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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 component
import (
"context"
"encoding/json"
"fmt"
"os"
"time"
"github.com/algorand/go-algorand/libgoal"
"github.com/algorand/go-algorand/shared/pingpong"
)
// PingPongComponentInstance extends component instance
// supports management of ping pong instances
type PingPongComponentInstance struct {
ci Instance
ctx context.Context
cancelFunc context.CancelFunc
}
func getPingPongConfig(command Command) (config pingpong.PpConfig, err error) {
err = json.Unmarshal([]byte(command.options), &config)
return
}
// Init the PingPong instance
func (componentInstance *PingPongComponentInstance) Init() (err error) {
return
}
// Process the ping pong instance
func (componentInstance *PingPongComponentInstance) Process(command Command) (err error) {
switch command.command {
case "start":
// terminate previous instance
err = componentInstance.Terminate()
if err != nil {
log.Warnf("terminating component instance resulted in error: %v", err)
}
// unmarshal config sent by client
var pingPongConfig pingpong.PpConfig
pingPongConfig, err = getPingPongConfig(command)
if err != nil {
err = fmt.Errorf("error demarshalling ping pong options %s, err: %v", command.options, err)
log.Errorf("%v", err)
} else {
log.Infof("starting Ping Pong with configuration %+v", pingPongConfig)
err = componentInstance.startPingPong(&pingPongConfig)
if err != nil {
err = fmt.Errorf("starting ping pong instance resulted in error: %v", err)
log.Errorf("%v", err)
} else {
log.Infof("ping pong process started")
}
}
break
case "stop":
log.Infof("terminating Ping Pong")
err = componentInstance.Terminate()
if err != nil {
err = fmt.Errorf("terminating ping pong instance resulted in error: %v", err)
log.Errorf("%v", err)
} else {
log.Infof("ping pong process terminated")
}
break
default:
log.Warnf("unsupported pingpong action '%s'", command.command)
}
return
}
// Terminate the ping pong instance
func (componentInstance *PingPongComponentInstance) Terminate() (err error) {
if componentInstance.cancelFunc != nil {
componentInstance.cancelFunc()
componentInstance.cancelFunc = nil
componentInstance.ctx = nil
}
return
}
func (componentInstance *PingPongComponentInstance) startPingPong(cfg *pingpong.PpConfig) (err error) {
// Make a cache dir for wallet handle tokens
cacheDir, err := os.MkdirTemp(GetHostAgent().TempDir, PINGPONG)
if err != nil {
log.Errorf("Cannot make temp dir: %v\n", err)
return
}
ac, err := libgoal.MakeClientWithBinDir(GetHostAgent().BinDir, componentInstance.ci.dataDir, cacheDir, libgoal.FullClient)
if err != nil {
log.Errorf("failed to create lib goal client %v", err)
return
}
// Prepare configuration
if cfg == nil {
cfg = &pingpong.DefaultConfig
}
log.Infof("Preparing to initialize PingPong with config: %+v\n", cfg)
pps := pingpong.NewPingpong(*cfg)
// Initialize accounts if necessary, this may take several attempts while previous transactions to settle
for i := 0; i < 10; i++ {
err = pps.PrepareAccounts(&ac)
if err == nil {
break
} else {
log.Warnf("problem[%d] preparing accounts for transfers: %v\n, retrying", i, err)
time.Sleep(time.Second * 2)
}
}
if err != nil {
log.Errorf("Error preparing accounts for transfers: %v\n", err)
return
}
log.Infof("Preparing to run PingPong with config: %+v\n", cfg)
// prepare cancelable context
componentInstance.ctx, componentInstance.cancelFunc = context.WithCancel(context.Background())
// Kick off the real processing
go pps.RunPingPong(componentInstance.ctx, &ac)
return
}
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