mirror of
https://github.com/nspcc-dev/neo-go.git
synced 2024-10-16 15:43:25 +00:00
429 lines
11 KiB
Go
429 lines
11 KiB
Go
package server
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import (
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"context"
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"fmt"
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"os"
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"os/signal"
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"syscall"
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"github.com/nspcc-dev/neo-go/cli/options"
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"github.com/nspcc-dev/neo-go/pkg/config"
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"github.com/nspcc-dev/neo-go/pkg/core"
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"github.com/nspcc-dev/neo-go/pkg/core/block"
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"github.com/nspcc-dev/neo-go/pkg/core/chaindump"
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"github.com/nspcc-dev/neo-go/pkg/core/storage"
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"github.com/nspcc-dev/neo-go/pkg/io"
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"github.com/nspcc-dev/neo-go/pkg/network"
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"github.com/nspcc-dev/neo-go/pkg/network/metrics"
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"github.com/nspcc-dev/neo-go/pkg/rpc/server"
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"github.com/urfave/cli"
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"go.uber.org/zap"
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"go.uber.org/zap/zapcore"
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)
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// NewCommands returns 'node' command.
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func NewCommands() []cli.Command {
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var cfgFlags = []cli.Flag{
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cli.StringFlag{Name: "config-path"},
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cli.BoolFlag{Name: "debug, d"},
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}
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cfgFlags = append(cfgFlags, options.Network...)
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var cfgWithCountFlags = make([]cli.Flag, len(cfgFlags))
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copy(cfgWithCountFlags, cfgFlags)
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cfgWithCountFlags = append(cfgWithCountFlags,
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cli.UintFlag{
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Name: "count, c",
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Usage: "number of blocks to be processed (default or 0: all chain)",
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},
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)
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var cfgCountOutFlags = make([]cli.Flag, len(cfgWithCountFlags))
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copy(cfgCountOutFlags, cfgWithCountFlags)
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cfgCountOutFlags = append(cfgCountOutFlags,
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cli.UintFlag{
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Name: "start, s",
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Usage: "block number to start from (default: 0)",
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},
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cli.StringFlag{
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Name: "out, o",
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Usage: "Output file (stdout if not given)",
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},
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)
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var cfgCountInFlags = make([]cli.Flag, len(cfgWithCountFlags))
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copy(cfgCountInFlags, cfgWithCountFlags)
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cfgCountInFlags = append(cfgCountInFlags,
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cli.UintFlag{
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Name: "skip, s",
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Usage: "number of blocks to skip (default: 0)",
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},
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cli.StringFlag{
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Name: "in, i",
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Usage: "Input file (stdin if not given)",
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},
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cli.StringFlag{
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Name: "dump",
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Usage: "directory for storing JSON dumps",
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},
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cli.BoolFlag{
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Name: "incremental, n",
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Usage: "use if dump is incremental",
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},
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)
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return []cli.Command{
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{
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Name: "node",
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Usage: "start a NEO node",
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Action: startServer,
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Flags: cfgFlags,
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},
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{
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Name: "db",
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Usage: "database manipulations",
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Subcommands: []cli.Command{
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{
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Name: "dump",
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Usage: "dump blocks (starting with block #1) to the file",
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Action: dumpDB,
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Flags: cfgCountOutFlags,
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},
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{
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Name: "restore",
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Usage: "restore blocks from the file",
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Action: restoreDB,
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Flags: cfgCountInFlags,
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},
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},
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},
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}
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}
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func newGraceContext() context.Context {
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ctx, cancel := context.WithCancel(context.Background())
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stop := make(chan os.Signal, 1)
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signal.Notify(stop, os.Interrupt)
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go func() {
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<-stop
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cancel()
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}()
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return ctx
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}
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// getConfigFromContext looks at path and mode flags in the given config and
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// returns appropriate config.
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func getConfigFromContext(ctx *cli.Context) (config.Config, error) {
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configPath := "./config"
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if argCp := ctx.String("config-path"); argCp != "" {
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configPath = argCp
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}
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return config.Load(configPath, options.GetNetwork(ctx))
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}
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// handleLoggingParams reads logging parameters.
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// If user selected debug level -- function enables it.
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// If logPath is configured -- function creates dir and file for logging.
