List of installable add-ons for the WebThings Gateway. These are discoverable from the Settings -> Add-ons page.

Building Add-ons

See here for lots of resources.

Packaging Add-ons

Your add-on should be packaged according to this document.

Packages with Binaries

If your package contains any binaries, i.e. executables, shared libraries, etc., you must cross-compile for any architecture(s) you want to support and distribute a package for each. The currently supported architectures are:

• any: Use this if your package does not contain binaries, i.e. if it's pure Javascript/Python.
• darwin-x64: 64-bit Mac OS X
• linux-arm: Linux on 32-bit ARM (this should be built to support armv6, such as older Raspberry Pi generations)
• linux-arm64: Linux on 64-bit ARM
• linux-ia32: Linux on 32-bit x86
• linux-x64: Linux on 64-bit x86

Furthermore, your packages may have to be distributed separately if the runtime requires it. For instance, if you're distributing a Node.js package with binaries, it will also need to be compiled for different Node.js versions.

Publishing Add-ons to this List

You can submit a pull request or an issue to this project. You must include the following information:

• id: The package ID. This should be the same as in your manifest.json.

• name: A friendly display name for your package. This will be shown in the Gateway's UI. This should be the same as in your manifest.json.

• description: A friendly description for your package. This will be shown in the Gateway's UI.

• author: Name of the add-on author.

• homepage_url: URL which points to the homepage of the add-on, i.e. the GitHub repository. This should be the same as in your manifest.json.

• license_url: URL which points to the add-on's license.

• primary_type: Primary type of this add-on. This should be the same as in your manifest.json. Should be one of: adapter, notifier, extension

• packages: An object describing supported architectures and their packages. Each entry should be of the form:

  {
    "architecture": "my architecture",
    "language": {
      "name": "my language",
      "versions": [
        "any"
      ]
    },
    "url": "https://path.to/my/package.tgz",
    "version": "x.y.z",
    "checksum": "SHA256 of package",
    "api": {
      "min": 2,
      "max": 2
    },
    "gateway": {
      "min": "0.10.0",
      "max": "*"
    }
  }
  • architecture: Replace this with the actual architecture (see the previous section).
  • language: Description of the language the add-on is written in.
    • name: Name of the language. Currently supported:
      • nodejs
      • python
      • binary
      • none - used only in the case of pure UI extensions
    • versions: Versions of the language this package will run with.
      • any: Any version
      • If using Node.js, you should use the NODE_MODULE_VERSION.
      • If using Python, you can include an array such as ["3.5", "3.6", "3.7"].
      • If name is none, versions can be omitted.
  • url: A URL to download the packaged tarball (.tar.gz or .tgz) from.
  • version: The package version. This should be the same as in your manifest.json.
  • checksum: Checksum of the tarball
  • api: The API levels supported by this package. This is only necessary if your add-on supports gateway versions <= 0.9.X. This should be the same as in your package.json, so an object with the following 2 properties:
    • min: The minimum supported API level
    • max: The maximum supported API level
  • gateway: The gateway versions supported by this package.
    • min: The minimum supported gateway version. This should correspond to the strict_min_version in your manifest.json.
    • max: The maximum supported gateway version. This should correspond to the strict_max_version in your manifest.json.

Example Entry

{
  "id": "thing-url-adapter",
  "name": "Web Thing",
  "description": "Native web thing support",
  "author": "WebThingsIO",
  "homepage_url": "https://github.com/WebThingsIO/thing-url-adapter",
  "license_url": "https://github.com/WebThingsIO/thing-url-adapter/blob/master/LICENSE",
  "primary_type": "adapter",
  "packages": [
    {
      "architecture": "linux-arm",
      "language": {
        "name": "nodejs",
        "versions": [
          "57"
        ]
      },
      "version": "0.2.5",
      "url": "https://github.com/WebThingsIO/thing-url-adapter/releases/download/v0.2.5/thing-url-adapter-0.2.5-linux-arm-v8.tgz",
      "checksum": "c58eb9c99294a9905fd00b5ca38c73e2337ea54d4db6daebb7c3b0eb64df5b92",
      "api": {
        "min": 2,
        "max": 2
      },
      "gateway": {
        "min": "0.10.0",
        "max": "*"
      }
    },
    {
      "architecture": "linux-x64",
      "language": {
        "name": "nodejs",
        "versions": [
          "57"
        ]
      },
      "version": "0.2.5",
      "url": "https://github.com/WebThingsIO/thing-url-adapter/releases/download/v0.2.5/thing-url-adapter-0.2.5-linux-x64-v8.tgz",
      "checksum": "2e778ad976cb469be1d41af13716a7d65a9cc4e371c452be2ff2da4ed932941c",
      "api": {
        "min": 2,
        "max": 2
      },
      "gateway": {
        "min": "0.10.0",
        "max": "*"
      }
    },
    {
      "architecture": "darwin-x64",
      "language": {
        "name": "nodejs",
        "versions": [
          "57"
        ]
      },
      "version": "0.2.5",
      "url": "https://github.com/WebThingsIO/thing-url-adapter/releases/download/v0.2.5/thing-url-adapter-0.2.5-darwin-x64-v8.tgz",
      "checksum": "e287c61d844fe832b9dca609546ec2454fe23e4a7753b3ce6f9ee53332fdf53f",
      "api": {
        "min": 2,
        "max": 2
      },
      "gateway": {
        "min": "0.10.0",
        "max": "*"
      }
    }
  ]
}