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| <title>Eclipse Ditto: an introduction</title> |
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| <meta name="author" content="Thomas Jäckle"> |
| <meta name="date" content="2021-06-28"> |
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| <div class="reveal"> |
| |
| <!-- 2. Create hidden header/footer <div> --> |
| <div id="hidden" style="display:none;"> |
| <div id="header"> |
| <div id="header-left"><img src="../../images/ditto.svg" style="width: 80px; padding-top: 10px; padding-left: 10px" alt="Ditto logo"></div> |
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| <!-- background source: https://unsplash.com/collections/425779/iot --> |
| <h1 style="line-height: 1em"> |
| <img src="../../images/iot_logo.svg" style="width: 15%;vertical-align: top; padding-right: 20px" alt="Eclipse IoT"> |
| <img src="../../images/ditto.svg" style="width: 15%;vertical-align: middle" alt="Eclipse Ditto"> |
| </h1> |
| <h1 style="margin-top: 0.6em; font-size: 2em;">Eclipse Ditto:<br/>an introduction</h1> |
| <h2 style="margin-top: 1.5em; font-size: 0.8em">06/2021</h2> |
| </section> |
| </section> |
| |
| <!-- Section: Digital Twins --> |
| <section style="clear: both;"> |
| <section id="twin" class="new-chapter" data-background="../bg-images/background-twin-small.jpg" |
| data-state="chapter-background"> |
| <!-- background source: https://unsplash.com/search/twin?photo=SmAiLn-nnJg --> |
| <h1>Digital Twins</h1> |
| <br/> |
| <ul> |
| <li class="fragment">digital representation of real physical devices</li> |
| <li class="fragment" style="margin-top: 1em;">act as broker for communicating with assets</li> |
| <li class="fragment" style="margin-top: 1em;">applicable for both industrial and consumer-centric IoT scenarios</li> |
| </ul> |
| </section> |
| <section id="twin-1" style="clear: both;"> |
| <h2>DT - our interpretation</h2> |
| <br/> |
| <ul> |
| <li class="fragment">a pattern for working with <b>things</b> in the IoT</li> |
| <li class="fragment" style="margin-top: 0.8em;">provide state <b>persistence</b> and <b>search</b> capabilities</li> |
| <li class="fragment" style="margin-top: 0.8em;">access twins always in an <b>authorized</b> way</li> |
| <li class="fragment" style="margin-top: 0.8em;">provide APIs - <b>Device as a Service</b></li> |
| <li class="fragment" style="margin-top: 0.8em;"><b>normalize</b> device payloads</li> |
| </ul> |
| </section> |
| </section> |
| |
| <!-- Section: Ditto --> |
| <section style="clear: both;"> |
| <section id="ditto-1" style="clear: both;"> |
| <h2>Eclipse Ditto in context</h2> |
| <div style="text-align: left; float: left; width: 65%"> |
| <img src="../images/ditto-in-action-2020.png" style="width: 90%;padding-top:0.5em" alt="Ditto in action"/> |
| </div> |
| <div style="text-align: left; float: right; width: 35%"> |
| <p style="padding-top:3.5em">Ditto as <br/>Digital Twin<br/> "middleware"</p> |
| </div> |
| </section> |
| <section id="ditto-2" style="clear: both;"> |
| <h2>turn device data into APIs</h2> |
| <div style="text-align: left; float: left; width: 38%"> |
| <pre style="width: 100%; font-size: 0.45em;"><code class="hljs json">{ |
| "thingId": "io.foo:car1", |
| "policyId": "io.foo:car1", |
| "attributes": { |
| "manufacturer": "Foo corp", |
| "productionData": { |
| "serialNo": 4711 |
| } |
| }, |
| "features": { |
| "temperature": { |
| "properties": { |
| "value": 23.42 |
| } |
| } |
| } |
| }</code></pre> |
| <p style="text-align: center">JSON repr. of a Thing</p> |
| </div> |
| <div style="text-align: left; float: right; width: 60%" class="fragment"> |
| <pre style="width: 105%; font-size: 0.45em;"><code class="hljs">GET/PUT/DELETE /api/2/things/io.foo:car1 |
| /api/2/things/io.foo:car1/thingId |
| /api/2/things/io.foo:car1/policyId |
| /api/2/things/io.foo:car1/attributes |
