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https://github.com/scottlamb/moonfire-nvr.git
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317a620e6e
* As discussed in #48, say "The Moonfire NVR Authors" at the top of every file rather than whoever created that file. Have one AUTHORS file listing everyone. * Consistently call it a "security camera network video recorder" rather than "security camera digital video recorder".
120 lines
4.6 KiB
Rust
120 lines
4.6 KiB
Rust
// This file is part of Moonfire NVR, a security camera network video recorder.
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// Copyright (C) 2018 The Moonfire NVR Authors
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// In addition, as a special exception, the copyright holders give
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// permission to link the code of portions of this program with the
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// OpenSSL library under certain conditions as described in each
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// individual source file, and distribute linked combinations including
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// the two.
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//
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// You must obey the GNU General Public License in all respects for all
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// of the code used other than OpenSSL. If you modify file(s) with this
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// exception, you may extend this exception to your version of the
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// file(s), but you are not obligated to do so. If you do not wish to do
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// so, delete this exception statement from your version. If you delete
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// this exception statement from all source files in the program, then
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// also delete it here.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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/// Upgrades a version 2 schema to a version 3 schema.
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/// Note that a version 2 schema is never actually used; so we know the upgrade from version 1 was
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/// completed, and possibly an upgrade from 2 to 3 is half-finished.
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use crate::db::{self, FromSqlUuid};
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use crate::dir;
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use failure::Error;
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use crate::schema;
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use protobuf::prelude::MessageField;
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use rusqlite::types::ToSql;
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use std::os::unix::io::AsRawFd;
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use std::sync::Arc;
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/// Opens the sample file dir.
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///
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/// Makes a couple simplifying assumptions valid for version 2:
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/// * there's only one dir.
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/// * it has a last completed open.
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fn open_sample_file_dir(tx: &rusqlite::Transaction) -> Result<Arc<dir::SampleFileDir>, Error> {
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let (p, s_uuid, o_id, o_uuid, db_uuid): (String, FromSqlUuid, i32, FromSqlUuid, FromSqlUuid) =
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tx.query_row(r#"
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select
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s.path, s.uuid, s.last_complete_open_id, o.uuid, m.uuid
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from
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sample_file_dir s
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join open o on (s.last_complete_open_id = o.id)
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cross join meta m
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"#, &[] as &[&dyn ToSql], |row| {
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Ok((row.get(0)?,
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row.get(1)?,
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row.get(2)?,
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row.get(3)?,
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row.get(4)?))
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})?;
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let mut meta = schema::DirMeta::default();
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meta.db_uuid.extend_from_slice(&db_uuid.0.as_bytes()[..]);
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meta.dir_uuid.extend_from_slice(&s_uuid.0.as_bytes()[..]);
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{
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let open = meta.last_complete_open.mut_message();
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open.id = o_id as u32;
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open.uuid.extend_from_slice(&o_uuid.0.as_bytes()[..]);
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}
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dir::SampleFileDir::open(&p, &meta)
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}
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pub fn run(_args: &super::Args, tx: &rusqlite::Transaction) -> Result<(), Error> {
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let d = open_sample_file_dir(&tx)?;
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let mut stmt = tx.prepare(r#"
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select
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composite_id,
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sample_file_uuid
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from
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recording_playback
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"#)?;
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let mut rows = stmt.query(&[] as &[&dyn ToSql])?;
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while let Some(row) = rows.next()? {
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let id = db::CompositeId(row.get(0)?);
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let sample_file_uuid: FromSqlUuid = row.get(1)?;
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let from_path = super::UuidPath::from(sample_file_uuid.0);
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let to_path = crate::dir::CompositeIdPath::from(id);
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if let Err(e) = nix::fcntl::renameat(Some(d.fd.as_raw_fd()), &from_path,
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Some(d.fd.as_raw_fd()), &to_path) {
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if e == nix::Error::Sys(nix::errno::Errno::ENOENT) {
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continue; // assume it was already moved.
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}
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Err(e)?;
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}
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}
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// These create statements match the schema.sql when version 3 was the latest.
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tx.execute_batch(r#"
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alter table recording_playback rename to old_recording_playback;
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create table recording_playback (
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composite_id integer primary key references recording (composite_id),
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video_index blob not null check (length(video_index) > 0)
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);
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insert into recording_playback
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select
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composite_id,
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video_index
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from
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old_recording_playback;
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drop table old_recording_playback;
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drop table old_recording;
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drop table old_camera;
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drop table old_video_sample_entry;
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"#)?;
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Ok(())
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}
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