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package gonfig |
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import ( |
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"flag" |
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"log" |
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"os" |
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"strconv" |
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"strings" |
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"sync" |
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"github.com/joho/godotenv" |
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) |
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var configurator sync.Once |
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// GetEnv returns ENV variable from environment or .env file as []byte if it's possible and ENV variable exists |
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// Default 0 |
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func GetEnv(key string) []byte { |
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configurator.Do(func() { |
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_ = godotenv.Load() |
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}) |
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return []byte(os.Getenv(key)) |
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} |
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// GetEnvStr returns ENV variable from environment or .env file as string if it's possible and ENV variable exists |
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// Default "" |
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func GetEnvStr(key string) string { |
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return string(GetEnv(key)) |
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} |
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// GetEnvArrStr returns ENV variable from environment or .env file as []string if it's possible and ENV variable exists |
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// Default "" |
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func GetEnvArrStr(key string) []string { |
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str := string(GetEnv(key)) |
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if str == "" { |
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return nil |
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} |
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return strings.Split(str, ";") |
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} |
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// GetEnvStrWithDefault returns ENV variable from environment or .env file as string else returns default value |
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func GetEnvStrWithDefault(key string, defaultValue string) string { |
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if value := string(GetEnv(key)); value != "" { |
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return value |
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} |
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return defaultValue |
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} |
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// GetEnvInt returns ENV variable from environment or .env file as int if it's possible and ENV variable exists |
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// Default 0 |
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func GetEnvInt(key string) int { |
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result, err := strconv.Atoi(GetEnvStr(key)) |
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if err != nil { |
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log.Println(err) |
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} |
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return result |
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} |
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// GetEnvIntWithDefault returns ENV variable from environment or .env file as int else returns default value |
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func GetEnvIntWithDefault(key string, defaultValue int) int { |
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if result, err := strconv.Atoi(GetEnvStr(key)); err == nil { |
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return result |
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} |
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return defaultValue |
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} |
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// GetListenPort returns a flag to the port to launch the application. |
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// Looks at the PORT environment variable if the application is running without a flag. |
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// Default 80 |
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func GetListenPort() *string { |
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port := "80" |
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if envPort := GetEnvStr("PORT"); envPort != "" { |
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port = envPort |
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} |
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return flag.String("port", port, "Example: -port=8080") |
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} |
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//GetApplicationMode returns the flag to the application launch mode. |
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// Looks at the APP_MODE environment variable if the application is running without a flag -mode |
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// Default release |
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func GetApplicationMode() *string { |
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mode := "release" |
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if envMode := GetEnvStr("APP_MODE"); envMode != "" { |
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mode = envMode |
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} |
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return flag.String("mode", mode, "Example: -mode=debug") |
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} |
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zevst /
gonfig
