mirror of
https://github.com/scottlamb/moonfire-nvr.git
synced 2025-01-05 20:13:22 -05:00
dd66c7b0dd
Besides being more clear about what belongs to which, this helps with docker caching. The server and ui parts are only rebuilt when their respective subdirectories change. Extend this a bit further by making the webpack build not depend on the target architecture. And adding cache dirs so parts of the server and ui build process can be reused when layer-wide caching fails.
88 lines
3.7 KiB
Rust
88 lines
3.7 KiB
Rust
// This file is part of Moonfire NVR, a security camera network video recorder.
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// Copyright (C) 2016 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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use db::dir;
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use failure::{Error, Fail};
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use nix::fcntl::FlockArg;
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use rusqlite;
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use std::path::Path;
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pub mod check;
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pub mod config;
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pub mod login;
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pub mod init;
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pub mod run;
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pub mod sql;
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pub mod ts;
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pub mod upgrade;
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#[derive(Copy, Clone, PartialEq, Eq)]
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enum OpenMode {
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ReadOnly,
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ReadWrite,
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Create
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}
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/// Locks the directory without opening the database.
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/// The returned `dir::Fd` holds the lock and should be kept open as long as the `Connection` is.
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fn open_dir(db_dir: &Path, mode: OpenMode) -> Result<dir::Fd, Error> {
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let dir = dir::Fd::open(db_dir, mode == OpenMode::Create)
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.map_err(|e| e.context(if e == nix::Error::Sys(nix::errno::Errno::ENOENT) {
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format!("db dir {} not found; try running moonfire-nvr init",
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db_dir.display())
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} else {
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format!("unable to open db dir {}: {}", db_dir.display(), &e)
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}))?;
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let ro = mode == OpenMode::ReadOnly;
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dir.lock(if ro { FlockArg::LockSharedNonblock } else { FlockArg::LockExclusiveNonblock })
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.map_err(|e| e.context(format!("db dir {} already in use; can't get {} lock",
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db_dir.display(), if ro { "shared" } else { "exclusive" })))?;
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Ok(dir)
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}
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/// Locks and opens the database.
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/// The returned `dir::Fd` holds the lock and should be kept open as long as the `Connection` is.
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fn open_conn(db_dir: &Path, mode: OpenMode) -> Result<(dir::Fd, rusqlite::Connection), Error> {
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let dir = open_dir(db_dir, mode)?;
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let conn = rusqlite::Connection::open_with_flags(
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db_dir.join("db"),
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match mode {
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OpenMode::ReadOnly => rusqlite::OpenFlags::SQLITE_OPEN_READ_ONLY,
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OpenMode::ReadWrite => rusqlite::OpenFlags::SQLITE_OPEN_READ_WRITE,
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OpenMode::Create => {
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rusqlite::OpenFlags::SQLITE_OPEN_READ_WRITE | rusqlite::OpenFlags::SQLITE_OPEN_CREATE
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},
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} |
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// rusqlite::Connection is not Sync, so there's no reason to tell SQLite3 to use the
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// serialized threading mode.
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rusqlite::OpenFlags::SQLITE_OPEN_NO_MUTEX)?;
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Ok((dir, conn))
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}
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