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func handleLoggingParams(ctx *cli.Context, cfg config.ApplicationConfiguration) (*zap.Logger, error) {
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level := zapcore.InfoLevel
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if ctx.Bool("debug") {
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level = zapcore.DebugLevel
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}
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cc := zap.NewProductionConfig()
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cc.DisableCaller = true
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cc.DisableStacktrace = true
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cc.EncoderConfig.EncodeDuration = zapcore.StringDurationEncoder
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cc.EncoderConfig.EncodeLevel = zapcore.CapitalLevelEncoder
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cc.EncoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
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cc.Encoding = "console"
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cc.Level = zap.NewAtomicLevelAt(level)
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cc.Sampling = nil
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if logPath := cfg.LogPath; logPath != "" {
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if err := io.MakeDirForFile(logPath, "logger"); err != nil {
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return nil, err
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}
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cc.OutputPaths = []string{logPath}
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}
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return cc.Build()
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}
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func initBCWithMetrics(cfg config.Config, log *zap.Logger) (*core.Blockchain, *metrics.Service, *metrics.Service, error) {
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chain, err := initBlockChain(cfg, log)
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if err != nil {
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return nil, nil, nil, cli.NewExitError(err, 1)
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}
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configureAddresses(&cfg.ApplicationConfiguration)
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prometheus := metrics.NewPrometheusService(cfg.ApplicationConfiguration.Prometheus, log)
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pprof := metrics.NewPprofService(cfg.ApplicationConfiguration.Pprof, log)
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go chain.Run()
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go prometheus.Start()
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go pprof.Start()
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return chain, prometheus, pprof, nil
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}
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func dumpDB(ctx *cli.Context) error {
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cfg, err := getConfigFromContext(ctx)
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if err != nil {
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return cli.NewExitError(err, 1)
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}
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log, err := handleLoggingParams(ctx, cfg.ApplicationConfiguration)
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if err != nil {
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return cli.NewExitError(err, 1)
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}
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count := uint32(ctx.Uint("count"))
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start := uint32(ctx.Uint("start"))
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var outStream = os.Stdout
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if out := ctx.String("out"); out != "" {
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outStream, err = os.Create(out)
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if err != nil {
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return cli.NewExitError(err, 1)
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}
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}
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defer outStream.Close()
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writer := io.NewBinWriterFromIO(outStream)
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chain, prometheus, pprof, err := initBCWithMetrics(cfg, log)
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if err != nil {
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return err
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}
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chainCount := chain.BlockHeight() + 1
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if start+count > chainCount {
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return cli.NewExitError(fmt.Errorf("chain is not that high (%d) to dump %d blocks starting from %d", chainCount-1, count, start), 1)
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}
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if count == 0 {
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count = chainCount - start
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}
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writer.WriteU32LE(count)
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err = chaindump.Dump(chain, writer, start, count)
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if err != nil {
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return cli.NewExitError(err.Error(), 1)
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}
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pprof.ShutDown()
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prometheus.ShutDown()
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chain.Close()
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return nil
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}
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func restoreDB(ctx *cli.Context) error {
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cfg, err := getConfigFromContext(ctx)
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if err != nil {
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return err
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}
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log, err := handleLoggingParams(ctx, cfg.ApplicationConfiguration)
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if err != nil {
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return cli.NewExitError(err, 1)
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}
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count := uint32(ctx.Uint("count"))
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skip := uint32(ctx.Uint("skip"))
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var inStream = os.Stdin
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if in := ctx.String("in"); in != "" {
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inStream, err = os.Open(in)
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if err != nil {
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return cli.NewExitError(err, 1)
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}
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}
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defer inStream.Close()
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reader := io.NewBinReaderFromIO(inStream)
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dumpDir := ctx.String("dump")
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if dumpDir != "" {
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cfg.ProtocolConfiguration.SaveStorageBatch = true
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}
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chain, prometheus, pprof, err := initBCWithMetrics(cfg, log)
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if err != nil {
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return err
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}
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defer chain.Close()
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defer prometheus.ShutDown()
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defer pprof.ShutDown()
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var start uint32
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if ctx.Bool("incremental") {
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start = reader.ReadU32LE()
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if chain.BlockHeight()+1 < start {
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return cli.NewExitError(fmt.Errorf("expected height: %d, dump starts at %d",
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chain.BlockHeight()+1, start), 1)
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}
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skip = chain.BlockHeight() + 1 - start
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}
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var allBlocks = reader.ReadU32LE()
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if reader.Err != nil {
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return cli.NewExitError(err, 1)
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}
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if skip+count > allBlocks {
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return cli.NewExitError(fmt.Errorf("input file has only %d blocks, can't read %d starting from %d", allBlocks, count, skip), 1)
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}
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if count == 0 {
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count = allBlocks - skip
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}
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gctx := newGraceContext()
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var lastIndex uint32
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dump := newDump()
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defer func() {
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_ = dump.tryPersist(dumpDir, lastIndex)
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}()
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var f = func(b *block.Block) error {
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select {
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case <-gctx.Done():
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return gctx.Err()
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default:
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return nil
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}
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}
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if dumpDir != "" {
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f = func(b *block.Block) error {
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select {
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case <-gctx.Done():
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return gctx.Err()
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default:
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}
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batch := chain.LastBatch()
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// The genesis block may already be persisted, so LastBatch() will return nil.
