github.com/badrootd/celestia-core@v0.0.0-20240305091328-aa4207a4b25d/cmd/cometbft/commands/root.go (about)

     1  package commands
     2  
     3  import (
     4  	"fmt"
     5  	"os"
     6  
     7  	"github.com/spf13/cobra"
     8  	"github.com/spf13/viper"
     9  
    10  	cfg "github.com/badrootd/celestia-core/config"
    11  	"github.com/badrootd/celestia-core/libs/cli"
    12  	cmtflags "github.com/badrootd/celestia-core/libs/cli/flags"
    13  	"github.com/badrootd/celestia-core/libs/log"
    14  )
    15  
    16  var (
    17  	config = cfg.DefaultConfig()
    18  	logger = log.NewTMLogger(log.NewSyncWriter(os.Stdout))
    19  )
    20  
    21  func init() {
    22  	registerFlagsRootCmd(RootCmd)
    23  }
    24  
    25  func registerFlagsRootCmd(cmd *cobra.Command) {
    26  	cmd.PersistentFlags().String("log_level", config.LogLevel, "log level")
    27  }
    28  
    29  // ParseConfig retrieves the default environment configuration,
    30  // sets up the CometBFT root and ensures that the root exists
    31  func ParseConfig(cmd *cobra.Command) (*cfg.Config, error) {
    32  	conf := cfg.DefaultConfig()
    33  	err := viper.Unmarshal(conf)
    34  	if err != nil {
    35  		return nil, err
    36  	}
    37  
    38  	var home string
    39  	if os.Getenv("CMTHOME") != "" {
    40  		home = os.Getenv("CMTHOME")
    41  	} else if os.Getenv("TMHOME") != "" {
    42  		// XXX: Deprecated.
    43  		home = os.Getenv("TMHOME")
    44  		logger.Error("Deprecated environment variable TMHOME identified. CMTHOME should be used instead.")
    45  	} else {
    46  		home, err = cmd.Flags().GetString(cli.HomeFlag)
    47  		if err != nil {
    48  			return nil, err
    49  		}
    50  	}
    51  
    52  	conf.RootDir = home
    53  
    54  	conf.SetRoot(conf.RootDir)
    55  	cfg.EnsureRoot(conf.RootDir)
    56  	if err := conf.ValidateBasic(); err != nil {
    57  		return nil, fmt.Errorf("error in config file: %v", err)
    58  	}
    59  	return conf, nil
    60  }
    61  
    62  // RootCmd is the root command for CometBFT core.
    63  var RootCmd = &cobra.Command{
    64  	Use:   "cometbft",
    65  	Short: "BFT state machine replication for applications in any programming languages",
    66  	PersistentPreRunE: func(cmd *cobra.Command, args []string) (err error) {
    67  		if cmd.Name() == VersionCmd.Name() {
    68  			return nil
    69  		}
    70  
    71  		config, err = ParseConfig(cmd)
    72  		if err != nil {
    73  			return err
    74  		}
    75  
    76  		if config.LogFormat == cfg.LogFormatJSON {
    77  			logger = log.NewTMJSONLogger(log.NewSyncWriter(os.Stdout))
    78  		}
    79  
    80  		logger, err = cmtflags.ParseLogLevel(config.LogLevel, logger, cfg.DefaultLogLevel)
    81  		if err != nil {
    82  			return err
    83  		}
    84  
    85  		if viper.GetBool(cli.TraceFlag) {
    86  			logger = log.NewTracingLogger(logger)
    87  		}
    88  
    89  		logger = logger.With("module", "main")
    90  		return nil
    91  	},
    92  }