jeena/home-assistant.github.io
1
0
Fork 0
Code Issues Pull requests Projects Packages Wiki Activity Actions
home-assistant.github.io/docs/configuration/events/index.html
Travis CI 7181f5594a Site updated at 2017-04-04 11:37:06 UTC
2017-04-04 11:37:06 +00:00

453 lines
22 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>Events - Home Assistant</title>
<meta name="author" content="Home Assistant">
<meta name="description" content="Describes all there is to know about events in Home Assistant.">
<meta name="viewport" content="width=device-width">
<link rel="canonical" href="https://home-assistant.io/docs/configuration/events/">
<meta property="fb:app_id" content="338291289691179">
<meta property="og:title" content="Events">
<meta property="og:site_name" content="Home Assistant">
<meta property="og:url" content="https://home-assistant.io/docs/configuration/events/">
<meta property="og:type" content="article">
<meta property="og:description" content="Describes all there is to know about events in Home Assistant.">
<meta property="og:image" content="https://home-assistant.io/images/default-social.png">
<meta name="twitter:card" content="summary_large_image">
<meta name="twitter:site" content="@home_assistant">
<meta name="twitter:title" content="Events">
<meta name="twitter:description" content="Describes all there is to know about events in Home Assistant.">
<meta name="twitter:image" content="https://home-assistant.io/images/default-social.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='/demo/favicon-192x192.png'>
<span>Home Assistant</span>
</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></li>
<li><a href="/components/">Components</a></li>
<li><a href="/docs/">Docs</a></li>
<li><a href="/cookbook/">Examples</a></li>
<li><a href="/developers/">Developers</a></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">
<div class='edit-github'><a href='https://github.com/home-assistant/home-assistant.github.io/tree/current/source/_docs/configuration/events.markdown'>Edit this page on GitHub</a></div>
<header>
<h1 class="title indent">
Events
</h1>
</header>
<hr class="divider">
<p>The core of Home Assistant is the event bus. The event bus allows any component to fire or listen for events. It is the core of everything. For example, any state change will be announced on the event bus as a <code class="highlighter-rouge">state_changed</code> event containing the previous and the new state of an entity.</p>
<p>Home Assistant contains a few built-in events that are used to coordinate between various components.</p>
<h3><a class="title-link" name="event-homeassistant_start" href="#event-homeassistant_start"></a> Event <code class="highlighter-rouge">homeassistant_start</code></h3>
<p>Event <code class="highlighter-rouge">homeassistant_start</code> is fired when all components from the configuration have been intitialized. This is the event that will start the timer firing off <code class="highlighter-rouge">time_changed</code> events.</p>
<h3><a class="title-link" name="event-homeassistant_stop" href="#event-homeassistant_stop"></a> Event <code class="highlighter-rouge">homeassistant_stop</code></h3>
<p>Event <code class="highlighter-rouge">homeassistant_stop</code> is fired when Home Assistant is shutting down. It should be used to close any open connection or release any resources.</p>
<h3><a class="title-link" name="event-state_changed" href="#event-state_changed"></a> Event <code class="highlighter-rouge">state_changed</code></h3>
<p>Event <code class="highlighter-rouge">state_changed</code> is fired when a state changes. Both <code class="highlighter-rouge">old_state</code> and <code class="highlighter-rouge">new_state</code> are state objects. <a href="/topics/state_object/">Documentation about state objects.</a></p>
