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// Copyright 2018 The dexon-consensus Authors
// This file is part of the dexon-consensus library.
//
// The dexon-consensus library is free software: you can redistribute it
// and/or modify it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
//
// The dexon-consensus library 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 Lesser
// General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the dexon-consensus library. If not, see
// <http://www.gnu.org/licenses/>.
package main
import (
"flag"
"fmt"
"io"
"log"
"math/rand"
"net/http"
_ "net/http/pprof"
"os"
"runtime"
"runtime/pprof"
"time"
"github.com/dexon-foundation/dexon-consensus/simulation"
"github.com/dexon-foundation/dexon-consensus/simulation/config"
)
var initialize = flag.Bool("init", false, "initialize config file")
var configFile = flag.String("config", "", "path to simulation config file")
var cpuprofile = flag.String("cpuprofile", "", "write cpu profile to `file`")
var memprofile = flag.String("memprofile", "", "write memory profile to `file`")
var logfile = flag.String("log", "", "write log to `file`")
func main() {
flag.Parse()
rand.Seed(time.Now().UnixNano())
// Supports runtime pprof monitoring.
go func() {
log.Println(http.ListenAndServe("localhost:6060", nil))
}()
if *configFile == "" {
fmt.Fprintln(os.Stderr, "error: no configuration file specified")
os.Exit(1)
}
if *initialize {
if err := config.GenerateDefault(*configFile); err != nil {
fmt.Fprintf(os.Stderr, "error: %s", err)
os.Exit(1)
}
//os.Exit(0)
}
if *cpuprofile != "" {
f, err := os.Create(*cpuprofile)
if err != nil {
log.Fatal("could not create CPU profile: ", err)
}
if err := pprof.StartCPUProfile(f); err != nil {
log.Fatal("could not start CPU profile: ", err)
}
defer pprof.StopCPUProfile()
}
if *logfile != "" {
f, err := os.Create(*logfile)
if err != nil {
log.Fatal("could not create log file: ", err)
}
mw := io.MultiWriter(os.Stdout, f)
log.SetOutput(mw)
}
cfg, err := config.Read(*configFile)
if err != nil {
panic(err)
}
simulation.Run(cfg)
if *memprofile != "" {
f, err := os.Create(*memprofile)
if err != nil {
log.Fatal("could not create memory profile: ", err)
}
runtime.GC() // get up-to-date statistics
if err := pprof.WriteHeapProfile(f); err != nil {
log.Fatal("could not write memory profile: ", err)
}
f.Close()
}
}
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