Browse Source

ActivityPub half-way

master
Julio Biason 4 years ago
parent
commit
43e03b34c3
  1. 328
      _images/ActivityPub-logo.svg
  2. BIN
      _images/activitypub-logo.png
  3. BIN
      _images/all-eggs-broken.jpeg
  4. BIN
      _images/all-eggs.jpeg
  5. BIN
      _images/email.png
  6. BIN
      _images/federation.png
  7. BIN
      _images/internet.jpeg
  8. BIN
      _images/silo.jpeg
  9. BIN
      _images/socializing.jpeg
  10. BIN
      _images/xmpp.png
  11. 411
      activitypub.html

328
_images/ActivityPub-logo.svg

@ -0,0 +1,328 @@
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411
activitypub.html

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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>ActivityPub</title>
<meta name="description" content="Por que você deveria aprender Rust">
<meta name="author" content="Julio Biason">
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<body>
<div class="reveal">
<div class="slides">
<section>
<section data-background="_images/activitypub-logo.png" data-header>
<h2 class="semi-opaque">ActivityPub</h2>
</section>
</section>
<section>
<section>
<img src="_images/avatar-20170726.png" alt="Me" style="float:left;width:200px;" class="no-border">
<div>
<ul class="empty">
<li>Júlio Biason</li>
<li><a href="https://functional.cafe/@juliobiason">https://functional.cafe/@juliobiason</a></li>
<li><a href="https://t.me/juliobiason">https://t.me/juliobiason</a></li>
<li>julio.biason@pm.me</li>
<li><a href="http://presentations.juliobiason.net">http://presentations.juliobiason.net</a></li>
</ul>
</div>
</section>
</section>
<section>
<section>
<img class="stretch" src="_images/internet.jpeg" alt="">
<aside class="notes">
Para entender ActivityPub -- e porque ele existe --
precisamos dar um passo atrás e entender a internet.
A internet foi criada para ser "anarquica", no
sentido que não haveria um ponto central; se algum
ponto da rede fosse destruído por uma bomba nuclear
(porque assim eram os anos 60), outros pontos
continuariam funcionando.
</aside>
</section>
<section>
<img class="stretch" src="_images/federation.png" title="(do latim: foederatio, de foedus: “liga, tratado, aliança”) ou Estado Federal é um Estado composto por diversas entidades territoriais autônomas dotadas de governo próprio.">
<aside class="notes">
De certa forma, as coisas funcionavam de forma
"federada", cuja definição do dicionário para
"federação" é: "(do latim: foederatio, de foedus:
“liga, tratado, aliança”) ou Estado Federal é um
Estado composto por diversas entidades territoriais
autônomas dotadas de governo próprio."
(E como eu sou fã de Jornada nas Estrelas, eu
sempre lembro da "Federação dos Planetas Unidos",
que tinha o mesmo significado: vários planetas,
cada um com suas políticas, mas cada um funcionando
da forma que quisesse.)
</aside>
</section>
<section>
<img class="stretch" src="_images/email.png" alt="">
<aside class="notes">
Um dos exemplos mais básicos de federação ainda em
uso é o email: Existem vários servidores/serviços
de email por aí, cada um tem suas definições do que
é spam (ou como um email é definido como "spam"),
quotas de espaço, aliases -- enfim, uma série de
políticas -- mas os serviços conversam entre si
para garantir que todos possam receber emails,
mesmo estando em serviços (com políticas)
diferentes.
</aside>
</section>
<section>
<img class="stretch" src="_images/xmpp.png" alt="">
<aside class="notes">
Outro exemplo de federação é o XMPP, um protocolo
criado para comunicação instantânea que era
utilizado pelo Hangouts a muito tempo (hoje não é
mais, é um protocolo fechado).
</aside>
</section>
</section>
<section>
<section>
<img class="stretch" src="_images/silo.jpeg" alt="">
<aside class="notes">
Infelizmente, a pouco tempo (em termos de tempo
de vida de internet), o modelo começou a mudar
para um modelo de "Silos", onde tudo fica no mesmo
lugar (mesmo que o "mesmo lugar" sejam vários
computadores em vários lugares).
A ideia de coisas com "políticas diferentes que
trabalham em forma de aliança" foi esquecida e
agora boa parte das coisas que nós queremos
compartilhar acaba ficando sob uma única política.
</aside>
</section>
<section>
<img class="stretch" src="_images/all-eggs.jpeg" alt="">
<aside class="notes">
Basicamente estamos colocando todos os ovos no
mesmo sesto.
</aside>
</section>
<section>
<img class="stretch" src="_images/all-eggs-broken.jpeg" alt="">
<aside class="notes">
Basta lembrar o que acontece toda vez que algum
juiz diz que é para bloquear o WhatsApp.
(O resultado é que explodem os cadastros no
Telegram, que sofre do mesmo problema.)
</aside>
</section>
</section>
<section>
<section>
<img class="stretch white" src="_images/ActivityPub-logo.svg" alt="">
<aside class="notes">
E assim como temos o XMPP para conversas
instantâneas, temos o ActivityPub para ações
"sociais" -- no sentido de "coisas que fazemos com
nossas vidas".
</aside>
</section>
<section>
<img class="stretch" src="_images/socializing.jpeg" alt="">
<aside class="notes">
Apesar dos pesares, humanos são seres sociais e,
apesar dos pesares, a internet é uma forma de
socialização.
</aside>
</section>
<section>
<h4>Mas O Que é ActivityPub</h4>
