operator/req_convert/delete/
table_to_region.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 api::v1::region::DeleteRequests as RegionDeleteRequests;
16use api::v1::Rows;
17use partition::manager::PartitionRuleManager;
18use table::metadata::TableInfo;
19use table::requests::DeleteRequest as TableDeleteRequest;
20
21use crate::error::Result;
22use crate::req_convert::common::partitioner::Partitioner;
23use crate::req_convert::common::{column_schema, row_count};
24
25pub struct TableToRegion<'a> {
26    table_info: &'a TableInfo,
27    partition_manager: &'a PartitionRuleManager,
28}
29
30impl<'a> TableToRegion<'a> {
31    pub fn new(table_info: &'a TableInfo, partition_manager: &'a PartitionRuleManager) -> Self {
32        Self {
33            table_info,
34            partition_manager,
35        }
36    }
37
38    pub async fn convert(&self, request: TableDeleteRequest) -> Result<RegionDeleteRequests> {
39        let row_count = row_count(&request.key_column_values)?;
40        let schema = column_schema(self.table_info, &request.key_column_values)?;
41        let rows = api::helper::vectors_to_rows(request.key_column_values.values(), row_count);
42        let rows = Rows { schema, rows };
43
44        let requests = Partitioner::new(self.partition_manager)
45            .partition_delete_requests(self.table_info, rows)
46            .await?;
47        Ok(RegionDeleteRequests { requests })
48    }
49}
50
51#[cfg(test)]
52mod tests {
53    use std::collections::HashMap;
54    use std::sync::Arc;
55
56    use api::v1::helper::tag_column_schema;
57    use api::v1::region::DeleteRequest as RegionDeleteRequest;
58    use api::v1::value::ValueData;
59    use api::v1::{ColumnDataType, Row, Value};
60    use common_catalog::consts::{DEFAULT_CATALOG_NAME, DEFAULT_SCHEMA_NAME};
61    use datatypes::vectors::{Int32Vector, VectorRef};
62    use store_api::storage::RegionId;
63
64    use super::*;
65    use crate::tests::{
66        create_partition_rule_manager, new_test_table_info, prepare_mocked_backend,
67    };
68
69    #[tokio::test]
70    async fn test_delete_request_table_to_region() {
71        // region to datanode placement:
72        // 1 -> 1
73        // 2 -> 2
74        // 3 -> 3
75        //
76        // region value ranges:
77        // 1 -> [50, max)
78        // 2 -> [10, 50)
79        // 3 -> (min, 10)
80
81        let backend = prepare_mocked_backend().await;
82        let partition_manager = create_partition_rule_manager(backend.clone()).await;
83        let table_info = new_test_table_info(1, "table_1", vec![0u32, 1, 2].into_iter());
84
85        let converter = TableToRegion::new(&table_info, &partition_manager);
86
87        let table_request = build_table_request(Arc::new(Int32Vector::from(vec![
88            Some(1),
89            None,
90            Some(11),
91            Some(101),
92        ])));
93
94        let region_requests = converter.convert(table_request).await.unwrap();
95        let mut region_id_to_region_requests = region_requests
96            .requests
97            .into_iter()
98            .map(|r| (r.region_id, r))
99            .collect::<HashMap<_, _>>();
100
101        let region_id = RegionId::new(1, 1).as_u64();
102        let region_request = region_id_to_region_requests.remove(&region_id).unwrap();
103        assert_eq!(
104            region_request,
105            build_region_request(vec![Some(101)], region_id)
106        );
107
108        let region_id = RegionId::new(1, 2).as_u64();
109        let region_request = region_id_to_region_requests.remove(&region_id).unwrap();
110        assert_eq!(
111            region_request,
112            build_region_request(vec![Some(11)], region_id)
113        );
114
115        let region_id = RegionId::new(1, 3).as_u64();
116        let region_request = region_id_to_region_requests.remove(&region_id).unwrap();
117        assert_eq!(
118            region_request,
119            build_region_request(vec![Some(1), None], region_id)
120        );
121    }
122
123    fn build_table_request(vector: VectorRef) -> TableDeleteRequest {
124        TableDeleteRequest {
125            catalog_name: DEFAULT_CATALOG_NAME.to_string(),
126            schema_name: DEFAULT_SCHEMA_NAME.to_string(),
127            table_name: "table_1".to_string(),
128            key_column_values: HashMap::from([("a".to_string(), vector)]),
129        }
130    }
131
132    fn build_region_request(rows: Vec<Option<i32>>, region_id: u64) -> RegionDeleteRequest {
133        RegionDeleteRequest {
134            region_id,
135            rows: Some(Rows {
136                schema: vec![tag_column_schema("a", ColumnDataType::Int32)],
137                rows: rows
138                    .into_iter()
139                    .map(|v| Row {
140                        values: vec![Value {
141                            value_data: v.map(ValueData::I32Value),
142                        }],
143                    })
144                    .collect(),
145            }),
146        }
147    }
148}
operator/req_convert/delete/table_to_region.rs

operator/req_convert/delete/
table_to_region.rs
