feat: Make a CLI that handle compile-time features

2024-11-23 05:14:27 +01:00 · 2018-10-03 16:21:33 +02:00 · 2018-10-03 16:21:33 +02:00 · 474028145d
commit 474028145d
parent a066c084fe
22 changed files with 811 additions and 774 deletions
--- a/Cargo.lock
+++ b/Cargo.lock
@ -39,11 +39,11 @@ dependencies = [
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@ -179,7 +179,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -374,7 +373,7 @@ dependencies = [
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@ -396,7 +395,7 @@ dependencies = [
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@ -440,7 +439,7 @@ dependencies = [
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@ -658,7 +657,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -669,7 +668,7 @@ name = "quote"
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@ -724,55 +723,21 @@ dependencies = [
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--- a/Cargo.toml
+++ b/Cargo.toml
@ -1,11 +1,36 @@
-[workspace]
+[package]
-members = [
+edition = "2018"
-    "raptor",
+name = "raptor-cli"
-    "raptor-indexer",
+version = "0.1.0"
-    "raptor-indexer-csv",
+authors = ["Clément Renault <renault.cle@gmail.com>"]
-    "raptor-search",
+
-    "raptor-http",
+[dependencies]
-]
+raptor = { path = "raptor" }
 rocksdb = { git = "https://github.com/pingcap/rust-rocksdb.git" }
 serde_derive = "1.0"
 structopt = "0.2"
 serde = "1.0"
 warp = { version = "0.1", optional = true }
 serde_json = { version = "1.0", optional = true }
 csv = { version = "1.0", optional = true }
 moby-name-gen = { version = "0.1", optional = true }
 unidecode = { version = "0.3", optional = true }
 elapsed = { version = "0.1", optional = true }
 [dependencies.fst]
 git = "https://github.com/Kerollmops/fst.git"
 branch = "automaton-for-deref"
 [features]
 default = ["index-csv", "serve-http", "serve-console"]
 index-jsonlines = ["index", "serde_json"]
 index-csv = ["index", "csv"]
 index = ["moby-name-gen", "unidecode"]
 serve-http = ["serve", "warp", "serde_json"]
 serve-console = ["serve", "elapsed"]
 serve = []
 [profile.release]
 lto = true
--- a/raptor-http/Cargo.toml
+++ b/raptor-http/Cargo.toml
@ -1,20 +0,0 @@
 [package]
 edition = "2018"
 name = "raptor-http"
 version = "0.1.0"
 authors = ["Clément Renault <renault.cle@gmail.com>"]
 [dependencies]
 raptor = { path = "../raptor" }
 serde_derive = "1.0"
 serde_json = "1.0"
 structopt = "0.2"
 serde = "1.0"
 warp = "0.1"
 [dependencies.fst]
 git = "https://github.com/Kerollmops/fst.git"
 branch = "automaton-for-deref"
 [dependencies.rocksdb]
 git = "https://github.com/pingcap/rust-rocksdb.git"
--- a/raptor-http/src/main.rs
+++ b/raptor-http/src/main.rs
@ -1,137 +0,0 @@
 #[macro_use] extern crate serde_derive;
 use std::fs::File;
 use std::net::SocketAddr;
 use structopt::StructOpt;
 use std::path::{Path, PathBuf};
 use std::collections::hash_set::HashSet;
 use std::io::{self, BufReader, BufRead, Write};
 use std::sync::Arc;
 use std::error::Error;
 use std::str::from_utf8_unchecked;
 use rocksdb::{DB, DBOptions, IngestExternalFileOptions};
 use raptor::{automaton, Metadata, RankedStream};
 use fst::Streamer;
 use warp::Filter;
 #[derive(Debug, StructOpt)]
 #[structopt(name = "raptor-http", about = "Raptor but wrapped by an http server.")]
 struct Opt {
    /// The addresse and port to bind the server to.
    #[structopt(short = "l", default_value = "127.0.0.1:3030")]
    listen_addr: SocketAddr,
    /// The stop word file, each word must be separated by a newline.
    #[structopt(long = "stop-words", parse(from_os_str))]
    stop_words: PathBuf,
    /// Meta file name (e.g. relaxed-colden).
    meta_name: String,
 }
 #[derive(Debug, Deserialize)]
 struct SearchQuery { q: String }
 #[derive(Debug, Serialize)]
 struct Document<'a> {
    id: u64,
    title: &'a str,
    description: &'a str,
    image: &'a str,
 }
 type CommonWords = HashSet<String>;
 fn common_words<P>(path: P) -> io::Result<CommonWords>
 where P: AsRef<Path>,
 {
    let file = File::open(path)?;
    let file = BufReader::new(file);
    let mut set = HashSet::new();
    for line in file.lines().filter_map(|l| l.ok()) {
        for word in line.split_whitespace() {
            set.insert(word.to_owned());
        }
    }
    Ok(set)
 }
 fn search<M, D>(metadata: M, database: D, common_words: &CommonWords, query: &str) -> Result<String, Box<Error>>
 where M: AsRef<Metadata>,
      D: AsRef<DB>,
 {
    let mut automatons = Vec::new();
    for query in query.split_whitespace().map(str::to_lowercase) {
        if common_words.contains(&query) { continue }
        let lev = automaton::build(&query);
        automatons.push(lev);
    }
    let mut stream = RankedStream::new(metadata.as_ref(), automatons, 20);
    let mut body = Vec::new();
    write!(&mut body, "[")?;
    let mut first = true;
    while let Some(document) = stream.next() {
        let title_key = format!("{}-title", document.document_id);
        let title = database.as_ref().get(title_key.as_bytes()).unwrap().unwrap();
        let title = unsafe { from_utf8_unchecked(&title) };
        let description_key = format!("{}-description", document.document_id);
        let description = database.as_ref().get(description_key.as_bytes()).unwrap().unwrap();
        let description = unsafe { from_utf8_unchecked(&description) };
        let image_key = format!("{}-image", document.document_id);
        let image = database.as_ref().get(image_key.as_bytes()).unwrap().unwrap();
        let image = unsafe { from_utf8_unchecked(&image) };
        let document = Document {
            id: document.document_id,
            title: title,
            description: description,
            image: image,
        };
        if !first { write!(&mut body, ",")? }
        serde_json::to_writer(&mut body, &document)?;
        first = false;
    }
    write!(&mut body, "]")?;
    Ok(String::from_utf8(body)?)
