clean: Remove statics and use Arcs

Cargo.lock

@@ -21,6 +21,14 @@ dependencies = [
  "memmap 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "levenshtein_automata"
+version = "0.1.0"
+source = "git+https://github.com/Kerollmops/levenshtein-automata.git?branch=custom-fst#5e8183a7634c4a0182ea7bb398140b2fe9854f77"
+dependencies = [
+ "fst 0.3.0 (git+https://github.com/Kerollmops/fst.git?branch=op-builder-with-state)",
+]
+
 [[package]]
 name = "libc"
 version = "0.2.40"
@@ -57,6 +65,7 @@ version = "0.1.0"
 dependencies = [
  "bincode 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "fst 0.3.0 (git+https://github.com/Kerollmops/fst.git?branch=op-builder-with-state)",
+ "levenshtein_automata 0.1.0 (git+https://github.com/Kerollmops/levenshtein-automata.git?branch=custom-fst)",
  "serde 1.0.54 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.54 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -114,6 +123,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum bincode 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bda13183df33055cbb84b847becce220d392df502ebe7a4a78d7021771ed94d0"
 "checksum byteorder 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "73b5bdfe7ee3ad0b99c9801d58807a9dbc9e09196365b0203853b99889ab3c87"
 "checksum fst 0.3.0 (git+https://github.com/Kerollmops/fst.git?branch=op-builder-with-state)" = "<none>"
+"checksum levenshtein_automata 0.1.0 (git+https://github.com/Kerollmops/levenshtein-automata.git?branch=custom-fst)" = "<none>"
 "checksum libc 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)" = "6fd41f331ac7c5b8ac259b8bf82c75c0fb2e469bbf37d2becbba9a6a2221965b"
 "checksum memmap 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e2ffa2c986de11a9df78620c01eeaaf27d94d3ff02bf81bfcca953102dd0c6ff"
 "checksum proc-macro2 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "1b06e2f335f48d24442b35a19df506a835fb3547bc3c06ef27340da9acf5cae7"

Cargo.toml

@@ -11,3 +11,8 @@ serde_derive = "1.0"
 [dependencies.fst]
 git = "https://github.com/Kerollmops/fst.git"
 branch = "op-builder-with-state"
+
+[dependencies.levenshtein_automata]
+git = "https://github.com/Kerollmops/levenshtein-automata.git"
+branch = "custom-fst"
+features = ["fst_automaton"]

raptor-http/Cargo.lock

@@ -80,6 +80,7 @@ dependencies = [
 [[package]]
 name = "fst"
 version = "0.3.0"
+source = "git+https://github.com/Kerollmops/fst.git?branch=op-builder-with-state#6e0ab4e4ee5443cc55079996bf9f703086322c33"
 dependencies = [
  "byteorder 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "memmap 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -150,8 +151,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "levenshtein_automata"
 version = "0.1.0"
+source = "git+https://github.com/Kerollmops/levenshtein-automata.git?branch=custom-fst#5e8183a7634c4a0182ea7bb398140b2fe9854f77"
 dependencies = [
- "fst 0.3.0",
+ "fst 0.3.0 (git+https://github.com/Kerollmops/fst.git?branch=op-builder-with-state)",
 ]
 
