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Ben McClelland
c81403fe90
Closes #511. This adds an abstraction layer to the metadata storage to allow for future non-xattr metadata storage implementations.
27 lines
1.2 KiB
Go
27 lines
1.2 KiB
Go
package meta
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// MetadataStorer defines the interface for managing metadata.
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// When object == "", the operation is on the bucket.
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type MetadataStorer interface {
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// RetrieveAttribute retrieves the value of a specific attribute for an object or a bucket.
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// Returns the value of the attribute, or an error if the attribute does not exist.
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RetrieveAttribute(bucket, object, attribute string) ([]byte, error)
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// StoreAttribute stores the value of a specific attribute for an object or a bucket.
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// If attribute already exists, new attribute should replace existing.
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// Returns an error if the operation fails.
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StoreAttribute(bucket, object, attribute string, value []byte) error
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// DeleteAttribute removes the value of a specific attribute for an object or a bucket.
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// Returns an error if the operation fails.
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DeleteAttribute(bucket, object, attribute string) error
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// ListAttributes lists all attributes for an object or a bucket.
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// Returns list of attribute names, or an error if the operation fails.
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ListAttributes(bucket, object string) ([]string, error)
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// DeleteAttributes removes all attributes for an object or a bucket.
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// Returns an error if the operation fails.
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DeleteAttributes(bucket, object string) error
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}
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