pp.190 - 192
p.190 Webフレームワークのセットアップ
PS work> cargo new todo
Created binary (application) `todo` package
PS work> cd todo
PS work/todo> cargo add actix-web actix-rt
Updating 'https://github.com/rust-lang/crates.io-index' index
remote: Enumerating objects: 1467, done.
remote: Counting objects: 100% (1467/1467), done.
remote: Compressing objects: 100% (129/129), done.
Rremote: Total 2037 (delta 1409), reused 1393 (delta 1336), pack-reused 570
Receiving objects: 100% (2037/2037), 825.43 KiB | 1.87 MiB/s, done.
Resolving deltas: 100% (1446/1446), completed with 376 local objects.
From https://github.com/rust-lang/crates.io-index
2092a0fa4..c44091585 master -> origin/master
Adding actix-web v2.0.0 to dependencies
Adding actix-rt v1.1.1 to dependencies
PS work/todo>
1分かかるかかからないか?Rustは関連ツールも動作が軽快な印象がある。
Cargo.tomlに以下の通り、追記される。
Cargo.toml
[dependencies]
actix-web = "2.0.0"
actix-rt = "1.1.1"
p.192 src/main.rs
src/main.rs
use actix_web::{get, App, HttpResponse, HttpServer};
#[get("/")]
async fn index() -> Result<HttpResponse, actix_web::Error> {
let response_body = "Hello world!";
Ok(HttpResponse::Ok().body(response_body))
}
#[actix_rt::main]
async fn main() -> Result<(), actix_web::Error> {
HttpServer::new(move || App::new().service(index))
.bind("0.0.0.0:8008")?
.run()
.await?;
Ok(())
}
苦痛ではない記述量。asyncとか、本格的なサービス構築時にありがたい機能がある。
事前調査として、Sinatra(Ruby)でも実験したのが以下のコード。さすがに信じられないくらい短い。
myapp.rb
require 'sinatra'
set :bind, '0.0.0.0'
get '/' do
'Hello world!'
end
p.192 cargo run
197個のモジュールのコンパイルの後に、サービスが起動する。
PS work/todo> cargo run
Compiling proc-macro2 v1.0.19
Compiling unicode-xid v0.2.1
Compiling syn v1.0.39
Compiling cfg-if v0.1.10
Compiling winapi v0.3.9
Compiling memchr v2.3.3
Compiling winapi-build v0.1.1
Compiling libc v0.2.76
Compiling log v0.4.11
Compiling lazy_static v1.4.0
Compiling futures-core v0.3.5
Compiling slab v0.4.2
Compiling futures-sink v0.3.5
Compiling winapi v0.2.8
Compiling bytes v0.5.6
Compiling pin-project-internal v0.4.23
Compiling proc-macro-nested v0.1.6
Compiling iovec v0.1.4
Compiling proc-macro-hack v0.5.18
Compiling once_cell v1.4.1
Compiling autocfg v1.0.1
Compiling pin-project-lite v0.1.7
Compiling pin-utils v0.1.0
Compiling futures-io v0.3.5
Compiling smallvec v1.4.2
Compiling instant v0.1.6
Compiling scopeguard v1.1.0
Compiling bitflags v1.2.1
Compiling getrandom v0.1.14
Compiling matches v0.1.8
Compiling tinyvec v0.3.4
Compiling adler v0.2.3
Compiling serde_derive v1.0.115
Compiling failure_derive v0.1.8
Compiling copyless v0.1.5
Compiling itoa v0.4.6
Compiling gimli v0.22.0
Compiling serde v1.0.115
Compiling percent-encoding v2.1.0
Compiling either v1.6.0
Compiling ppv-lite86 v0.2.9
Compiling rustc-demangle v0.1.16
Compiling object v0.20.0
Compiling unicode-segmentation v1.6.0
Compiling match_cfg v0.1.0
Compiling ipconfig v0.2.2
Compiling fnv v1.0.7
Compiling cc v1.0.59
