envhelper.go

package main

import (
	"os"
	"strings"
	"strconv"
)

// Simple helper function to read an environment or return a default value
func getEnv(key string, defaultVal string) string {
    if value, exists := os.LookupEnv(key); exists {
	return value
    }

    return defaultVal
}

// Simple helper function to read an environment variable into integer or return a default value
func getEnvAsInt(name string, defaultVal int) int {
    valueStr := getEnv(name, "")
    if value, err := strconv.Atoi(valueStr); err == nil {
	return value
    }

    return defaultVal
}

// Helper to read an environment variable into a bool or return default value
func getEnvAsBool(name string, defaultVal bool) bool {
    valStr := getEnv(name, "")
    if val, err := strconv.ParseBool(valStr); err == nil {
	return val
    }

    return defaultVal
}

// Helper to read an environment variable into a string slice or return default value
func getEnvAsSlice(name string, defaultVal []string, sep string) []string {
    valStr := getEnv(name, "")

    if valStr == "" {
	return defaultVal
    }

    val := strings.Split(valStr, sep)

    return val
}