59 lines
1.5 KiB
Go
59 lines
1.5 KiB
Go
// Package config loads service configuration from environment variables.
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package config
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import (
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"errors"
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"fmt"
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"os"
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"time"
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)
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// Config holds all runtime configuration for the service.
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type Config struct {
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APIKey string
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StacksRoot string
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Port string
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LogLevel string
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UpdateTimeout time.Duration
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OptInLabel string
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Mode string
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}
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// Load reads configuration from environment variables, applies defaults,
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// and validates required fields. Returns an error if validation fails so
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// the service can fail-fast at startup.
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func Load() (*Config, error) {
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cfg := &Config{
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APIKey: os.Getenv("UPDATER_API_KEY"),
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StacksRoot: getenvDefault("STACKS_ROOT", "/home/shcizo/self-hosted"),
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Port: getenvDefault("PORT", "8080"),
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LogLevel: getenvDefault("LOG_LEVEL", "info"),
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OptInLabel: getenvDefault("OPT_IN_LABEL", "se.shcizo.auto-update"),
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Mode: getenvDefault("MODE", "compose"),
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}
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if cfg.APIKey == "" {
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return nil, errors.New("UPDATER_API_KEY is required")
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}
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if cfg.Mode != "compose" && cfg.Mode != "swarm" {
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return nil, fmt.Errorf("MODE %q is invalid: must be %q or %q", cfg.Mode, "compose", "swarm")
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}
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timeoutStr := getenvDefault("UPDATE_TIMEOUT", "5m")
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d, err := time.ParseDuration(timeoutStr)
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if err != nil {
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return nil, fmt.Errorf("UPDATE_TIMEOUT %q is not a valid duration: %w", timeoutStr, err)
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}
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cfg.UpdateTimeout = d
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return cfg, nil
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}
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func getenvDefault(key, fallback string) string {
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if v := os.Getenv(key); v != "" {
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return v
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}
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return fallback
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}
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