signalk-server
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An implementation of a [Signal K](http://signalk.org) server for boats.
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class="tsd-widget menu" id="tsd-toolbar-menu-trigger" data-toggle="menu" aria-label="Menu"><svg width="16" height="16" viewBox="0 0 16 16" fill="none" aria-hidden="true"><use href="../../assets/icons.svg#icon-menu"></use></svg></a></div></div></header><div class="container container-main"><div class="col-content"><div class="tsd-page-title"><ul class="tsd-breadcrumb" aria-label="Breadcrumb"><li><a href="../../Developing.html">Developing</a></li><li><a href="../REST_APIs.html">REST APIs</a></li><li><a href="" aria-current="page">Weather API</a></li></ul></div><div class="tsd-panel tsd-typography"><h1 id="weather-api" class="tsd-anchor-link">Weather API<a href="#weather-api" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../../assets/icons.svg#icon-anchor"></use></svg></a></h1><p>The Signal K server Weather API provides a common set of operations for viewing information from weather data sources via a "provider plugin". The provider plugin facilitates the interaction with the weather service and transforms the data into the Signal K data schema.</p>
<p>Requests to the Weather API are made to HTTP REST endpoints rooted at <code>/signalk/v2/api/weather</code>.</p>
<p>Weather API requests require that a postion be supplied which determines the location from which the weather data is sourced.</p>
<p>The following weather data sets are supported:</p>
<ul>
<li>Observations</li>
<li>Forecasts</li>
<li>Warnings</li>
</ul>
<p>Following are examples of the types of requests that can be made.</p>
<div class="tsd-alert tsd-alert-note"><div class="tsd-alert-title"><svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16" aria-hidden="true"><use href="../../assets/icons.svg#icon-alertNote"></use></svg><span>Note</span></div><p>
The data available is dependent on the weather service API and provider-plugin.</p>
</div>
<p><em>Example 1: Return the latest observation data for the provided location</em></p>
<pre><code class="javascript"><span class="hl-2">GET</span><span class="hl-0"> </span><span class="hl-4">"/signalk/v2/api/weather/observations?lat=5.432&lon=7.334"</span>
</code><button type="button">Copy</button></pre>
<p><em>Example 2: Return the last 5 observations for the provided location</em></p>
<pre><code class="javascript"><span class="hl-2">GET</span><span class="hl-0"> </span><span class="hl-4">"/signalk/v2/api/weather/observations?lat=5.432&lon=7.334&count=5"</span>
</code><button type="button">Copy</button></pre>
<p><em>Example 3: Return the daily forecast for the next seven days for the provided location</em></p>
<pre><code class="javascript"><span class="hl-2">GET</span><span class="hl-0"> </span><span class="hl-4">"/signalk/v2/api/weather/forecasts/daily?lat=5.432&lon=7.334&count=7"</span>
</code><button type="button">Copy</button></pre>
<p><em>Example 4: Return point forecasts for the next 12 periods (service provider dependant) for the provided location</em></p>
<pre><code class="javascript"><span class="hl-2">GET</span><span class="hl-0"> </span><span class="hl-4">"/signalk/v2/api/weather/forecasts/point?lat=5.432&lon=7.334&count=12"</span>
</code><button type="button">Copy</button></pre>
<p><em>Example 5: Return current warnings for the provided location</em></p>
<pre><code class="javascript"><span class="hl-2">GET</span><span class="hl-0"> </span><span class="hl-4">"/signalk/v2/api/weather/warnings?lat=5.432&lon=7.334"</span>
</code><button type="button">Copy</button></pre>
<h2 id="providers" class="tsd-anchor-link">Providers<a href="#providers" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../../assets/icons.svg#icon-anchor"></use></svg></a></h2><p>The Weather API supports the registration of multiple weather provider plugins.</p>
<p>The first plugin registered is set as the <em>default</em> provider and all requests will be directed to it.</p>
<p>Requests can be directed to a specific provider by using the <code>provider</code> parameter in the request with the <em>id</em> of the provider plugin.</p>
<p><em>Example:</em></p>
<pre><code class="javascript"><span class="hl-2">GET</span><span class="hl-0"> </span><span class="hl-4">"/signalk/v2/api/weather/warnings?lat=5.432&lon=7.334?provider=my-weather-plugin"</span>
</code><button type="button">Copy</button></pre>
<div class="tsd-alert tsd-alert-note"><div class="tsd-alert-title"><svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16" aria-hidden="true"><use href="../../assets/icons.svg#icon-alertNote"></use></svg><span>Note</span></div><p> Any installed weather provider can be set as the default. <em>See <a href="#setting-a-provider-as-the-default">Setting the Default provider</a></em></p>
</div>
