MeiliSearch/raptor-search/src/main.rs
Clément Renault e5c54c4399 feat: Improve the indexing time a little bit
...by a factor of 17.6x.
2018-08-25 17:00:05 +02:00

78 lines
2.4 KiB
Rust

extern crate rocksdb;
extern crate fst;
extern crate raptor;
extern crate elapsed;
use std::env;
use std::str::from_utf8_unchecked;
use std::io::{self, Write};
use elapsed::measure_time;
use fst::Streamer;
use rocksdb::{DB, DBOptions};
use raptor::{Metadata, RankedStream, LevBuilder};
fn search(metadata: &Metadata, database: &DB, lev_builder: &LevBuilder, query: &str) {
let mut automatons = Vec::new();
for query in query.split_whitespace() {
let lev = lev_builder.get_automaton(query);
automatons.push(lev);
}
let map = metadata.as_map();
let indexes = metadata.as_indexes();
let mut stream = RankedStream::new(&map, &indexes, automatons, 20);
while let Some(document) = stream.next() {
print!("{:?}", document.document_id);
let title_key = format!("{}-title", document.document_id);
let title = database.get(title_key.as_bytes()).unwrap().unwrap();
let title = unsafe { from_utf8_unchecked(&title) };
print!(" {:?}", title);
println!();
}
}
fn main() {
let map_file = "map.meta";
let indexes_file = "indexes.meta";
let rocksdb_file = "rocksdb/storage";
let (elapsed, meta) = measure_time(|| unsafe {
Metadata::from_paths(map_file, indexes_file).unwrap()
});
println!("{} to load metadata", elapsed);
let (elapsed, db) = measure_time(|| {
let options = DBOptions::new();
DB::open_for_read_only(options, rocksdb_file, false).unwrap()
});
println!("{} to load the RocksDB database", elapsed);
let (elapsed, lev_builder) = measure_time(|| LevBuilder::new());
println!("{} to load the levenshtein automaton", elapsed);
match env::args().nth(1) {
Some(query) => {
println!("Searching for: {:?}", query);
let query = query.to_lowercase();
let (elapsed, _) = measure_time(|| search(&meta, &db, &lev_builder, &query));
println!("Finished in {}", elapsed);
},
None => loop {
print!("Searching for: ");
io::stdout().flush().unwrap();
let mut query = String::new();
io::stdin().read_line(&mut query).unwrap();
let query = query.trim().to_lowercase();
if query.is_empty() { break }
let (elapsed, _) = measure_time(|| search(&meta, &db, &lev_builder, &query));
println!("Finished in {}", elapsed);
},
}
}