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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 simulation
import (
"fmt"
"io"
"os"
"sync"
"github.com/dexon-foundation/dexon/log"
"github.com/dexon-foundation/dexon-consensus/common"
"github.com/dexon-foundation/dexon-consensus/core/crypto/ecdsa"
"github.com/dexon-foundation/dexon-consensus/core/test"
"github.com/dexon-foundation/dexon-consensus/simulation/config"
)
// Run starts the simulation.
func Run(cfg *config.Config, logPrefix string) {
var (
networkType = cfg.Networking.Type
server *PeerServer
wg sync.WaitGroup
err error
)
if cfg.Node.Consensus.NotarySetSize > cfg.Node.Num {
panic(fmt.Errorf("NotarySetSize should not be larger the node num"))
}
if cfg.Node.Consensus.DKGSetSize > cfg.Node.Num {
panic(fmt.Errorf("DKGSetSze should not be larger the node num"))
}
newLogger := func(logPrefix string) common.Logger {
mw := io.Writer(os.Stderr)
if logPrefix != "" {
f, err := os.Create(logPrefix + ".log")
if err != nil {
panic(err)
}
mw = io.MultiWriter(os.Stderr, f)
}
logger := log.New()
logger.SetHandler(log.StreamHandler(mw, log.TerminalFormat(false)))
return logger
}
// init is a function to init a node.
init := func(serverEndpoint interface{}, logger common.Logger) {
prv, err := ecdsa.NewPrivateKey()
if err != nil {
panic(err)
}
v := newNode(prv, logger, *cfg)
wg.Add(1)
go func() {
defer wg.Done()
v.run(serverEndpoint)
}()
}
switch networkType {
case test.NetworkTypeTCP:
// Intialized a simulation on multiple remotely peers.
// The peer-server would be initialized with another command.
init(nil, newLogger(logPrefix))
case test.NetworkTypeTCPLocal, test.NetworkTypeFake:
// Initialize a local simulation with a peer server.
var serverEndpoint interface{}
server = NewPeerServer()
if serverEndpoint, err = server.Setup(cfg); err != nil {
panic(err)
}
wg.Add(1)
go func() {
defer wg.Done()
server.Run()
}()
// Initialize all nodes.
for i := uint32(0); i < cfg.Node.Num; i++ {
prefix := fmt.Sprintf("%s.%d", logPrefix, i)
if logPrefix == "" {
prefix = ""
}
init(serverEndpoint, newLogger(prefix))
}
}
wg.Wait()
// Do not exit when we are in TCP node, since k8s will restart the pod and
// cause confusions.
if networkType == test.NetworkTypeTCP {
select {}
}
}
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