 }
 fn main() {
    let opt = Opt::from_args();
    let name = opt.meta_name;
    let map_file = format!("{}.map", name);
    let idx_file = format!("{}.idx", name);
    let sst_file = format!("{}.sst", name);
    let rocksdb = "rocksdb/storage";
    let meta = unsafe { Metadata::from_paths(map_file, idx_file).unwrap() };
    let meta = Arc::new(meta);
    let db = DB::open_default(rocksdb).unwrap();
    db.ingest_external_file(&IngestExternalFileOptions::new(), &[&sst_file]).unwrap();
    drop(db);
    let db = DB::open_for_read_only(DBOptions::default(), rocksdb, false).unwrap();
    let db = Arc::new(db);
    let common_words = common_words(opt.stop_words).expect("reading stop words");
    let routes = warp::path("search")
        .and(warp::query())
        .map(move |query: SearchQuery| {
            let body = search(meta.clone(), db.clone(), &common_words, &query.q).unwrap();
            body
        })
        .with(warp::reply::with::header("Content-Type", "application/json"))
        .with(warp::reply::with::header("Access-Control-Allow-Origin", "*"));
    warp::serve(routes).run(opt.listen_addr);
 }
--- a/raptor-indexer-csv/.gitignore
+++ b/raptor-indexer-csv/.gitignore
@ -1,3 +0,0 @@
 /target
 **/*.rs.bk
--- a/raptor-indexer-csv/Cargo.toml
+++ b/raptor-indexer-csv/Cargo.toml
@ -1,17 +0,0 @@
 [package]
 edition = "2018"
 name = "raptor-indexer-csv"
 version = "0.1.0"
 authors = ["Kerollmops <renault.cle@gmail.com>"]
 [dependencies]
 raptor = { path = "../raptor" }
 serde = "1.0"
 structopt = "0.2"
 serde_derive = "1.0"
 csv = "1.0"
 unidecode = "0.3"
 moby-name-gen = "0.1"
 [dependencies.rocksdb]
 git = "https://github.com/pingcap/rust-rocksdb.git"
--- a/raptor-indexer-csv/src/main.rs
+++ b/raptor-indexer-csv/src/main.rs
@ -1,143 +0,0 @@
 // TODO make the raptor binary expose multiple subcommand
 //      make only one binary
 #[macro_use] extern crate serde_derive;
 use std::path::{Path, PathBuf};
 use std::collections::{HashSet, BTreeMap};
 use std::io::{self, BufReader, BufRead};
 use std::fs::File;
 use csv::ReaderBuilder;
 use structopt::StructOpt;
 use raptor::{MetadataBuilder, DocIndex, Tokenizer};
 use rocksdb::{SstFileWriter, EnvOptions, ColumnFamilyOptions};
 use unidecode::unidecode;
 #[derive(Debug, StructOpt)]
 #[structopt(name = "raptor-indexer-csv", about = "A Raptor binary to index csv stored products.")]
 struct Opt {
    /// The stop word file, each word must be separated by a newline.
    #[structopt(long = "stop-words", parse(from_os_str))]
    stop_words: PathBuf,
    /// The csv file to index.
