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Allow caching on single PutObject (#8100)

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This commit is contained in:
poornas
2019-09-05 07:20:16 -07:00
committed by kannappanr
parent 496fba3e9a
commit 29f64355ce
4 changed files with 116 additions and 2 deletions
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22
cmd/disk-cache-backend.go
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@@ -333,6 +333,28 @@ func (c *diskCache) saveMetadata(ctx context.Context, bucket, object string, met
return err
}
// updates ETag in cache metadata file to the backend ETag.
func (c *diskCache) updateETag(ctx context.Context, bucket, object string, etag string) error {
metaPath := path.Join(getCacheSHADir(c.dir, bucket, object), cacheMetaJSONFile)
f, err := os.OpenFile(metaPath, os.O_RDWR, 0)
if err != nil {
return err
}
defer f.Close()
meta := &cacheMeta{Version: cacheMetaVersion}
if err := jsonLoad(f, meta); err != nil {
return err
}
meta.Meta["etag"] = etag
jsonData, err := json.Marshal(meta)
if err != nil {
return err
}
_, err = f.Write(jsonData)
return err
}
// Backend metadata could have changed through server side copy - reset cache metadata if that is the case
func (c *diskCache) updateMetadataIfChanged(ctx context.Context, bucket, object string, bkObjectInfo, cacheObjInfo ObjectInfo) error {