neoneo-go/cli/server/server.go
Anna Shaleva 7028930bd6 network: do not use error channel to start network srv
It's obsolete thing, we have looger and it perfectly suits our needs.

Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
2023-08-01 17:22:01 +03:00

686 lines
20 KiB
Go

package server
import (
"context"
"errors"
"fmt"
"os"
"os/signal"
"syscall"
"time"
"github.com/nspcc-dev/neo-go/cli/cmdargs"
"github.com/nspcc-dev/neo-go/cli/options"
"github.com/nspcc-dev/neo-go/pkg/config"
"github.com/nspcc-dev/neo-go/pkg/config/netmode"
"github.com/nspcc-dev/neo-go/pkg/consensus"
"github.com/nspcc-dev/neo-go/pkg/core"
"github.com/nspcc-dev/neo-go/pkg/core/block"
"github.com/nspcc-dev/neo-go/pkg/core/chaindump"
corestate "github.com/nspcc-dev/neo-go/pkg/core/stateroot"
"github.com/nspcc-dev/neo-go/pkg/core/storage"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/nspcc-dev/neo-go/pkg/network"
"github.com/nspcc-dev/neo-go/pkg/services/metrics"
"github.com/nspcc-dev/neo-go/pkg/services/notary"
"github.com/nspcc-dev/neo-go/pkg/services/oracle"
"github.com/nspcc-dev/neo-go/pkg/services/rpcsrv"
"github.com/nspcc-dev/neo-go/pkg/services/stateroot"
"github.com/urfave/cli"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
)
// NewCommands returns 'node' command.
func NewCommands() []cli.Command {
cfgFlags := []cli.Flag{options.Config}
cfgFlags = append(cfgFlags, options.Network...)
var cfgWithCountFlags = make([]cli.Flag, len(cfgFlags))
copy(cfgWithCountFlags, cfgFlags)
cfgFlags = append(cfgFlags, options.Debug)
cfgWithCountFlags = append(cfgWithCountFlags,
cli.UintFlag{
Name: "count, c",
Usage: "number of blocks to be processed (default or 0: all chain)",
},
)
var cfgCountOutFlags = make([]cli.Flag, len(cfgWithCountFlags))
copy(cfgCountOutFlags, cfgWithCountFlags)
cfgCountOutFlags = append(cfgCountOutFlags,
cli.UintFlag{
Name: "start, s",
Usage: "block number to start from (default: 0)",
},
cli.StringFlag{
Name: "out, o",
Usage: "Output file (stdout if not given)",
},
)
var cfgCountInFlags = make([]cli.Flag, len(cfgWithCountFlags))
copy(cfgCountInFlags, cfgWithCountFlags)
cfgCountInFlags = append(cfgCountInFlags,
cli.StringFlag{
Name: "in, i",
Usage: "Input file (stdin if not given)",
},
cli.StringFlag{
Name: "dump",
Usage: "directory for storing JSON dumps",
},
cli.BoolFlag{
Name: "incremental, n",
Usage: "use if dump is incremental",
},
)
var cfgHeightFlags = make([]cli.Flag, len(cfgFlags)+1)
copy(cfgHeightFlags, cfgFlags)
cfgHeightFlags[len(cfgHeightFlags)-1] = cli.UintFlag{
Name: "height",
Usage: "Height of the state to reset DB to",
Required: true,
}
return []cli.Command{
{
Name: "node",
Usage: "start a NeoGo node",
UsageText: "neo-go node [--config-path path] [-d] [-p/-m/-t]",
Action: startServer,
Flags: cfgFlags,
},
{
Name: "db",
Usage: "database manipulations",
Subcommands: []cli.Command{
{
Name: "dump",
Usage: "dump blocks (starting with block #1) to the file",
UsageText: "neo-go db dump -o file [-s start] [-c count] [--config-path path] [-p/-m/-t]",
Action: dumpDB,
Flags: cfgCountOutFlags,
},
{
Name: "restore",
Usage: "restore blocks from the file",
UsageText: "neo-go db restore -i file [--dump] [-n] [-c count] [--config-path path] [-p/-m/-t]",
Action: restoreDB,
Flags: cfgCountInFlags,
},
{
Name: "reset",
Usage: "reset database to the previous state",
UsageText: "neo-go db reset --height height [--config-path path] [-p/-m/-t]",
Action: resetDB,
Flags: cfgHeightFlags,
