60 lines
1.6 KiB
Go
60 lines
1.6 KiB
Go
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package feeds
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import (
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"errors"
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"github.com/jackc/pgx/v5"
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)
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// ErrFormatMismatch is returned when the public export URL extension does not
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// match the feed's configured format. Public HTTP handlers must map this to the
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// same opaque 404 as an unknown token (no existence oracle).
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var ErrFormatMismatch = errors.New("format mismatch")
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// ErrNotFound is returned when a company-scoped feed (or related row) is missing.
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var ErrNotFound = errors.New("not found")
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// clientError is a validation/business message safe to return to API clients.
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type clientError struct {
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msg string
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}
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func (e *clientError) Error() string { return e.msg }
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// ClientMsg marks a message as safe to expose in HTTP 4xx responses.
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func ClientMsg(msg string) error {
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return &clientError{msg: msg}
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}
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// ClientError reports whether err is a known client-facing feeds error.
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func ClientError(err error) (msg string, ok bool) {
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if err == nil {
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return "", false
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}
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var ce *clientError
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if errors.As(err, &ce) {
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return ce.msg, true
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}
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switch {
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case errors.Is(err, ErrNotFound), errors.Is(err, pgx.ErrNoRows):
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return "not found", true
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case errors.Is(err, ErrFormatMismatch),
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errors.Is(err, errURLRequired),
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errors.Is(err, errURLScheme),
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errors.Is(err, errURLPrivate),
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errors.Is(err, errURLFTP),
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errors.Is(err, errDownloadTooLarge),
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errors.Is(err, errParseTooManyRows),
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errors.Is(err, errSourceRequired),
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errors.Is(err, errLocalSource):
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return err.Error(), true
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default:
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return "", false
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}
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}
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// IsNotFound reports whether err means a missing feed/resource.
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func IsNotFound(err error) bool {
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return errors.Is(err, ErrNotFound) || errors.Is(err, pgx.ErrNoRows)
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}
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