Compiling linked-hash-map v0.5.3
Compiling crc32fast v1.2.0
Compiling widestring v0.4.2
Compiling byteorder v1.3.4
Compiling quick-error v1.2.3
Compiling ryu v1.0.5
Compiling regex-syntax v0.6.18
Compiling serde_json v1.0.57
Compiling encoding_rs v0.8.24
Compiling httparse v1.3.4
Compiling dtoa v0.4.6
Compiling mime v0.3.16
Compiling base64 v0.11.0
Compiling sha1 v0.6.0
Compiling language-tags v0.2.2
Compiling mio-uds v0.6.8
Compiling ws2_32-sys v0.2.1
Compiling kernel32-sys v0.2.2
Compiling thread_local v1.0.1
Compiling tracing-core v0.1.15
Compiling futures-channel v0.3.5
Compiling bytestring v0.1.5
Compiling futures-task v0.3.5
Compiling num-traits v0.2.12
Compiling hashbrown v0.8.2
Compiling num-integer v0.1.43
Compiling indexmap v1.5.2
Compiling lock_api v0.4.1
Compiling unicode-bidi v0.3.4
Compiling miniz_oxide v0.4.1
Compiling unicode-normalization v0.1.13
Compiling heck v0.3.1
Compiling addr2line v0.13.0
Compiling http v0.2.1
Compiling lru-cache v0.1.2
Compiling brotli-sys v0.3.2
Compiling idna v0.2.0
Compiling aho-corasick v0.7.13
Compiling quote v1.0.7
Compiling tracing v0.1.19
Compiling num_cpus v1.13.0
Compiling backtrace v0.3.50
Compiling rand_core v0.5.1
Compiling flate2 v1.0.17
Compiling url v2.1.1
Compiling fxhash v0.2.1
Compiling net2 v0.2.34
Compiling parking_lot_core v0.8.0
Compiling socket2 v0.3.12
Compiling hostname v0.3.1
Compiling winreg v0.6.2
Compiling time v0.1.44
Compiling regex v1.3.9
Compiling threadpool v1.8.1
Compiling rand_chacha v0.2.2
Compiling miow v0.2.1
Compiling parking_lot v0.11.0
Compiling resolv-conf v0.6.3
Compiling brotli2 v0.3.2
Compiling chrono v0.4.15
Compiling rand v0.7.3
Compiling mio v0.6.22
Compiling synstructure v0.12.4
Compiling tokio v0.2.22
Compiling futures-macro v0.3.5
Compiling derive_more v0.99.9
Compiling actix-macros v0.1.2
Compiling async-trait v0.1.40
Compiling enum-as-inner v0.3.3
Compiling actix-web-codegen v0.2.2
Compiling tokio-util v0.2.0
Compiling tokio-util v0.3.1
Compiling pin-project v0.4.23
Compiling failure v0.1.8
Compiling actix-threadpool v0.3.3
Compiling actix-codec v0.2.0
Compiling futures-util v0.3.5
Compiling futures-executor v0.3.5
Compiling actix-rt v1.1.1
Compiling actix-service v1.0.6
Compiling h2 v0.2.6
Compiling futures v0.3.5
Compiling actix-utils v1.0.6
Compiling trust-dns-proto v0.18.0-alpha.2
Compiling serde_urlencoded v0.6.1
Compiling actix-router v0.2.4
Compiling actix-server v1.0.3
Compiling actix-tls v1.0.0
Compiling trust-dns-resolver v0.18.0-alpha.2
Compiling actix-testing v1.0.1
Compiling actix-connect v1.0.2
Compiling actix-http v1.0.1
Compiling awc v1.0.1
Compiling actix-web v2.0.0
Compiling todo v0.1.0 (work/todo)
Finished dev [unoptimized + debuginfo] target(s) in 3m 04s
Running `target/debug/todo.exe`
cargo new todoをしてから10分でここまでいける(もちろん使用PCのスペックの差はある)。この軽快さならば、REST APIをリリースした時にも、作業対応速度を十分稼げる。