Making a new git ref to a subtree of relevant inputs for a build

by bureado 3 years ago

GNU/Linux ◆ xterm-256color ◆ bash 1065 views

In this demo, we detect relevant build inputs (using naive filesystem monitoring for reads) and create a new tree. But instead of pointing a commit to it, we point a new reference which is named as the build-id hash of the binary artifact. This way, someone with the binary can query the specific inputs right from native Git repository metadata.

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You can download this recording in asciicast v2 format, as a .cast file.

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Replay in terminal

You can replay the downloaded recording in your terminal using the asciinema play command:

asciinema play 433816.cast

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Use with stand-alone player on your website

Download asciinema player from the releases page (you only need .js and .css file), then use it like this:

<!DOCTYPE html>
<html>
<head>
  <link rel="stylesheet" type="text/css" href="asciinema-player.css" />
</head>
<body>
  <div id="player"></div>
  <script src="asciinema-player.min.js"></script>
  <script>
    AsciinemaPlayer.create(
      '/assets/433816.cast',
      document.getElementById('player'),
      { cols: 134, rows: 34 }
    );
  </script>
</body>
</html>

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While this site doesn't provide GIF conversion at the moment, you can still do it yourself with the help of asciinema GIF generator utility - agg.

Once you have it installed, generate a GIF with the following command:

agg https://asciinema.org/a/433816 demo.gif

Or, if you already downloaded the recording file:

agg demo.cast demo.gif

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See agg manual for full usage instructions.