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<h1 class="single">
  <span><a id="jumper" href="#jumpto" title="Un peu perdu ?">?</a></span>
  Specifications and APIs
  <time>Publié le 15 septembre 2016</time>
</h1>
<article class="single">
  <blockquote>
<p>One does simply not generate specifications from code.</p>
<p><cite><a href="http://www.bizcoder.com/">Darrell Miller</a>, <a href="http://www.meetup.com/fr-FR/api-montreal/events/233496023/?eventId=233496023">OpenAPI 3.0 - The evolution of a success story</a> (I cannot remember the exact sentence so I meme-ize it, sorry)</cite></p>
</blockquote>
<p><a href="https://openapis.org/">OpenAPI</a> 3.0 is the new rebranded, improved and community-driven <a href="http://swagger.io/">Swagger</a> <a href="https://github.com/OAI/OpenAPI-Specification">specification</a>, a way to interface an HTTP API. It was interesting to get an overview of what’s new and currently discussed on the specification itself but a question from the audience had all my attention because I felt highly concerned with the work we’re doing at <a href="https://www.data.gouv.fr/">data.gouv.fr</a> using Swagger for the API. The case described — generating the Swa^WOpenAPI file directly from (Python) code — is exactly our process to <a href="https://www.data.gouv.fr/fr/apidoc/">document the API</a> and even consume it on the JS side.</p>
<p>That was the moment Darrell made a break and explained that you have to <em>take care</em> of your specification/contract; it has to be hand-written, not generated. That’s what killed SOAP with the complexity added by automated generators (and consumers). That made me think about the ascendant relation of an API with the server taking all responsibilities and clients which are accepting constraints. It doesn’t have to be that way. When you write the documentation of your API you take the time to think about the necessity of a given resource or verb. You can define an API based on actual needs from clients. You take the time to check your analytics to deprecate unused resources and so on.</p>
<p><strong>To me an API is a discussion between involved parties.</strong> They should share responsibilities and constraints over time like in any relation. There is no such thing as engraved endpoints and we should be better at versioning these relations to lead towards the best paths for both sides. We can avoid performing <a href="http://githubengineering.com/the-github-graphql-api/">many requests</a> (<a href="/david/cache/d9457ea0fba660a5011e8671f44f212c/">cache</a>) for a given action, this is adaptation to a given context but it has to be discussed and constantly challenged. <em>The other way around is something as generalist and unoptimized as GraphQL.</em> Everybody is enthusiast about that shiny-new-Facebook technology because they lack communication skills and they hope that it will avoid that necessary conversation between developers on both ends. It will just add an extra layer of complexity.</p>
<p>That being said, I’ve been a long-time advocate of REST/hypermedia which is another way to avoid that discussion too. Today I’m more inclined to focus on a few pertinent scenarios. Maybe is it related to a change in my personality with more empathy for my peers? :-)</p>
<blockquote>
<p>You don’t pay engineers to write code, you pay them to understand subtleties and edges of the problem. The code is incidental.</p>
<p><cite>Ted Dziuba</cite></p>
</blockquote>
</article>


  <figure class="image" property="schema:image">
    <img src="/static/david/blog/2016/specifications-apis.jpg" alt="" />
  </figure>


<nav id="jumpto">
  <p>
    <a rel=prev href="/david/blog/2016/expatriation-choisie/">← Expatriation choisie</a> | <a href="/david/blog/" title="Retour à la liste des expériences">↑</a> | <a rel=next href="/david/blog/2016/communities-leadership/">Communities and leadership →</a>
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    <p>
      Bonjour/Hi!
      Je suis <a href="/david/" title="Profil public">David&nbsp;Larlet</a>, je vis actuellement à Montréal et j’alimente cet espace depuis 15 ans. <br>
      Si tu as apprécié cette lecture, n’hésite pas à poursuivre ton exploration. Par exemple via les <a href="/david/blog/" title="Expériences bienveillantes">réflexions bimestrielles</a>, la <a href="/david/stream/2019/" title="Pensées (dés)articulées">veille hebdomadaire</a> ou en t’abonnant au <a href="/david/log/" title="S’abonner aux publications via RSS">flux RSS</a> (<a href="/david/blog/2019/flux-rss/" title="Tiens c’est quoi un flux RSS ?">so 2005</a>).
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            <a href="/david/stream/2019/03/15/">Reconnaissance</a>
          </li>

