Go Check Timeout

checkto is a linter for identifying when structs contain timeout fields that aren't time.Duration, and when a timeout is assigned, that's its done so with a value rather than an expression.

Examples

The following struct would fail the linter because the timeout field isn't using time.Duration

type SomeConfig struct {
	SomeHost string
	SomeTimeout int
	SomePort string
}

The following assignment would fail because it's using an operation, instead of the aforementioned time.Duration field of a config struct:

func main() {
	t, _ := time.ParseDuration("500ms")
	cfg := SomeConfig{SomeTimeout: t}
	_ = http.Server{WriteTimeout: cfg.SomeTimeout * time.Second}
}

The following assignment would fail for the same reason as above:

func main() {
	t, _ := time.ParseDuration("500ms")
	_ = http.Server{WriteTimeout: t * time.Second}
}