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package main
import (
"context"
"errors"
"fmt"
"net"
"net/http"
"os"
"path/filepath"
"strings"
"time"
"github.com/spf13/viper"
"google.golang.org/grpc"
abciclient "github.com/tendermint/tendermint/abci/client"
"github.com/tendermint/tendermint/abci/server"
"github.com/tendermint/tendermint/config"
"github.com/tendermint/tendermint/crypto/ed25519"
"github.com/tendermint/tendermint/internal/p2p"
"github.com/tendermint/tendermint/libs/log"
tmnet "github.com/tendermint/tendermint/libs/net"
"github.com/tendermint/tendermint/light"
lproxy "github.com/tendermint/tendermint/light/proxy"
lrpc "github.com/tendermint/tendermint/light/rpc"
dbs "github.com/tendermint/tendermint/light/store/db"
"github.com/tendermint/tendermint/node"
"github.com/tendermint/tendermint/privval"
grpcprivval "github.com/tendermint/tendermint/privval/grpc"
privvalproto "github.com/tendermint/tendermint/proto/tendermint/privval"
rpcserver "github.com/tendermint/tendermint/rpc/jsonrpc/server"
"github.com/tendermint/tendermint/test/e2e/app"
e2e "github.com/tendermint/tendermint/test/e2e/pkg"
)
var logger = log.MustNewDefaultLogger(log.LogFormatPlain, log.LogLevelInfo, false)
// main is the binary entrypoint.
func main() {
if len(os.Args) != 2 {
fmt.Printf("Usage: %v <configfile>", os.Args[0])
return
}
configFile := ""
if len(os.Args) == 2 {
configFile = os.Args[1]
}
if err := run(configFile); err != nil {
logger.Error(err.Error())
os.Exit(1)
}
}
// run runs the application - basically like main() with error handling.
func run(configFile string) error {
cfg, err := LoadConfig(configFile)
if err != nil {
return err
}
// Start remote signer (must start before node if running builtin).
if cfg.PrivValServer != "" {
if err = startSigner(cfg); err != nil {
return err
}
if cfg.Protocol == "builtin" {
time.Sleep(1 * time.Second)
}
}
// Start app server.
switch cfg.Protocol {
case "socket", "grpc":
err = startApp(cfg)
case "builtin":
switch cfg.Mode {
case string(e2e.ModeLight):
err = startLightNode(cfg)
case string(e2e.ModeSeed):
err = startSeedNode(cfg)
default:
err = startNode(cfg)
}
default:
err = fmt.Errorf("invalid protocol %q", cfg.Protocol)
}
if err != nil {
return err
}
// Apparently there's no way to wait for the server, so we just sleep
for {
time.Sleep(1 * time.Hour)
}
}
// startApp starts the application server, listening for connections from Tendermint.
func startApp(cfg *Config) error {
app, err := app.NewApplication(cfg.App())
if err != nil {
return err
}
server, err := server.NewServer(cfg.Listen, cfg.Protocol, app)
if err != nil {
return err
}
err = server.Start()
if err != nil {
return err
}
logger.Info(fmt.Sprintf("Server listening on %v (%v protocol)", cfg.Listen, cfg.Protocol))
return nil
}
// startNode starts a Tendermint node running the application directly. It assumes the Tendermint
// configuration is in $TMHOME/config/tendermint.toml.
//
// FIXME There is no way to simply load the configuration from a file, so we need to pull in Viper.
func startNode(cfg *Config) error {
app, err := app.NewApplication(cfg.App())
if err != nil {
return err
}
tmcfg, nodeLogger, err := setupNode()
if err != nil {
return fmt.Errorf("failed to setup config: %w", err)
}
n, err := node.New(tmcfg,
nodeLogger,
abciclient.NewLocalCreator(app),
nil,
)
if err != nil {
return err
}
return n.Start()
}
func startSeedNode(cfg *Config) error {
tmcfg, nodeLogger, err := setupNode()
if err != nil {
return fmt.Errorf("failed to setup config: %w", err)
}
tmcfg.Mode = config.ModeSeed
n, err := node.New(tmcfg, nodeLogger, nil, nil)
if err != nil {
return err
}
return n.Start()
}
func startLightNode(cfg *Config) error {
tmcfg, nodeLogger, err := setupNode()
if err != nil {
return err
}
dbContext := &config.DBContext{ID: "light", Config: tmcfg}
lightDB, err := config.DefaultDBProvider(dbContext)
if err != nil {
return err
}
providers := rpcEndpoints(tmcfg.P2P.PersistentPeers)
c, err := light.NewHTTPClient(
context.Background(),
cfg.ChainID,
light.TrustOptions{
Period: tmcfg.StateSync.TrustPeriod,
Height: tmcfg.StateSync.TrustHeight,
Hash: tmcfg.StateSync.TrustHashBytes(),
},
providers[0],
providers[1:],
dbs.New(lightDB),
light.Logger(nodeLogger),
)
if err != nil {
return err
}
rpccfg := rpcserver.DefaultConfig()
rpccfg.MaxBodyBytes = tmcfg.RPC.MaxBodyBytes
rpccfg.MaxHeaderBytes = tmcfg.RPC.MaxHeaderBytes
rpccfg.MaxOpenConnections = tmcfg.RPC.MaxOpenConnections
// If necessary adjust global WriteTimeout to ensure it's greater than
// TimeoutBroadcastTxCommit.