<ul>
<li class="fragment">Protocolo certificado pela W3C.</li>
<li class="fragment">Baseado em HTTP e JSON.</li>
<li class="fragment">Tem vários conceitos iguais ao email.</li>
<li class="fragment">Composto de outros protolocos (como WebFinger, ActivityStreams, ActivityVocabulary e JSON-LD).</li>
</ul>
</section>
<section>
<h4>O Que é ActivityPub</h4>
<ul>
<li class="fragment">Actors <span class="fragment">(Person, Bot, Company)</span></li>
<li class="fragment">Notes</li>
<li class="fragment">Images</li>
<li class="fragment">Links</li>
<li class="fragment">(e mais, definidos no Vocabulary)</li>
</ul>
</section>
<section>
<h4>ActivityPub</h4>
<pre><code class="hljs json" data-trim>
{"@context": "https://www.w3.org/ns/activitystreams",
"type": "Person",
"id": "https://social.example/alyssa/",
"name": "Alyssa P. Hacker",
"preferredUsername": "alyssa",
"summary": "Lisp enthusiast hailing from MIT",
"inbox": "https://social.example/alyssa/inbox/",
"outbox": "https://social.example/alyssa/outbox/",
"followers": "https://social.example/alyssa/followers/",
"following": "https://social.example/alyssa/following/",
"liked": "https://social.example/alyssa/liked/"}
</code></pre>
</section>
<section>
<h4>ActivityPub</h4>
<pre><code class="hljs json" data-trim>
{"@context": "https://www.w3.org/ns/activitystreams",
"type": "Create",
"id": "https://social.example/alyssa/posts/a29a6843",
"to": ["https://chatty.example/ben/"],
"actor": "https://social.example/alyssa/",
"object": {"type": "Note",
"id": "https://social.example/alyssa/posts/49e2d03d",
"attributedTo": "https://social.example/alyssa/",
"to": ["https://chatty.example/ben/"],
"content": "Did you finish reading that book?"}}
</code></pre>
</section>
<section>
<h4>ActivityPub</h4>
<pre><code class="hljs json" data-trim data-line-numbers="7">
{"@context": "https://www.w3.org/ns/activitystreams",
"type": "Person",
"id": "https://social.example/alyssa/",
"name": "Alyssa P. Hacker",
"preferredUsername": "alyssa",
"summary": "Lisp enthusiast hailing from MIT",
"inbox": "https://social.example/alyssa/inbox/",
"outbox": "https://social.example/alyssa/outbox/",
"followers": "https://social.example/alyssa/followers/",
"following": "https://social.example/alyssa/following/",
"liked": "https://social.example/alyssa/liked/"}
</code></pre>
</section>
<section>
<h4>ActivityPub</h4>
<pre><code class="hljs json" data-trim data-line-numbers="8">
{"@context": "https://www.w3.org/ns/activitystreams",
"type": "Person",
"id": "https://social.example/alyssa/",
"name": "Alyssa P. Hacker",
"preferredUsername": "alyssa",
"summary": "Lisp enthusiast hailing from MIT",
"inbox": "https://social.example/alyssa/inbox/",
"outbox": "https://social.example/alyssa/outbox/",
"followers": "https://social.example/alyssa/followers/",
"following": "https://social.example/alyssa/following/",
"liked": "https://social.example/alyssa/liked/"}
</code></pre>
</section>
<section>
<h4>ActivityPub</h4>
<pre><code class="hljs json" data-trim data-line-numbers="9">
{"@context": "https://www.w3.org/ns/activitystreams",
"type": "Person",
"id": "https://social.example/alyssa/",
"name": "Alyssa P. Hacker",
"preferredUsername": "alyssa",
"summary": "Lisp enthusiast hailing from MIT",
"inbox": "https://social.example/alyssa/inbox/",
"outbox": "https://social.example/alyssa/outbox/",
"followers": "https://social.example/alyssa/followers/",
"following": "https://social.example/alyssa/following/",
"liked": "https://social.example/alyssa/liked/"}
</code></pre>
</section>
<section>
<h4>ActivityPub</h4>
<pre><code class="hljs json" data-trim data-line-numbers="10">
{"@context": "https://www.w3.org/ns/activitystreams",
"type": "Person",
"id": "https://social.example/alyssa/",
"name": "Alyssa P. Hacker",
"preferredUsername": "alyssa",
"summary": "Lisp enthusiast hailing from MIT",
"inbox": "https://social.example/alyssa/inbox/",
"outbox": "https://social.example/alyssa/outbox/",
"followers": "https://social.example/alyssa/followers/",
"following": "https://social.example/alyssa/following/",
"liked": "https://social.example/alyssa/liked/"}
</code></pre>
</section>
<section>
<h4>ActivityPub</h4>
<pre><code class="hljs json" data-trim data-line-numbers="11">
{"@context": "https://www.w3.org/ns/activitystreams",
"type": "Person",
"id": "https://social.example/alyssa/",
"name": "Alyssa P. Hacker",
"preferredUsername": "alyssa",
"summary": "Lisp enthusiast hailing from MIT",
"inbox": "https://social.example/alyssa/inbox/",
"outbox": "https://social.example/alyssa/outbox/",
"followers": "https://social.example/alyssa/followers/",
"following": "https://social.example/alyssa/following/",
"liked": "https://social.example/alyssa/liked/"}
</code></pre>
</section>
</section>
<section data-background='_images/thats-all-folks.jpg'>
<div class="semi-opaque">
<ul class="empty">
<li><a href="https://functional.cafe/@juliobiason">https://functional.cafe/@juliobiason</a></li>
<li><a href="https://t.me/juliobiason">https://t.me/juliobiason</a></li>
<li>julio.biason@pm.me</li>
<li><a href="http://presentations.juliobiason.net">http://presentations.juliobiason.net</a></li>
</ul>
</div>
</section>
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