    #[structopt(parse(from_os_str))]
    products: PathBuf,
 }
 #[derive(Debug, Deserialize)]
 struct Product {
    #[serde(rename = "_unit_id")]
    id: u64,
    #[serde(rename = "product_title")]
    title: String,
    #[serde(rename = "product_image")]
    image: String,
    #[serde(rename = "product_description")]
    description: String,
 }
 type CommonWords = HashSet<String>;
 fn common_words<P>(path: P) -> io::Result<CommonWords>
 where P: AsRef<Path>,
 {
    let file = File::open(path)?;
    let file = BufReader::new(file);
    let mut set = HashSet::new();
    for line in file.lines().filter_map(|l| l.ok()) {
        for word in line.split_whitespace() {
            set.insert(word.to_owned());
        }
    }
    Ok(set)
 }
 fn insert_document_words<'a, I, A, B>(builder: &mut MetadataBuilder<A, B>, doc_index: u64, attr: u8, words: I)
 where A: io::Write,
      B: io::Write,
      I: IntoIterator<Item=(usize, &'a str)>,
 {
    for (index, word) in words {
        let doc_index = DocIndex {
            document: doc_index,
            attribute: attr,
            attribute_index: index as u32,
        };
        // insert the exact representation
        let word_lower = word.to_lowercase();
        // and the unidecoded lowercased version
        let word_unidecoded = unidecode(word).to_lowercase();
        if word_lower != word_unidecoded {
            builder.insert(word_unidecoded, doc_index);
        }
        builder.insert(word_lower, doc_index);
    }
 }
 fn main() {
    let opt = Opt::from_args();
    let common_words = common_words(opt.stop_words).expect("reading stop words");
    // TODO add a subcommand to pack these files in a tar.xxx archive
    let random_name = moby_name_gen::random_name();
    let map_file = format!("{}.map", random_name);
    let idx_file = format!("{}.idx", random_name);
    let sst_file = format!("{}.sst", random_name);
    let env_options = EnvOptions::new();
    let cf_options = ColumnFamilyOptions::new();
    let mut sst_file_writer = SstFileWriter::new(env_options, cf_options);
    sst_file_writer.open(&sst_file).expect("open the sst file");
    let map = File::create(&map_file).unwrap();
    let indexes = File::create(&idx_file).unwrap();
    let mut builder = MetadataBuilder::new(map, indexes);
    let mut fields = BTreeMap::new();
    let mut rdr = ReaderBuilder::new().from_path(opt.products).expect("reading product file");
    let mut errors = 0;
    for result in rdr.deserialize() {
        let product: Product = match result {
            Ok(product) => product,
            Err(e) => { eprintln!("{:?}", e); errors += 1; continue },
        };
        let title = Tokenizer::new(&product.title);
        let title = title.iter().filter(|&(_, w)| !common_words.contains(w));
        insert_document_words(&mut builder, product.id, 0, title);
        let description = Tokenizer::new(&product.description);
        let description = description.iter().filter(|&(_, w)| !common_words.contains(w));
        insert_document_words(&mut builder, product.id, 1, description);
        // TODO simplify this by using functions and
        //      use the MetadataBuilder internal BTreeMap ?
        let key = format!("{}-title", product.id);
        let value = product.title;
        fields.insert(key, value);
        let key = format!("{}-description", product.id);
        let value = product.description;
        fields.insert(key, value);
        let key = format!("{}-image", product.id);
        let value = product.image;
        fields.insert(key, value);
    }
    for (key, value) in fields {
        sst_file_writer.put(key.as_bytes(), value.as_bytes()).unwrap();
    }
    let _sst_file_info = sst_file_writer.finish().unwrap();
    builder.finish().unwrap();
    println!("Found {} errorneous lines", errors);
    println!("Succesfully created {:?} dump.", random_name);
 }
--- a/raptor-indexer/.gitignore
+++ b/raptor-indexer/.gitignore
@ -1,3 +0,0 @@
 /target
 **/*.rs.bk
--- a/raptor-indexer/Cargo.toml
+++ b/raptor-indexer/Cargo.toml
@ -1,16 +0,0 @@
 [package]
 edition = "2018"
 name = "raptor-indexer"
 version = "0.1.0"
 authors = ["Kerollmops <renault.cle@gmail.com>"]
 [dependencies]
 raptor = { path = "../raptor" }
 serde = "1.0"
 serde_derive = "1.0"
 serde_json = "1.0"
 unidecode = "0.3"
 moby-name-gen = "0.1"
 [dependencies.rocksdb]
 git = "https://github.com/pingcap/rust-rocksdb.git"
--- a/raptor-indexer/src/main.rs
+++ b/raptor-indexer/src/main.rs
@ -1,123 +0,0 @@
 // TODO make the raptor binary expose multiple subcommand
 //      make only one binary
 #[macro_use] extern crate serde_derive;
 use std::path::Path;
 use std::collections::{HashSet, BTreeMap};
 use std::io::{self, BufReader, BufRead};
 use std::fs::File;
 use std::env;
 use raptor::{MetadataBuilder, DocIndex, Tokenizer};
 use rocksdb::{SstFileWriter, EnvOptions, ColumnFamilyOptions};
 use serde_json::from_str;
 use unidecode::unidecode;
 #[derive(Debug, Deserialize)]
 struct Product {
    title: String,
    group_id: u64,
    ft: String,
 }
 type CommonWords = HashSet<String>;
 fn common_words<P>(path: P) -> io::Result<CommonWords>
 where P: AsRef<Path>,
 {
    let file = File::open(path)?;
    let file = BufReader::new(file);
    let mut set = HashSet::new();
    for line in file.lines().filter_map(|l| l.ok()) {
        for word in line.split_whitespace() {
            set.insert(word.to_owned());
        }
    }
    Ok(set)
 }
 fn insert_document_words<'a, I, A, B>(builder: &mut MetadataBuilder<A, B>, doc_index: u64, attr: u8, words: I)
 where A: io::Write,
      B: io::Write,
      I: IntoIterator<Item=(usize, &'a str)>,
 {
    for (index, word) in words {
        let doc_index = DocIndex {
            document: doc_index,
            attribute: attr,
            attribute_index: index as u32,
        };
        // insert the exact representation
        let word_lower = word.to_lowercase();
        // and the unidecoded lowercased version
        let word_unidecoded = unidecode(word).to_lowercase();
        if word_lower != word_unidecoded {
            builder.insert(word_unidecoded, doc_index);
        }
        builder.insert(word_lower, doc_index);
    }
 }
 fn main() {
    let data_path = env::args().nth(1).expect("Missing data json lines file (e.g. products.json_lines)");
    let data = File::open(data_path).unwrap();
    let data = BufReader::new(data);
    let common_path = "fr.stopwords.txt";
    let common_words = common_words(common_path).unwrap_or_else(|e| {
        println!("{:?}: {:?}", common_path, e);
        HashSet::new()
    });
    // TODO add a subcommand to pack these files in a tar.xxx archive
    let random_name = moby_name_gen::random_name();
    let map_file = format!("{}.map", random_name);
    let idx_file = format!("{}.idx", random_name);
    let sst_file = format!("{}.sst", random_name);
    let env_options = EnvOptions::new();
    let cf_options = ColumnFamilyOptions::new();
    let mut sst_file_writer = SstFileWriter::new(env_options, cf_options);
    sst_file_writer.open(&sst_file).expect("open the sst file");
    let map = File::create(&map_file).unwrap();
    let indexes = File::create(&idx_file).unwrap();
    let mut builder = MetadataBuilder::new(map, indexes);
    let mut fields = BTreeMap::new();
    for line in data.lines() {
        let line = line.unwrap();
        let product: Product = from_str(&line).unwrap();
        let title = Tokenizer::new(&product.title);
        let title = title.iter().filter(|&(_, w)| !common_words.contains(w));
        insert_document_words(&mut builder, product.group_id, 0, title);
        let description = Tokenizer::new(&product.ft);
        let description = description.iter().filter(|&(_, w)| !common_words.contains(w));
        insert_document_words(&mut builder, product.group_id, 1, description);
        // TODO simplify this by using functions and
        //      use the MetadataBuilder internal BTreeMap ?