<table>
<thead>
<tr>
<th>Field</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code class="highlighter-rouge">entity_id</code></td>
<td>Entity ID of the changed entity. Example: <code class="highlighter-rouge">light.kitchen</code></td>
</tr>
<tr>
<td><code class="highlighter-rouge">old_state</code></td>
<td>The previous state of the entity before it changed. This field is ommitted if the entity is new.</td>
</tr>
<tr>
<td><code class="highlighter-rouge">new_state</code></td>
<td>The new state of the entity. This field is ommitted if the entity is removed from the state machine.</td>
</tr>
</tbody>
</table>
<h3><a class="title-link" name="event-time_changed" href="#event-time_changed"></a> Event <code class="highlighter-rouge">time_changed</code></h3>
<p>Event <code class="highlighter-rouge">time_changed</code> is fired every second by the timer and contains the current time.</p>
<table>
<thead>
<tr>
<th>Field</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code class="highlighter-rouge">now</code></td>
<td>A <a href="https://docs.python.org/3.4/library/datetime.html#datetime.datetime">datetime object</a> containing the current time in UTC.</td>
</tr>
</tbody>
</table>
<h3><a class="title-link" name="event-service_registered" href="#event-service_registered"></a> Event <code class="highlighter-rouge">service_registered</code></h3>
<p>Event <code class="highlighter-rouge">service_registered</code> is fired when a new service has been registered within Home Assistant.</p>
<table>
<thead>
<tr>
<th>Field</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code class="highlighter-rouge">domain</code></td>
<td>Domain of the service. Example: <code class="highlighter-rouge">light</code>.</td>
</tr>
<tr>
<td><code class="highlighter-rouge">service</code></td>
<td>The service to call. Example: <code class="highlighter-rouge">turn_on</code></td>
</tr>
</tbody>
</table>
<h3><a class="title-link" name="event-call_service" href="#event-call_service"></a> Event <code class="highlighter-rouge">call_service</code></h3>
<p>Event <code class="highlighter-rouge">call_service</code> is fired to call a service.</p>
<table>
<thead>
<tr>
<th>Field</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code class="highlighter-rouge">domain</code></td>
<td>Domain of the service. Example: <code class="highlighter-rouge">light</code>.</td>
</tr>
<tr>
<td><code class="highlighter-rouge">service</code></td>
<td>The service to call. Example: <code class="highlighter-rouge">turn_on</code></td>
</tr>
<tr>
<td><code class="highlighter-rouge">service_data</code></td>
<td>Dictionary with the service call parameters. Example: <code class="highlighter-rouge"><span class="p">{</span><span class="w"> </span><span class="err">'brightness':</span><span class="w"> </span><span class="err">120</span><span class="w"> </span><span class="p">}</span></code>.</td>
</tr>
<tr>
<td><code class="highlighter-rouge">service_call_id</code></td>
<td>String with a unique call id. Example: <code class="highlighter-rouge">23123-4</code>.</td>
</tr>
</tbody>
</table>
<h3><a class="title-link" name="event-service_executed" href="#event-service_executed"></a> Event <code class="highlighter-rouge">service_executed</code></h3>
<p>Event <code class="highlighter-rouge">service_executed</code> is fired by the service handler to indicate the service is done.</p>
<table>
<thead>
<tr>
<th>Field</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code class="highlighter-rouge">service_call_id</code></td>
