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Move back to mutex in sql.rs

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This commit is contained in:
Ethan O'Brien 2024-11-21 11:13:54 -06:00
parent 7493724cd7
commit b21deaee5f
1 changed files with 57 additions and 80 deletions
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67
src/sql.rs
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@ -4,9 +4,24 @@ use json::{JsonValue, array};
use crate::router::clear_rate::Live; use crate::router::clear_rate::Live;
macro_rules! lock_onto_mutex {
($mutex:expr) => {{
loop {
match $mutex.lock() {
Ok(value) => {
break value;
}
Err(_) => {
$mutex.clear_poison();
std::thread::sleep(std::time::Duration::from_millis(10));
}
}
}
}};
}
pub struct SQLite { pub struct SQLite {
engine: Mutex<Connection>, engine: Mutex<Connection>
sleep_duration: u64
} }
impl SQLite { impl SQLite {
@ -14,30 +29,17 @@ impl SQLite {
let conn = Connection::open(crate::get_data_path(path)).unwrap(); let conn = Connection::open(crate::get_data_path(path)).unwrap();
conn.execute("PRAGMA foreign_keys = ON;", ()).unwrap(); conn.execute("PRAGMA foreign_keys = ON;", ()).unwrap();
let instance = SQLite { let instance = SQLite {
engine: Mutex::new(conn), engine: Mutex::new(conn)
sleep_duration: 10
}; };
setup(&instance); setup(&instance);
instance instance
} }
pub fn lock_and_exec(&self, command: &str, args: &[&dyn ToSql]) { pub fn lock_and_exec(&self, command: &str, args: &[&dyn ToSql]) {
loop { let conn = lock_onto_mutex!(self.engine);
match self.engine.lock() {
Ok(conn) => {
conn.execute(command, args).unwrap(); conn.execute(command, args).unwrap();
return;
}
Err(_) => {
self.engine.clear_poison();
std::thread::sleep(std::time::Duration::from_millis(self.sleep_duration));
}
}
}
} }
pub fn lock_and_select(&self, command: &str, args: &[&dyn ToSql]) -> Result<String, rusqlite::Error> { pub fn lock_and_select(&self, command: &str, args: &[&dyn ToSql]) -> Result<String, rusqlite::Error> {
loop { let conn = lock_onto_mutex!(self.engine);
match self.engine.lock() {
Ok(conn) => {
let mut stmt = conn.prepare(command)?; let mut stmt = conn.prepare(command)?;
return stmt.query_row(args, |row| { return stmt.query_row(args, |row| {
match row.get::<usize, i64>(0) { match row.get::<usize, i64>(0) {
@ -46,17 +48,8 @@ impl SQLite {
} }
}); });
} }
Err(_) => {
self.engine.clear_poison();
std::thread::sleep(std::time::Duration::from_millis(self.sleep_duration));
}
}
}
}
pub fn lock_and_select_all(&self, command: &str, args: &[&dyn ToSql]) -> Result<JsonValue, rusqlite::Error> { pub fn lock_and_select_all(&self, command: &str, args: &[&dyn ToSql]) -> Result<JsonValue, rusqlite::Error> {
loop { let conn = lock_onto_mutex!(self.engine);
match self.engine.lock() {
Ok(conn) => {
let mut stmt = conn.prepare(command)?; let mut stmt = conn.prepare(command)?;
let map = stmt.query_map(args, |row| { let map = stmt.query_map(args, |row| {
match row.get::<usize, i64>(0) { match row.get::<usize, i64>(0) {
@ -74,17 +67,8 @@ impl SQLite {
} }
return Ok(rv); return Ok(rv);
} }
Err(_) => {
self.engine.clear_poison();
std::thread::sleep(std::time::Duration::from_millis(self.sleep_duration));
}
}
}
}
pub fn get_live_data(&self, id: i64) -> Result<Live, rusqlite::Error> { pub fn get_live_data(&self, id: i64) -> Result<Live, rusqlite::Error> {
loop { let conn = lock_onto_mutex!(self.engine);
match self.engine.lock() {
Ok(conn) => {
let mut stmt = conn.prepare("SELECT * FROM lives WHERE live_id=?1")?; let mut stmt = conn.prepare("SELECT * FROM lives WHERE live_id=?1")?;
return stmt.query_row(params!(id), |row| { return stmt.query_row(params!(id), |row| {
Ok(Live { Ok(Live {
@ -100,13 +84,6 @@ impl SQLite {
}) })
}); });
} }
Err(_) => {
self.engine.clear_poison();
std::thread::sleep(std::time::Duration::from_millis(self.sleep_duration));
}
}
}
}
pub fn create_store_v2(&self, table: &str) { pub fn create_store_v2(&self, table: &str) {
self.lock_and_exec(table, params!()); self.lock_and_exec(table, params!());
} }