reflector.go/cmd/root.go

121 lines
2.7 KiB
Go

package cmd
import (
"encoding/json"
"io/ioutil"
"os"
"github.com/lbryio/lbry.go/errors"
"github.com/lbryio/lbry.go/util"
"github.com/lbryio/reflector.go/dht"
"github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
// Config is the base configuration for Prism when no sub commands are used.
type Config struct {
AwsID string `json:"aws_id"`
AwsSecret string `json:"aws_secret"`
BucketRegion string `json:"bucket_region"`
BucketName string `json:"bucket_name"`
DBConn string `json:"db_conn"`
}
var verbose []string
const (
verboseAll = "all"
verboseDHT = "dht"
verboseNodeFinder = "node_finder"
)
var conf string
var globalConfig Config
var rootCmd = &cobra.Command{
Use: "prism",
Short: "Prism is a single entry point application with multiple sub modules which can be leveraged individually or together",
PersistentPreRun: func(cmd *cobra.Command, args []string) {
debugLogger := logrus.New()
debugLogger.SetLevel(logrus.DebugLevel)
if util.InSlice(verboseAll, verbose) {
logrus.SetLevel(logrus.DebugLevel)
verbose = []string{verboseDHT, verboseNodeFinder}
}
for _, debugType := range verbose {
switch debugType {
case verboseDHT:
dht.UseLogger(debugLogger)
case verboseNodeFinder:
dht.NodeFinderUseLogger(debugLogger)
}
}
var err error
if conf == "" {
logrus.Errorln("--conf flag required")
os.Exit(1)
} else {
globalConfig, err = loadConfig(conf)
if err != nil {
logrus.Error(err)
os.Exit(1)
}
}
},
// Uncomment the following line if your bare application
// has an action associated with it:
// Run: func(cmd *cobra.Command, args []string) { },
}
func init() {
rootCmd.PersistentFlags().StringSliceVarP(&verbose, "verbose", "v", []string{}, "Verbose logging for specific components")
rootCmd.PersistentFlags().StringVar(&conf, "conf", "config.json", "Path to config")
}
// Execute adds all child commands to the root command and sets flags appropriately.
// This is called by main.main(). It only needs to happen once to the rootCmd.
func Execute() {
err := rootCmd.Execute()
if err != nil {
logrus.Errorln(err)
os.Exit(1)
}
}
func checkErr(err error) {
if err != nil {
panic(err)
}
}
func argFuncs(funcs ...cobra.PositionalArgs) cobra.PositionalArgs {
return func(cmd *cobra.Command, args []string) error {
for _, f := range funcs {
err := f(cmd, args)
if err != nil {
return err
}
}
return nil
}
}
func loadConfig(path string) (Config, error) {
var c Config
raw, err := ioutil.ReadFile(path)
if err != nil {
if os.IsNotExist(err) {
return c, errors.Err("config file not found")
}
return c, err
}
err = json.Unmarshal(raw, &c)
return c, err
}