},
},
},
}
}
func newGraceContext() context.Context {
ctx, cancel := context.WithCancel(context.Background())
stop := make(chan os.Signal, 1)
signal.Notify(stop, os.Interrupt)
signal.Notify(stop, syscall.SIGTERM)
go func() {
<-stop
cancel()
}()
return ctx
}
func initBCWithMetrics(cfg config.Config, log *zap.Logger) (*core.Blockchain, *metrics.Service, *metrics.Service, error) {
chain, _, err := initBlockChain(cfg, log)
if err != nil {
return nil, nil, nil, cli.NewExitError(err, 1)
}
configureAddresses(&cfg.ApplicationConfiguration)
prometheus := metrics.NewPrometheusService(cfg.ApplicationConfiguration.Prometheus, log)
pprof := metrics.NewPprofService(cfg.ApplicationConfiguration.Pprof, log)
go chain.Run()
err = prometheus.Start()
if err != nil {
return nil, nil, nil, cli.NewExitError(fmt.Errorf("failed to start Prometheus service: %w", err), 1)
}
err = pprof.Start()
if err != nil {
return nil, nil, nil, cli.NewExitError(fmt.Errorf("failed to start Pprof service: %w", err), 1)
}
return chain, prometheus, pprof, nil
}
func dumpDB(ctx *cli.Context) error {
if err := cmdargs.EnsureNone(ctx); err != nil {
return err
}
cfg, err := options.GetConfigFromContext(ctx)
if err != nil {
return cli.NewExitError(err, 1)
}
log, _, logCloser, err := options.HandleLoggingParams(ctx.Bool("debug"), cfg.ApplicationConfiguration)
if err != nil {
return cli.NewExitError(err, 1)
}
if logCloser != nil {
defer func() { _ = logCloser() }()
}
count := uint32(ctx.Uint("count"))
start := uint32(ctx.Uint("start"))
var outStream = os.Stdout
if out := ctx.String("out"); out != "" {
outStream, err = os.Create(out)
if err != nil {
return cli.NewExitError(err, 1)
}
}
defer outStream.Close()
writer := io.NewBinWriterFromIO(outStream)
chain, prometheus, pprof, err := initBCWithMetrics(cfg, log)
if err != nil {
return err
}
defer func() {
pprof.ShutDown()
prometheus.ShutDown()
chain.Close()
}()
chainCount := chain.BlockHeight() + 1
if start+count > chainCount {
return cli.NewExitError(fmt.Errorf("chain is not that high (%d) to dump %d blocks starting from %d", chainCount-1, count, start), 1)
}
if count == 0 {
count = chainCount - start
}
writer.WriteU32LE(count)
err = chaindump.Dump(chain, writer, start, count)
if err != nil {
return cli.NewExitError(err.Error(), 1)
}
return nil
}
func restoreDB(ctx *cli.Context) error {
if err := cmdargs.EnsureNone(ctx); err != nil {
return err
}
cfg, err := options.GetConfigFromContext(ctx)
if err != nil {
return err
}
log, _, logCloser, err := options.HandleLoggingParams(ctx.Bool("debug"), cfg.ApplicationConfiguration)
if err != nil {
return cli.NewExitError(err, 1)
}
if logCloser != nil {
defer func() { _ = logCloser() }()
}
count := uint32(ctx.Uint("count"))
var inStream = os.Stdin
if in := ctx.String("in"); in != "" {
inStream, err = os.Open(in)
if err != nil {
return cli.NewExitError(err, 1)
}
}
defer inStream.Close()
reader := io.NewBinReaderFromIO(inStream)
dumpDir := ctx.String("dump")
if dumpDir != "" {
cfg.ApplicationConfiguration.SaveStorageBatch = true
}
chain, prometheus, pprof, err := initBCWithMetrics(cfg, log)
if err != nil {
return err
}
defer func() {
pprof.ShutDown()
prometheus.ShutDown()
chain.Close()
}()
var start uint32
if ctx.Bool("incremental") {
start = reader.ReadU32LE()
if chain.BlockHeight()+1 < start {
return cli.NewExitError(fmt.Errorf("expected height: %d, dump starts at %d",
chain.BlockHeight()+1, start), 1)
}
}
var skip uint32