| /api/2/things/io.foo:car1/attributes/manufacturer |
| /api/2/things/io.foo:car1/attributes/productionData |
| /api/2/things/io.foo:car1/attributes/productionData/serialNo |
| |
| |
| /api/2/things/io.foo:car1/features |
| /api/2/things/io.foo:car1/features/temperature |
| /api/2/things/io.foo:car1/features/temperature/properties |
| /api/2/things/io.foo:car1/features/temperature/properties/value |
| |
| |
| |
| |
| </code></pre> |
| <a href="https://www.eclipse.org/ditto/httpapi-concepts.html#endpoints" style="float: right; font-size: 0.7em">→ docs</a> |
| </div> |
| </section> |
| <section id="ditto-3" style="clear: both;"> |
| <h2>modeling thing capabilities</h2> |
| <div style="text-align: left; float: left; width: 70%"> |
| <ul> |
| <li style="margin-top: 0.8em; font-size: 0.8em">by default, thing attributes and feature properties are "schemaless"</li> |
| <li class="fragment" data-fragment-index="1" style="margin-top: 0.8em; font-size: 0.8em">a feature may be aware of several "definitions" linking to a model</li> |
| </ul> |
| </div> |
| <div style="text-align: left; float: right; width: 25%"> |
| <img src="../../images/pages/basic/ditto-thing-feature-definition-model.png" style="width: 110%" alt="Ditto thing feature definition model"> |
| <a href="https://www.eclipse.org/ditto/basic-feature.html#feature-definition" style="float: right; font-size: 0.7em">→ docs</a> |
| </div> |
| |
| <ul style="clear: both"> |
| <li class="fragment" data-fragment-index="2" style="margin-top: 0.8em; font-size: 0.8em">a thing may be aware of one "definition" listing which features/aspects it provides |
| </li> |
| </ul> |
| </section> |
| <section id="ditto-4" style="clear: both;"> |
| <h2>persistence of device state</h2> |
| <br/> |
| <div style="text-align: left; float: left; width: 48%"> |
| <ul> |
| <li>devices are not always connected to the net</li> |
| <li class="fragment" data-fragment-index="1" style="margin-top: 1em;">applications always need to be able to access their data</li> |
| <li class="fragment" data-fragment-index="2" style="margin-top: 1em;"><b>twin</b> vs. <b>live</b> access on API level</li> |
| </ul> |
| </div> |
| <div class="fragment" data-fragment-index="2" style="text-align: left; float: right; width: 50%"> |
| <img src="../../images/pages/protocol/ditto-twin-channel.png" style="width: 110%" alt="Ditto twin channel"> |
| <img src="../../images/pages/protocol/ditto-live-channel.png" style="width: 80%;padding-left: 1em" alt="Ditto live channel"> |
| </div> |
| </section> |
| <section id="ditto-5" style="clear: both"> |
| <h2>authorization</h2> |
| <br/> |
| <div style="text-align: left; float: left; width: 58%"> |
| <br/> |
| <ul> |
| <li>Ditto contains a built-in authorization mechanism (<b>Policies</b>)</li> |
| <li class="fragment" style="margin-top: 1em;">every API call is authorized</li> |
| </ul> |
| </div> |
| <a href="https://www.eclipse.org/ditto/basic-auth.html#authorization" style="float: right; font-size: 0.7em">→ docs</a> |
| </section> |
| <section id="ditto-6" style="clear: both;"> |
| <h2>search</h2> |
| <br/> |
| <div style="text-align: left; float: left; width: 40%"> |
| <img src="../images/meme-dino.jpg" style="width: 80%;" alt="Meme Dino" /> |
| <ul style="font-size: 0.7em"> |
| <li>you must not</li> |
| <li>Ditto has you covered</li> |
| </ul> |
| </div> |
| <div style="text-align: left; float: right; width: 60%" class="fragment" data-fragment-index="1"> |
| <pre style="width: 100%; font-size: 0.45em;"><code class="hljs javascript">GET /api/2/search/things |
| ?filter=like(attributes/manufacturer,"Foo*")</code></pre> |
| <pre style="width: 100%; font-size: 0.45em;" class="fragment" data-fragment-index="2"><code class="hljs javascript">GET /api/2/search/things |
| ?filter=and( |
| exists(attributes/manufacturer), |
| gt(features/temperature/properties/value,23.0) |
