Small changes, using log.

Cargo.lock

@@ -0,0 +1,857 @@
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Cargo.toml

@@ -25,7 +25,10 @@ ansi_term = "0.8.0"
 urlencoded = "0.4"
 mount = "0.2.1"
 chan = "*"
-
+bincode = "*"
+byteorder = "*"
+log = "0.3"
+env_logger = "0.3"
 
 # [dependencies.clap]
 #version = "2"

src/commands/index.rs

@@ -1,6 +1,7 @@
 use std::convert::From;
 use std::fs::File;
 use std::io;
+use std::cmp;
 use std::io::BufRead;
 use std::io::BufReader;
 use std::io::Read;
@@ -25,16 +26,13 @@ pub fn run_index_cli(argmatch: &ArgMatches) -> Result<(), String> {
         }
     };
     let num_threads = try!(value_t!(argmatch, "num_threads", usize).map_err(|_|format!("Failed to read num_threads argument as an integer.")));
-    run_index(index_directory, document_source, num_threads).map_err(|e| format!("Indexing failed : {:?}", e))
+    let buffer_size = try!(value_t!(argmatch, "memory_size", usize).map_err(|_|format!("Failed to read the buffer size argument as an integer.")));
+    let buffer_size_per_thread = buffer_size / num_threads;
+    run_index(index_directory, document_source, buffer_size_per_thread, num_threads).map_err(|e| format!("Indexing failed : {:?}", e))
 }
 
-enum DocumentSource {
-    FromPipe,
-    FromFile(PathBuf),
-}
-
-fn run_index(directory: PathBuf, document_source: DocumentSource, num_threads: usize) -> tantivy::Result<()> {
-
+fn run_index(directory: PathBuf, document_source: DocumentSource, buffer_size_per_thread: usize, num_threads: usize) -> tantivy::Result<()> {
+    
     let index = try!(Index::open(&directory));
     let schema = index.schema();
     let (line_sender, line_receiver) = chan::sync(10_000);
@@ -47,14 +45,14 @@ fn run_index(directory: PathBuf, document_source: DocumentSource, num_threads: u
             line_sender.send(article_line);
         }
     });
+    
 
-    // using 3 threads to parse the json documents
-    for _ in 0..3 {
-
+    let num_threads_to_parse_json = cmp::max(1, num_threads / 2);
+    info!("Using {} threads to parse json", num_threads_to_parse_json);
+    for _ in 0..num_threads_to_parse_json {
         let schema_clone = schema.clone();
         let doc_sender_clone = doc_sender.clone();
         let line_receiver_clone = line_receiver.clone();
-
         thread::spawn(move || {
             for article_line in line_receiver_clone {
                 match schema_clone.parse_document(&article_line) {
@@ -73,10 +71,10 @@ fn run_index(directory: PathBuf, document_source: DocumentSource, num_threads: u
 
     let mut index_writer = try!(
         if num_threads > 0 {
-            index.writer_with_num_threads(num_threads)
+            index.writer_with_num_threads(num_threads, buffer_size_per_thread)
         }
         else {
-            index.writer()
+            index.writer(buffer_size_per_thread)
         }
     );
 
@@ -115,14 +113,11 @@ fn index_documents(index_writer: &mut IndexWriter, doc_receiver: chan::Receiver<
 }
 
 
-#[derive(Clone,Debug,RustcDecodable,RustcEncodable)]
-pub struct WikiArticle {
-    pub url: String,
-    pub title: String,
-    pub body: String,
+enum DocumentSource {
+    FromPipe,
+    FromFile(PathBuf),
 }
 
-
 impl DocumentSource {
     fn read(&self,) -> io::Result<BufReader<Box<Read>>> {
         Ok(match self {

src/commands/merge.rs

@@ -4,6 +4,8 @@ use tantivy::Index;
 use std::path::PathBuf;
 use clap::ArgMatches;
 
+const HEAP_SIZE: usize = 300_000_000;
+
 pub fn run_merge_cli(argmatch: &ArgMatches) -> Result<(), String> {
     let index_directory = PathBuf::from(argmatch.value_of("index").unwrap());
     run_merge(index_directory).map_err(|e| format!("Indexing failed : {:?}", e))
@@ -13,6 +15,6 @@ pub fn run_merge_cli(argmatch: &ArgMatches) -> Result<(), String> {
 fn run_merge(path: PathBuf) -> tantivy::Result<()> {
     let index = try!(Index::open(&path));
     let segments = try!(index.segments());
-    let mut index_writer = try!(index.writer());
+    let mut index_writer = try!(index.writer(HEAP_SIZE));
     index_writer.merge(&segments)
 }

src/commands/mod.rs

@@ -9,3 +9,4 @@ pub use self::index::run_index_cli;
 pub use self::serve::run_serve_cli;
 pub use self::bench::run_bench_cli;
 pub use self::merge::run_merge_cli;
+

src/commands/new.rs

@@ -12,9 +12,9 @@ use std::ascii::AsciiExt;
 use rustc_serialize::json;
 
