Use cobra & viper for parsing parameters & environment
This commit is contained in:
parent
7dd4f13ab7
commit
bbfc5ec7f6
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@ -1,140 +1,103 @@
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package main
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import (
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"errors"
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// "errors"
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"fmt"
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"github.com/spf13/cobra"
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"github.com/spf13/viper"
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"strings"
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// "github.com/davecgh/go-spew/spew"
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"log"
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// "log"
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"os"
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// "reflect"
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"strconv"
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// "strconv"
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)
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type ConfigEntry struct {
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Type string
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Ptr interface{}
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Values []string
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}
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const (
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programBinary string = "trello2mail"
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)
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type TrelloConfig struct {
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Url string
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Token string
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}
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var (
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ALLOWED_AUTH_TYPES = []string{"none", "plain", "login"}
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ALLOWED_SECURITY_TYPES = []string{"none", "tls", "starttls"}
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)
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type SmtpConfig struct {
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Hostname string
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Port uint16
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Username string
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Password string
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AuthType string
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SecurityType string
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}
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type EmailConfig struct {
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From string
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To []string
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Subject string
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}
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type Config struct {
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Email EmailConfig
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Smtp SmtpConfig
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Trello TrelloConfig
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EmailFrom string `mapstructure:"email-from"`
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EmailTo []string `mapstructure:"email-to"`
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EmailSubject string `mapstructure:"email-subject"`
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SmtpHostname string `mapstructure:"smtp-hostname"`
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SmtpPort uint16 `mapstructure:"smtp-port"`
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SmtpUsername string `mapstructure:"smtp-username"`
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SmtpPassword string `mapstructure:"smtp-password"`
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SmtpAuthType string `mapstructure:"smtp-auth-type"`
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SmtpSecurityType string `mapstructure:"smtp-security-type"`
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TrelloUrl string `mapstructure:"trello-url"`
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TrelloToken string `mapstructure:"trello-token"`
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Parser *cobra.Command `mapstructure:"-"`
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}
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func NewConfig() *Config {
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return &Config{}
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self := &Config{}
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cmd := &cobra.Command{
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Use: programBinary,
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Run: func(cmd *cobra.Command, args []string) { /* placeholder */ },
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}
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viper.SetEnvKeyReplacer(strings.NewReplacer("-", "_"))
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viper.AutomaticEnv()
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cmd.PersistentFlags().StringVarP(&self.EmailFrom, "email-from", "", "", "address of sender")
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cmd.PersistentFlags().StringArrayVarP(&self.EmailTo, "email-to", "", []string{}, "address(es) of recipient(s)")
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cmd.PersistentFlags().StringVarP(&self.EmailSubject, "email-subject", "", "", "email subject")
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viper.BindPFlag("email-from", cmd.PersistentFlags().Lookup("email-from"))
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viper.BindPFlag("email-to", cmd.PersistentFlags().Lookup("email-to"))
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viper.BindPFlag("email-subject", cmd.PersistentFlags().Lookup("email-subject"))
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cmd.PersistentFlags().StringVarP(&self.TrelloUrl, "trello-url", "", "", "url of trello board")
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cmd.PersistentFlags().StringVarP(&self.TrelloToken, "trello-token", "", "", "url of trello token")
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viper.BindPFlag("trello-url", cmd.PersistentFlags().Lookup("trello-url"))
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viper.BindPFlag("trello-token", cmd.PersistentFlags().Lookup("trello-token"))
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cmd.PersistentFlags().StringVarP(&self.SmtpHostname, "smtp-hostname", "", "", "address of smtp server")