        let key = format!("{}-title", product.group_id);
        let value = product.title;
        fields.insert(key, value);
        let key = format!("{}-description", product.group_id);
        let value = product.ft;
        fields.insert(key, value);
    }
    for (key, value) in fields {
        sst_file_writer.put(key.as_bytes(), value.as_bytes()).unwrap();
    }
    let _sst_file_info = sst_file_writer.finish().unwrap();
    builder.finish().unwrap();
    println!("Succesfully created {:?} dump.", random_name);
 }
--- a/raptor-search/.gitignore
+++ b/raptor-search/.gitignore
@ -1,3 +0,0 @@
 /target
 **/*.rs.bk
--- a/raptor-search/Cargo.toml
+++ b/raptor-search/Cargo.toml
@ -1,17 +0,0 @@
 [package]
 edition = "2018"
 name = "raptor-search"
 version = "0.1.0"
 authors = ["Kerollmops <renault.cle@gmail.com>"]
 [dependencies]
 raptor = { path = "../raptor" }
 structopt = "0.2"
 elapsed = "0.1"
 [dependencies.fst]
 git = "https://github.com/Kerollmops/fst.git"
 branch = "automaton-for-deref"
 [dependencies.rocksdb]
 git = "https://github.com/pingcap/rust-rocksdb.git"
--- a/raptor-search/benches/main.rs
+++ b/raptor-search/benches/main.rs
@ -1,29 +0,0 @@
 #![feature(test)]
 extern crate test;
 extern crate fst;
 extern crate raptor;
 use fst::Streamer;
 use raptor::{load_map, RankedStream, LevBuilder};
 #[bench]
 fn chauve_souris(b: &mut test::Bencher) {
    let lev_builder = LevBuilder::new();
    let map = load_map("map.fst", "values.vecs").unwrap();
    let query = "chauve souris";
    b.iter(|| {
        let mut automatons = Vec::new();
        for query in query.split_whitespace() {
            let lev = lev_builder.build_automaton(query);
            automatons.push(lev);
        }
        let mut stream = RankedStream::new(&map, &map.values(), automatons, 20);
        while let Some(document_id) = stream.next() {
            test::black_box(document_id);
        }
    })
 }
--- a/raptor-search/src/main.rs
+++ b/raptor-search/src/main.rs
@ -1,97 +0,0 @@
 use std::fs::File;
 use std::path::{Path, PathBuf};
 use std::collections::HashSet;
 use std::str::from_utf8_unchecked;
 use std::io::{self, BufReader, BufRead, Write};
 use structopt::StructOpt;
 use elapsed::measure_time;
 use fst::Streamer;
 use rocksdb::{DB, DBOptions, IngestExternalFileOptions};
 use raptor::{automaton, Metadata, RankedStream};
 #[derive(Debug, StructOpt)]
 #[structopt(name = "raptor-search", about = "A Raptor binary to search in a dump.")]
 struct Opt {
    /// The stop word file, each word must be separated by a newline.
    #[structopt(long = "stop-words", parse(from_os_str))]
    stop_words: PathBuf,
    /// Meta file name (e.g. relaxed-colden).