 [[package]]
@@ -292,7 +294,8 @@ name = "raptor"
 version = "0.1.0"
 dependencies = [
  "bincode 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "fst 0.3.0",
+ "fst 0.3.0 (git+https://github.com/Kerollmops/fst.git?branch=op-builder-with-state)",
+ "levenshtein_automata 0.1.0 (git+https://github.com/Kerollmops/levenshtein-automata.git?branch=custom-fst)",
  "serde 1.0.54 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.54 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -302,9 +305,8 @@ name = "raptor-http"
 version = "0.1.0"
 dependencies = [
  "env_logger 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "fst 0.3.0",
+ "fst 0.3.0 (git+https://github.com/Kerollmops/fst.git?branch=op-builder-with-state)",
  "futures 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)",
- "levenshtein_automata 0.1.0",
  "raptor 0.1.0",
  "serde 1.0.54 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.54 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -627,6 +629,7 @@ dependencies = [
 "checksum crossbeam-epoch 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9b4e2817eb773f770dcb294127c011e22771899c21d18fce7dd739c0b9832e81"
 "checksum crossbeam-utils 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "d636a8b3bcc1b409d7ffd3facef8f21dcb4009626adbd0c5e6c4305c07253c7b"
 "checksum env_logger 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "15abd780e45b3ea4f76b4e9a26ff4843258dd8a3eed2775a0e7368c2e7936c2f"
+"checksum fst 0.3.0 (git+https://github.com/Kerollmops/fst.git?branch=op-builder-with-state)" = "<none>"
 "checksum fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2e9763c69ebaae630ba35f74888db465e49e259ba1bc0eda7d06f4a067615d82"
 "checksum fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
 "checksum futures 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)" = "1a70b146671de62ec8c8ed572219ca5d594d9b06c0b364d5e67b722fc559b48c"
@@ -636,6 +639,7 @@ dependencies = [
 "checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
 "checksum lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c8f31047daa365f19be14b47c29df4f7c3b581832407daabe6ae77397619237d"
 "checksum lazycell 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a6f08839bc70ef4a3fe1d566d5350f519c5912ea86be0df1740a7d247c7fc0ef"
+"checksum levenshtein_automata 0.1.0 (git+https://github.com/Kerollmops/levenshtein-automata.git?branch=custom-fst)" = "<none>"
 "checksum libc 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)" = "6fd41f331ac7c5b8ac259b8bf82c75c0fb2e469bbf37d2becbba9a6a2221965b"
 "checksum log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "e19e8d5c34a3e0e2223db8e060f9e8264aeeb5c5fc64a4ee9965c062211c024b"
 "checksum log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "89f010e843f2b1a31dbd316b3b8d443758bc634bed37aabade59c686d644e0a2"

raptor-http/Cargo.toml

@@ -14,11 +14,6 @@ tokio-proto = "0.1"
 tokio-service = "0.1"
 url = "1.7"
 
-[dependencies.levenshtein_automata]
-git = "https://github.com/Kerollmops/levenshtein-automata.git"
-branch = "custom-fst"
-features = ["fst"]
-
 [dependencies.fst]
 git = "https://github.com/Kerollmops/fst.git"
 branch = "op-builder-with-state"

raptor-http/src/main.rs

@@ -1,7 +1,6 @@
 extern crate env_logger;
 extern crate fst;
 extern crate futures;
-extern crate levenshtein_automata;
 extern crate raptor;
 extern crate tokio_minihttp;
 extern crate tokio_proto;
@@ -9,29 +8,22 @@ extern crate tokio_service;
 extern crate url;
 
 use std::{io, fs};
+use std::sync::Arc;
 
 use fst::Streamer;
 use futures::future;
-use levenshtein_automata::LevenshteinAutomatonBuilder as LevBuilder;
 use tokio_minihttp::{Request, Response, Http};
 use tokio_proto::TcpServer;
 use tokio_service::Service;
 
-use raptor::{Map, OpWithStateBuilder};
+use raptor::{Map, OpWithStateBuilder, LevBuilder};
 
-static mut MAP: Option<Map<u64>> = None;
+struct MainService {
-static mut LEV_BUILDER_0: Option<LevBuilder> = None;
+    map: Arc<Map<u64>>,
-static mut LEV_BUILDER_1: Option<LevBuilder> = None;
+    lev_builder: Arc<LevBuilder>,
-static mut LEV_BUILDER_2: Option<LevBuilder> = None;
-
-struct MainService<'a> {
-    map: &'a Map<u64>,
-    lev_builder_0: &'a LevBuilder,
-    lev_builder_1: &'a LevBuilder,
-    lev_builder_2: &'a LevBuilder,
 }
 
