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add optional kubecontext shortening for gke and eks contexts

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This is done via an optional array parameter that lists
shortening stragies to be applied. Currently there are
only two supported strategies: 'gke' and 'eks'.

  # Shorten gke and eks cluster names:
  #
  #   - gke_projectname_availability-zone_cluster-01         => cluster-01
  #   - arn:aws:eks:us-east-1:XXXXXXXXXXXX:cluster/eks-infra => eks-infra
  #
  # This transformation is applied before class matching and content
  # expansion.
  POWERLEVEL9K_KUBECONTEXT_SHORTEN=(gke eks)

For https://github.com/romkatv/powerlevel10k/issues/139.
This commit is contained in:
romkatv 2019-07-29 21:56:15 +02:00
parent 63f72c756f
commit 5bcbee96e4
1 changed files with 53 additions and 12 deletions
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65
internal/p10k.zsh
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@ -2883,6 +2883,7 @@ prompt_dir_writable() {
################################################################
# Kubernetes Current Context/Namespace
prompt_kubecontext() {
unset P9K_KUBECONTEXT_{NAME,CLUSTER,NAMESPACE}
(( $+commands[kubectl] )) || return
local cfg
local -a key
@ -2893,29 +2894,68 @@ prompt_kubecontext() {
done
if ! _p9k_cache_get $0 "${key[@]}"; then
local ctx="$(kubectl config view -o=jsonpath='{.current-context}')"
if [[ -n $ctx ]]; then
local p="{.contexts[?(@.name==\"$ctx\")].context.namespace}"
local ns="${$(kubectl config view -o=jsonpath=$p):-default}"
if [[ $ctx != $ns && ($ns != default || $_POWERLEVEL9K_KUBECONTEXT_SHOW_DEFAULT_NAMESPACE == 1) ]]; then
ctx+="/$ns"
fi
local context cluster namespace
() {
local cfg && cfg=(${(f)"$(kubectl config view -o=yaml)"}) || return
local ctx=(${(@M)cfg:#current-context:[[:space:]]*})
(( $#ctx == 1 )) || return
context=${${ctx[1]}[(w)2]} # TODO: figure out how values with spaces look in yaml
local -i pos=${cfg[(i)contexts:]}
(( pos <= $#cfg )) || return
shift $pos cfg
pos=${cfg[(i) name: $context]}
(( pos <= $#cfg )) || return
(( --pos ))
for ((; pos > 0; --pos)); do
local line=$cfg[pos]
case $line in
'- context:') return;;
' cluster:'*) cluster=${line[(w)2]};;
' namespace:'*) namespace=${line[(w)2]};;
esac
done
}
local text=$context
local ns=${namespace:-default}
if [[ $context != $ns && ($ns != default || $_POWERLEVEL9K_KUBECONTEXT_SHOW_DEFAULT_NAMESPACE == 1) ]]; then
text+="/$ns"
fi
local shorten
for shorten in $_POWERLEVEL9K_KUBECONTEXT_SHORTEN; do
case $shorten in
gke)
# gke_projectname_availability-zone_cluster-01 => cluster-01
if [[ $cluster == gke_* ]]; then
local parts=(${(s:_:)cluster})
(( $#parts > 3 )) && text=$parts[4,-1]
break
fi
;;
eks)
# arn:aws:eks:us-east-1:XXXXXXXXXXXX:cluster/eks-infra
if [[ $cluster == (#b)arn:aws:eks:[[:alnum:]-]##:[[:digit:]]##:cluster/(*) ]]; then
[[ -n $match[1] ]] && text=$match[1]
break
fi
esac
done
local suf
if [[ -n $ctx ]]; then
if [[ -n $text ]]; then
local pat class
for pat class in "${_POWERLEVEL9K_KUBECONTEXT_CLASSES[@]}"; do
if [[ $ctx == ${~pat} ]]; then
if [[ $text == ${~pat} ]]; then
[[ -n $class ]] && suf=_${(U)class}
break
fi
done
fi
_p9k_cache_set "$ctx" "$suf"
_p9k_cache_set "$context" "$cluster" "$namespace" "$text" "$suf"
fi
[[ -n $_p9k_cache_val[1] ]] || return
_p9k_prompt_segment $0$_p9k_cache_val[2] magenta white KUBERNETES_ICON 0 '' "${_p9k_cache_val[1]//\%/%%}"
typeset -g P9K_KUBECONTEXT_NAME=$_p9k_cache_val[1]
typeset -g P9K_KUBECONTEXT_CLUSTER=$_p9k_cache_val[2]
typeset -g P9K_KUBECONTEXT_NAMESPACE=$_p9k_cache_val[3]
_p9k_prompt_segment $0$_p9k_cache_val[5] magenta white KUBERNETES_ICON 0 '' "${_p9k_cache_val[4]//\%/%%}"
}
################################################################
@ -3676,6 +3716,7 @@ _p9k_init_params() {
_p9k_declare -e POWERLEVEL9K_NODEENV_LEFT_DELIMITER "["
_p9k_declare -e POWERLEVEL9K_NODEENV_RIGHT_DELIMITER "]"
_p9k_declare -b POWERLEVEL9K_KUBECONTEXT_SHOW_DEFAULT_NAMESPACE 1
_p9k_declare -a POWERLEVEL9K_KUBECONTEXT_SHORTEN -- gke eks
# Defines context classes for the purpose of applying different styling to different contexts.
#
# POWERLEVEL9K_KUBECONTEXT_CLASSES must be an array with even number of elements. The first