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116 lines
2.4 KiB
116 lines
2.4 KiB
package config
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"log"
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"os"
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"path/filepath"
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"strings"
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"errors"
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//"crypto/rand"
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//"encoding/hex"
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)
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var APP_DIR = os.Getenv("HOME") + "/.tendermint"
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/* Global & initialization */
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var Config Config_
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func init() {
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configFile := APP_DIR+"/config.json"
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// try to read configuration. if missing, write default
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configBytes, err := ioutil.ReadFile(configFile)
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if err != nil {
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defaultConfig.write(configFile)
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fmt.Println("Config file written to config.json. Please edit & run again")
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os.Exit(1)
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return
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}
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// try to parse configuration. on error, die
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Config = Config_{}
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err = json.Unmarshal(configBytes, &Config)
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if err != nil {
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log.Panicf("Invalid configuration file %s: %v", configFile, err)
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}
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err = Config.validate()
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if err != nil {
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log.Panicf("Invalid configuration file %s: %v", configFile, err)
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}
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}
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/* Default configuration */
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var defaultConfig = Config_{
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Host: "127.0.0.1",
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Port: 8770,
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Db: DbConfig{
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Type: "level",
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Dir: APP_DIR+"/data",
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},
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Twilio: TwilioConfig{
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},
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}
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/* Configuration types */
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type Config_ struct {
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Host string
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Port int
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Db DbConfig
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Twilio TwilioConfig
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}
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type TwilioConfig struct {
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Sid string
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Token string
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From string
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To string
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MinInterval int
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}
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type DbConfig struct {
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Type string
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Dir string
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}
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func (cfg *Config_) validate() error {
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if cfg.Host == "" { return errors.New("Host must be set") }
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if cfg.Port == 0 { return errors.New("Port must be set") }
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if cfg.Db.Type == "" { return errors.New("Db.Type must be set") }
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return nil
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}
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func (cfg *Config_) bytes() []byte {
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configBytes, err := json.Marshal(cfg)
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if err != nil { panic(err) }
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return configBytes
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}
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func (cfg *Config_) write(configFile string) {
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if strings.Index(configFile, "/") != -1 {
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err := os.MkdirAll(filepath.Dir(configFile), 0700)
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if err != nil { panic(err) }
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}
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err := ioutil.WriteFile(configFile, cfg.bytes(), 0600)
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if err != nil {
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panic(err)
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}
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}
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/* TODO: generate priv/pub keys
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func generateKeys() string {
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bytes := &[30]byte{}
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rand.Read(bytes[:])
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return hex.EncodeToString(bytes[:])
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}
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*/
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