arrow_stream_to_file/
arrow-stream-to-file.rs

1// Licensed to the Apache Software Foundation (ASF) under one
2// or more contributor license agreements.  See the NOTICE file
3// distributed with this work for additional information
4// regarding copyright ownership.  The ASF licenses this file
5// to you under the Apache License, Version 2.0 (the
6// "License"); you may not use this file except in compliance
7// with the License.  You may obtain a copy of the License at
8//
9//   http://www.apache.org/licenses/LICENSE-2.0
10//
11// Unless required by applicable law or agreed to in writing,
12// software distributed under the License is distributed on an
13// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
14// KIND, either express or implied.  See the License for the
15// specific language governing permissions and limitations
16// under the License.
17
18//! Converts an Arrow IPC stream to an Arrow IPC file.
19
20// The unused_crate_dependencies lint does not work well for crates defining additional examples/bin targets
21#![allow(unused_crate_dependencies)]
22
23use std::io;
24
25use arrow::error::Result;
26use arrow::ipc::reader::StreamReader;
27use arrow::ipc::writer::FileWriter;
28
29fn main() -> Result<()> {
30    let mut arrow_stream_reader = StreamReader::try_new(io::stdin(), None)?;
31    let schema = arrow_stream_reader.schema();
32
33    let mut writer = FileWriter::try_new(io::stdout(), &schema)?;
34
35    arrow_stream_reader.try_for_each(|batch| writer.write(&batch?))?;
36    writer.finish()?;
37
38    Ok(())
39}
arrow_stream_to_file/arrow-stream-to-file.rs

arrow_stream_to_file/
arrow-stream-to-file.rs