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cmd.PersistentFlags().StringVarP(&self.SmtpUsername, "smtp-username", "", "", "username for smtp server")
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cmd.PersistentFlags().StringVarP(&self.SmtpPassword, "smtp-password", "", "", "password for smtp server")
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cmd.PersistentFlags().Uint16VarP(&self.SmtpPort, "smtp-port", "", 25, "port for smtp server")
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cmd.PersistentFlags().StringVarP(&self.SmtpAuthType, "smtp-auth-type", "", "", "authentication type for smtp server")
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cmd.PersistentFlags().StringVarP(&self.SmtpSecurityType, "smtp-security-type", "", "", "security type for smtp server")
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viper.BindPFlag("smtp-hostname", cmd.PersistentFlags().Lookup("smtp-hostname"))
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viper.BindPFlag("smtp-username", cmd.PersistentFlags().Lookup("smtp-username"))
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viper.BindPFlag("smtp-password", cmd.PersistentFlags().Lookup("smtp-password"))
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viper.BindPFlag("smtp-port", cmd.PersistentFlags().Lookup("smtp-port"))
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viper.BindPFlag("smtp-auth-type", cmd.PersistentFlags().Lookup("smtp-auth-type"))
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viper.BindPFlag("smtp-security-type", cmd.PersistentFlags().Lookup("smtp-security-type"))
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self.Parser = cmd
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return self
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}
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func (config *Config) ParseEnv() (int, error) {
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// map env variables to config pointers
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dataMap := map[string](ConfigEntry){
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"EMAIL_FROM": ConfigEntry{"string", &(config.Email.From), nil},
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"EMAIL_TO": ConfigEntry{"stringlist", &(config.Email.To), nil},
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"EMAIL_SUBJECT": ConfigEntry{"string", &(config.Email.Subject), nil},
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"TRELLO_URL": ConfigEntry{"string", &(config.Trello.Url), nil},
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"TRELLO_TOKEN": ConfigEntry{"string", &(config.Trello.Token), nil},
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func (self *Config) Parse() error {
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// set config defaults
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// persistent flags
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// environment & config
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// viper.SetEnvPrefix("")
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"SMTP_HOSTNAME": ConfigEntry{"string", &(config.Smtp.Hostname), nil},
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"SMTP_USERNAME": ConfigEntry{"string", &(config.Smtp.Username), nil},
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"SMTP_PASSWORD": ConfigEntry{"string", &(config.Smtp.Password), nil},
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"SMTP_PORT": ConfigEntry{"uint16", &(config.Smtp.Port), nil},
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fmt.Printf("all: %#v\n", viper.AllSettings())
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fmt.Printf("email-from %s\n", viper.Get("email-from"))
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"SMTP_AUTH_TYPE": ConfigEntry{"string",
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&(config.Smtp.AuthType), []string{"none", "plain", "login"}},
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"SMTP_SECURITY_TYPE": ConfigEntry{"string",
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&(config.Smtp.SecurityType), []string{"none", "tls", "starttls"}},
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if err := self.Parser.Execute(); err != nil {
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fmt.Println(err)
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os.Exit(1)
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}
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for envVar, mapEntry := range dataMap {
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envValue := os.Getenv(envVar)
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if len(envValue) == 0 {
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errmsg := fmt.Sprintf(
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"Empty environment variable. Please set %s value",
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envVar,
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)
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log.Panic(errors.New(errmsg))
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}
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if mapEntry.Values != nil {
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allowedValue := false
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for _, v := range mapEntry.Values {
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if v == envValue {
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allowedValue = true
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}
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}
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if !allowedValue {
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errmsg := fmt.Sprintf(
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"Wrong value for %s=%s. Value must be one of %v",
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envVar,
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envValue,
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mapEntry.Values,
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)
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log.Panic(errors.New(errmsg))
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}
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}
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switch mapEntry.Type {
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case "string":
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*(mapEntry.Ptr.(*string)) = envValue
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case "stringlist":
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ptrs := strings.Split(envValue, ",")
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mapEntry.Ptr = ptrs
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case "uint16":
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u64, err := strconv.ParseUint(envValue, 10, 16)
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if err != nil {
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errmsg := fmt.Sprintf(
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"Unable to convert %s=%s to unsigned int",
