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::region::DeleteRequest as RegionDeleteRequest;
57    use api::v1::value::ValueData;
58    use api::v1::{ColumnDataType, ColumnSchema, Row, SemanticType, Value};
59    use common_catalog::consts::{DEFAULT_CATALOG_NAME, DEFAULT_SCHEMA_NAME};
60    use datatypes::vectors::{Int32Vector, VectorRef};
61    use store_api::storage::RegionId;
62
63    use super::*;
64    use crate::tests::{
65        create_partition_rule_manager, new_test_table_info, prepare_mocked_backend,
66    };
67
68    #[tokio::test]
69    async fn test_delete_request_table_to_region() {
70        // region to datanode placement:
71        // 1 -> 1
72        // 2 -> 2
73        // 3 -> 3
74        //
75        // region value ranges:
76        // 1 -> [50, max)
77        // 2 -> [10, 50)
78        // 3 -> (min, 10)
79
80        let backend = prepare_mocked_backend().await;
81        let partition_manager = create_partition_rule_manager(backend.clone()).await;
82        let table_info = new_test_table_info(1, "table_1", vec![0u32, 1, 2].into_iter());
83
84        let converter = TableToRegion::new(&table_info, &partition_manager);
85
86        let table_request = build_table_request(Arc::new(Int32Vector::from(vec![
87            Some(1),
88            None,
89            Some(11),
90            Some(101),
91        ])));
92
93        let region_requests = converter.convert(table_request).await.unwrap();
94        let mut region_id_to_region_requests = region_requests
95            .requests
96            .into_iter()
97            .map(|r| (r.region_id, r))
98            .collect::<HashMap<_, _>>();
99
100        let region_id = RegionId::new(1, 1).as_u64();
101        let region_request = region_id_to_region_requests.remove(&region_id).unwrap();
102        assert_eq!(
103            region_request,
104            build_region_request(vec![Some(101)], region_id)
105        );
106
107        let region_id = RegionId::new(1, 2).as_u64();
108        let region_request = region_id_to_region_requests.remove(&region_id).unwrap();
109        assert_eq!(
110            region_request,
111            build_region_request(vec![Some(11)], region_id)
112        );
113
114        let region_id = RegionId::new(1, 3).as_u64();
115        let region_request = region_id_to_region_requests.remove(&region_id).unwrap();
116        assert_eq!(
117            region_request,
118            build_region_request(vec![Some(1), None], region_id)
119        );
120    }
121
122    fn build_table_request(vector: VectorRef) -> TableDeleteRequest {
123        TableDeleteRequest {
124            catalog_name: DEFAULT_CATALOG_NAME.to_string(),
125            schema_name: DEFAULT_SCHEMA_NAME.to_string(),
126            table_name: "table_1".to_string(),
127            key_column_values: HashMap::from([("a".to_string(), vector)]),
128        }
129    }
130
131    fn build_region_request(rows: Vec<Option<i32>>, region_id: u64) -> RegionDeleteRequest {
132        RegionDeleteRequest {
133            region_id,
134            rows: Some(Rows {
135                schema: vec![ColumnSchema {
136                    column_name: "a".to_string(),
137                    datatype: ColumnDataType::Int32 as i32,
138                    semantic_type: SemanticType::Tag as i32,
139                    ..Default::default()
140                }],
141                rows: rows
142                    .into_iter()
143                    .map(|v| Row {
144                        values: vec![Value {
145                            value_data: v.map(ValueData::I32Value),
146                        }],
147                    })
148                    .collect(),
149            }),
150        }
151    }
152}
operator/req_convert/delete/table_to_region.rs

operator/req_convert/delete/
table_to_region.rs