    meta_name: String,
 }
 type CommonWords = HashSet<String>;
 fn common_words<P>(path: P) -> io::Result<CommonWords>
 where P: AsRef<Path>,
 {
    let file = File::open(path)?;
    let file = BufReader::new(file);
    let mut set = HashSet::new();
    for line in file.lines().filter_map(|l| l.ok()) {
        for word in line.split_whitespace() {
            set.insert(word.to_owned());
        }
    }
    Ok(set)
 }
 fn search(metadata: &Metadata, database: &DB, common_words: &CommonWords, query: &str) {
    let mut automatons = Vec::new();
    for query in query.split_whitespace().filter(|q| !common_words.contains(*q)) {
        let lev = automaton::build(query);
        automatons.push(lev);
    }
    let mut stream = RankedStream::new(&metadata, 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 opt = Opt::from_args();
    let name = opt.meta_name;
    let map_file = format!("{}.map", name);
    let idx_file = format!("{}.idx", name);
    let sst_file = format!("{}.sst", name);
    let rocksdb = "rocksdb/storage";
    let (elapsed, meta) = measure_time(|| unsafe {
        Metadata::from_paths(map_file, idx_file).unwrap()
    });
    println!("{} to load metadata", elapsed);
    let (elapsed, db) = measure_time(|| {
        let db = DB::open_default(rocksdb).unwrap();
        db.ingest_external_file(&IngestExternalFileOptions::new(), &[&sst_file]).unwrap();
        drop(db);
        DB::open_for_read_only(DBOptions::default(), rocksdb, false).unwrap()
    });
    println!("{} to load the SST file in RocksDB and reopen it for read-only", elapsed);
    let common_words = common_words(opt.stop_words).expect("reading stop words");
    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, &common_words, &query));
        println!("Finished in {}", elapsed);
    }
 }
--- a/src/common_words.rs
+++ b/src/common_words.rs
@ -0,0 +1,20 @@
 use std::io::{self, BufReader, BufRead};
 use std::collections::HashSet;
 use std::path::Path;
 use std::fs::File;
 pub type CommonWords = HashSet<String>;
 pub fn from_file<P>(path: P) -> io::Result<CommonWords>
 where P: AsRef<Path>,
 {
    let file = File::open(path)?;
    let file = BufReader::new(file);
    let mut set = HashSet::new();
    for line in file.lines().filter_map(|l| l.ok()) {
        for word in line.split_whitespace() {
            set.insert(word.to_owned());
        }
    }
    Ok(set)
 }
--- a/src/index/csv.rs
+++ b/src/index/csv.rs
@ -0,0 +1,122 @@
 use std::collections::BTreeMap;
 use std::path::PathBuf;
 use std::fs::File;
 use std::io;
 use rocksdb::{SstFileWriter, EnvOptions, ColumnFamilyOptions};
 use raptor::{MetadataBuilder, DocIndex, Tokenizer};
 use unidecode::unidecode;
 use csv::ReaderBuilder;
 use crate::common_words::{self, CommonWords};
 use crate::index::csv_feature::CommandCsv;
 #[derive(Debug, Deserialize)]
 struct Product {
    #[serde(rename = "_unit_id")]
    id: u64,
    #[serde(rename = "product_title")]
    title: String,
    #[serde(rename = "product_image")]
    image: String,
    #[serde(rename = "product_description")]
    description: String,
 }
 #[derive(Debug)]
 pub struct CsvIndexer {
    common_words: CommonWords,
    products: PathBuf,
 }
 impl CsvIndexer {
    pub fn from_command(command: CommandCsv) -> io::Result<CsvIndexer> {
        let common_words = common_words::from_file(command.stop_words)?;
        let products = command.products;
        Ok(CsvIndexer { common_words, products })
    }
    pub fn index(self) {
        let random_name = moby_name_gen::random_name();
        let map_file = format!("{}.map", random_name);
        let idx_file = format!("{}.idx", random_name);
        let sst_file = format!("{}.sst", random_name);
        let env_options = EnvOptions::new();
        let cf_options = ColumnFamilyOptions::new();
        let mut sst_file_writer = SstFileWriter::new(env_options, cf_options);
        sst_file_writer.open(&sst_file).expect("open the sst file");
        let map = File::create(&map_file).unwrap();
        let indexes = File::create(&idx_file).unwrap();
        let mut builder = MetadataBuilder::new(map, indexes);
        let mut fields = BTreeMap::new();
        let mut rdr = ReaderBuilder::new().from_path(&self.products).expect("reading product file");
        let mut errors = 0;
        for result in rdr.deserialize() {
            let product: Product = match result {
                Ok(product) => product,
                Err(e) => { eprintln!("{:?}", e); errors += 1; continue },
            };
            let title = Tokenizer::new(&product.title);
            let title = title.iter().filter(|&(_, w)| !self.common_words.contains(w));
            insert_document_words(&mut builder, product.id, 0, title);
            let description = Tokenizer::new(&product.description);
            let description = description.iter().filter(|&(_, w)| !self.common_words.contains(w));
            insert_document_words(&mut builder, product.id, 1, description);
            // TODO simplify this by using functions and
            //      use the MetadataBuilder internal BTreeMap ?