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envVar,
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envValue,
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)
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log.Panic(errors.New(errmsg))
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}
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*(mapEntry.Ptr.(*uint16)) = uint16(u64)
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case "bool":
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b, err := strconv.ParseBool(envValue)
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if err != nil {
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errmsg := fmt.Sprintf(
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"Unable to convert %s=%s to boolean",
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envVar,
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envValue,
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)
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log.Panic(errors.New(errmsg))
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}
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*(mapEntry.Ptr.(*bool)) = b
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default:
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errmsg := fmt.Sprintf(
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"Undefined parser for %s<%s>",
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envVar,
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mapEntry.Type,
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)
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log.Panic(errors.New(errmsg))
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}
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if err := viper.Unmarshal(&self); err != nil {
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panic("Unable to unmarshal config")
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}
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// spew.Dump(config)
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return 0, nil
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return nil
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}
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@ -17,6 +17,12 @@ import (
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type EmailHeaders map[string]string
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type EmailConfig struct {
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From string
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To []string
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Subject string
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}
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type EmailCtx struct {
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Headers EmailHeaders
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BodyPlain string
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@ -9,22 +9,35 @@ import (
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func main() {
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// Setup config
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config := NewConfig()
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config.ParseEnv()
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config.Parse()
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fmt.Printf("%#v\n", config)
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// Get task list as markdown
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trelloCtx := NewTrello(config.Trello.Token)
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trelloBoard := trelloCtx.GetBoard(config.Trello.Url)
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trelloCtx := NewTrello(config.TrelloToken)
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trelloBoard := trelloCtx.GetBoard(config.TrelloUrl)
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trelloMarkdown := trelloBoard.ExportToMarkdown()
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trelloHtml := trelloBoard.ExportToHtml()
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config.Email.Subject = fmt.Sprintf("Daily mail for %s", trelloBoard.Name)
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config.EmailSubject = fmt.Sprintf("Daily mail for %s", trelloBoard.Name)
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// Create email enveloppe
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email := NewEmail()
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email.SetHeaders(config.Email)
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email.SetHeaders(EmailConfig{
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From: config.EmailFrom,
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To: config.EmailTo,
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Subject: config.EmailSubject,
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})
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email.SetBody(trelloHtml, trelloMarkdown)
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// Connect and send email
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transport := NewTransport(config.Smtp)
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transport := NewTransport(SmtpConfig{
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Hostname: config.SmtpHostname,
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Port: config.SmtpPort,
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Username: config.SmtpUsername,
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Password: config.SmtpPassword,
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AuthType: config.SmtpAuthType,
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SecurityType: config.SmtpSecurityType,
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})
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transport.Dial()
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transport.Authenticate()
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transport.Send(email)
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@ -8,6 +8,15 @@ import (
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"net/smtp"
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)
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type SmtpConfig struct {
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Hostname string
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Port uint16
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Username string
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Password string
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AuthType string
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SecurityType string
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}
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type TransportCtx struct {
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Config SmtpConfig
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Address string
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@ -17,6 +17,11 @@ const (
