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194 lines
5.6 KiB
194 lines
5.6 KiB
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<title>ReST - Restructured State Transfer</title> |
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<meta name="author" content="Julio Biason"> |
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<div class="reveal"> |
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<section> |
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<h1>ReST</h1> |
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<h4>Restructured State Transfer</h4> |
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</section> |
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<ul> |
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<li>Criado por Roy Fielding em 2000.</li> |
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<li>Fielding trabalhou na definição do HTTP e no início do projeto Apache.</li> |
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</ul> |
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</section> |
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<section> <!-- data-background="../_images/l-What-is-this-sorcery.jpg"> --> |
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<section> |
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<h2>O que é ReST?</h2> |
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<img src='../_images/l-What-is-this-sorcery.jpg'></img> |
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<p> |
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É uma "arquitetura de transmissão de dados sobre HTTP. |
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</p> |
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("Conjunto de idéias para utilizar HTTP para geração de APIs.") |
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</p> |
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</section> |
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<section> |
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<p> |
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Linguagem? Qualquer! |
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</p> |
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<ul> |
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<li>Python: Flask, Django, Flask-Restless, Django Rest Framework</li> |
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<li>Ruby: Ruby on Rails, Sinatra</li> |
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<li>Java: Spring, Restlet, Jersey</li> |
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<li>C#: Ramone</li> |
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<li>Nodejs: Express</li> |
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<li>Rust: Rustful</li> |
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</dl> |
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</section> |
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</section> |
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<section> |
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<section> |
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<h2>ReST e HTTP</h2> |
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<img src='../_images/20090504102402_dsc_2864 (1).jpg'></img> |
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<li>Métodos HTTP = operação de banco de dados (CRUD).</li> |
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<li>Status das operações são status HTTP.</li> |
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<li>Meta-informações podem ser enviadas nos headers. |
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<ul> |
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<li>Atenticação é feita por HTTP auth.</li> |
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</ul> |
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</li> |
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<li>Sem transações/sessões -- todas as operações são atômicas.</li> |
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</ul> |
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</section> |
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<section> |
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Em HTTP, usam-se métodos para descrever o que quer ser feito: |
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<li><tt>POST</tt> requisita informações, com conteúdo.</li> |
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<li><tt>GET</tt> requisita informações, sem conteúdo.</li> |
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</ul> |
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<p class='fragment'>(Ainda: PUT, DELETE, HEAD, TRACE, PATCH, OPTIONS)</p> |
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</section> |
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<section> |
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<p> |
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Em ReST, métodos HTTP viram CRUD: |
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</p> |
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<ul> |
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<li>Create ⇒ POST</li> |
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<li>Retrieve ⇒ GET</li> |
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<li>Update ⇒ PUT</li> |
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<li>Delete ⇒ DELETE</li> |
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<li class='fragment'>Update ⇒ PATCH</li> |
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</ul> |
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</section> |
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</section> |
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<section> |
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<section> |
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<h2>Recursos</h2> |
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<img src='../_images/jellybeans.jpg'></img> |
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</section> |
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<section> |
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<ul> |
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<li>Em ReST, as "tabelas" são chamadas "recursos".</li> |
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<li>Sempre substantivos no plural.</li> |
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<li>Duas URLs por recurso |
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<ul> |
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<li>Uma para o conjunto;</li> |
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<li>Uma para elementos específicos.</li> |
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</ul> |
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</li> |
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</ul> |
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</section> |
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