mirror of
https://github.com/meilisearch/MeiliSearch
synced 2024-11-30 08:44:27 +01:00
99 lines
3.1 KiB
Rust
99 lines
3.1 KiB
Rust
use std::io::{self, BufRead, Write};
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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 byte_unit::Byte;
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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 milli::{Index, obkv_to_json};
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#[cfg(target_os = "linux")]
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#[global_allocator]
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static ALLOC: jemallocator::Jemalloc = jemallocator::Jemalloc;
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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 = "100 GiB")]
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database_size: Byte,
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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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/// Compute and print the facet distribution of all the faceted fields.
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#[structopt(long)]
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print_facet_distribution: bool,
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}
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fn main() -> anyhow::Result<()> {
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let opt = Opt::from_args();
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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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// Return an error if the database does not exist.
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if !opt.database.exists() {
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anyhow::bail!("The database ({}) does not exist.", opt.database.display());
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}
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let mut options = EnvOpenOptions::new();
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options.map_size(opt.database_size.get_bytes() as usize);
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// Open the LMDB database.
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let index = Index::new(options, &opt.database)?;
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let rtxn = index.read_txn()?;
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let fields_ids_map = index.fields_ids_map(&rtxn)?;
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let displayed_fields = match index.displayed_fields_ids(&rtxn)? {
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Some(fields) => fields,
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None => fields_ids_map.iter().map(|(id, _)| id).collect(),
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};
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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))),
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None => Box::new(stdin.lock().lines()) as Box<dyn Iterator<Item = _>>,
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};
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let mut stdout = io::stdout();
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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()?;
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let documents = index.documents(&rtxn, result.documents_ids.iter().cloned())?;
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for (_id, record) in documents {
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let val = obkv_to_json(&displayed_fields, &fields_ids_map, record)?;
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serde_json::to_writer(&mut stdout, &val)?;
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let _ = writeln!(&mut stdout);
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}
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if opt.print_facet_distribution {
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let facets = index.facets_distribution(&rtxn).candidates(result.candidates).execute()?;
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serde_json::to_writer(&mut stdout, &facets)?;
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let _ = writeln!(&mut stdout);
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}
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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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