Ejemplo n.º 1
0
// Retrieve the Status and Headers for a given key path
func (c *Cache) Header(key string) (Header, error) {
	path := headerPrefix + formatPrefix + hashKey(key)
	f, err := c.fs.Open(path)
	if err != nil {
		if vfs.IsNotExist(err) {
			return Header{}, ErrNotFoundInCache
		}
		return Header{}, err
	}

	return readHeaders(bufio.NewReader(f))
}
Ejemplo n.º 2
0
// Retrieve returns a cached Resource for the given key
func (c *Cache) Retrieve(key string) (*Resource, error) {
	f, err := c.fs.Open(bodyPrefix + formatPrefix + hashKey(key))
	if err != nil {
		if vfs.IsNotExist(err) {
			return nil, ErrNotFoundInCache
		}
		return nil, err
	}
	h, err := c.Header(key)
	if err != nil {
		if vfs.IsNotExist(err) {
			return nil, ErrNotFoundInCache
		}
		return nil, err
	}
	res := NewResource(h.StatusCode, f, h.Header)
	if staleTime, exists := c.stale[key]; exists {
		if !res.DateAfter(staleTime) {
			log.Printf("stale marker of %s found", staleTime)
			res.MarkStale()
		}
	}
	return res, nil
}