core/services/ftp/src/err.rs

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

use suppaftp::FtpError;
use suppaftp::Status;

use opendal_core::Error;
use opendal_core::ErrorKind;

pub(super) fn format_ftp_error(err: FtpError) -> Error {
    let (kind, retryable) = match err {
        // Allow retry for error
        //
        // `{ status: NotAvailable, body: "421 There are too many connections from your internet address." }`
        FtpError::UnexpectedResponse(ref resp) if resp.status == Status::NotAvailable => {
            (ErrorKind::Unexpected, true)
        }
        FtpError::UnexpectedResponse(ref resp) if resp.status == Status::FileUnavailable => {
            (ErrorKind::NotFound, false)
        }
        // Allow retry bad response.
        FtpError::BadResponse => (ErrorKind::Unexpected, true),
        _ => (ErrorKind::Unexpected, false),
    };

    let mut err = Error::new(kind, "ftp error").set_source(err);

    if retryable {
        err = err.set_temporary();
    }

    err
}