common_meta/cache/table/
table_info.rs1use std::sync::Arc;
16
17use futures::future::BoxFuture;
18use moka::future::Cache;
19use snafu::{OptionExt, ResultExt};
20use store_api::storage::TableId;
21use table::metadata::TableInfo;
22
23use crate::cache::{CacheContainer, Initializer};
24use crate::error;
25use crate::error::Result;
26use crate::instruction::CacheIdent;
27use crate::key::table_info::{TableInfoManager, TableInfoManagerRef};
28use crate::kv_backend::KvBackendRef;
29
30pub type TableInfoCache = CacheContainer<TableId, Arc<TableInfo>, CacheIdent>;
32
33pub type TableInfoCacheRef = Arc<TableInfoCache>;
34
35pub fn new_table_info_cache(
37 name: String,
38 cache: Cache<TableId, Arc<TableInfo>>,
39 kv_backend: KvBackendRef,
40) -> TableInfoCache {
41 let table_info_manager = Arc::new(TableInfoManager::new(kv_backend));
42 let init = init_factory(table_info_manager);
43
44 CacheContainer::new(name, cache, Box::new(invalidator), init, filter)
45}
46
47fn init_factory(table_info_manager: TableInfoManagerRef) -> Initializer<TableId, Arc<TableInfo>> {
48 Arc::new(move |table_id| {
49 let table_info_manager = table_info_manager.clone();
50 Box::pin(async move {
51 let raw_table_info = table_info_manager
52 .get(*table_id)
53 .await?
54 .context(error::ValueNotExistSnafu {})?
55 .into_inner()
56 .table_info;
57 Ok(Some(Arc::new(
58 TableInfo::try_from(raw_table_info).context(error::ConvertRawTableInfoSnafu)?,
59 )))
60 })
61 })
62}
63
64fn invalidator<'a>(
65 cache: &'a Cache<TableId, Arc<TableInfo>>,
66 ident: &'a CacheIdent,
67) -> BoxFuture<'a, Result<()>> {
68 Box::pin(async move {
69 if let CacheIdent::TableId(table_id) = ident {
70 cache.invalidate(table_id).await
71 }
72 Ok(())
73 })
74}
75
76fn filter(ident: &CacheIdent) -> bool {
77 matches!(ident, CacheIdent::TableId(_))
78}
79
80#[cfg(test)]
81mod tests {
82 use std::collections::HashMap;
83 use std::sync::Arc;
84
85 use moka::future::CacheBuilder;
86
87 use super::*;
88 use crate::ddl::test_util::create_table::test_create_table_task;
89 use crate::key::table_route::TableRouteValue;
90 use crate::key::TableMetadataManager;
91 use crate::kv_backend::memory::MemoryKvBackend;
92
93 #[tokio::test]
94 async fn test_cache() {
95 let mem_kv = Arc::new(MemoryKvBackend::default());
96 let table_metadata_manager = TableMetadataManager::new(mem_kv.clone());
97 let cache = CacheBuilder::new(128).build();
98 let cache = new_table_info_cache("test".to_string(), cache, mem_kv.clone());
99
100 let result = cache.get(1024).await.unwrap();
101 assert!(result.is_none());
102 let task = test_create_table_task("my_table", 1024);
103 table_metadata_manager
104 .create_table_metadata(
105 task.table_info.clone(),
106 TableRouteValue::physical(vec![]),
107 HashMap::new(),
108 )
109 .await
110 .unwrap();
111 let table_info = cache.get(1024).await.unwrap().unwrap();
112 assert_eq!(*table_info, TableInfo::try_from(task.table_info).unwrap());
113
114 assert!(cache.contains_key(&1024));
115 cache
116 .invalidate(&[CacheIdent::TableId(1024)])
117 .await
118 .unwrap();
119 assert!(!cache.contains_key(&1024));
120 }
121}