1use rusqlite::{Connection, ToSql};
5
6use crate::{
7 SqliteConfig,
8 error::{SqliteError, SqliteResult},
9};
10
11pub fn apply(conn: &Connection, config: &SqliteConfig) -> SqliteResult<()> {
12 set(conn, "page_size", config.page_size)?;
13 set(conn, "auto_vacuum", "INCREMENTAL")?;
14 set(conn, "journal_mode", config.journal_mode.as_str())?;
15 set(conn, "synchronous", config.synchronous_mode.as_str())?;
16 set(conn, "temp_store", config.temp_store.as_str())?;
17 set(conn, "cache_size", -(config.cache_size as i32))?;
18 set(conn, "wal_autocheckpoint", config.wal_autocheckpoint)?;
19 set(conn, "mmap_size", config.mmap_size as i64)?;
20 conn.set_prepared_statement_cache_capacity(config.prepared_statement_cache_capacity as usize);
21 Ok(())
22}
23
24pub fn incremental_vacuum(conn: &Connection) -> SqliteResult<()> {
25 conn.pragma_query(None, "incremental_vacuum", |_| Ok(())).map_err(|source| SqliteError::Execute {
26 statement: "PRAGMA incremental_vacuum".into(),
27 source,
28 })?;
29 conn.pragma(None, "wal_checkpoint", "TRUNCATE", |_| Ok(())).map_err(|source| SqliteError::Execute {
30 statement: "PRAGMA wal_checkpoint(TRUNCATE)".into(),
31 source,
32 })?;
33 Ok(())
34}
35
36pub fn shrink_memory(conn: &Connection) -> SqliteResult<()> {
37 set(conn, "shrink_memory", 0)
38}
39
40pub fn shutdown(conn: &Connection) -> SqliteResult<()> {
41 set(conn, "wal_checkpoint", "TRUNCATE")?;
42 set(conn, "cache_size", 0)?;
43 Ok(())
44}
45
46fn set<V: ToSql>(conn: &Connection, name: &str, value: V) -> SqliteResult<()> {
47 conn.pragma_update(None, name, value).map_err(|source| SqliteError::Pragma {
48 name: name.into(),
49 source,
50 })
51}