// See https://github.com/tendermint/tendermint/issues/3435
if rpccfg.WriteTimeout <= tmcfg.RPC.TimeoutBroadcastTxCommit {
rpccfg.WriteTimeout = tmcfg.RPC.TimeoutBroadcastTxCommit + 1*time.Second
}
p, err := lproxy.NewProxy(c, tmcfg.RPC.ListenAddress, providers[0], rpccfg, nodeLogger,
lrpc.KeyPathFn(lrpc.DefaultMerkleKeyPathFn()))
if err != nil {
return err
}
logger.Info("Starting proxy...", "laddr", tmcfg.RPC.ListenAddress)
if err := p.ListenAndServe(); err != http.ErrServerClosed {
// Error starting or closing listener:
logger.Error("proxy ListenAndServe", "err", err)
}
return nil
}
// startSigner starts a signer server connecting to the given endpoint.
func startSigner(cfg *Config) error {
filePV, err := privval.LoadFilePV(cfg.PrivValKey, cfg.PrivValState)
if err != nil {
return err
}
protocol, address := tmnet.ProtocolAndAddress(cfg.PrivValServer)
var dialFn privval.SocketDialer
switch protocol {
case "tcp":
dialFn = privval.DialTCPFn(address, 3*time.Second, ed25519.GenPrivKey())
case "unix":
dialFn = privval.DialUnixFn(address)
case "grpc":
lis, err := net.Listen("tcp", address)
if err != nil {
return err
}
ss := grpcprivval.NewSignerServer(cfg.ChainID, filePV, logger)
s := grpc.NewServer()
privvalproto.RegisterPrivValidatorAPIServer(s, ss)
go func() { // no need to clean up since we remove docker containers
if err := s.Serve(lis); err != nil {
panic(err)
}
}()
return nil
default:
return fmt.Errorf("invalid privval protocol %q", protocol)
}
endpoint := privval.NewSignerDialerEndpoint(logger, dialFn,
privval.SignerDialerEndpointRetryWaitInterval(1*time.Second),
privval.SignerDialerEndpointConnRetries(100))
err = privval.NewSignerServer(endpoint, cfg.ChainID, filePV).Start()
if err != nil {
return err
}
logger.Info(fmt.Sprintf("Remote signer connecting to %v", cfg.PrivValServer))
return nil
}
func setupNode() (*config.Config, log.Logger, error) {
var tmcfg *config.Config
home := os.Getenv("TMHOME")
if home == "" {
return nil, nil, errors.New("TMHOME not set")
}
viper.AddConfigPath(filepath.Join(home, "config"))
viper.SetConfigName("config")
if err := viper.ReadInConfig(); err != nil {
return nil, nil, err
}
tmcfg = config.DefaultConfig()
if err := viper.Unmarshal(tmcfg); err != nil {
return nil, nil, err
}
tmcfg.SetRoot(home)
if err := tmcfg.ValidateBasic(); err != nil {
return nil, nil, fmt.Errorf("error in config file: %w", err)
}
nodeLogger, err := log.NewDefaultLogger(tmcfg.LogFormat, tmcfg.LogLevel, false)
if err != nil {
return nil, nil, err
}
return tmcfg, nodeLogger.With("module", "main"), nil
}
// rpcEndpoints takes a list of persistent peers and splits them into a list of rpc endpoints
// using 26657 as the port number
func rpcEndpoints(peers string) []string {
arr := strings.Split(peers, ",")
endpoints := make([]string, len(arr))
for i, v := range arr {
addr, err := p2p.ParseNodeAddress(v)
if err != nil {
panic(err)
}
// use RPC port instead
addr.Port = 26657
var rpcEndpoint string
// for ipv6 addresses
if strings.Contains(addr.Hostname, ":") {
rpcEndpoint = "http://[" + addr.Hostname + "]:" + fmt.Sprint(addr.Port)
} else { // for ipv4 addresses
rpcEndpoint = "http://" + addr.Hostname + ":" + fmt.Sprint(addr.Port)
}
endpoints[i] = rpcEndpoint
}
return endpoints
}