embetty-server ·

Embetty displays remote content like tweets or YouTube videos without compromising your privacy. embetty-server acts as a proxy and provides the necessary data.

Embetty server can be run in two different ways:

Use the official Docker image to run it in a container.
Install it directly and use a process manager.

It's necessary to configure a reverse proxy to make Embetty server reachable either way.

Running Embetty server with Docker

The docker image exposes the server on port 8080 and can be configured using environment variables.

$ docker run \
  -p 8080:8080 \
  --name embetty \
  --rm \
  -e VALID_ORIGINS=https://example.com \
  -e TWITTER_ACCESS_TOKEN_KEY=... \
  -e TWITTER_ACCESS_TOKEN_SECRET=... \
  -e TWITTER_CONSUMER_KEY=... \
  -e TWITTER_CONSUMER_SECRET=... \
  heiseonline/embetty-server:latest

Running Embetty server with a process manager

This requires Node.js version 8 or later.

Install Embetty server by running yarn global add @heise/embetty-server. This makes the embetty command available on the server.
Setup a process manager like Forever, PM2 or StrongLoop Process Manager.
Configure the Process manager to run embetty start. The command embetty start --help prints a list of all supported options.

Configuration

Embetty server can be configured using the following environment variables:

Variable	Required	Description
`URL_BASE`	no	The base URL of the Embetty server instance, e.g. `https://my-server.com/path/to/embetty`.
`DEBUG`	no	This variable controls the output of log messages. You may set it to `embetty.*` to log all Embetty messages to `STDOUT`.
`EMBETTY_CACHE`	no	Connection string of a cache adapter. Currently Redis (example: `redis://`) and LRU (example: `lru://`) are supported.
`PORT`	no	This variable can be used to specify the port on which Embetty Server listens. Default: `3000`
`TWITTER_ACCESS_TOKEN_KEY`	[1]	Twitter Access Token
`TWITTER_ACCESS_TOKEN_SECRET`	[1]	Twitter Access Token Secret
`TWITTER_CONSUMER_KEY`	[1]	Twitter consumer Key (API Key)
`TWITTER_CONSUMER_SECRET`	[1]	Twitter consumer Secret (API Secret)
`VALID_ORIGINS`	yes	Contains a comma-separated list of allowed origins. Examples: `https://example.com`, `https://a.example.com,https://b.example.com` or `*`.

Twitter

To display tweets with Embetty, the Twitter environment variables listed above need to be defined. Both tokens, the key and the secret can be obtained by creating a Twitter app.

Testing the server setup

The setup can be tested by sending a request to the running server. If everything was set up correctly, JSON data and the HTTP status code 200 are returned.

$ curl -i http://localhost:8080/version
$ curl -i http://localhost:8080/tweet/985882036777955328
$ curl -i http://localhost:8080/video/youtube/m6UOo2YGbIE-poster-image

Using Embetty with Google AMP ⚡️

Embetty server supports Google AMP ⚡️ out of the box via <amp-iframe>:

Tweet:

<amp-iframe width="200" height="100"
  sandbox="allow-scripts allow-same-origin"
  layout="responsive"
  resizable
  frameborder="0"
  src="https://your-site.com/path/to/embetty-server/tweet/1004988454978179072.amp"
>
  <div overflow tabindex=0 role=button aria-label=""></div>
</amp-iframe>

Vimeo:

<amp-iframe width="200" height="100"
  sandbox="allow-scripts allow-same-origin"
  layout="responsive"
  resizable
  frameborder="0"
  src="https://your-site.com/path/to/embetty-server/video/vimeo/1084537.amp"
>
  <div overflow tabindex=0 role=button aria-label=""></div>
</amp-iframe>

YouTube:

<amp-iframe width="200" height="100"
  sandbox="allow-scripts allow-same-origin"
  layout="responsive"
  resizable
  frameborder="0"
  src="https://your-site.com/path/to/embetty-server/video/youtube/m6UOo2YGbIE.amp"
>
  <div overflow tabindex=0 role=button aria-label=""></div>
</amp-iframe>

Facebook:

<amp-iframe width="200" height="100"
  sandbox="allow-scripts allow-same-origin"
  layout="responsive"
  resizable
  frameborder="0"
  src="https://your-site.com/path/to/embetty-server/video/facebook/10156049485672318.amp"
>
  <div overflow tabindex=0 role=button aria-label=""></div>
</amp-iframe>

Contributing to Embetty

See Contributing.

License

Embetty server is MIT licensed.

heiseonline/embetty-server

heiseonline

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