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// Copyright (C) 2019-2024 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"
"fmt"
"github.com/algorand/go-algorand/protocol"
)
type CatchupFilterConfig struct {
Nodes []int
Count int
}
type CatchupFilter struct {
NetworkFilter
upstream UpstreamFilter
downstream DownstreamFilter
fuzzer *Fuzzer
nodeID int
count int
enabled bool
debugMessage bool
NetworkFilterFactory
config *CatchupFilterConfig
}
func (n *CatchupFilter) SendMessage(sourceNode, targetNode int, tag protocol.Tag, data []byte) {
n.downstream.SendMessage(sourceNode, targetNode, tag, data)
}
func (n *CatchupFilter) GetDownstreamFilter() DownstreamFilter {
return n.downstream
}
func (n *CatchupFilter) ReceiveMessage(sourceNode int, tag protocol.Tag, data []byte) {
n.upstream.ReceiveMessage(sourceNode, tag, data)
}
func (n *CatchupFilter) SetDownstreamFilter(f DownstreamFilter) {
n.downstream = f
}
func (n *CatchupFilter) SetUpstreamFilter(f UpstreamFilter) {
n.upstream = f
}
func (n *CatchupFilter) CreateFilter(nodeID int, fuzzer *Fuzzer) NetworkFilter {
f := &CatchupFilter{
nodeID: nodeID,
fuzzer: fuzzer,
config: n.config,
debugMessage: false,
}
for _, i := range n.config.Nodes {
if i == nodeID {
f.enabled = true
}
}
return f
}
func (n *CatchupFilter) Tick(newClockTime int) bool {
changed := n.upstream.Tick(newClockTime)
if !n.enabled {
return changed
}
currentLedgerRound := n.fuzzer.ledgers[n.nodeID].NextRound()
if n.debugMessage {
fmt.Printf("Node %d catching up on clock %d\n", n.nodeID, newClockTime)
}
n.fuzzer.StartCatchingUp(n.nodeID)
caughtUpLedgerRound := n.fuzzer.ledgers[n.nodeID].NextRound()
if n.debugMessage {
fmt.Printf("Node %d caught up from round %d to round %d\n", n.nodeID, currentLedgerRound, caughtUpLedgerRound)
}
n.count++
if n.count >= n.config.Count {
n.enabled = false
}
return true
}
func MakeCatchupFilterFactory(config *CatchupFilterConfig) *CatchupFilter {
return &CatchupFilter{
config: config,
}
}
// Unmarshall CatchupFilter
func (n *CatchupFilter) Unmarshal(b []byte) NetworkFilterFactory {
type catchupFilterJSON struct {
Name string
CatchupFilterConfig
}
var jsonConfig catchupFilterJSON
if err := json.Unmarshal(b, &jsonConfig); err != nil {
return nil
}
if jsonConfig.Name != "CatchupFilter" {
return nil
}
return &CatchupFilter{
config: &jsonConfig.CatchupFilterConfig,
}
}
// register CatchupFilter
func init() {
registeredFilterFactories = append(registeredFilterFactories, &CatchupFilter{})
}
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