 
-pub fn run_new_cli(matches: &ArgMatches) -> tantivy::Result<()> {
+pub fn run_new_cli(matches: &ArgMatches) -> Result<(), String> {
     let index_directory = PathBuf::from(matches.value_of("index").unwrap());
-    run_new(index_directory)   
+    run_new(index_directory).map_err(|e| format!("{:?}" , e))
 }
 
 

src/commands/serve.rs

@@ -38,7 +38,6 @@ use tantivy::Index;
 use tantivy::query::Explanation;
 use tantivy::query::Query;
 use tantivy::query::QueryParser;
-use tantivy::Result;
 use tantivy::schema::Field;
 use tantivy::schema::FieldType;
 use tantivy::schema::NamedFieldDocument;
@@ -46,12 +45,12 @@ use tantivy::schema::Schema;
 use tantivy::TimerTree;
 use urlencoded::UrlEncodedQuery;
 
-pub fn run_serve_cli(matches: &ArgMatches) -> tantivy::Result<()> {
+pub fn run_serve_cli(matches: &ArgMatches) -> Result<(), String> {
     let index_directory = PathBuf::from(matches.value_of("index").unwrap());
     let port = value_t!(matches, "port", u16).unwrap_or(3000u16);
     let host_str = matches.value_of("host").unwrap_or("localhost");
     let host = format!("{}:{}", host_str, port);
-    run_serve(index_directory, &host)   
+    run_serve(index_directory, &host).map_err(|e| format!("{:?}", e))
 }
 
 
@@ -109,7 +108,7 @@ impl IndexServer {
         }
     }
     
-    fn search(&self, q: String, num_hits: usize, explain:  bool) -> Result<Serp> {
+    fn search(&self, q: String, num_hits: usize, explain: bool) -> tantivy::Result<Serp> {
         let query = self.query_parser.parse_query(&q).unwrap();
         let searcher = self.index.searcher();
         let mut count_collector = CountCollector::new();

src/main.rs

@@ -2,6 +2,9 @@
 extern crate clap;
 #[macro_use]
 extern crate rustc_serialize;
+#[macro_use]
+extern crate log;
+extern crate env_logger;
 extern crate tantivy;
 extern crate time;
 extern crate persistent;
@@ -11,6 +14,8 @@ extern crate chan;
 extern crate staticfile;
 extern crate ansi_term;
 extern crate mount;
+extern crate bincode;
+extern crate byteorder;
 
 use clap::{AppSettings, Arg, App, SubCommand};
 mod commands;
@@ -18,6 +23,9 @@ use self::commands::*;
 
 
 fn main() {
+    
+    env_logger::init().unwrap();
+    
     let index_arg = Arg::with_name("index")
                     .short("i")
                     .long("index")
@@ -67,6 +75,12 @@ fn main() {
                     .value_name("num_threads")
                     .help("Number of indexing thread. By default num cores - 1 will be used")
                     .default_value("0"))
+                .arg(Arg::with_name("memory_size")
+                    .short("m")
+                    .long("memory_size")
+                    .value_name("memory_size")
+                    .help("Total memory_size in bytes. It will be split for the different threads.")
+                    .default_value("100000000"))
         )
         .subcommand(
             SubCommand::with_name("bench")
@@ -93,21 +107,14 @@ fn main() {
         .get_matches();
 
     let (subcommand, some_options) = cli_options.subcommand();
-
     let options = some_options.unwrap();
-
-    match subcommand {
-        "new" => run_new_cli(options).unwrap(),
-        "index" => run_index_cli(options).unwrap(),
-        "serve" => run_serve_cli(options).unwrap(),
-        "merge" => run_merge_cli(options).unwrap(),
-        "bench" => {
-            let res = run_bench_cli(options);
-            match res {
-                Err(e) => { println!("{}", e);}
-                _ => {}
-            }
-        },
-        _ => {}
-    }
+    let run_cli = match subcommand {
+        "new" => run_new_cli,
+        "index" => run_index_cli,
+        "serve" => run_serve_cli,
+        "merge" => run_merge_cli,
+        "bench" => run_bench_cli,
+        _ => panic!("Subcommand {} is unknown", subcommand)
+    };
+    run_cli(options).unwrap();
 }