if chain.BlockHeight() != 0 {
skip = chain.BlockHeight() + 1 - start
}
var allBlocks = reader.ReadU32LE()
if reader.Err != nil {
return cli.NewExitError(err, 1)
}
if skip+count > allBlocks {
return cli.NewExitError(fmt.Errorf("input file has only %d blocks, can't read %d starting from %d", allBlocks, count, skip), 1)
}
if count == 0 {
count = allBlocks - skip
}
log.Info("initialize restore",
zap.Uint32("start", start),
zap.Uint32("height", chain.BlockHeight()),
zap.Uint32("skip", skip),
zap.Uint32("count", count))
gctx := newGraceContext()
var lastIndex uint32
dump := newDump()
defer func() {
_ = dump.tryPersist(dumpDir, lastIndex)
}()
var f = func(b *block.Block) error {
select {
case <-gctx.Done():
return gctx.Err()
default:
return nil
}
}
if dumpDir != "" {
f = func(b *block.Block) error {
select {
case <-gctx.Done():
return gctx.Err()
default:
}
batch := chain.LastBatch()
// The genesis block may already be persisted, so LastBatch() will return nil.
if batch == nil && b.Index == 0 {
return nil
}
dump.add(b.Index, batch)
lastIndex = b.Index
if b.Index%1000 == 0 {
if err := dump.tryPersist(dumpDir, b.Index); err != nil {
return fmt.Errorf("can't dump storage to file: %w", err)
}
}
return nil
}
}
err = chaindump.Restore(chain, reader, skip, count, f)
if err != nil {
return cli.NewExitError(err, 1)
}
return nil
}
func resetDB(ctx *cli.Context) error {
if err := cmdargs.EnsureNone(ctx); err != nil {
return err
}
cfg, err := options.GetConfigFromContext(ctx)
if err != nil {
return cli.NewExitError(err, 1)
}
h := uint32(ctx.Uint("height"))
log, _, logCloser, err := options.HandleLoggingParams(ctx.Bool("debug"), cfg.ApplicationConfiguration)
if err != nil {
return cli.NewExitError(err, 1)
}
if logCloser != nil {
defer func() { _ = logCloser() }()
}
chain, store, err := initBlockChain(cfg, log)
if err != nil {
return cli.NewExitError(fmt.Errorf("failed to create Blockchain instance: %w", err), 1)
}
err = chain.Reset(h)
if err != nil {
return cli.NewExitError(fmt.Errorf("failed to reset chain state to height %d: %w", h, err), 1)
}
err = store.Close()
if err != nil {
return cli.NewExitError(fmt.Errorf("failed to close the DB: %w", err), 1)
}
return nil
}
func mkOracle(config config.OracleConfiguration, magic netmode.Magic, chain *core.Blockchain, serv *network.Server, log *zap.Logger) (*oracle.Oracle, error) {
if !config.Enabled {
return nil, nil
}
orcCfg := oracle.Config{
Log: log,
Network: magic,
MainCfg: config,
Chain: chain,
OnTransaction: serv.RelayTxn,
}
orc, err := oracle.NewOracle(orcCfg)
if err != nil {
return nil, fmt.Errorf("can't initialize Oracle module: %w", err)
}
chain.SetOracle(orc)
serv.AddService(orc)
return orc, nil
}
func mkConsensus(config config.Consensus, tpb time.Duration, chain *core.Blockchain, serv *network.Server, log *zap.Logger) (consensus.Service, error) {
if !config.Enabled {
return nil, nil
}
srv, err := consensus.NewService(consensus.Config{
Logger: log,
Broadcast: serv.BroadcastExtensible,
Chain: chain,
BlockQueue: serv.GetBlockQueue(),
ProtocolConfiguration: chain.GetConfig().ProtocolConfiguration,
RequestTx: serv.RequestTx,
StopTxFlow: serv.StopTxFlow,
Wallet: config.UnlockWallet,
TimePerBlock: tpb,
})
if err != nil {
return nil, fmt.Errorf("can't initialize Consensus module: %w", err)
}
serv.AddConsensusService(srv, srv.OnPayload, srv.OnTransaction)
return srv, nil
}
func mkP2PNotary(config config.P2PNotary, chain *core.Blockchain, serv *network.Server, log *zap.Logger) (*notary.Notary, error) {
