].key)
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switch {
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case j <= i && num != tests[j].value:
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t.Errorf("test %d, item %d: value mismatch: have %v, want %v", i, j, num, tests[j].value)
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case j > i && num != 0:
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t.Errorf("test %d, item %d: value mismatch: have %v, want %v", i, j, num, 0)
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}
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}
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}
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}
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func TestNodeDBFetchStore(t *testing.T) {
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node := NewNode(
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MustHexID("0x1dd9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439"),
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net.IP{192, 168, 0, 1},
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30303,
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30303,
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)
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inst := time.Now()
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num := 314
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db, _ := newNodeDB("", Version, NodeID{})
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defer db.close()
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// Check fetch/store operations on a node ping object
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if stored := db.lastPing(node.ID); stored.Unix() != 0 {
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t.Errorf("ping: non-existing object: %v", stored)
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}
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if err := db.updateLastPing(node.ID, inst); err != nil {
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t.Errorf("ping: failed to update: %v", err)
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}
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if stored := db.lastPing(node.ID); stored.Unix() != inst.Unix() {
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t.Errorf("ping: value mismatch: have %v, want %v", stored, inst)
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}
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// Check fetch/store operations on a node pong object
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if stored := db.lastPong(node.ID); stored.Unix() != 0 {
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t.Errorf("pong: non-existing object: %v", stored)
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}
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if err := db.updateLastPong(node.ID, inst); err != nil {
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t.Errorf("pong: failed to update: %v", err)
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}
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if stored := db.lastPong(node.ID); stored.Unix() != inst.Unix() {
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t.Errorf("pong: value mismatch: have %v, want %v", stored, inst)
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}
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// Check fetch/store operations on a node findnode-failure object
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if stored := db.findFails(node.ID); stored != 0 {
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t.Errorf("find-node fails: non-existing object: %v", stored)
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}
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if err := db.updateFindFails(node.ID, num); err != nil {
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t.Errorf("find-node fails: failed to update: %v", err)
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}
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if stored := db.findFails(node.ID); stored != num {
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t.Errorf("find-node fails: value mismatch: have %v, want %v", stored, num)
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}
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// Check fetch/store operations on an actual node object
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if stored := db.node(node.ID); stored != nil {
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t.Errorf("node: non-existing object: %v", stored)
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}
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if err := db.updateNode(node); err != nil {
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t.Errorf("node: failed to update: %v", err)
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}
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if stored := db.node(node.ID); stored == nil {
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t.Errorf("node: not found")
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} else if !reflect.DeepEqual(stored, node) {
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t.Errorf("node: data mismatch: have %v, want %v", stored, node)
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}
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}
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var nodeDBSeedQueryNodes = []struct {
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node *Node
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pong time.Time
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}{
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// This one should not be in the result set because its last
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// pong time is too far in the past.
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{
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node: NewNode(
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MustHexID("0x84d9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439"),
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net.IP{127, 0, 0, 3},
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30303,
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30303,
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),
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pong: time.Now().Add(-3 * time.Hour),
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},
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// This one shouldn't be in in the result set because its
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// nodeID is the local node's ID.
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{
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node: NewNode(
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MustHexID("0x57d9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439"),
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net.IP{127, 0, 0, 3},
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30303,
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30303,
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),
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pong: time.Now().Add(-4 * time.Second),
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},
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// These should be in the result set.