            let key = format!("{}-title", product.id);
            let value = product.title;
            fields.insert(key, value);
            let key = format!("{}-description", product.id);
            let value = product.description;
            fields.insert(key, value);
            let key = format!("{}-image", product.id);
            let value = product.image;
            fields.insert(key, value);
        }
        for (key, value) in fields {
            sst_file_writer.put(key.as_bytes(), value.as_bytes()).unwrap();
        }
        let _sst_file_info = sst_file_writer.finish().unwrap();
        builder.finish().unwrap();
        println!("Found {} errorneous lines", errors);
        println!("Succesfully created {:?} dump.", random_name);
    }
 }
 fn insert_document_words<'a, I, A, B>(builder: &mut MetadataBuilder<A, B>, doc_index: u64, attr: u8, words: I)
 where A: io::Write,
      B: io::Write,
      I: IntoIterator<Item=(usize, &'a str)>,
 {
    for (index, word) in words {
        let doc_index = DocIndex {
            document: doc_index,
            attribute: attr,
            attribute_index: index as u32,
        };
        // insert the exact representation
        let word_lower = word.to_lowercase();
        // and the unidecoded lowercased version
        let word_unidecoded = unidecode(word).to_lowercase();
        if word_lower != word_unidecoded {
            builder.insert(word_unidecoded, doc_index);
        }
        builder.insert(word_lower, doc_index);
    }
 }
--- a/src/index/json_lines.rs
+++ b/src/index/json_lines.rs
@ -0,0 +1,112 @@
 use std::collections::BTreeMap;
 use std::path::PathBuf;
 use std::fs::File;
 use std::io::{self, BufReader, BufRead};
 use serde_json::from_str;
 use rocksdb::{SstFileWriter, EnvOptions, ColumnFamilyOptions};
 use raptor::{MetadataBuilder, DocIndex, Tokenizer};
 use unidecode::unidecode;
 use crate::common_words::{self, CommonWords};
 use crate::index::jsonlines_feature::CommandJsonLines;
 #[derive(Debug, Deserialize)]
 struct Product {
    title: String,
    group_id: u64,
    ft: String,
 }
 #[derive(Debug)]
 pub struct JsonLinesIndexer {
    common_words: CommonWords,
    products: PathBuf,
 }
 impl JsonLinesIndexer {
    pub fn from_command(command: CommandJsonLines) -> io::Result<JsonLinesIndexer> {
        let common_words = common_words::from_file(command.stop_words)?;
        let products = command.products;
        Ok(JsonLinesIndexer { common_words, products })
    }
    pub fn index(self) {
        let data = File::open(&self.products).unwrap();
        let data = BufReader::new(data);
        // TODO add a subcommand to pack these files in a tar.xxx archive
        let random_name = moby_name_gen::random_name();
        let map_file = format!("{}.map", random_name);
        let idx_file = format!("{}.idx", random_name);
        let sst_file = format!("{}.sst", random_name);
        let env_options = EnvOptions::new();
        let cf_options = ColumnFamilyOptions::new();
        let mut sst_file_writer = SstFileWriter::new(env_options, cf_options);
        sst_file_writer.open(&sst_file).expect("open the sst file");
        let map = File::create(&map_file).unwrap();
        let indexes = File::create(&idx_file).unwrap();
        let mut builder = MetadataBuilder::new(map, indexes);
        let mut fields = BTreeMap::new();
        for line in data.lines() {
            let line = line.unwrap();
            let product: Product = from_str(&line).unwrap();
            let title = Tokenizer::new(&product.title);
            let title = title.iter().filter(|&(_, w)| !self.common_words.contains(w));
            insert_document_words(&mut builder, product.group_id, 0, title);
            let description = Tokenizer::new(&product.ft);
            let description = description.iter().filter(|&(_, w)| !self.common_words.contains(w));
            insert_document_words(&mut builder, product.group_id, 1, description);
            // TODO simplify this by using functions and
            //      use the MetadataBuilder internal BTreeMap ?
            let key = format!("{}-title", product.group_id);
            let value = product.title;
            fields.insert(key, value);
            let key = format!("{}-description", product.group_id);
            let value = product.ft;
            fields.insert(key, value);
        }
        for (key, value) in fields {
            sst_file_writer.put(key.as_bytes(), value.as_bytes()).unwrap();
        }
        let _sst_file_info = sst_file_writer.finish().unwrap();
        builder.finish().unwrap();
        println!("Succesfully created {:?} dump.", random_name);
    }
 }
 fn insert_document_words<'a, I, A, B>(builder: &mut MetadataBuilder<A, B>, doc_index: u64, attr: u8, words: I)
 where A: io::Write,
      B: io::Write,
      I: IntoIterator<Item=(usize, &'a str)>,
 {
    for (index, word) in words {
        let doc_index = DocIndex {
            document: doc_index,
            attribute: attr,
            attribute_index: index as u32,
        };
        // insert the exact representation
        let word_lower = word.to_lowercase();
        // and the unidecoded lowercased version
        let word_unidecoded = unidecode(word).to_lowercase();
        if word_lower != word_unidecoded {
            builder.insert(word_unidecoded, doc_index);
        }
        builder.insert(word_lower, doc_index);
    }
 }
--- a/src/index/mod.rs
+++ b/src/index/mod.rs
@ -0,0 +1,71 @@
 #[cfg(feature = "index-csv")]
 mod csv;
 #[cfg(feature = "index-jsonlines")]
 mod json_lines;
 use structopt::StructOpt;
 #[derive(Debug, StructOpt)]
 pub enum CommandIndex {
    #[cfg(feature = "index-jsonlines")]
    /// Index files encoded as json lines.
    #[structopt(name = "json-lines")]
    JsonLines(self::jsonlines_feature::CommandJsonLines),
    #[cfg(feature = "index-csv")]
    /// Index files encoded as csv.
    #[structopt(name = "csv")]
    Csv(self::csv_feature::CommandCsv),
 }
 #[cfg(feature = "index-jsonlines")]
 pub mod jsonlines_feature {
    use std::error;
    use std::path::PathBuf;
    use structopt::StructOpt;
    #[derive(Debug, StructOpt)]
    pub struct CommandJsonLines {
        /// The stop word file, each word must be separated by a newline.
        #[structopt(long = "stop-words", parse(from_os_str))]
        pub stop_words: PathBuf,
        /// The csv file to index.