if !config.Enabled {
return nil, nil
}
if !chain.P2PSigExtensionsEnabled() {
return nil, errors.New("P2PSigExtensions are disabled, but Notary service is enabled")
}
cfg := notary.Config{
MainCfg: config,
Chain: chain,
Log: log,
}
n, err := notary.NewNotary(cfg, serv.Net, serv.GetNotaryPool(), func(tx *transaction.Transaction) error {
err := serv.RelayTxn(tx)
if err != nil && !errors.Is(err, core.ErrAlreadyExists) {
return fmt.Errorf("can't relay completed notary transaction: hash %s, error: %w", tx.Hash().StringLE(), err)
}
return nil
})
if err != nil {
return nil, fmt.Errorf("failed to create Notary module: %w", err)
}
serv.AddService(n)
chain.SetNotary(n)
return n, nil
}
func startServer(ctx *cli.Context) error {
if err := cmdargs.EnsureNone(ctx); err != nil {
return err
}
cfg, err := options.GetConfigFromContext(ctx)
if err != nil {
return cli.NewExitError(err, 1)
}
var logDebug = ctx.Bool("debug")
log, logLevel, logCloser, err := options.HandleLoggingParams(logDebug, cfg.ApplicationConfiguration)
if err != nil {
return cli.NewExitError(err, 1)
}
if logCloser != nil {
defer func() { _ = logCloser() }()
}
grace, cancel := context.WithCancel(newGraceContext())
defer cancel()
serverConfig, err := network.NewServerConfig(cfg)
if err != nil {
return cli.NewExitError(err, 1)
}
chain, prometheus, pprof, err := initBCWithMetrics(cfg, log)
if err != nil {
return cli.NewExitError(err, 1)
}
defer func() {
pprof.ShutDown()
prometheus.ShutDown()
chain.Close()
}()
serv, err := network.NewServer(serverConfig, chain, chain.GetStateSyncModule(), log)
if err != nil {
return cli.NewExitError(fmt.Errorf("failed to create network server: %w", err), 1)
}
srMod := chain.GetStateModule().(*corestate.Module) // Take full responsibility here.
sr, err := stateroot.New(serverConfig.StateRootCfg, srMod, log, chain, serv.BroadcastExtensible)
if err != nil {
return cli.NewExitError(fmt.Errorf("can't initialize StateRoot service: %w", err), 1)
}
serv.AddExtensibleService(sr, stateroot.Category, sr.OnPayload)
oracleSrv, err := mkOracle(cfg.ApplicationConfiguration.Oracle, cfg.ProtocolConfiguration.Magic, chain, serv, log)
if err != nil {
return cli.NewExitError(err, 1)
}
dbftSrv, err := mkConsensus(cfg.ApplicationConfiguration.Consensus, serverConfig.TimePerBlock, chain, serv, log)
if err != nil {
return cli.NewExitError(err, 1)
}
p2pNotary, err := mkP2PNotary(cfg.ApplicationConfiguration.P2PNotary, chain, serv, log)
if err != nil {
return cli.NewExitError(err, 1)
}
errChan := make(chan error)
rpcServer := rpcsrv.New(chain, cfg.ApplicationConfiguration.RPC, serv, oracleSrv, log, errChan)
serv.AddService(&rpcServer)
go serv.Start()
if !cfg.ApplicationConfiguration.RPC.StartWhenSynchronized {
rpcServer.Start()
}
sigCh := make(chan os.Signal, 1)
signal.Notify(sigCh, sighup)
signal.Notify(sigCh, sigusr1)
signal.Notify(sigCh, sigusr2)
fmt.Fprintln(ctx.App.Writer, Logo())
fmt.Fprintln(ctx.App.Writer, serv.UserAgent)
fmt.Fprintln(ctx.App.Writer)
var shutdownErr error
Main:
for {
select {
case err := <-errChan:
shutdownErr = fmt.Errorf("server error: %w", err)
cancel()
case sig := <-sigCh:
var newLogLevel = zapcore.InvalidLevel
log.Info("signal received", zap.Stringer("name", sig))
cfgnew, err := options.GetConfigFromContext(ctx)
if err != nil {
log.Warn("can't reread the config file, signal ignored", zap.Error(err))
break // Continue working.
