Created
February 9, 2019 19:08
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| use std::thread; | |
| use std::time as timing; | |
| use time; | |
| use std::fs; | |
| use std::io; | |
| use std::io::BufRead; | |
| static DB_PATH: &str = "./file.db"; | |
| struct Row { | |
| index: isize, | |
| key: String, | |
| value: String, | |
| timestamp: u64, | |
| } | |
| pub fn read() -> io::Result<()> { | |
| println!("init"); | |
| let start = time::precise_time_ns(); | |
| let file = fs::File::open(DB_PATH)?; | |
| let mut rows: Vec<Row> = Vec::new(); | |
| for line in io::BufReader::new(file).lines() { | |
| let l_string: String = line?; | |
| let parts: Vec<&str> = l_string.split("::").collect(); | |
| let index: isize = parts[0].parse::<isize>().unwrap(); | |
| let ti: u64 = parts[3].parse::<u64>().unwrap(); | |
| rows.push(Row { | |
| index: index, | |
| key: parts[1].to_string(), | |
| value: parts[2].to_string(), | |
| timestamp: ti, | |
| }) | |
| } | |
| let diff = (time::precise_time_ns() - start) / 1_000_000; | |
| println!("{:?}", rows.len()); | |
| println!("{:?}", diff); | |
| let dur = timing::Duration::from_secs(1_000_000_000); | |
| thread::sleep(dur); | |
| Ok(()) | |
| } |
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