risingwave_batch/task/
data_chunk_in_channel.rs

1// Copyright 2025 RisingWave Labs
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 risingwave_common::array::DataChunk;
16use risingwave_pb::data::PbDataChunk;
17use tokio::sync::OnceCell;
18
19#[derive(Debug, Clone)]
20pub(super) struct DataChunkInChannel {
21    data_chunk: DataChunk,
22    /// If the data chunk is only needed to transfer locally,
23    /// this field should not be initialized.
24    prost_data_chunk: OnceCell<PbDataChunk>,
25}
26
27impl DataChunkInChannel {
28    pub fn new(data_chunk: DataChunk) -> Self {
29        Self {
30            data_chunk,
31            prost_data_chunk: OnceCell::new(),
32        }
33    }
34
35    pub async fn to_protobuf(&self) -> PbDataChunk {
36        let prost_data_chunk = self
37            .prost_data_chunk
38            .get_or_init(|| async {
39                let res = self.data_chunk.clone().compact();
40                res.to_protobuf()
41            })
42            .await;
43        prost_data_chunk.clone()
44    }
45
46    pub fn into_data_chunk(self) -> DataChunk {
47        self.data_chunk
48    }
49
50    pub fn cardinality(&self) -> usize {
51        self.data_chunk.cardinality()
52    }
53}
risingwave_batch/task/data_chunk_in_channel.rs

risingwave_batch/task/
data_chunk_in_channel.rs