}
if !cfg.ProtocolConfiguration.Equals(&cfgnew.ProtocolConfiguration) {
log.Warn("ProtocolConfiguration changed, signal ignored")
break // Continue working.
}
if !cfg.ApplicationConfiguration.EqualsButServices(&cfgnew.ApplicationConfiguration) {
log.Warn("ApplicationConfiguration changed in incompatible way, signal ignored")
break // Continue working.
}
if !logDebug && cfgnew.ApplicationConfiguration.LogLevel != cfg.ApplicationConfiguration.LogLevel {
newLogLevel, err = zapcore.ParseLevel(cfgnew.ApplicationConfiguration.LogLevel)
if err != nil {
log.Warn("wrong LogLevel in ApplicationConfiguration, signal ignored", zap.Error(err))
break // Continue working.
}
}
configureAddresses(&cfgnew.ApplicationConfiguration)
switch sig {
case sighup:
if newLogLevel != zapcore.InvalidLevel {
logLevel.SetLevel(newLogLevel)
log.Warn("using new logging level", zap.Stringer("level", newLogLevel))
}
serv.DelService(&rpcServer)
rpcServer.Shutdown()
rpcServer = rpcsrv.New(chain, cfgnew.ApplicationConfiguration.RPC, serv, oracleSrv, log, errChan)
serv.AddService(&rpcServer)
if !cfgnew.ApplicationConfiguration.RPC.StartWhenSynchronized || serv.IsInSync() {
rpcServer.Start()
}
pprof.ShutDown()
pprof = metrics.NewPprofService(cfgnew.ApplicationConfiguration.Pprof, log)
err = pprof.Start()
if err != nil {
shutdownErr = fmt.Errorf("failed to start Pprof service: %w", err)
cancel() // Fatal error, like for RPC server.
}
prometheus.ShutDown()
prometheus = metrics.NewPrometheusService(cfgnew.ApplicationConfiguration.Prometheus, log)
err = prometheus.Start()
if err != nil {
shutdownErr = fmt.Errorf("failed to start Prometheus service: %w", err)
cancel() // Fatal error, like for RPC server.
}
case sigusr1:
if oracleSrv != nil {
serv.DelService(oracleSrv)
chain.SetOracle(nil)
rpcServer.SetOracleHandler(nil)
oracleSrv.Shutdown()
}
oracleSrv, err = mkOracle(cfgnew.ApplicationConfiguration.Oracle, cfgnew.ProtocolConfiguration.Magic, chain, serv, log)
if err != nil {
log.Error("failed to create oracle service", zap.Error(err))
break // Keep going.
}
if oracleSrv != nil {
rpcServer.SetOracleHandler(oracleSrv)
if serv.IsInSync() {
oracleSrv.Start()
}
}
if p2pNotary != nil {
serv.DelService(p2pNotary)
chain.SetNotary(nil)
p2pNotary.Shutdown()
}
p2pNotary, err = mkP2PNotary(cfgnew.ApplicationConfiguration.P2PNotary, chain, serv, log)
if err != nil {
log.Error("failed to create notary service", zap.Error(err))
break // Keep going.
