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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| package config | ||
|
|
||
| import ( | ||
| "log/slog" | ||
| "strings" | ||
| "time" | ||
|
|
||
| "github.com/gookit/validate" | ||
| "github.com/knadh/koanf" | ||
| "github.com/knadh/koanf/providers/env" | ||
| "github.com/knadh/koanf/providers/structs" | ||
| ) | ||
|
|
||
| type Config struct { | ||
| IP string `koanf:"ip" validate:"required|ip"` | ||
| Port int `koanf:"port" validate:"required|uint"` | ||
| LogLevel slog.Level `koanf:"log_level"` | ||
| ScrapeInterval time.Duration `koanf:"scrape_interval" validate:"required"` | ||
| ZettelkastenDirectory string `koanf:"zettelkasten_directory" validate:"required"` | ||
| } | ||
|
|
||
| func LoadConfig() (Config, error) { | ||
| k := koanf.New(".") | ||
|
|
||
| // Set default values | ||
| k.Load(structs.Provider(Config{ | ||
| IP: "0.0.0.0", | ||
| Port: 6969, | ||
| LogLevel: slog.LevelInfo, | ||
| ScrapeInterval: time.Minute * 5, | ||
| }, "koanf"), nil) | ||
|
|
||
| // Load env variables | ||
| k.Load(env.Provider("", ".", strings.ToLower), nil) | ||
|
|
||
| // Unmarshal into config struct | ||
| var cfg Config | ||
| k.Unmarshal("", &cfg) | ||
|
|
||
| // Validate config | ||
| v := validate.Struct(cfg) | ||
| v.AddValidator("duration", validateDuration) | ||
| if !v.Validate() { | ||
| return Config{}, v.Errors | ||
| } | ||
|
|
||
| return cfg, nil | ||
| } | ||
|
|
||
| func validateDuration(val time.Duration) bool { | ||
| return val > 0 | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,146 @@ | ||
| package config | ||
|
|
||
| import ( | ||
| "log/slog" | ||
| "testing" | ||
| "time" | ||
| ) | ||
|
|
||
| func TestLoadConfig_DefaultValues(t *testing.T) { | ||
| t.Setenv("ZETTELKASTEN_DIRECTORY", "/any/dir") | ||
| c, err := LoadConfig() | ||
| if err != nil { | ||
| t.Fatalf("Expected no error, got: %v", err) | ||
| } | ||
|
|
||
| expected := Config{ | ||
| IP: "0.0.0.0", | ||
| Port: 6969, | ||
| LogLevel: slog.LevelInfo, | ||
| ScrapeInterval: time.Minute * 5, | ||
| ZettelkastenDirectory: "/any/dir", | ||
| } | ||
| if c != expected { | ||
| t.Errorf("Expected %v, got: %v", expected, c) | ||
| } | ||
| } | ||
|
|
||
| func TestLoadConfig_PartialEnv(t *testing.T) { | ||
| t.Setenv("PORT", "4444") | ||
| t.Setenv("LOG_LEVEL", "DEBUG") | ||
| t.Setenv("ZETTELKASTEN_DIRECTORY", "/any/dir") | ||
| c, err := LoadConfig() | ||
| if err != nil { | ||
| t.Fatalf("Expected no error, got: %v", err) | ||
| } | ||
|
|
||
| expected := Config{ | ||
| IP: "0.0.0.0", | ||
| Port: 4444, | ||
| LogLevel: slog.LevelDebug, | ||
| ScrapeInterval: time.Minute * 5, | ||
| ZettelkastenDirectory: "/any/dir", | ||
| } | ||
| if c != expected { | ||
| t.Errorf("Expected %v, got: %v", expected, c) | ||
| } | ||
| } | ||
|
|
||
| func TestLoadConfig_FullEnv(t *testing.T) { | ||
| t.Setenv("IP", "127.0.0.1") | ||
| t.Setenv("PORT", "4444") | ||
| t.Setenv("LOG_LEVEL", "DEBUG") | ||
| t.Setenv("SCRAPE_INTERVAL", "5m") | ||
| t.Setenv("ZETTELKASTEN_DIRECTORY", "/any/dir") | ||
| c, err := LoadConfig() | ||
| if err != nil { | ||
| t.Fatalf("Expected no error, got: %v", err) | ||
| } | ||
|
|
||
| expected := Config{ | ||
| IP: "127.0.0.1", | ||
| Port: 4444, | ||
| LogLevel: slog.LevelDebug, | ||
| ScrapeInterval: time.Minute * 5, | ||
| ZettelkastenDirectory: "/any/dir", | ||
| } | ||
| if c != expected { | ||
| t.Errorf("Expected %v, got: %v", expected, c) | ||
| } | ||
| } | ||
|
|
||
| func TestLoadConfig_Validate(t *testing.T) { | ||
| data := []struct { | ||
| name string | ||
| shouldError bool | ||
| env map[string]string | ||
| }{ | ||
| { | ||
| name: "missing directory", | ||
| shouldError: true, | ||
| env: map[string]string{ | ||
| "IP": "0.0.0.0", | ||
| "PORT": "4444", | ||
| "LOG_LEVEL": "INFO", | ||
| }, | ||
| }, | ||
| { | ||
| name: "invalid ip", | ||
| shouldError: true, | ||
| env: map[string]string{ | ||
| "IP": "any-string", | ||
| "PORT": "4444", | ||
| "LOG_LEVEL": "INFO", | ||
| "SCRAPE_INTERVAL": "5m", | ||
| "ZETTELKASTEN_DIRECTORY": "/any/dir", | ||
| }, | ||
| }, | ||
| { | ||
| name: "invalid port", | ||
| shouldError: true, | ||
| env: map[string]string{ | ||
| "IP": "0.0.0.0", | ||
| "PORT": "-1", | ||
| "LOG_LEVEL": "INFO", | ||
| "SCRAPE_INTERVAL": "5m", | ||
| "ZETTELKASTEN_DIRECTORY": "/any/dir", | ||
| }, | ||
| }, | ||
| { | ||
| name: "invalid interval", | ||
| shouldError: true, | ||
| env: map[string]string{ | ||
| "IP": "0.0.0.0", | ||
| "PORT": "4444", | ||
| "LOG_LEVEL": "INFO", | ||
| "SCRAPE_INTERVAL": "5", | ||
| "ZETTELKASTEN_DIRECTORY": "/any/dir", | ||
| }, | ||
| }, | ||
| { | ||
| name: "valid config", | ||
| shouldError: false, | ||
| env: map[string]string{ | ||
| "IP": "0.0.0.0", | ||
| "PORT": "4444", | ||
| "LOG_LEVEL": "INFO", | ||
| "SCRAPE_INTERVAL": "5m", | ||
| "ZETTELKASTEN_DIRECTORY": "/any/dir", | ||
| }, | ||
| }, | ||
| } | ||
|
|
||
| for _, d := range data { | ||
| t.Run(d.name, func(t *testing.T) { | ||
| for k, v := range d.env { | ||
| t.Setenv(k, v) | ||
| } | ||
| _, err := LoadConfig() | ||
| if err == nil && d.shouldError { | ||
| t.Errorf("Expected error, got: %v", err) | ||
| } else if err != nil && !d.shouldError { | ||
| t.Errorf("Expected no error, got: %v", err) | ||
| } | ||
| }) | ||
| } | ||
| } |