August 2016
Intermediate to advanced
384 pages
9h 20m
Japanese
Content preview from Docker
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
88
6 章 シンプルな Web アプリケーションの作成
開発のこの時点で、自動化テストと、さらには継続的インテグレーション／デリバリまで導入し
ておくというのは、良い考えです。とはいえ、話の流れの都合上、もう少しアプリケーションの開
発を進めておき、テストや継続的インテグレーションはこの先の章で導入していくことにします。
6.2
既存のイメージの利用
このプログラムに、実際に何事かをさせる時が来ました。必要なのは、文字列を受け取る、固有
の画像を返す関数、もしくはサービスです。そして、それをユーザーが
Web
ページで入力した名
前を渡して呼び出し、今は壊れて表示されている画像のところを置き換えます。
ここでは、このために用意されている既存の
Docker
のイメージである
dnmonster
を使いま
す。
dnmonster
は、（おおまかに言えば）
RESTful
な
API
を公開してくれているので、それを使い
ます。
dnmonster
を他の
identicon
サービスに置き換えることも簡単です。特に、そのサービスが
RESTful
な
API
を公開しており、コンテナとしてパッケージ化されていれば、さらに簡単でしょ
う。
既存のコードから
dnmonster
を呼ぶには、いくつか変更を加えなければなりません。主な変更
は、新しく
get_identicon
という関数を追加することです。
from flask import Flask, Response
❶
import requests
❷
app = Flask(__name__)
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.