}
if p2pNotary != nil && serv.IsInSync() {
p2pNotary.Start()
}
serv.DelExtensibleService(sr, stateroot.Category)
srMod.SetUpdateValidatorsCallback(nil)
sr.Shutdown()
sr, err = stateroot.New(cfgnew.ApplicationConfiguration.StateRoot, srMod, log, chain, serv.BroadcastExtensible)
if err != nil {
log.Error("failed to create state validation service", zap.Error(err))
break // The show must go on.
}
serv.AddExtensibleService(sr, stateroot.Category, sr.OnPayload)
if serv.IsInSync() {
sr.Start()
}
case sigusr2:
if dbftSrv != nil {
serv.DelConsensusService(dbftSrv)
dbftSrv.Shutdown()
}
dbftSrv, err = mkConsensus(cfgnew.ApplicationConfiguration.Consensus, serverConfig.TimePerBlock, chain, serv, log)
if err != nil {
log.Error("failed to create consensus service", zap.Error(err))
break // Whatever happens, I'll leave it all to chance.
}
if dbftSrv != nil && serv.IsInSync() {
dbftSrv.Start()
}
}
cfg = cfgnew
case <-grace.Done():
signal.Stop(sigCh)
serv.Shutdown()
break Main
}
}
if shutdownErr != nil {
return cli.NewExitError(shutdownErr, 1)
}
return nil
}
// configureAddresses sets up addresses for RPC, Prometheus and Pprof depending from the provided config.
// In case RPC or Prometheus or Pprof Address provided each of them will use it.
// In case global Address (of the node) provided and RPC/Prometheus/Pprof don't have configured addresses they will
// use global one. So Node and RPC and Prometheus and Pprof will run on one address.
func configureAddresses(cfg *config.ApplicationConfiguration) {
if cfg.Address != nil && *cfg.Address != "" { //nolint:staticcheck // SA1019: cfg.Address is deprecated
if cfg.RPC.Address == nil || *cfg.RPC.Address == "" { //nolint:staticcheck // SA1019: cfg.RPC.Address is deprecated
cfg.RPC.Address = cfg.Address //nolint:staticcheck // SA1019: cfg.RPC.Address is deprecated
}
if cfg.Prometheus.Address == nil || *cfg.Prometheus.Address == "" { //nolint:staticcheck // SA1019: cfg.Prometheus.Address is deprecated
cfg.Prometheus.Address = cfg.Address //nolint:staticcheck // SA1019: cfg.Prometheus.Address is deprecated
}
if cfg.Pprof.Address == nil || *cfg.Pprof.Address == "" { //nolint:staticcheck // SA1019: cfg.Pprof.Address is deprecated
cfg.Pprof.Address = cfg.Address //nolint:staticcheck // SA1019: cfg.Pprof.Address is deprecated
}
}
}
// initBlockChain initializes BlockChain with preselected DB.
func initBlockChain(cfg config.Config, log *zap.Logger) (*core.Blockchain, storage.Store, error) {
store, err := storage.NewStore(cfg.ApplicationConfiguration.DBConfiguration)
if err != nil {
return nil, nil, cli.NewExitError(fmt.Errorf("could not initialize storage: %w", err), 1)
}
chain, err := core.NewBlockchain(store, cfg.Blockchain(), log)
if err != nil {
errText := "could not initialize blockchain: %w"
errArgs := []interface{}{err}
closeErr := store.Close()
if closeErr != nil {
errText += "; failed to close the DB: %w"
errArgs = append(errArgs, closeErr)
}
return nil, nil, cli.NewExitError(fmt.Errorf(errText, errArgs...), 1)
}
return chain, store, nil
}
// Logo returns NeoGo logo.
func Logo() string {
return `
_ ____________ __________
/ | / / ____/ __ \ / ____/ __ \
/ |/ / __/ / / / /_____/ / __/ / / /
/ /| / /___/ /_/ /_____/ /_/ / /_/ /
/_/ |_/_____/\____/ \____/\____/
`
}