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read from alternative replica

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related to https://github.com/chrislusf/seaweedfs/issues/1512
This commit is contained in:
Chris Lu
2020-10-07 22:49:04 -07:00
parent da4edf3651
commit a8624c2e4f
12 changed files with 185 additions and 150 deletions
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21
weed/filer/filechunk_manifest.go
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@@ -84,21 +84,26 @@ func ResolveOneChunkManifest(lookupFileIdFn LookupFileIdFunctionType, chunk *fil
// TODO fetch from cache for weed mount?
func fetchChunk(lookupFileIdFn LookupFileIdFunctionType, fileId string, cipherKey []byte, isGzipped bool) ([]byte, error) {
urlString, err := lookupFileIdFn(fileId)
urlStrings, err := lookupFileIdFn(fileId)
if err != nil {
glog.Errorf("operation LookupFileId %s failed, err: %v", fileId, err)
return nil, err
}
var buffer bytes.Buffer
err = util.ReadUrlAsStream(urlString, cipherKey, isGzipped, true, 0, 0, func(data []byte) {
buffer.Write(data)
})
if err != nil {
glog.V(0).Infof("read %s failed, err: %v", fileId, err)
return nil, err
for _, urlString := range urlStrings {
err = util.ReadUrlAsStream(urlString, cipherKey, isGzipped, true, 0, 0, func(data []byte) {
buffer.Write(data)
})
if err != nil {
glog.V(0).Infof("read %s failed, err: %v", fileId, err)
buffer.Reset()
} else {
break
}
}
return buffer.Bytes(), nil
return buffer.Bytes(), err
}
func MaybeManifestize(saveFunc SaveDataAsChunkFunctionType, inputChunks []*filer_pb.FileChunk) (chunks []*filer_pb.FileChunk, err error) {