-impl<'a> Service for MainService<'a> {
+impl Service for MainService {
     type Request = Request;
     type Response = Response;
     type Error = io::Error;
@@ -52,13 +44,7 @@ impl<'a> Service for MainService<'a> {
             let mut automatons = Vec::new();
 
             for query in query.split_whitespace() {
-                let lev = if query.len() <= 4 {
+                let lev = self.lev_builder.build_automaton(query);
-                    self.lev_builder_0.build_dfa(&query)
-                } else if query.len() <= 8 {
-                    self.lev_builder_1.build_dfa(&query)
-                } else {
-                    self.lev_builder_2.build_dfa(&query)
-                };
                 automatons.push(lev);
             }
 
@@ -100,27 +86,18 @@ impl<'a> Service for MainService<'a> {
 fn main() {
     drop(env_logger::init());
 
-    // initialize all static variables
-    unsafe {
-        MAP = {
-            let map = fs::read("map.fst").unwrap();
-            let values = fs::read("values.vecs").unwrap();
-
-            Some(Map::from_bytes(map, &values).unwrap())
-        };
-        LEV_BUILDER_0 = Some(LevBuilder::new(0, false));
-        LEV_BUILDER_1 = Some(LevBuilder::new(1, false));
-        LEV_BUILDER_2 = Some(LevBuilder::new(2, false));
-    }
-
     let addr = "0.0.0.0:8080".parse().unwrap();
 
-    unsafe {
+    let lev_builder = Arc::new(LevBuilder::new());
-        TcpServer::new(Http, addr).serve(|| Ok(MainService {
+    let map = {
-            map: MAP.as_ref().unwrap(),
+        let fst = fs::read("map.fst").unwrap();
-            lev_builder_0: LEV_BUILDER_0.as_ref().unwrap(),
+        let values = fs::read("values.vecs").unwrap();
-            lev_builder_1: LEV_BUILDER_1.as_ref().unwrap(),
+        let map = Map::from_bytes(fst, &values).unwrap();
-            lev_builder_2: LEV_BUILDER_2.as_ref().unwrap(),
+        Arc::new(map)
-        }))
+    };
-    }
+
+    TcpServer::new(Http, addr).serve(move || Ok(MainService {
+        map: map.clone(),
+        lev_builder: lev_builder.clone(),
+    }))
 }

src/levenshtein.rs

@@ -0,0 +1,27 @@
+use levenshtein_automata::{LevenshteinAutomatonBuilder, DFA};
+
+pub struct LevBuilder {
+    automatons: [LevenshteinAutomatonBuilder; 3],
+}
+
+impl LevBuilder {
+    pub fn new() -> Self {
+        Self {
+            automatons: [
+                LevenshteinAutomatonBuilder::new(0, false),
+                LevenshteinAutomatonBuilder::new(1, false),
+                LevenshteinAutomatonBuilder::new(2, false),
+            ],
+        }
+    }
+
+    pub fn build_automaton(&self, query: &str) -> DFA {
+        if query.len() <= 4 {
+            self.automatons[0].build_dfa(query)
+        } else if query.len() <= 8 {
+            self.automatons[1].build_dfa(query)
+        } else {
+            self.automatons[2].build_dfa(query)
+        }
+    }
+}

src/lib.rs

@@ -1,12 +1,16 @@
 #[macro_use] extern crate serde_derive;
 extern crate bincode;
 extern crate fst;
+extern crate levenshtein_automata;
 extern crate serde;
 
 pub mod map;
+mod levenshtein;
 
 pub use self::map::{Map, MapBuilder, Values};
 pub use self::map::{
     OpBuilder, IndexedValues,
     OpWithStateBuilder, IndexedValuesWithState,
 };
+
+pub use self::levenshtein::LevBuilder;