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root.go
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/
root.go
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package commands
import (
"fmt"
"os"
"github.com/spf13/cobra"
"github.com/spf13/viper"
cfg "github.com/tendermint/tendermint/config"
"github.com/tendermint/tendermint/libs/cli"
tmflags "github.com/tendermint/tendermint/libs/cli/flags"
"github.com/tendermint/tendermint/libs/log"
)
var (
config = cfg.DefaultConfig()
logger = log.NewTMLogger(log.NewSyncWriter(os.Stdout))
)
func init() {
registerFlagsRootCmd(RootCmd)
}
func registerFlagsRootCmd(cmd *cobra.Command) {
cmd.PersistentFlags().String("log_level", config.LogLevel, "Log level")
}
// ParseConfig retrieves the default environment configuration,
// sets up the Tendermint root and ensures that the root exists
func ParseConfig() (*cfg.Config, error) {
conf := cfg.DefaultConfig()
err := viper.Unmarshal(conf)
if err != nil {
return nil, err
}
conf.SetRoot(conf.RootDir)
cfg.EnsureRoot(conf.RootDir)
if err = conf.ValidateBasic(); err != nil {
return nil, fmt.Errorf("Error in config file: %v", err)
}
return conf, err
}
// RootCmd is the root command for Tendermint core.
var RootCmd = &cobra.Command{
Use: "tendermint",
Short: "Tendermint Core (BFT Consensus) in Go",
PersistentPreRunE: func(cmd *cobra.Command, args []string) (err error) {
if cmd.Name() == VersionCmd.Name() {
return nil
}
config, err = ParseConfig()
if err != nil {
return err
}
if config.LogFormat == cfg.LogFormatJSON {
logger = log.NewTMJSONLogger(log.NewSyncWriter(os.Stdout))
}
logger, err = tmflags.ParseLogLevel(config.LogLevel, logger, cfg.DefaultLogLevel())
if err != nil {
return err
}
if viper.GetBool(cli.TraceFlag) {
logger = log.NewTracingLogger(logger)
}
logger = logger.With("module", "main")
return nil
},
}