mirror of
https://github.com/meilisearch/MeiliSearch
synced 2024-11-23 21:34:27 +01:00
80 lines
2.3 KiB
Rust
80 lines
2.3 KiB
Rust
use std::io::{self, BufRead};
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use std::iter::once;
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use std::path::PathBuf;
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use std::time::Instant;
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use heed::EnvOpenOptions;
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use log::debug;
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use structopt::StructOpt;
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use crate::Index;
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#[derive(Debug, StructOpt)]
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/// A simple search helper binary for the milli project.
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pub struct Opt {
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/// The database path where the database is located.
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/// It is created if it doesn't already exist.
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#[structopt(long = "db", parse(from_os_str))]
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database: PathBuf,
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/// The maximum size the database can take on disk. It is recommended to specify
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/// the whole disk space (value must be a multiple of a page size).
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#[structopt(long = "db-size", default_value = "107374182400")] // 100 GB
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database_size: usize,
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/// Verbose mode (-v, -vv, -vvv, etc.)
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#[structopt(short, long, parse(from_occurrences))]
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verbose: usize,
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/// The query string to search for (doesn't support prefix search yet).
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query: Option<String>,
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}
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pub fn run(opt: Opt) -> anyhow::Result<()> {
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stderrlog::new()
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.verbosity(opt.verbose)
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.show_level(false)
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.timestamp(stderrlog::Timestamp::Off)
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.init()?;
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std::fs::create_dir_all(&opt.database)?;
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let env = EnvOpenOptions::new()
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.map_size(opt.database_size)
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.max_dbs(10)
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.open(&opt.database)?;
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// Open the LMDB database.
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let index = Index::new(&env)?;
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let rtxn = env.read_txn()?;
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let stdin = io::stdin();
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let lines = match opt.query {
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Some(query) => Box::new(once(Ok(query.to_string()))),
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None => Box::new(stdin.lock().lines()) as Box<dyn Iterator<Item = _>>,
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};
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for result in lines {
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let before = Instant::now();
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let query = result?;
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let result = index.search(&rtxn).query(query).execute().unwrap();
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let headers = match index.headers(&rtxn)? {
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Some(headers) => headers,
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None => return Ok(()),
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};
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let documents = index.documents(&rtxn, result.documents_ids.iter().cloned())?;
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let mut wtr = csv::Writer::from_writer(io::stdout());
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wtr.write_record(&headers)?;
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for (_id, record) in documents {
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wtr.write_record(&record)?;
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}
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wtr.flush()?;
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debug!("Took {:.02?} to find {} documents", before.elapsed(), result.documents_ids.len());
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}
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Ok(())
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}
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