<td>String with the unique call id of the service call that was executed. Example: <code class="highlighter-rouge">23123-4</code>.</td>
</tr>
</tbody>
</table>
<h3><a class="title-link" name="event-platform_discovered" href="#event-platform_discovered"></a> Event <code class="highlighter-rouge">platform_discovered</code></h3>
<p>Event <code class="highlighter-rouge">platform_discovered</code> is fired when a new platform has been discovered by the discovery component.</p>
<table>
<thead>
<tr>
<th>Field</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code class="highlighter-rouge">service</code></td>
<td>The service that is discovered. Example: <code class="highlighter-rouge">zwave</code>.</td>
</tr>
<tr>
<td><code class="highlighter-rouge">discovered</code></td>
<td>Information that is discovered. Can be a dict, tuple etc. Example: <code class="highlighter-rouge">(192.168.1.10, 8889)</code>.</td>
</tr>
</tbody>
</table>
<h3><a class="title-link" name="event-component_loaded" href="#event-component_loaded"></a> Event <code class="highlighter-rouge">component_loaded</code></h3>
<p>Event <code class="highlighter-rouge">component_loaded</code> is fired when a new component has been loaded and initialized.</p>
<table>
<thead>
<tr>
<th>Field</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code class="highlighter-rouge">component</code></td>
<td>Domain of the component that has just been initialized. Example: <code class="highlighter-rouge">light</code>.</td>
</tr>
</tbody>
</table>
</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='section'>
<h1 class="title delta">Topics</h1>
<ul class='divided sidebar-menu'>
<li>
<a href='/docs/installation/'>Installation </a>
<ul>
<li><a href='/docs/installation/virtualenv/'>Python Virtual Env </a></li>
<li><a href='/docs/installation/raspberry-pi-all-in-one/'>Raspberry Pi All-in-One </a></li>
<li><a href='/docs/installation/updating/'>Updating </a></li>
<li><a href='/docs/installation/troubleshooting/'>Troubleshooting </a></li>
</ul>
</li>
<li>
<a href='/docs/hassbian/'>Hassbian </a>
<ul>
<li><a href='/docs/hassbian/installation/'>Installation </a></li>
<li><a href='/docs/hassbian/customization/'>Customization </a></li>
<li><a href='/docs/hassbian/common-tasks/'>Common tasks </a></li>
<li><a href='/docs/hassbian/integrations/'>Integrations </a></li>
<li><a href='/docs/hassbian/upgrading/'>Upgrading </a></li>
</ul>
</li>
<li>
<a href='/docs/configuration/'>Configuration </a>
<ul>
<li><a href='/docs/configuration/yaml/'>YAML </a></li>
<li><a href='/docs/configuration/basic/'>Basic information </a></li>
<li><a href='/docs/configuration/devices/'>Setting up devices </a></li>
<li><a href='/docs/configuration/customizing-devices/'>Customizing devices and services </a></li>
<li><a href='/docs/configuration/troubleshooting/'>Troubleshooting </a></li>
<li><a href='/docs/configuration/securing/'>Security Check Points </a></li>
</ul>
</li>
<li>
Advanced Configuration
<ul>
<li><a href='/docs/configuration/remote/'>Remote access </a></li>
<li><a href='/docs/configuration/packages/'>Packages </a></li>
<li><a href='/docs/configuration/splitting_configuration/'>Splitting up the configuration </a></li>
<li><a href='/docs/configuration/secrets/'>Storing Secrets </a></li>
<li><a href='/docs/configuration/templating/'>Templating </a></li>
<li><a href='/docs/configuration/group_visibility/'>Group Visibility </a></li>
<li><a class='active' href='/docs/configuration/events/'>Events </a></li>
<li><a href='/docs/configuration/state_object/'>State Objects </a></li>
<li><a href='/docs/configuration/platform_options/'>Entity component platform options </a></li>
</ul>
</li>
<li>
<a href='/docs/automation/'>Automation </a>
<ul>
<li><a href='/docs/automation/examples/'>Examples </a></li>
