mirror of
https://github.com/scottlamb/moonfire-nvr.git
synced 2024-12-27 15:45:55 -05:00
c0da1ef880
--features=bundled enables -DSQLITE_DEFAULT_FOREIGN_KEYS=1, and so some operations have to be done in the proper order. * enable foreign key enforcement all the time, so I test this more reliably. * reorder some parts of the v1->v3 order. foreign key enforcement is immediate (rather than deferred) by default. and ensure old_recording_playback isn't left with a dangling reference to old_recording at the v2 stage. Instead, wait until v3 to delete tables it depends on.
111 lines
4.4 KiB
Rust
111 lines
4.4 KiB
Rust
// This file is part of Moonfire NVR, a security camera digital video recorder.
|
|
// Copyright (C) 2016 Scott Lamb <slamb@slamb.org>
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// In addition, as a special exception, the copyright holders give
|
|
// permission to link the code of portions of this program with the
|
|
// OpenSSL library under certain conditions as described in each
|
|
// individual source file, and distribute linked combinations including
|
|
// the two.
|
|
//
|
|
// You must obey the GNU General Public License in all respects for all
|
|
// of the code used other than OpenSSL. If you modify file(s) with this
|
|
// exception, you may extend this exception to your version of the
|
|
// file(s), but you are not obligated to do so. If you do not wish to do
|
|
// so, delete this exception statement from your version. If you delete
|
|
// this exception statement from all source files in the program, then
|
|
// also delete it here.
|
|
//
|
|
// 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 General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
/// Upgrades the database schema.
|
|
///
|
|
/// See `guide/schema.md` for more information.
|
|
|
|
use db;
|
|
use failure::Error;
|
|
use rusqlite;
|
|
|
|
mod v0_to_v1;
|
|
mod v1_to_v2;
|
|
mod v2_to_v3;
|
|
|
|
const UPGRADE_NOTES: &'static str =
|
|
concat!("upgraded using moonfire-db ", env!("CARGO_PKG_VERSION"));
|
|
|
|
#[derive(Debug)]
|
|
pub struct Args<'a> {
|
|
pub flag_sample_file_dir: Option<&'a str>,
|
|
pub flag_preset_journal: &'a str,
|
|
pub flag_no_vacuum: bool,
|
|
}
|
|
|
|
fn set_journal_mode(conn: &rusqlite::Connection, requested: &str) -> Result<(), Error> {
|
|
assert!(!requested.contains(';')); // quick check for accidental sql injection.
|
|
let actual = conn.query_row(&format!("pragma journal_mode = {}", requested), &[],
|
|
|row| row.get_checked::<_, String>(0))??;
|
|
info!("...database now in journal_mode {} (requested {}).", actual, requested);
|
|
Ok(())
|
|
}
|
|
|
|
pub fn run(args: &Args, conn: &mut rusqlite::Connection) -> Result<(), Error> {
|
|
let upgraders = [
|
|
v0_to_v1::run,
|
|
v1_to_v2::run,
|
|
v2_to_v3::run,
|
|
];
|
|
|
|
{
|
|
assert_eq!(upgraders.len(), db::EXPECTED_VERSION as usize);
|
|
let old_ver =
|
|
conn.query_row("select max(id) from version", &[], |row| row.get_checked(0))??;
|
|
if old_ver > db::EXPECTED_VERSION {
|
|
bail!("Database is at version {}, later than expected {}",
|
|
old_ver, db::EXPECTED_VERSION);
|
|
} else if old_ver < 0 {
|
|
bail!("Database is at negative version {}!", old_ver);
|
|
}
|
|
info!("Upgrading database from version {} to version {}...", old_ver, db::EXPECTED_VERSION);
|
|
set_journal_mode(&conn, args.flag_preset_journal).unwrap();
|
|
for ver in old_ver .. db::EXPECTED_VERSION {
|
|
info!("...from version {} to version {}", ver, ver + 1);
|
|
let tx = conn.transaction()?;
|
|
upgraders[ver as usize](&args, &tx)?;
|
|
tx.execute(r#"
|
|
insert into version (id, unix_time, notes)
|
|
values (?, cast(strftime('%s', 'now') as int32), ?)
|
|
"#, &[&(ver + 1), &UPGRADE_NOTES])?;
|
|
tx.commit()?;
|
|
}
|
|
}
|
|
|
|
// Enforce foreign keys. This is on by default with --features=bundled (as rusqlite
|
|
// compiles the SQLite3 amalgamation with -DSQLITE_DEFAULT_FOREIGN_KEYS=1). Ensure it's
|
|
// always on. Note that our foreign keys are immediate rather than deferred, so we have to
|
|
// be careful about the order of operations during the upgrade.
|
|
conn.execute("pragma foreign_keys = on", &[])?;
|
|
|
|
// WAL is the preferred journal mode for normal operation; it reduces the number of syncs
|
|
// without compromising safety.
|
|
set_journal_mode(&conn, "wal").unwrap();
|
|
if !args.flag_no_vacuum {
|
|
info!("...vacuuming database after upgrade.");
|
|
conn.execute_batch(r#"
|
|
pragma page_size = 16384;
|
|
vacuum;
|
|
"#).unwrap();
|
|
}
|
|
info!("...done.");
|
|
Ok(())
|
|
}
|