Added force parameter.

This commit is contained in:
Nathan Osman 2016-05-05 22:18:20 -07:00
parent da652efb28
commit 2c178c85e6
2 changed files with 5 additions and 4 deletions

7
cache/cache.go vendored
View File

@ -53,8 +53,9 @@ func (c *Cache) getFilenames(rawurl string) (hash, jsonFilename, dataFilename st
// GetReader obtains a Reader for the specified rawurl. If a downloader
// currently exists for the URL, a live reader is created and connected to it.
// If the URL exists in the cache, it is read using the standard file API. If
// not, a downloader and live reader are created.
func (c *Cache) GetReader(rawurl string) (Reader, error) {
// not, a downloader and live reader are created. The force parameter can be
// used to force a new download to be created.
func (c *Cache) GetReader(rawurl string, force bool) (Reader, error) {
hash, jsonFilename, dataFilename := c.getFilenames(rawurl)
c.mutex.Lock()
defer c.mutex.Unlock()
@ -65,7 +66,7 @@ func (c *Cache) GetReader(rawurl string) (Reader, error) {
if !os.IsNotExist(err) {
return nil, err
}
} else {
} else if !force {
r, err := newDiskReader(jsonFilename, dataFilename)
if err != nil {
return nil, err

View File

@ -56,7 +56,7 @@ func (s *Server) ServeHTTP(w http.ResponseWriter, req *http.Request) {
http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
return
}
r, err := s.cache.GetReader(rewrite(req.RequestURI))
r, err := s.cache.GetReader(rewrite(req.RequestURI), false)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
log.Println("[ERR]", err)