onasty/mailer/config.go(view raw)
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package main
import (
"os"
"strconv"
"sync"
)
var (
configInstance *Config
once sync.Once
)
type Config struct {
AppURL string
FrontendURL string
NatsURL string
MailgunFrom string
MailgunDomain string
MailgunAPIKey string
LogLevel string
LogFormat string
LogShowLine bool
MetricsEnabled bool
MetricsPort int
}
func NewConfig() *Config {
once.Do(func() {
configInstance = &Config{
AppURL: getenvOrDefault("APP_URL", ""),
FrontendURL: getenvOrDefault("FRONTEND_URL", ""),
NatsURL: getenvOrDefault("NATS_URL", ""),
MailgunFrom: getenvOrDefault("MAILGUN_FROM", ""),
MailgunDomain: getenvOrDefault("MAILGUN_DOMAIN", ""),
MailgunAPIKey: getenvOrDefault("MAILGUN_API_KEY", ""),
LogLevel: getenvOrDefault("LOG_LEVEL", "debug"),
LogFormat: getenvOrDefault("LOG_FORMAT", "json"),
LogShowLine: getenvOrDefault("LOG_SHOW_LINE", "true") == "true",
MetricsPort: mustGetenvOrDefaultInt("METRICS_PORT", 8001),
MetricsEnabled: getenvOrDefault("METRICS_ENABLED", "true") == "true",
}
})
return configInstance
}
func getenvOrDefault(key, def string) string {
if v, ok := os.LookupEnv(key); ok {
return v
}
return def
}
func mustGetenvOrDefaultInt(key string, def int) int {
if v, ok := os.LookupEnv(key); ok {
r, err := strconv.Atoi(v)
if err != nil {
panic(err)
}
return r
}
return def
}
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