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/*
* Copyright (c) 2023 Stalwart Labs Ltd.
*
* This file is part of the Stalwart Mail Server.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use r2d2::Pool;
use tokio::sync::oneshot;
use utils::{
config::{utils::AsKey, Config},
UnwrapFailure,
};
use crate::{
SUBSPACE_BITMAPS, SUBSPACE_BLOBS, SUBSPACE_COUNTERS, SUBSPACE_INDEXES, SUBSPACE_LOGS,
SUBSPACE_VALUES,
};
use super::{pool::SqliteConnectionManager, SqliteStore};
impl SqliteStore {
pub fn open(config: &Config, prefix: impl AsKey) -> crate::Result<Self> {
let prefix = prefix.as_key();
let db = Self {
conn_pool: Pool::builder()
.max_size(
config
.property((&prefix, "pool.max-connections"))?
.unwrap_or_else(|| (num_cpus::get() * 4) as u32),
)
.build(
SqliteConnectionManager::file(
config
.value_require((&prefix, "path"))
.failed("Invalid configuration file"),
)
.with_init(|c| {
c.execute_batch(concat!(
"PRAGMA journal_mode = WAL; ",
"PRAGMA synchronous = NORMAL; ",
"PRAGMA temp_store = memory;",
"PRAGMA busy_timeout = 30000;"
))
}),
)?,
worker_pool: rayon::ThreadPoolBuilder::new()
.num_threads(
config
.property::<usize>((&prefix, "pool.workers"))?
.filter(|v| *v > 0)
.unwrap_or_else(num_cpus::get),
)
.build()
.map_err(|err| {
crate::Error::InternalError(format!("Failed to build worker pool: {}", err))
})?,
};
db.create_tables()?;
Ok(db)
}
#[cfg(feature = "test_mode")]
pub fn open_memory() -> crate::Result<Self> {
let db = Self {
conn_pool: Pool::builder()
.max_size(1)
.build(SqliteConnectionManager::memory())?,
worker_pool: rayon::ThreadPoolBuilder::new()
.num_threads(num_cpus::get())
.build()
.map_err(|err| {
crate::Error::InternalError(format!("Failed to build worker pool: {}", err))
})?,
};
db.create_tables()?;
Ok(db)
}
pub(super) fn create_tables(&self) -> crate::Result<()> {
let conn = self.conn_pool.get()?;
for table in [SUBSPACE_VALUES, SUBSPACE_LOGS, SUBSPACE_BLOBS] {
let table = char::from(table);
conn.execute(
&format!(
"CREATE TABLE IF NOT EXISTS {table} (
k BLOB PRIMARY KEY,
v BLOB NOT NULL
)"
),
[],
)?;
}
for table in [SUBSPACE_INDEXES, SUBSPACE_BITMAPS] {
let table = char::from(table);
conn.execute(
&format!(
"CREATE TABLE IF NOT EXISTS {table} (
k BLOB PRIMARY KEY
)"
),
[],
)?;
}
conn.execute(
&format!(
"CREATE TABLE IF NOT EXISTS {} (
k BLOB PRIMARY KEY,
v INTEGER NOT NULL DEFAULT 0
)",
char::from(SUBSPACE_COUNTERS)
),
[],
)?;
Ok(())
}
pub async fn spawn_worker<U, V>(&self, mut f: U) -> crate::Result<V>
where
U: FnMut() -> crate::Result<V> + Send,
V: Sync + Send + 'static,
{
let (tx, rx) = oneshot::channel();
self.worker_pool.scope(|s| {
s.spawn(|_| {
tx.send(f()).ok();
});
});
match rx.await {
Ok(result) => result,
Err(err) => Err(crate::Error::InternalError(format!(
"Worker thread failed: {}",
err
))),
}
}
}
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