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APP_KEY string = "80dbcf6f88f62cc5639774e13342c20b"
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)
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type TrelloConfig struct {
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Url string
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Token string
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}
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type TrelloCtx struct {
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Token string
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Client *trello.Client
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@ -76,6 +81,9 @@ func (ctx *TrelloCtx) GetBoard(boardUrl string) TrelloBoard {
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boardId := strings.Split(parsedUrl.Path, "/")[2]
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board, err := ctx.Client.GetBoard(boardId, trello.Defaults())
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if err != nil {
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log.Panic(err)
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}
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return TrelloBoard{Ctx: ctx, Ptr: board, Name: board.Name}
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}
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3
go.mod
3
go.mod
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@ -5,4 +5,7 @@ require (
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github.com/pkg/errors v0.8.0 // indirect
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github.com/russross/blackfriday/v2 v2.0.1
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github.com/shurcooL/sanitized_anchor_name v0.0.0-20170918181015-86672fcb3f95 // indirect
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github.com/spf13/cobra v0.0.3
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github.com/spf13/pflag v1.0.3 // indirect
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github.com/spf13/viper v1.2.1
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)
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31
go.sum
31
go.sum
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@ -1,8 +1,39 @@
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github.com/adlio/trello v0.0.0-20180621142300-8a458717123e h1:i5+hZJx4iTPT4+ojV5zi50UIPUxs7CH8r+P3BFB4Ofs=
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github.com/adlio/trello v0.0.0-20180621142300-8a458717123e/go.mod h1:VjzhFGdnEJGih1AsIWi/yU6y01yZh0DuEWCNAyOJ1WE=
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github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
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github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
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github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
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github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
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github.com/magiconair/properties v1.8.0 h1:LLgXmsheXeRoUOBOjtwPQCWIYqM/LU1ayDtDePerRcY=
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github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
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github.com/mitchellh/mapstructure v1.0.0 h1:vVpGvMXJPqSDh2VYHF7gsfQj8Ncx+Xw5Y1KHeTRY+7I=
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github.com/mitchellh/mapstructure v1.0.0/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
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github.com/pelletier/go-toml v1.2.0 h1:T5zMGML61Wp+FlcbWjRDT7yAxhJNAiPPLOFECq181zc=
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github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
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github.com/pkg/errors v0.8.0 h1:WdK/asTD0HN+q6hsWO3/vpuAkAr+tw6aNJNDFFf0+qw=
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github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
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github.com/russross/blackfriday/v2 v2.0.1 h1:lPqVAte+HuHNfhJ/0LC98ESWRz8afy9tM/0RK8m9o+Q=
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github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
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github.com/shurcooL/sanitized_anchor_name v0.0.0-20170918181015-86672fcb3f95 h1:/vdW8Cb7EXrkqWGufVMES1OH2sU9gKVb2n9/1y5NMBY=
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github.com/shurcooL/sanitized_anchor_name v0.0.0-20170918181015-86672fcb3f95/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
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github.com/spf13/afero v1.1.2 h1:m8/z1t7/fwjysjQRYbP0RD+bUIF/8tJwPdEZsI83ACI=
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github.com/spf13/afero v1.1.2/go.mod h1:j4pytiNVoe2o6bmDsKpLACNPDBIoEAkihy7loJ1B0CQ=
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github.com/spf13/cast v1.2.0 h1:HHl1DSRbEQN2i8tJmtS6ViPyHx35+p51amrdsiTCrkg=
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github.com/spf13/cast v1.2.0/go.mod h1:r2rcYCSwa1IExKTDiTfzaxqT2FNHs8hODu4LnUfgKEg=
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github.com/spf13/cobra v0.0.3 h1:ZlrZ4XsMRm04Fr5pSFxBgfND2EBVa1nLpiy1stUsX/8=
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github.com/spf13/cobra v0.0.3/go.mod h1:1l0Ry5zgKvJasoi3XT1TypsSe7PqH0Sj9dhYf7v3XqQ=
|
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github.com/spf13/jwalterweatherman v1.0.0 h1:XHEdyB+EcvlqZamSM4ZOMGlc93t6AcsBEu9Gc1vn7yk=
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github.com/spf13/jwalterweatherman v1.0.0/go.mod h1:cQK4TGJAtQXfYWX+Ddv3mKDzgVb68N+wFjFa4jdeBTo=
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github.com/spf13/pflag v1.0.2/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
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github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg=
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github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
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github.com/spf13/viper v1.2.1 h1:bIcUwXqLseLF3BDAZduuNfekWG87ibtFxi59Bq+oI9M=
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github.com/spf13/viper v1.2.1/go.mod h1:P4AexN0a+C9tGAnUFNwDMYYZv3pjFuvmeiMyKRaNVlI=
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golang.org/x/sys v0.0.0-20180906133057-8cf3aee42992 h1:BH3eQWeGbwRU2+wxxuuPOdFBmaiBH81O8BugSjHeTFg=
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golang.org/x/sys v0.0.0-20180906133057-8cf3aee42992/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
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golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
|
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
|
||||
gopkg.in/yaml.v2 v2.2.1 h1:mUhvW9EsL+naU5Q3cakzfE91YhliOondGd6ZrsDBHQE=
|
||||
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
|
||||
|
|
|
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Reference in a new issue