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Signed-off-by: tabVersion <[email protected]> Co-authored-by: Bohan Zhang <[email protected]> Co-authored-by: tabversion <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| // Copyright 2024 RisingWave Labs | ||
| // | ||
| // Licensed 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. | ||
|
|
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| use risingwave_common::catalog::Schema; | ||
| use risingwave_common::types::DataType; | ||
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| use super::RowEncoder; | ||
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| pub struct BytesEncoder { | ||
| pub schema: Schema, | ||
| // the column must contain only one element | ||
| pub col_index: usize, | ||
| } | ||
|
|
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| impl BytesEncoder { | ||
| pub fn new(schema: Schema, col_index: usize) -> Self { | ||
| Self { schema, col_index } | ||
| } | ||
| } | ||
|
|
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| impl RowEncoder for BytesEncoder { | ||
| type Output = Vec<u8>; | ||
|
|
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| fn schema(&self) -> &risingwave_common::catalog::Schema { | ||
| &self.schema | ||
| } | ||
|
|
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| fn col_indices(&self) -> Option<&[usize]> { | ||
| Some(std::slice::from_ref(&self.col_index)) | ||
| } | ||
|
|
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| fn encode_cols( | ||
| &self, | ||
| row: impl risingwave_common::row::Row, | ||
| col_indices: impl Iterator<Item = usize>, | ||
| ) -> crate::sink::Result<Self::Output> { | ||
| // It is guaranteed by the caller that col_indices contains only one element | ||
| let mut result = Vec::new(); | ||
| for col_index in col_indices { | ||
| let datum = row.datum_at(col_index); | ||
| let data_type = &self.schema.fields[col_index].data_type; | ||
| if data_type == &DataType::Bytea { | ||
| if let Some(scalar_impl) = datum { | ||
| result = scalar_impl.into_bytea().to_vec(); | ||
| } else { | ||
| result = vec![]; | ||
| } | ||
| } else { | ||
| return Err(crate::sink::SinkError::Encode(format!( | ||
| "Unsupported data type: expected bytea, got {}", | ||
| data_type | ||
| ))); | ||
| } | ||
| } | ||
|
|
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| Ok(result) | ||
| } | ||
| } | ||
|
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| #[cfg(test)] | ||
| mod test { | ||
| use risingwave_common::catalog::Field; | ||
| use risingwave_common::row::OwnedRow; | ||
| use risingwave_common::types::ScalarImpl; | ||
|
|
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| use super::*; | ||
|
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| #[test] | ||
| fn test_bytes_encoder_ser_bytes() { | ||
| let schema = Schema::new(vec![Field::with_name(DataType::Bytea, "col1")]); | ||
| let encoder = BytesEncoder::new(schema, 0); | ||
|
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| let row = OwnedRow::new(vec![Some(ScalarImpl::Bytea(b"some_bytes".to_vec().into()))]); | ||
| assert_eq!( | ||
| encoder.encode_cols(&row, std::iter::once(0)).unwrap(), | ||
| b"some_bytes".to_vec() | ||
| ); | ||
|
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| let row = OwnedRow::new(vec![None]); | ||
| assert_eq!( | ||
| encoder.encode_cols(&row, std::iter::once(0)).unwrap(), | ||
| Vec::<u8>::new() | ||
| ); | ||
|
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| let schema = Schema::new(vec![Field::with_name(DataType::Int16, "col1")]); | ||
| let encoder = BytesEncoder::new(schema, 0); | ||
| let row = OwnedRow::new(vec![Some(ScalarImpl::Int16(123))]); | ||
| assert!(encoder.encode_cols(&row, std::iter::once(0)).is_err()); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -22,6 +22,7 @@ use crate::sink::Result; | |
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| mod avro; | ||
| mod bson; | ||
| pub mod bytes; | ||
| mod json; | ||
| mod proto; | ||
| pub mod template; | ||
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