Feature: Truncate kubectl context using variables

[rodrigobdz]

Truncate kubectl output using environment variables.

Description

Requires the following variables to be defined.

Example variable definition:

set -x tide_kubectl_truncation_strategy l
set -x tide_kubectl_truncation_length 31

Motivation and Context

My kubectl context is too large and almost fills an entire line.

Same approach as in:

tide/functions/_tide_item_git.fish

Line 2 in 447945d

if git branch --show-current 2>/dev/null | string shorten -"$tide_git_truncation_strategy"m$tide_git_truncation_length | read -l location

Closes #

Screenshots (if appropriate)

How Has This Been Tested

I tested the changes by modifying the file $HOME/.config/fish/functions/_tide_item_kubectl.fish.

• I have tested using Linux.
• I have tested using MacOS.

Checklist

• I am ready to update the wiki accordingly.
• I have updated the tests accordingly.

[olujicz]

I can confirm that this is working on Linux.

[rodrigobdz]

Thanks @olujicz. I checked the Linux test accordingly.

[0xMH]

This doesn't work in MacOS 14.2.1.
Maybe use AWK instead of string?

function _tide_item_kubectl
    set context (kubectl config view --minify --output 'jsonpath={.current-context}/{..namespace}' 2>/dev/null | \
                 awk -v len="$tide_kubectl_truncation_length" '{print substr($0, 1, len)}')
    if set -q context[1]
        _tide_print_item kubectl $tide_kubectl_icon' ' (string replace -r '/(|default)$' '' $context)
    end
end

[rodrigobdz]

@0xMH I am open to using awk but the snippet above returns the beginning and not the end of the string.

Example:

The command

kubectl config view --minify --output 'jsonpath={.current-context}/{..namespace}'

returns the untruncated string:

arn:aws:eks:<region>:<numbers>:cluster/<clustername>/<namespace>

The snippet above returns arn:aws:eks:<region>:<some_numbers> instead of <clustername>/<namespace> for a given string length.

[0xMH]

Now?

function _tide_item_kubectl
    set context (kubectl config view --minify --output 'jsonpath={.current-context}/{..namespace}' 2>/dev/null | \
                 awk -v len="$tide_kubectl_truncation_length" '{print substr($0, length($0)-len+1)}')
    if set -q context[1]
        _tide_print_item kubectl $tide_kubectl_icon' ' (string replace -r '/(|default)$' '' $context)
    end
end

[rodrigobdz]

Works

[0xMH]

What do you think, @IlanCosman? I'm interested in advancing this PR for an additional use case, which involves toggling the visibility of the kube context in Fish shell. Specifically, I want it to show only when I'm in the kubie shell.