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{
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node: NewNode(
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MustHexID("0x22d9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439"),
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net.IP{127, 0, 0, 1},
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30303,
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30303,
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),
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pong: time.Now().Add(-2 * time.Second),
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},
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{
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node: NewNode(
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MustHexID("0x44d9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439"),
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net.IP{127, 0, 0, 2},
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30303,
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30303,
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),
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pong: time.Now().Add(-3 * time.Second),
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},
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{
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node: NewNode(
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MustHexID("0xe2d9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439"),
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net.IP{127, 0, 0, 3},
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30303,
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30303,
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),
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pong: time.Now().Add(-1 * time.Second),
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},
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}
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func TestNodeDBSeedQuery(t *testing.T) {
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db, _ := newNodeDB("", Version, nodeDBSeedQueryNodes[1].node.ID)
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defer db.close()
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// Insert a batch of nodes for querying
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for i, seed := range nodeDBSeedQueryNodes {
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if err := db.updateNode(seed.node); err != nil {
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t.Fatalf("node %d: failed to insert: %v", i, err)
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}
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if err := db.updateLastPong(seed.node.ID, seed.pong); err != nil {
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t.Fatalf("node %d: failed to insert lastPong: %v", i, err)
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}
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}
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// Retrieve the entire batch and check for duplicates
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seeds := db.querySeeds(len(nodeDBSeedQueryNodes)*2, time.Hour)
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have := make(map[NodeID]struct{})
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for _, seed := range seeds {
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have[seed.ID] = struct{}{}
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}
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want := make(map[NodeID]struct{})
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for _, seed := range nodeDBSeedQueryNodes[2:] {
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want[seed.node.ID] = struct{}{}
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}
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if len(seeds) != len(want) {
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t.Errorf("seed count mismatch: have %v, want %v", len(seeds), len(want))
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}
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for id := range have {
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if _, ok := want[id]; !ok {
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t.Errorf("extra seed: %v", id)
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}
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}
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for id := range want {
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if _, ok := have[id]; !ok {
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t.Errorf("missing seed: %v", id)
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}
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}
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}
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func TestNodeDBPersistency(t *testing.T) {
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root, err := ioutil.TempDir("", "nodedb-")
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if err != nil {
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t.Fatalf("failed to create temporary data folder: %v", err)
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}
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defer os.RemoveAll(root)
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var (
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testKey = []byte("somekey")
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testInt = int64(314)
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)
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// Create a persistent database and store some values
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db, err := newNodeDB(filepath.Join(root, "database"), Version, NodeID{})
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if err != nil {
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t.Fatalf("failed to create persistent database: %v", err)
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}
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if err := db.storeInt64(testKey, testInt); err != nil {
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t.Fatalf("failed to store value: %v.", err)
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}
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db.close()
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// Reopen the database and check the value
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db, err = newNodeDB(filepath.Join(root, "database"), Version, NodeID{})
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if err != nil {
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t.Fatalf("failed to open persistent database: %v", err)
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}
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if val := db.fetchInt64(testKey); val != testInt {
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t.Fatalf("value mismatch: have %v, want %v", val, testInt)
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}
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db.close()
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// Change the database version and check flush
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db, err = newNodeDB(filepath.Join(root, "database"), Version+1, NodeID{})
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if err != nil {
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t.Fatalf("failed to open persistent database: %v", err)
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}
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if val := db.fetchInt64(testKey); val != 0 {
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t.Fatalf("value mismatch: have %v, want %v", val, 0)
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}
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db.close()
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}
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var nodeDBExpirationNodes = []struct {
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node *Node
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pong time.Time
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exp bool
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}{
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{
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node: NewNode(
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MustHexID("0x01d9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439"),
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net.IP{127, 0, 0, 1},
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30303,
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30303,
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),
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pong: time.Now().Add(-nodeDBNodeExpiration + time.Minute),
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exp: false,
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}, {
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node: NewNode(
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MustHexID("0x02d9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439"),
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net.IP{127, 0, 0, 2},
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30303,
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30303,
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),
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pong: time.Now().Add(-nodeDBNodeExpiration - time.Minute),
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exp: true,
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},
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}
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func TestNodeDBExpiration(t *testing.T) {
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db, _ := newNodeDB("", Version, NodeID{})
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defer db.close()
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// Add all the test nodes and set their last pong time
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for i, seed := range nodeDBExpirationNodes {
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if err := db.updateNode(seed.node); err != nil {
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t.Fatalf("node %d: failed to insert: %v", i, err)
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}
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if err := db.updateLastPong(seed.node.ID, seed.pong); err != nil {
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t.Fatalf("node %d: failed to update pong: %v", i, err)
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}
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}
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// Expire some of them, and check the rest
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if err := db.expireNodes(); err != nil {
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t.Fatalf("failed to expire nodes: %v", err)
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}
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for i, seed := range nodeDBExpirationNodes {
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node := db.node(seed.node.ID)
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if (node == nil && !seed.exp) || (node != nil && seed.exp) {
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t.Errorf("node %d: expiration mismatch: have %v, want %v", i, node, seed.exp)
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}
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}
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}
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func TestNodeDBSelfExpiration(t *testing.T) {
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// Find a node in the tests that shouldn't expire, and assign it as self
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var self NodeID
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for _, node := range nodeDBExpirationNodes {
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if !node.exp {
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self = node.node.ID
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break
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}
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}
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db, _ := newNodeDB("", Version, self)
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defer db.close()
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// Add all the test nodes and set their last pong time
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for i, seed := range nodeDBExpirationNodes {
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if err := db.updateNode(seed.node); err != nil {
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t.Fatalf("node %d: failed to insert: %v", i, err)
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}
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if err := db.updateLastPong(seed.node.ID, seed.pong); err != nil {
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t.Fatalf("node %d: failed to update pong: %v", i, err)
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}
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}
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// Expire the nodes and make sure self has been evacuated too
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if err := db.expireNodes(); err != nil {
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t.Fatalf("failed to expire nodes: %v", err)
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}
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node := db.node(self)
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if node != nil {
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t.Errorf("self not evacuated")
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}
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}
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