operator.object("/admin/data/") error

[BohuTANG]

Code

https://github.com/datafuselabs/databend/pull/4328/files#diff-1d363f761ee4a5fea885df6438f195e158da0d4adcd5e5c7d7ecfc0f03b2e019R87

// endpoint:http://127.0.0.1:9900, bucket:testbucket, path:/admin/data/
 let operator = Self::open(s3_endpoint, s3_bucket, aws_key_id, aws_secret_key).await?; -- 
 let mode = operator.object(path).metadata().await?.mode(); 

Error

2022-03-04T12:33:56.044309Z ERROR databend_query::servers::mysql::writers::query_result_writer: OnQuery Error: Code: 3006, displayText = Object { kind: ObjectNotExist, op: "stat", path: "/admin/data/", source: NotFound

Caused by:
    NotFound }.

   0: common_exception::exception_code::<impl common_exception::exception::ErrorCode>::DalError
             at common/exception/src/exception_code.rs:36:66
   1: common_exception::exception_into::<impl core::convert::From<opendal::error::Error> for common_exception::exception::ErrorCode>::from
             at common/exception/src/exception_into.rs:235:9
   2: <core::result::Result<T,F> as core::ops::try_trait::FromResidual<core::result::Result<core::convert::Infallible,E>>>::from_residual
             at /rustc/4ce3749235fc31d15ebd444b038a9877e8c700d7/library/core/src/result.rs:2064:27
   3: common_io::files::file_s3::S3File::list::{{closure}}
             at common/io/src/files/file_s3.rs:87:20
   4: <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll
             at /rustc/4ce3749235fc31d15ebd444b038a9877e8c700d7/library/core/src/future/mod.rs:91:19
   5: databend_query::interpreters::interpreter_copy::CopyInterpreter::list_files::{{closure}}
             at query/src/interpreters/interpreter_copy.rs:74:81
   6: <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll
             at /rustc/4ce3749235fc31d15ebd444b038a9877e8c700d7/library/core/src/future/mod.rs:91:19
   7: <databend_query::interpreters::interpreter_copy::CopyInterpreter as databend_query::interpreters::interpreter::Interpreter>::execute::{{closure}}::{{closure}}
             at query/src/interpreters/interpreter_copy.rs:162:38
   8: <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll
             at /rustc/4ce3749235fc31d15ebd444b038a9877e8c700d7/library/core/src/future/mod.rs:91:19
   9: <databend_query::interpreters::interpreter_copy::CopyInterpreter as databend_query::interpreters::interpreter::Interpreter>::execute::{{closure}}

Question

If we want to get all the files under a path, but the path maybe a file, so we should check the object is DIR or FILE.
How we do it?

[Xuanwo]

Should be fixed in v0.2