pulse

pulse: like a fitness tracker for your coding sessions

This repository contains all of the code I've written to gather data for my website.

How it works

After spending some time debugging different language servers in Neovim, I got the idea to write my own server that would simply parse metadata and aggregate statistics about my coding sessions.

I run the server from this repository as a daemon, and it receives remote procedure calls from the neovim plugin pertaining to events such as the opening of buffers, windows gaining focus, the initiation of new nvim processes, etc.

These calls contains the path to the buffer, which the server parses and writes to a log-structured append-only key-value store. The store is a work in progress, but it now includes some core features such as hash indexes, segmentation, and compaction.

The server runs a background job which requests all of the buffers from the KV store, and proceeds to aggregate them to a remote database. I did it this way primarily because I wanted to avoid surpassing the limits set by the free tier for the remote database. If you aren't concerned about costs you could use a much lower aggregation interval than me.

The only things that aren't included in this repository is the API which retrieves the data and the website that displays it. The website has been the most challenging part so far. I wanted it to have a unique look and feel and to build all of the components from scratch. I'm in the process of making it open source, but there are still a few things that I'd like to clean up first!

Running this project

1. Download the binaries

Download and unpack the server and client binaries from the releases. Next, you'll want to make sure that they are reachable from your $PATH.

2. Create a configuration file

Create a configuration file. It should be located at $HOME/.pulse/config.yaml

server:
  name: "pulse-server"
  hostname: "localhost"
  port: "1122"
  aggregationInterval: "15m"
  segmentationInterval: "5m"
  segmentSizeKB: "10"
database:
  address: "redis-<PORT>.xxxxxxxx.redis-cloud.com:<PORT>"
  password: "xxxxxxxx"

3. Launch the server as a daemon

On linux, you can setup a systemd service to run the server, and on macOS you can create a launch daemon.

I'm using a Mac, and my launch daemon configuration looks like this:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
  <dict>

    <key>Label</key>
    <string>dev.conner.pulse.plist</string>

    <key>RunAtLoad</key>
    <true/>

    <key>StandardErrorPath</key>
		<string>/Users/conner/.pulse/logs/stderr.log</string>

    <key>StandardOutPath</key>
		<string>/Users/conner/.pulse/logs/stdout.log</string>

    <key>EnvironmentVariables</key>
    <dict>
      <key>PATH</key>
      <string><![CDATA[/usr/local/bin:/usr/local/sbin:/usr/bin:/bin:/usr/sbin:/sbin]]></string>
    </dict>

    <key>WorkingDirectory</key>
    <string>/Users/conner</string>

    <key>ProgramArguments</key>
    <array>
			<string>/Users/conner/bin/pulse-server</string>
    </array>

		<key>KeepAlive</key>
    <true/>

  </dict>
</plist>

4. Install the neovim plugin

Here is an example using lazy.nvim:

return {
	-- Does not require any configuration.
	{ "creativecreature/pulse" },
}