1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
// Copyright (C) 2019-2023 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package fuzzer
import (
"encoding/json"
"github.com/algorand/go-algorand/protocol"
)
type TopologyFilterConfig struct {
NodesConnection map[int][]int // map each node to a list of other nodes to which it's connected.
}
type TopologyFilter struct {
NetworkFilter
NetworkFilterFactory
upstream UpstreamFilter
downstream DownstreamFilter
config *TopologyFilterConfig
nodeConnections map[int]bool
fuzzer *Fuzzer
nodeID int
}
func (n *TopologyFilter) SendMessage(sourceNode, targetNode int, tag protocol.Tag, data []byte) {
if targetNode < 0 {
if len(n.nodeConnections) == n.fuzzer.nodesCount {
n.downstream.SendMessage(sourceNode, targetNode, tag, data)
return
}
for target := range n.nodeConnections {
if target != n.nodeID {
n.downstream.SendMessage(sourceNode, target, tag, data)
}
}
return
}
if n.nodeConnections[targetNode] {
n.downstream.SendMessage(sourceNode, targetNode, tag, data)
}
}
func (n *TopologyFilter) GetDownstreamFilter() DownstreamFilter {
return n.downstream
}
func (n *TopologyFilter) ReceiveMessage(sourceNode int, tag protocol.Tag, data []byte) {
n.upstream.ReceiveMessage(sourceNode, tag, data)
}
func (n *TopologyFilter) SetDownstreamFilter(f DownstreamFilter) {
n.downstream = f
}
func (n *TopologyFilter) SetUpstreamFilter(f UpstreamFilter) {
n.upstream = f
}
func (n *TopologyFilter) CreateFilter(nodeID int, fuzzer *Fuzzer) NetworkFilter {
filter := &TopologyFilter{
config: n.config,
nodeConnections: make(map[int]bool),
fuzzer: fuzzer,
nodeID: nodeID,
}
// initialize the nodeConnections map.
if conns, has := n.config.NodesConnection[nodeID]; has {
for _, conn := range conns {
filter.nodeConnections[conn] = true
}
}
return filter
}
func (n *TopologyFilter) Tick(newClockTime int) bool {
return n.upstream.Tick(newClockTime)
}
func MakeTopologyFilter(config TopologyFilterConfig) *TopologyFilter {
return &TopologyFilter{
config: &config,
}
}
func (n *TopologyFilter) Unmarshal(b []byte) NetworkFilterFactory {
type topologyFilterJSON struct {
TopologyFilterConfig
Name string
}
var jsonConfig topologyFilterJSON
if json.Unmarshal(b, &jsonConfig) != nil {
return nil
}
if jsonConfig.Name != "TopologyFilter" {
return nil
}
return MakeTopologyFilter(jsonConfig.TopologyFilterConfig)
}
func init() {
registeredFilterFactories = append(registeredFilterFactories, &TopologyFilter{})
}
|