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if batch == nil && b.Index == 0 {
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return nil
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}
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dump.add(b.Index, batch)
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lastIndex = b.Index
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if b.Index%1000 == 0 {
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if err := dump.tryPersist(dumpDir, b.Index); err != nil {
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return fmt.Errorf("can't dump storage to file: %w", err)
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}
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}
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return nil
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}
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}
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err = chaindump.Restore(chain, reader, skip, count, f)
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if err != nil {
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return cli.NewExitError(err, 1)
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}
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return nil
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}
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func startServer(ctx *cli.Context) error {
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cfg, err := getConfigFromContext(ctx)
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if err != nil {
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return err
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}
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log, err := handleLoggingParams(ctx, cfg.ApplicationConfiguration)
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if err != nil {
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return err
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}
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grace, cancel := context.WithCancel(newGraceContext())
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defer cancel()
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serverConfig := network.NewServerConfig(cfg)
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chain, prometheus, pprof, err := initBCWithMetrics(cfg, log)
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if err != nil {
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return err
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}
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serv, err := network.NewServer(serverConfig, chain, log)
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if err != nil {
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return cli.NewExitError(fmt.Errorf("failed to create network server: %w", err), 1)
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}
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rpcServer := server.New(chain, cfg.ApplicationConfiguration.RPC, serv, serv.GetOracle(), log)
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errChan := make(chan error)
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go serv.Start(errChan)
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rpcServer.Start(errChan)
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sighupCh := make(chan os.Signal, 1)
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signal.Notify(sighupCh, syscall.SIGHUP)
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fmt.Fprintln(ctx.App.Writer, logo())
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fmt.Fprintln(ctx.App.Writer, serv.UserAgent)
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fmt.Fprintln(ctx.App.Writer)
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var shutdownErr error
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Main:
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for {
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select {
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case err := <-errChan:
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shutdownErr = fmt.Errorf("server error: %w", err)
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cancel()
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case sig := <-sighupCh:
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switch sig {
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case syscall.SIGHUP:
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log.Info("SIGHUP received, restarting rpc-server")
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serverErr := rpcServer.Shutdown()
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if serverErr != nil {
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errChan <- fmt.Errorf("error while restarting rpc-server: %w", serverErr)
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break
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}
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rpcServer = server.New(chain, cfg.ApplicationConfiguration.RPC, serv, serv.GetOracle(), log)
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rpcServer.Start(errChan)
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}
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case <-grace.Done():
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signal.Stop(sighupCh)
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serv.Shutdown()
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if serverErr := rpcServer.Shutdown(); serverErr != nil {
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shutdownErr = fmt.Errorf("error on shutdown: %w", serverErr)
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}
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prometheus.ShutDown()
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pprof.ShutDown()
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chain.Close()
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break Main
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}
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}
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if shutdownErr != nil {
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return cli.NewExitError(shutdownErr, 1)
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}
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return nil
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}
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// configureAddresses sets up addresses for RPC, Prometheus and Pprof depending from the provided config.
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// In case RPC or Prometheus or Pprof Address provided each of them will use it.
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// In case global Address (of the node) provided and RPC/Prometheus/Pprof don't have configured addresses they will
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// use global one. So Node and RPC and Prometheus and Pprof will run on one address.
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func configureAddresses(cfg *config.ApplicationConfiguration) {
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if cfg.Address != "" {
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if cfg.RPC.Address == "" {
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cfg.RPC.Address = cfg.Address
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}
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if cfg.Prometheus.Address == "" {
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cfg.Prometheus.Address = cfg.Address
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}
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if cfg.Pprof.Address == "" {
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cfg.Pprof.Address = cfg.Address
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}
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}
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}
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// initBlockChain initializes BlockChain with preselected DB.
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func initBlockChain(cfg config.Config, log *zap.Logger) (*core.Blockchain, error) {
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store, err := storage.NewStore(cfg.ApplicationConfiguration.DBConfiguration)
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if err != nil {
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return nil, cli.NewExitError(fmt.Errorf("could not initialize storage: %w", err), 1)
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}
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chain, err := core.NewBlockchain(store, cfg.ProtocolConfiguration, log)
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if err != nil {
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return nil, cli.NewExitError(fmt.Errorf("could not initialize blockchain: %w", err), 1)
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}
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return chain, nil
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}
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func logo() string {
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return `
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_ ____________ __________
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/ | / / ____/ __ \ / ____/ __ \
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/ |/ / __/ / / / /_____/ / __/ / / /
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/ /| / /___/ /_/ /_____/ /_/ / /_/ /
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/_/ |_/_____/\____/ \____/\____/
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`
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}
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