          <li>
            <a href="/david/stream/2019/03/08/">Lecture</a>
          </li>

          <li>
            <a href="/david/stream/2019/03/01/">Journaux</a>
          </li>

          <li>
            <a href="/david/stream/2019/02/22/">Écriture</a>
          </li>

          <li>
            <a href="/david/stream/2019/02/15/">Kyriarchie</a>
          </li>

          <li>
            <a href="/david/stream/2019/02/08/">Mots-serrures</a>
          </li>

          <li>
            <a href="/david/stream/2019/02/01/">Sans voie</a>
          </li>

          <li>
            <a href="/david/stream/2019/01/25/">Auto-diagnostic</a>
          </li>

          <li>
            <a href="/david/stream/2019/01/18/">Agilité</a>
          </li>

          <li>
            <a href="/david/stream/2019/01/11/">Métaphores</a>
          </li>

          <li>
            <a href="/david/stream/2019/01/04/">Balbutiements</a>
          </li>

      </ul>

    <p>
      Voici quelques articles choisis :
      <a href="/david/blog/2019/faire-equipe/" title="Accéder à l’article complet">Faire équipe</a>,
      <a href="/david/blog/2018/bivouac-automnal/" title="Accéder à l’article complet">Bivouac automnal</a>,
      <a href="/david/blog/2018/commodite-effondrement/" title="Accéder à l’article complet">Commodité et effondrement</a>,
      <a href="/david/blog/2017/donnees-communs/" title="Accéder à l’article complet">Des données aux communs</a>,
      <a href="/david/blog/2016/accompagner-enfant/" title="Accéder à l’article complet">Accompagner un enfant</a>,
      <a href="/david/blog/2016/senior-developer/" title="Accéder à l’article complet">Senior developer</a>,
      <a href="/david/blog/2016/illusion-sociale/" title="Accéder à l’article complet">L’illusion sociale</a>,
      <a href="/david/blog/2016/instantane-scopyleft/" title="Accéder à l’article complet">Instantané Scopyleft</a>,
      <a href="/david/blog/2016/enseigner-web/" title="Accéder à l’article complet">Enseigner le Web</a>,
      <a href="/david/blog/2016/simplicite-defaut/" title="Accéder à l’article complet">Simplicité par défaut</a>,
      <a href="/david/blog/2016/minimalisme-esthetique/" title="Accéder à l’article complet">Minimalisme et esthétique</a>,
      <a href="/david/blog/2014/un-web-omni-present/" title="Accéder à l’article complet">Un web omni-présent</a>,
      <a href="/david/blog/2014/manifeste-developpeur/" title="Accéder à l’article complet">Manifeste de développeur</a>,
      <a href="/david/blog/2013/confort-convivialite/" title="Accéder à l’article complet">Confort et convivialité</a>,
      <a href="/david/blog/2013/testament-numerique/" title="Accéder à l’article complet">Testament numérique</a>,
      et <a href="/david/blog/" title="Accéder aux archives">bien d’autres…</a>
    </p>
    <p>
      On peut <a href="mailto:david%40larlet.fr" title="Envoyer un courriel">échanger par courriel</a>. Si éventuellement tu souhaites que l’on travaille ensemble, tu devrais commencer par consulter le <a href="http://larlet.com">profil dédié à mon activité professionnelle</a> et/ou contacter directement <a href="http://scopyleft.fr/">scopyleft</a>, la <abbr title="Société coopérative et participative">SCOP</abbr> dont je fais partie depuis six ans. Je recommande au préalable de lire <a href="/david/blog/2018/cout-site/" title="Attention ce qui va suivre peut vous choquer">combien coûte un site</a> et pourquoi je suis plutôt favorable à une <a href="/david/pro/devis/" title="Discutons-en !">non-demande de devis</a>.
    </p>
    <p>
      Je ne traque pas ta navigation mais mon
      <abbr title="Alwaysdata, 62 rue Tiquetonne 75002 Paris, +33.184162340">hébergeur</abbr>
      conserve des logs d’accès.
    </p>
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