oxedyne/fe2o3 — fe2o3_o3db_sync/src/file/live.rs

1.2 KiB, 9 runs

created by r1870400018:795, which is this file's identity for as long as the history lasts, whatever it is later renamed to

1	use crate::{
2	prelude::*,
3	file::floc::FileNum,
4	};
5
6
7	use std::{
8	fs::File,
9	path::PathBuf,
10	};
11
12	#[derive(Debug, Default)]
13	pub struct LiveFile {
14	pub path: PathBuf,
15	pub file: Option<File>,
16	pub size: u64,
17	}
18
19	impl LiveFile {
20
21	pub fn get_file_len(&self) -> Outcome<u64> {
22	match &self.file {
23	Some(file) => match file.metadata() {
24	Err(e) => Err(err!(e,
25	"Could not read metadata for file {:?}.", self.path;
26	IO, File, Read)),
27	Ok(metadata) => Ok(metadata.len()),
28	},
29	None => Err(err!(
30	"Attempt to get length of a live file {:?} but the file is None.", self.path;
31	Invalid, Input)),
32	}
33	}
34
35	pub fn close(&mut self) {
36	if let Some(file) = std::mem::take(&mut self.file) {
37	drop(file);
38	}
39	}
40
41	}
42
43	/// Acts as a cache to reduce repeated reformulation of the live file path and reacquisition of
44	/// the files and the data file length.
45	#[derive(Debug, Default)]
46	pub struct LivePair {
47	pub fnum: FileNum,
48	pub dat: LiveFile,
49	pub ind: LiveFile,
50	}
51
52	impl LivePair {
53	pub fn close(&mut self) {
54	self.dat.close();
55	self.ind.close();
56	}
57	}