X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/ffd4738242c61fa5acd423f927339f836dfb0ffb..1654f776b55bbb861f72c0dd3118ad1beec5db31:/sdk/go/keepclient/keepclient.go

diff --git a/sdk/go/keepclient/keepclient.go b/sdk/go/keepclient/keepclient.go
index 79a87156a6..4f84afca61 100644
--- a/sdk/go/keepclient/keepclient.go
+++ b/sdk/go/keepclient/keepclient.go
@@ -72,6 +72,7 @@ type KeepClient struct {
 	lock               sync.RWMutex
 	Client             *http.Client
 	Retries            int
+	BlockCache         *BlockCache
 
 	// set to 1 if all writable services are of disk type, otherwise 0
 	replicasPerService int
@@ -167,6 +168,10 @@ func (kc *KeepClient) PutR(r io.Reader) (locator string, replicas int, err error
 }
 
 func (kc *KeepClient) getOrHead(method string, locator string) (io.ReadCloser, int64, string, error) {
+	if strings.HasPrefix(locator, "d41d8cd98f00b204e9800998ecf8427e+0") {
+		return ioutil.NopCloser(bytes.NewReader(nil)), 0, "", nil
+	}
+
 	var errs []string
 
 	tries_remaining := 1 + kc.Retries
@@ -402,6 +407,14 @@ func (kc *KeepClient) getSortedRoots(locator string) []string {
 	return found
 }
 
+func (kc *KeepClient) cache() *BlockCache {
+	if kc.BlockCache != nil {
+		return kc.BlockCache
+	} else {
+		return DefaultBlockCache
+	}
+}
+
 type Locator struct {
 	Hash  string
 	Size  int      // -1 if data size is not known