goi3bar

Finally, a configurable, lightweight and easily extensible replacement for i3status.

Why use this over several other alternatives?

• Speed. This performs better than its' cousins written in interpreted languages (python, php, etc)
• Fine-grained concurrency. You can assign individual timings to all plugins, allowing you to make expensive calls less frequently (think making a network call to retrieve the weather, vs. updating the time).
• Simple configuration. goi3bar is driven by JSON configuration, allowing you to easily customise your i3bar. Have you ever tried to use conky?
• Simple Extensibility. Writing new plugins is much simpler than writing new functionality for a C-based project like conky. There are simple interfaces that let you build your own plugins, and handle JSON configuration. Look in the godoc for Producer, Genreator and Builder.

Talk is cheap! This powers my own i3bar:

Getting started

Dependency: iwconfig for WLAN info. Should be available in $PATH

Either generate a binary with go build, or run go install in the root dir and add $GOPATH/bin to your $PATH, then run the goi3bar binary:

From a file:

goi3bar --config-path ~/.i3/config.json

or through stdin:

cat ~/.i3/config.json | goi3bar

Set either of these as your status_command field in ~/.i3/config

Basic configuration

A configuration file is represented with JSON, consisting of refresh interval and zero or more entries

Each entry has a "package" referring to the plugin it uses, a "name" (anything, but must be unique) and an "options" struct, which will be dependent on the package you are using.

A set of packages come pre-included in the default "goi3bar" binary

Package key	Function
cpu_load	1, 5, 15 minute CPU loads
cpu_util	Current CPU percentage utilisation
memory	Current memory usage
disk_usage	Current free disk space
disk_access	Current data I/O rate
battery	Current battery level/remaining time
network	Information about currently connected networks
clock	Current time

Sample config

This is a very simple config file, there is a sample configuration file in cmd/goi3bar/config.json, which contains configuration for all plugins and all their options.

{
    "interval": "5s",
    "entries": [
        {
            "package": "memory",
            "name": "memory",
            "options": {
                "interval": "10s",
                "warn_threshold": 75,
                "crit_threshold": 85
            }
        }
    ]

TODO

Currently have:

• Configuration via JSON
• Formattable clock
• Memory usage (with configurable color thresholds)
• CPU load averages (with configurable color thresholds)
• Battery values (with automagic discovery and configurable thresholds)
• Network info with funky applet which only shows most preferred connected network
• Disk read/write rates
• Disk usage

Want to have:

• Unit testing!
• More configurability for memory, battery moinitors (e.g., formattable)
• Support for more batteries(?) This was written for a ThinkPad x240 because that's what I have. Pull requests welcome if some battery functionality does not work on your machine.