        #[structopt(parse(from_os_str))]
        pub products: PathBuf,
    }
    pub fn json_lines(command: CommandJsonLines) -> Result<(), Box<error::Error>> {
        use super::json_lines::JsonLinesIndexer;
        let indexer = JsonLinesIndexer::from_command(command)?;
        Ok(indexer.index())
    }
 }
 #[cfg(feature = "index-csv")]
 pub mod csv_feature {
    use std::error;
    use std::path::PathBuf;
    use structopt::StructOpt;
    #[derive(Debug, StructOpt)]
    pub struct CommandCsv {
        /// The stop word file, each word must be separated by a newline.
        #[structopt(long = "stop-words", parse(from_os_str))]
        pub stop_words: PathBuf,
        /// The csv file to index.
        #[structopt(parse(from_os_str))]
        pub products: PathBuf,
    }
    pub fn csv(command: CommandCsv) -> Result<(), Box<error::Error>> {
        use super::csv::CsvIndexer;
        let indexer = CsvIndexer::from_command(command)?;
        Ok(indexer.index())
    }
 }
--- a/src/main.rs
+++ b/src/main.rs
@ -0,0 +1,50 @@
 #[macro_use] extern crate serde_derive;
 #[cfg(feature = "index")]
 mod index;
 #[cfg(feature = "serve")]
 mod serve;
 mod common_words;
 use structopt::StructOpt;
 #[derive(Debug, StructOpt)]
 #[structopt(name = "raptor-cli", about = "A command line to do raptor operations.")]
 enum Commands {
    #[cfg(feature = "index")]
    /// Index files of different format.
    #[structopt(name = "index")]
    Index(index::CommandIndex),
    #[cfg(feature = "serve")]
    /// Serve indexes.
    #[structopt(name = "serve")]
    Serve(serve::CommandServe),
 }
 fn main() {
    let ret = match Commands::from_args() {
        #[cfg(feature = "index")]
        Commands::Index(i) => match i {
            #[cfg(feature = "index-jsonlines")]
            index::CommandIndex::JsonLines(command) => index::jsonlines_feature::json_lines(command),
            #[cfg(feature = "index-csv")]
            index::CommandIndex::Csv(command) => index::csv_feature::csv(command),
        },
        #[cfg(feature = "serve")]
        Commands::Serve(s) => match s {
            #[cfg(feature = "serve-http")]
            serve::CommandServe::Http(command) => serve::http_feature::http(command),
            #[cfg(feature = "serve-console")]
            serve::CommandServe::Console(command) => serve::console_feature::console(command),
        },
    };
    if let Err(e) = ret { eprintln!("{}", e) }
 }
--- a/src/serve/console.rs
+++ b/src/serve/console.rs
@ -0,0 +1,72 @@
 use std::str::from_utf8_unchecked;
 use std::io::{self, Write};
 use fst::Streamer;
 use elapsed::measure_time;
 use rocksdb::{DB, DBOptions, IngestExternalFileOptions};
 use raptor::{automaton, Metadata, RankedStream};
 use crate::serve::console_feature::CommandConsole;
 use crate::common_words::{self, CommonWords};
 pub struct ConsoleSearch {
    common_words: CommonWords,
    metadata: Metadata,
    db: DB,
 }
 impl ConsoleSearch {
    pub fn from_command(command: CommandConsole) -> io::Result<ConsoleSearch> {
        let common_words = common_words::from_file(command.stop_words)?;
        let meta_name = command.meta_name.display();
        let map_file = format!("{}.map", meta_name);
        let idx_file = format!("{}.idx", meta_name);
        let sst_file = format!("{}.sst", meta_name);
        let metadata = unsafe { Metadata::from_paths(map_file, idx_file).unwrap() };
        let rocksdb = "rocksdb/storage";
        let db = DB::open_default(rocksdb).unwrap();
        db.ingest_external_file(&IngestExternalFileOptions::new(), &[&sst_file]).unwrap();
        drop(db);
        let db = DB::open_for_read_only(DBOptions::default(), rocksdb, false).unwrap();
        Ok(ConsoleSearch { common_words, metadata, db })
    }
    pub fn serve(self) {
        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(&self.metadata, &self.db, &self.common_words, &query));
            println!("Finished in {}", elapsed);
        }
    }
 }
 fn search(metadata: &Metadata, database: &DB, common_words: &CommonWords, query: &str) {
    let mut automatons = Vec::new();
    for query in query.split_whitespace().filter(|q| !common_words.contains(*q)) {
        let lev = automaton::build(query);
        automatons.push(lev);
    }
    let mut stream = RankedStream::new(&metadata, 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!();
    }
 }
--- a/src/serve/http.rs
+++ b/src/serve/http.rs
@ -0,0 +1,120 @@
 use std::str::from_utf8_unchecked;
 use std::io::{self, Write};
 use std::net::SocketAddr;
 use std::error::Error;
 use std::sync::Arc;
 use rocksdb::{DB, DBOptions, IngestExternalFileOptions};
 use raptor::{automaton, Metadata};
 use raptor::rank::RankedStream;
 use fst::Streamer;
 use warp::Filter;
 use crate::serve::http_feature::CommandHttp;
 use crate::common_words::{self, CommonWords};
 #[derive(Debug, Serialize)]
 struct Document<'a> {
    id: u64,
    title: &'a str,
    description: &'a str,
    image: &'a str,
 }
 pub struct HttpServer {
    listen_addr: SocketAddr,
    common_words: Arc<CommonWords>,
    metadata: Arc<Metadata>,
    db: Arc<DB>,
 }
 #[derive(Debug, Deserialize)]
 struct SearchQuery { q: String }
 impl HttpServer {
    pub fn from_command(command: CommandHttp) -> io::Result<HttpServer> {
