jeena/home-assistant.github.io
1
0
Fork 0
Code Issues Pull requests Projects Packages Wiki Activity Actions
home-assistant.github.io/components/history.html
Paulus Schoutsen adcde053bb Site updated at 2015-10-27 04:59:24 UTC
2015-10-26 21:59:24 -07:00

2305 lines
No EOL
20 KiB
HTML
Raw Blame History

<!doctype html>
<!--[if lt IE 7]> <html class="no-js lt-ie9 lt-ie8 lt-ie7"> <![endif]-->
<!--[if IE 7]> <html class="no-js lt-ie9 lt-ie8"> <![endif]-->
<!--[if IE 8]> <html class="no-js lt-ie9"> <![endif]-->
<!--[if gt IE 8]><!--> <html> <!--<![endif]-->
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>History - Home Assistant</title>
<meta name="author" content="Paulus Schoutsen">
<meta name="description" content="Instructions how to enable history support for Home Assistant.">
<meta name="viewport" content="width=device-width">
<link rel="canonical" href="https://home-assistant.io/components/history.html">
<meta property="fb:app_id" content="338291289691179">
<meta property="og:title" content="History">
<meta property="og:site_name" content="Home Assistant">
<meta property="og:url" content="https://home-assistant.io/components/history.html/">
<meta property="og:type" content="website">
<meta property="og:description" content="Instructions how to enable history support for Home Assistant.">
<meta property="og:image" content="https://home-assistant.io/images/home-assistant-logo-2164x2164.png">
<link href="/stylesheets/screen.css" media="screen, projection" rel="stylesheet">
<link href="/atom.xml" rel="alternate" title="Home Assistant" type="application/atom+xml">
<link rel='shortcut icon' href='/images/favicon.ico' />
<link rel='icon' type='image/png' href='/images/favicon-192x192.png' sizes='192x192' />
</head>
<body >
<header>
<div class="grid-wrapper">
<div class="grid">
<div class="grid__item three-tenths lap-two-sixths palm-one-whole ha-title">
<a href="/" class="site-title">
<img width='40' src='/images/favicon-192x192.png'> Home Assistant
</a>
</div>
<div class="grid__item seven-tenths lap-four-sixths palm-one-whole">
<nav>
<input type="checkbox" id="toggle">
<label for="toggle" class="toggle" data-open="Main Menu" data-close="Close Menu"></label>
<ul class="menu pull-right">
<li>
<a href="/getting-started/">Getting started</a>
<ul>
<li><a href='/getting-started/'>Installing Home Assistant</a></li>
<li><a href='/getting-started/configuration.html'>Configuration basics</a></li>
<li><a href='/getting-started/devices.html'>Adding devices</a></li>
<li><a href='/getting-started/presence-detection.html'>Presence detection</a></li>
<li><a href='/getting-started/automation.html'>Automation</a></li>
<li><a href='/cookbook'>Configuration cookbook</a></li>
</ul>
</li>
<li><a href='/components/'>Components</a></li>
<li>
<a href="/developers/">Developers</a>
<ul>
<li><a href="/developers/architecture.html">Architecture</a></li>
<li><a href="/developers/frontend.html">Frontend development</a></li>
<li><a href="/developers/creating_components.html">
Creating components
</a></li>
<li><a href="/developers/add_new_platform.html">
Adding platform support
</a></li>
<li><a href="/developers/api.html">API</a></li>
<li><a href="/developers/credits.html">Credits</a></li>
</ul>
</li>
<li><a href="/blog/">Blog</a></li>
<li><a href="/help/">Need help?</a></li>
</ul>
</nav>
</div>
</div>
</div>
</header>
<div class="grid-wrapper">
<div class="grid grid-center">
<div class="grid__item two-thirds lap-one-whole palm-one-whole">
<article class="page">
<header>
<h1 class="title indent">
History
</h1>
</header>
<hr class="divider">
<p>This component will track everything that is going on within Home Assistant and allows the user to browse through it.</p>
<p>To enable the history option in your installation, add the following to your <code>configuration.yaml</code> file:</p>
<pre><code class="yaml"># Example configuration.yaml entry
history:
</code></pre>
<p class='img'>
<a href='/images/screenshots/component_history_24h.png'>
<img src='/images/screenshots/component_history_24h.png' />
</a>
</p>
<p class='note'>
Events are saved in a local database. Google Graphs is used to draw the graph. Drawing is happening 100% in your browser - no data is transferred to anyone at any time.
</p>
<h4><a class='title-link' name='implementation-details' href='#implementation-details'></a> Implementation details</h4>
<p>The history is stored in a SQLite databse <code>home-assistant.db</code> within your config directory.</p>
<ul>
<li>events table is all events except time_changed that happened while recorder component was running.</li>
<li>states table contains all the new_state values of state_changed events.</li>
<li>Inside the states table you have:
<ul>
<li>entity_id: the entity_id of the entity</li>
<li>state: the state of the entity</li>
<li>attributes: JSON of the state attributes</li>
<li>last_changed: timestamp last time the state has changed. A state_changed event can happen when just attributes change.</li>
<li>last_updated: timestamp anything has changed (state, attributes)</li>
<li>created: timestamp this entry was inserted into the database</li>
</ul>
</li>
</ul>
<p>When the history component queries the states table it only selects states where the state has changed: <code>WHERE last_changed=last_updated</code></p>
<h4><a class='title-link' name='on-dates' href='#on-dates'></a> On dates</h4>
<p>SQLite databases do not support native dates. That&rsquo;s why all the dates are saved in seconds since the UNIX epoch. Convert them manually using this site or in Python:</p>
<pre><code class="python">from datetime import datetime
datetime.fromtimestamp(1422830502)
</code></pre>
</article>
</div>
<aside id="sidebar" class="grid__item one-third lap-one-whole palm-one-whole">
<div class="grid">
<section class="aside-module grid__item one-whole lap-one-half">
<div class='brand-logo-container section'>
</div>
<div class='section'>
<h1 class="title delta">Category History</h1>
<ul class='divided'>
<li>
History
</li>
<li>
<a href='/components/logbook.html'>Logbook</a>
</li>
</ul>
</div>
</section>
</div>
</aside>
</div>
</div>
<footer>
<div class="grid-wrapper">
<div class="grid">
<div class="grid__item">
<p class="copyright">
<span class="credit">Powered by <a href="http://octopress.org">Octopress</a>, <a href='http://jekyllrb.com/'>Jekyll</a> and the <a href='https://github.com/coogie/oscailte'>Oscalite theme</a>. Hosted by <a href='https://pages.github.com/'>GitHub</a> and served by <a href='https://cloudflare.com'>CloudFlare</a>.</span>
</p>
</div>
</div>
</div>
</footer>
<!--[if lt IE 7]>
<p class="chromeframe">You are using an <strong>outdated</strong> browser. Please <a href="http://browsehappy.com/">upgrade your browser</a> or <a href="http://www.google.com/chromeframe/?redirect=true">activate Google Chrome Frame</a> to improve your experience.</p>
<![endif]-->
<script>
var _gaq=[['_setAccount','UA-57927901-1'],['_trackPageview']];
(function(d,t){var g=d.createElement(t),s=d.getElementsByTagName(t)[0];
g.src=('https:'==location.protocol?'//ssl':'//www')+'.google-analytics.com/ga.js';
s.parentNode.insertBefore(g,s)}(document,'script'));
</script>
</body>
</html>
Reference in a new issue View git blame Copy permalink