| ) |
| &namespaces=io.foo |
| &option=sort(-_modified,-attributes/manufacturer) |
| &fields=thingId,attributes/manufacturer,_modified</code></pre> |
| </div> |
| <div class="fragment" data-fragment-index="2"> |
| <ul style="font-size: 0.7em"> |
| <li>search for arbitrary data with RQL query</li> |
| <li>Ditto again ensures authorization</li> |
| <li>apply field projection over the results</li> |
| <li>don't worry about indexing</li> |
| </ul> |
| <a href="https://www.eclipse.org/ditto/basic-search.html" style="float: right; font-size: 0.7em">→ docs</a> |
| </div> |
| </section> |
| <section id="ditto-7" style="clear: both;"> |
| <h2>get notified about changes</h2> |
| <br/> |
| <ul> |
| <li>notification via various channels: WebSocket, SSE, MQTT (3.1.1 | 5), AMQP (0.9.1 | 1.0), Apache Kafka, HTTP hook</li> |
| <li class="fragment" style="margin-top: 1em;">server side filtering via RQL (same as in search)</li> |
| </ul> |
| <div class="fragment"> |
| <a href="https://www.eclipse.org/ditto/basic-changenotifications.html" style="float: right; font-size: 0.7em">→ docs</a> |
| </div> |
| </section> |
| </section> |
| |
| <!-- Section: Ditto + WoT --> |
| <section style="clear: both;"> |
| <section id="ditto-wot" class="new-chapter" data-background="../bg-images/background-cloud-small.jpg" |
| data-state="chapter-background"> |
| <!-- background source: http://wallpapercave.com/wp/WkziiJQ.jpg --> |
| <h1>Eclipse Ditto +</h1> |
| <img src="../images/wot.png" alt="W3C Web of Things logo" style="width: 40%"/> |
| </section> |
| <section id="ditto-wot-1" style="clear: both;"> |
| <h2>could benefit from each other</h2> |
| <br/> |
| <ul> |
| <li>Eclipse Ditto bringing scalable "cloud-ready" digital twin framework to the table</li> |
| <li class="fragment" data-fragment-index="1" style="margin-top: 0.5em;">Ditto currently lacks modeling things</li> |
| <li class="fragment" data-fragment-index="2" style="margin-top: 0.5em;">WoT "Thing Models" could be a good fit for feature "definitions"</li> |
| <li class="fragment" data-fragment-index="3" style="margin-top: 0.5em;">later: WoT TD facade in Ditto?</li> |
| </ul> |
| </section> |
| </section> |
| |
| <!-- Section: Wrap up --> |
| <section style="clear: both;"> |
| <section id="wrap-up" style="clear: both;"> |
| <h1>Wrap up</h1> |
| <br/> |
| <ul> |
| <li>Digital Twins as pattern for simplifying IoT solution development</li> |
| <li style="margin-top: 1em;">Mission: provide Device-as-a-Service</li> |
| <li style="margin-top: 1em;">Eclipse Ditto as OpenSource framework for Digital Twins</li> |
| </ul> |
| </section> |
| </section> |
| |
| <!-- Section: Questions and Answers --> |
| <section style="clear: both;"> |
| <section id="q-a" class="new-chapter" data-background="../bg-images/background-conclusion-small.jpg" |
| data-state="chapter-background"> |
| <br/> |
| <p>Links:</p> |
| <ul> |
| <li><a target="_blank" href="https://eclipse.org/ditto">Ditto website and documentation</a></li> |
| <li><a target="_blank" href="https://github.org/eclipse/ditto">GitHub</a> - please give us a star ;)</li> |
| <li><a target="_blank" href="https://gitter.im/eclipse/ditto">Chatroom to ask more questions</a></li> |
| <li><a target="_blank" href="https://developer.bosch-iot-suite.com/service/things/">Commercial offering incl. free plan</a></li> |
| </ul> |
| </section> |
| </section> |
| </div> |
| |
| </div> |
| |
| <div class="footer"> |
| Copyright ©2021 |
| <a href="https://www.bosch.io" target="_blank">Bosch.IO GmbH</a> All rights reserved. | |
| <a href="https://www.eclipse.org/ditto/intro-overview.html" target="_blank">Documentation</a> | |
| <a href="https://github.com/eclipse/ditto" target="_blank">GitHub</a> | |
| <a href="https://ditto.eclipseprojects.io" target="_blank">Sandbox</a> |
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