<li><a href='/docs/automation/trigger/'>Triggers </a></li>
<li><a href='/docs/automation/condition/'>Conditions </a></li>
<li><a href='/docs/automation/action/'>Actions </a></li>
<li><a href='/docs/automation/templating/'>Templates </a></li>
</ul>
</li>
<li>
<a href='/docs/frontend/'>Frontend </a>
<ul>
<li><a href='/docs/frontend/mobile/'>Android/iOS Homescreen </a></li>
<li><a href='/docs/frontend/webserver/'>Web server fingerprint </a></li>
<li><a href='/docs/frontend/browsers/'>Browser Compatibility List </a></li>
</ul>
</li>
<li>
<a href='/docs/backend/'>Backend </a>
<ul>
<li><a href='/docs/backend/database/'>Database </a></li>
<li><a href='/docs/backend/updater/'>Updater </a></li>
<li><a href='/developers/api/'>API </a></li>
</ul>
</li>
<li>
<a href='/docs/scripts/'>Scripts </a>
<ul>
<li><a href='/docs/scripts/service-calls/'>Service Calls </a></li>
<li><a href='/docs/scripts/conditions/'>Conditions </a></li>
</ul>
</li>
<li>
<a href='/docs/tools/'>Tools and Helpers </a>
<ul>
<li><a href='/docs/tools/dev-tools/'>Developer Tools </a></li>
<li><a href='/docs/tools/hass/'>hass </a></li>
<li><a href='/docs/tools/scripts/'>Scripts </a></li>
</ul>
</li>
<li>
<a href='/docs/z-wave/'>Z-Wave </a>
<ul>
<li><a href='/docs/z-wave/controllers/'>Controllers </a></li>
<li><a href='/docs/z-wave/settings/'>Modifying Settings </a></li>
<li><a href='/docs/z-wave/device-specific/'>Device Specific </a></li>
</ul>
</li>
<li>
<a href='/docs/mqtt/'>MQTT </a>
<ul>
<li><a href='/docs/mqtt/broker/'>Broker </a></li>
<li><a href='/docs/mqtt/certificate/'>Certificate </a></li>
<li><a href='/docs/mqtt/discovery/'>Discovery </a></li>
<li><a href='/docs/mqtt/service/'>Publish service </a></li>
<li><a href='/docs/mqtt/birth_will/'>Birth and last will messages </a></li>
<li><a href='/docs/mqtt/testing/'>Testing your setup </a></li>
<li><a href='/docs/mqtt/logging/'>Logging </a></li>
<li><a href='/docs/mqtt/processing_json/'>Processing JSON </a></li>
</ul>
</li>
<li>
<a href='/docs/ecosystem/'>Ecosystem </a>
<ul>
<li>
<a href='/docs/autostart/'>Autostart </a>
<ul>
<li><a href='/docs/autostart/systemd/'>systemd (Linux) </a></li>
<li><a href='/docs/autostart/upstart/'>Upstart (Linux) </a></li>
<li><a href='/docs/autostart/init.d/'>init.d (Linux) </a></li>
<li><a href='/docs/autostart/macos/'>macOS </a></li>
<li><a href='/docs/autostart/synology/'>Synology NAS </a></li>
</ul>
</li>
<li>
<a href='/docs/ecosystem/appdaemon/'>AppDaemon </a>
<ul>
<li><a href='/docs/ecosystem/appdaemon/installation/'>Installation </a></li>
<li><a href='/docs/ecosystem/appdaemon/configuration/'>Configuration </a></li>
<li><a href='/docs/ecosystem/appdaemon/example_apps/'>Example Apps </a></li>
<li><a href='/docs/ecosystem/appdaemon/running/'>Running AppDaemon </a></li>
<li><a href='/docs/ecosystem/appdaemon/reboot/'>Starting AppDaemon at Reboot </a></li>
<li><a href='/docs/ecosystem/appdaemon/operation/'>Operation </a></li>
<li><a href='/docs/ecosystem/appdaemon/windows/'>AppDaemon on Windows </a></li>
<li><a href='/docs/ecosystem/appdaemon/updating/'>Updating AppDaemon </a></li>
<li><a href='/docs/ecosystem/appdaemon/tutorial/'>AppDaemon Tutorial </a></li>
<li><a href='/docs/ecosystem/appdaemon/api/'>AppDaemon API Reference </a></li>
</ul>
</li>
<li>
<a href='/docs/ecosystem/hadashboard/'>HADashboard </a>
<ul>
<li><a href='/docs/ecosystem/hadashboard/installation/'>Installation </a></li>
<li><a href='/docs/ecosystem/hadashboard/dash_config/'>Dashboard Configuration </a></li>
<li><a href='/docs/ecosystem/hadashboard/hapush/'>HAPush </a></li>
<li><a href='/docs/ecosystem/hadashboard/reboot/'>Reboot </a></li>
<li><a href='/docs/ecosystem/hadashboard/updating/'>Updating HADashboard </a></li>
