While the MPD web thing has several basic actions like play, pause, and skip, I’ve added one that takes some additional input, which will queue a series of random songs. Add ActionsĪ music player can also have a lot of actions. We’ve also set up some metadata for the property, including a description, value type, and a minimum and maximum value. When the volume is set via a PUT request, the value forwarder is used to forward the new value to the actual device, which in this case is the MPD server. The Value piece is an object that essentially stores a cached value and a “value forwarder” callback. We’ve now created a Property that allows us to GET and PUT the playback volume. New Value(status.getVolume(), v -> tVolume((int)v)) VolumeMetadata.put("description", "Playback volume") Essentially we’ll do the following:įirst off, let’s import our library of choice. Instructions for doing so can be found on the respective Github project page, or you can look here. You’ll then want to add the webthing library as a dependency. For example, you might create a new project in IntelliJ IDEA for Java, or run npm init to start a new Node.js project. To start, initialize an empty project for your language of choice. While they may not be entirely idiomatic for their respective languages, doing this allows us to maintain all the libraries more easily, which is incredibly valuable while the Web Thing API is still a living draft. The Python, Node.js, and Java web thing libraries all have essentially the same API.
More importantly, this example is primarily meant to demonstrate the Things Framework, which can be used to create an endless variety of web things. Some Quick NotesĪlthough this example is written for MPD, it would be easily portable to other music players with an API, or you could build your own player using this example as a base.
#Python nodejs mac os
I won’t cover installation here, but MPD can be installed via your package manager on Linux, Homebrew on Mac OS X, or with binaries on Windows. MPD operates in a client/server model, and is controllable over TCP with a simple text-based protocol. The Music Player Daemon is an open-source music player that has been around since 2003. The libraries we’ll be using here are webthing-python, webthing-node, and webthing-java. To demonstrate, we’ll be turning the Music Player Daemon (MPD) into a web thing. These languages are definitely not optimal for small embedded devices this tutorial is intended for higher-end devices that can run these languages with ease, or even your own desktop computer.
#Python nodejs how to
This time, I’m going to show you how to build web things with Python, Node.js, or Java. Last week, James built an ESP8266 web thing. The Mozilla IoT team recently released the Things Framework, which allows you to build IoT devices that speak the Web Thing API.
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