<h3 id="listing-the-available-weather-providers" class="tsd-anchor-link">Listing the available Weather Providers<a href="#listing-the-available-weather-providers" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../../assets/icons.svg#icon-anchor"></use></svg></a></h3><p>To retrieve a list of installed weather provider plugins, submit an HTTP <code>GET</code> request to <code>/signalk/v2/api/weather/_providers</code>.</p>
<p>The response will be an object containing all the registered weather providers, keyed by their identifier, detailing the service <code>name</code> and whether it is assigned as the <em>default</em>.</p>
<pre><code class="typescript"><span class="hl-2">HTTP</span><span class="hl-0"> </span><span class="hl-2">GET</span><span class="hl-0"> </span><span class="hl-4">"/signalk/v2/api/weather/_providers"</span>
</code><button type="button">Copy</button></pre>
<p><em>Example: List of registered weather providers showing that <code>open-meteo</code> is assigned as the default.</em></p>
<pre><code class="JSON"><span class="hl-0">{</span><br/><span class="hl-0"> </span><span class="hl-3">"open-meteo"</span><span class="hl-0">: {</span><br/><span class="hl-0"> </span><span class="hl-3">"provider"</span><span class="hl-0">:</span><span class="hl-4">"OpenMeteo"</span><span class="hl-0">,</span><br/><span class="hl-0"> </span><span class="hl-3">"isDefault"</span><span class="hl-0">: </span><span class="hl-2">true</span><br/><span class="hl-0"> },</span><br/><span class="hl-0"> </span><span class="hl-3">"openweather"</span><span class="hl-0">: {</span><br/><span class="hl-0"> </span><span class="hl-3">"provider"</span><span class="hl-0">:</span><span class="hl-4">"OpenWeather"</span><span class="hl-0">,</span><br/><span class="hl-0"> </span><span class="hl-3">"isDefault"</span><span class="hl-0">: </span><span class="hl-2">false</span><br/><span class="hl-0"> }</span><br/><span class="hl-0">}</span>
</code><button type="button">Copy</button></pre>
<h3 id="getting-the-default-provider-identifier" class="tsd-anchor-link">Getting the Default Provider identifier<a href="#getting-the-default-provider-identifier" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../../assets/icons.svg#icon-anchor"></use></svg></a></h3><p>To get the id of the <em>default</em> provider, submit an HTTP <code>GET</code> request to <code>/signalk/v2/api/weather/_providers/_default</code>.</p>
<p><em>Example:</em></p>
<pre><code class="typescript"><span class="hl-2">HTTP</span><span class="hl-0"> </span><span class="hl-2">GET</span><span class="hl-0"> </span><span class="hl-4">"//signalk/v2/api/weather/_providers"</span>
</code><button type="button">Copy</button></pre>
<p><em>Response:</em></p>
<pre><code class="JSON"><span class="hl-0">{</span><br/><span class="hl-0"> </span><span class="hl-3">"id"</span><span class="hl-0">:</span><span class="hl-4">"open-meteo"</span><br/><span class="hl-0">}</span>
</code><button type="button">Copy</button></pre>
<h3 id="setting-a-provider-as-the-default" class="tsd-anchor-link">Setting a Provider as the Default<a href="#setting-a-provider-as-the-default" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../../assets/icons.svg#icon-anchor"></use></svg></a></h3><p>To set / change the weather provider that requests will be directed, submit an HTTP <code>POST</code> request to <code>/signalk/v2/api/weather/_providers/_default/{id}</code> where <code>{id}</code> is the identifier of the weather provider to use as the <em>default</em>.</p>
<p><em>Example:</em></p>
<pre><code class="typescript"><span class="hl-2">HTTP</span><span class="hl-0"> </span><span class="hl-2">POST</span><span class="hl-0"> </span><span class="hl-4">"/signalk/v2/api/weather/_providers/_default/openweather"</span>
</code><button type="button">Copy</button></pre>
</div></div><div class="col-sidebar"><div class="page-menu"><details open class="tsd-accordion tsd-page-navigation"><summary class="tsd-accordion-summary"><svg width="20" height="20" viewBox="0 0 24 24" fill="none" aria-hidden="true"><use href="../../assets/icons.svg#icon-chevronDown"></use></svg><h3>On This Page</h3></summary><div class="tsd-accordion-details"><a href="#providers"><span>Providers</span></a><ul><li><a href="#listing-the-available-weather-providers"><span>Listing the available <wbr/>Weather <wbr/>Providers</span></a></li><li><a href="#getting-the-default-provider-identifier"><span>Getting the <wbr/>Default <wbr/>Provider identifier</span></a></li><li><a href="#setting-a-provider-as-the-default"><span>Setting a <wbr/>Provider as the <wbr/>Default</span></a></li></ul></div></details></div><div class="site-menu"><nav class="tsd-navigation"><a href="../../modules.html">Signal K</a><ul class="tsd-small-nested-navigation" id="tsd-nav-container"><li>Loading...</li></ul></nav></div></div></div><footer><p class="tsd-generator">Generated using <a href="https://typedoc.org/" target="_blank">TypeDoc</a></p></footer><div class="overlay"></div></body></html>