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Copier

Copier is used to copy object inside the storager.

Behavior#

  • Copy only copy one and only one object.
    • Service DON'T NEED to support copy a non-empty directory or copy files recursively.
    • User NEED to implement copy a non-empty directory and copy recursively by themself.
    • Copy a file to a directory SHOULD return ErrObjectModeInvalid.
  • Copy SHOULD NOT return an error as dst object exists.
    • Service that has native support for overwrite doesn't NEED to check the dst object exists or not.
    • Service that doesn't have native support for overwrite SHOULD check and delete the dst object if exists.
  • A successful copy opration should be complete, which means the dst object's content and metadata should be the same as src object.