        let common_words = common_words::from_file(command.stop_words)?;
        let meta_name = command.meta_name.display();
        let map_file = format!("{}.map", meta_name);
        let idx_file = format!("{}.idx", meta_name);
        let sst_file = format!("{}.sst", meta_name);
        let metadata = unsafe { Metadata::from_paths(map_file, idx_file).unwrap() };
        let rocksdb = "rocksdb/storage";
        let db = DB::open_default(rocksdb).unwrap();
        db.ingest_external_file(&IngestExternalFileOptions::new(), &[&sst_file]).unwrap();
        drop(db);
        let db = DB::open_for_read_only(DBOptions::default(), rocksdb, false).unwrap();
        Ok(HttpServer {
            listen_addr: command.listen_addr,
            common_words: Arc::new(common_words),
            metadata: Arc::new(metadata),
            db: Arc::new(db),
        })
    }
    pub fn serve(self) {
        let HttpServer { listen_addr, common_words, metadata, db } = self;
        let routes = warp::path("search")
            .and(warp::query())
            .map(move |query: SearchQuery| {
                let body = search(metadata.clone(), db.clone(), common_words.clone(), &query.q).unwrap();
                body
            })
            .with(warp::reply::with::header("Content-Type", "application/json"))
            .with(warp::reply::with::header("Access-Control-Allow-Origin", "*"));
        warp::serve(routes).run(listen_addr)
    }
 }
 fn search<M, D, C>(metadata: M, database: D, common_words: C, query: &str) -> Result<String, Box<Error>>
 where M: AsRef<Metadata>,
      D: AsRef<DB>,
      C: AsRef<CommonWords>,
 {
    let mut automatons = Vec::new();
    for query in query.split_whitespace().map(str::to_lowercase) {
        if common_words.as_ref().contains(&query) { continue }
        let lev = automaton::build(&query);
        automatons.push(lev);
    }
    let mut stream = RankedStream::new(metadata.as_ref(), automatons, 20);
    let mut body = Vec::new();
    write!(&mut body, "[")?;
    let mut first = true;
    while let Some(document) = stream.next() {
        let title_key = format!("{}-title", document.document_id);
        let title = database.as_ref().get(title_key.as_bytes()).unwrap().unwrap();
        let title = unsafe { from_utf8_unchecked(&title) };
        let description_key = format!("{}-description", document.document_id);
        let description = database.as_ref().get(description_key.as_bytes()).unwrap().unwrap();
        let description = unsafe { from_utf8_unchecked(&description) };
        let image_key = format!("{}-image", document.document_id);
        let image = database.as_ref().get(image_key.as_bytes()).unwrap().unwrap();
        let image = unsafe { from_utf8_unchecked(&image) };
        let document = Document {
            id: document.document_id,
            title: title,
            description: description,
            image: image,
        };
        if !first { write!(&mut body, ",")? }
        serde_json::to_writer(&mut body, &document)?;
        first = false;
    }
    write!(&mut body, "]")?;
    Ok(String::from_utf8(body)?)
 }
--- a/src/serve/mod.rs
+++ b/src/serve/mod.rs
@ -0,0 +1,76 @@
 #[cfg(feature = "serve-http")]
 mod http;
 #[cfg(feature = "serve-console")]
 mod console;
 use structopt::StructOpt;
 #[derive(Debug, StructOpt)]
 pub enum CommandServe {
    #[cfg(feature = "serve-http")]
    /// Serve an index under an http protocol.
    #[structopt(name = "http")]
    Http(self::http_feature::CommandHttp),
    #[cfg(feature = "serve-console")]
    /// Serve an index under a simple console.
    #[structopt(name = "console")]
    Console(self::console_feature::CommandConsole),
 }
 #[cfg(feature = "serve-http")]
 pub mod http_feature {
    use std::error;
    use std::path::PathBuf;
    use std::net::SocketAddr;
    use structopt::StructOpt;
    #[derive(Debug, StructOpt)]
    pub struct CommandHttp {
        /// The address and port to bind the server to.
        #[structopt(short = "l", default_value = "127.0.0.1:3030")]
        pub listen_addr: SocketAddr,
        /// The stop word file, each word must be separated by a newline.
        #[structopt(long = "stop-words", parse(from_os_str))]
        pub stop_words: PathBuf,
        /// Meta file name (e.g. relaxed-colden).
        #[structopt(parse(from_os_str))]
        pub meta_name: PathBuf,
    }
    pub fn http(command: CommandHttp) -> Result<(), Box<error::Error>> {
        use super::http::HttpServer;
        let server = HttpServer::from_command(command)?;
        Ok(server.serve())
    }
 }
 #[cfg(feature = "serve-console")]
 pub mod console_feature {
    use std::error;
    use std::path::PathBuf;
    use structopt::StructOpt;
    #[derive(Debug, StructOpt)]
    pub struct CommandConsole {
        /// The stop word file, each word must be separated by a newline.
        #[structopt(long = "stop-words", parse(from_os_str))]
        pub stop_words: PathBuf,
        /// Meta file name (e.g. relaxed-colden).
        #[structopt(parse(from_os_str))]
        pub meta_name: PathBuf,
    }
    pub fn console(command: CommandConsole) -> Result<(), Box<error::Error>> {
        use super::console::ConsoleSearch;
        let search = ConsoleSearch::from_command(command)?;
        Ok(search.serve())
    }
 }