55 lines
1.2 KiB
Go
55 lines
1.2 KiB
Go
// Package checker defines the Checker interface and a helper utility to avoid import cycles.
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package checker
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import (
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"fmt"
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"net/http"
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"strings"
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"git.sad.ovh/sophie/nuke/internal"
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)
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type Impl interface {
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Check(*http.Request) (bool, error)
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Hash() string
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}
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type Func func(*http.Request) (bool, error)
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func (f Func) Check(r *http.Request) (bool, error) {
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return f(r)
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}
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func (f Func) Hash() string { return internal.FastHash(fmt.Sprintf("%#v", f)) }
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type List []Impl
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// Check runs each checker in the list against the request.
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// It returns true only if *all* checkers return true (AND semantics).
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// If any checker returns an error, the function returns false and the error.
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func (l List) Check(r *http.Request) (bool, error) {
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for _, c := range l {
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ok, err := c.Check(r)
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if err != nil {
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// Propagate the error; overall result is false.
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return false, err
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}
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if !ok {
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// One false means the combined result is false. Short-circuit
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// so we don't waste time.
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return false, err
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}
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}
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// Assume success until a checker says otherwise.
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return true, nil
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}
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func (l List) Hash() string {
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var sb strings.Builder
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for _, c := range l {
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fmt.Fprintln(&sb, c.Hash())
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}
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return internal.FastHash(sb.String())
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}
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