common_datasource/
buffered_writer.rs

1// Copyright 2023 Greptime Team
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use arrow::record_batch::RecordBatch;
16use async_trait::async_trait;
17use datafusion::parquet::format::FileMetaData;
18
19use crate::error::Result;
20
21pub trait DfRecordBatchEncoder {
22    fn write(&mut self, batch: &RecordBatch) -> Result<()>;
23}
24
25#[async_trait]
26pub trait ArrowWriterCloser {
27    async fn close(mut self) -> Result<FileMetaData>;
28}