</ul>
</li>
<li>
<a href='/docs/ecosystem/notebooks/'>Notebooks </a>
<ul>
<li><a href='/docs/ecosystem/notebooks/'>Introduction </a></li>
<li><a href='/docs/ecosystem/notebooks/installation/'>Installation </a></li>
<li><a href='/docs/ecosystem/notebooks/graph/'>Graph </a></li>
<li><a href='/docs/ecosystem/notebooks/api/'>Home Assistant API </a></li>
<li><a href='/docs/ecosystem/notebooks/database/'>Databsase </a></li>
<li><a href='/docs/ecosystem/notebooks/stats/'>Statistics </a></li>
</ul>
</li>
<li>
<a href='/docs/ecosystem/ios/notifications/'>iOS </a>
<ul>
<li><a href='/docs/ecosystem/ios/notifications/basic/'>Basic notifications </a></li>
<ul>
<li><a href='/docs/ecosystem/ios/notifications/sounds/'>Sounds </a></li>
<li><a href='/docs/ecosystem/ios/notifications/architecture/'>Architecture </a></li>
<li><a href='/docs/ecosystem/ios/notifications/privacy_security_rate_limits/'>Privacy, rate limiting and security </a></li>
</ul>
<li>Advanced notifications</li>
<ul>
<li><a href='/docs/ecosystem/ios/notifications/attachments/'>Attachments </a></li>
<li><a href='/docs/ecosystem/ios/notifications/content_extensions/'>Dynamic content </a></li>
<li><a href='/docs/ecosystem/ios/notifications/actions/'>Actionable notifications </a></li>
<li><a href='/docs/ecosystem/ios/notifications/requesting_location_updates/'>Requesting location updates </a></li>
</ul>
<li><a href='/docs/ecosystem/ios/location/'>Location Tracking </a></li>
<li><a href='/docs/ecosystem/ios/integration/'>Integration with other apps </a></li>
</ul>
</li>
<li>
Remote access
<ul>
<li><a href='/docs/ecosystem/apache/'>Apache </a></li>
<li><a href='/docs/ecosystem/nginx/'>NGINX </a></li>
<li><a href='/docs/ecosystem/tor/'>Tor Onion Service </a></li>
</ul>
</li>
<li>
Certificates
<ul>
<li><a href='/docs/ecosystem/certificates/tls_self_signed_certificate/'>Self-signed certificate </a></li>
<li><a href='/docs/ecosystem/certificates/tls_domain_certificate/'>Certificate domain owners </a></li>
</ul>
</li>
<li><a href='/docs/ecosystem/scenegen/'>scenegen </a></li>
<li><a href='/docs/ecosystem/synology/'>Synology </a></li>
<li><a href='/docs/ecosystem/backup/backup_github/'>Backup to GitHub </a></li>
<li><a href='/docs/ecosystem/hass-configurator/'>HASS Configurator </a></li>
</ul>
</ul>
</div>
</section>
</div>
</aside>
</div>
</div>
<footer>
<div class="grid-wrapper">
<div class="grid">
<div class="grid__item">
<div class="copyright">
<a rel="me" href='https://twitter.com/home_assistant'><i class="icon-twitter"></i></a>
<a rel="me" href='https://facebook.com/homeassistantio'><i class="icon-facebook"></i></a>
<a rel="me" href='https://plus.google.com/110560654828510104551'><i class="icon-google-plus"></i></a>
<a rel="me" href='https://github.com/home-assistant/home-assistant'><i class="icon-github"></i></a>
<div class="credit">
Contact us at <a href='mailto:hello@home-assistant.io'>hello@home-assistant.io</a>.<br>
Website powered by <a href='http://jekyllrb.com/'>Jekyll</a> and the <a href='https://github.com/coogie/oscailte'>Oscalite theme</a>.<br />
Hosted by <a href='https://pages.github.com/'>GitHub</a> and served by <a href='https://cloudflare.com'>CloudFlare</a>.
</div>
<a rel="license" href="http://creativecommons.org/licenses/by-nc-sa/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-nc-sa/4.0/88x31.png" /></a><br /><span xmlns:dct="http://purl.org/dc/terms/" property="dct:title">home-assistant.io</span> is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-nc-sa/4.0/">Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License</a>.
</div>
</div>
</div>
</div>
</footer>
<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