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Add support to create aliases

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Signed-off-by: Ahmet Alp Balkan <ahmetb@google.com>
This commit is contained in:
Ahmet Alp Balkan 2017-03-28 18:03:26 -07:00
parent 7ac1963235
commit 231f170968
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GPG Key ID: 3300B90BF29C804E
1 changed files with 39 additions and 5 deletions
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36
kubectx
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@ -25,6 +25,7 @@ USAGE:
kubectx : list the contexts
kubectx <NAME> : switch to context
kubectx - : switch to the previous context
kubectx <NEW_NAME>=<NAME> : create alias for context
kubectx -h|--help : show this message
EOF
}
@ -34,7 +35,8 @@ function current_context {
}
function get_contexts {
kubectl config get-contexts | awk '{print $2}' | tail -n +2
kubectl config view \
-o=jsonpath='{range .contexts[*].name}{@}{"\n"}{end}'
}
function list_contexts {
@ -91,6 +93,36 @@ function swap_context {
set_context "$ctx"
}
function user_of_context {
kubectl config view \
-o=jsonpath="{.contexts[?(@.name==\"${1}\")].context.user}"
}
function cluster_of_context {
kubectl config view \
-o=jsonpath="{.contexts[?(@.name==\"${1}\")].context.cluster}"
}
function alias_context {
local old_name="$1"
local new_name="$2"
local old_user="$(user_of_context $old_name)"
local old_cluster="$(cluster_of_context $old_name)"
if [[ -z "$old_user" || -z "$old_cluster" ]]; then
echo "Cannot retrieve context ${old_name}".
exit 1
fi
kubectl config set-context "${new_name}" \
--cluster="${old_cluster}" \
--user="${old_user}" \
echo "Aliased ${old_name} as ${new_name}."
}
if [[ "$#" -eq 0 ]]; then
list_contexts
elif [[ "$#" -eq 1 ]]; then
@ -98,6 +130,8 @@ elif [[ "$#" -eq 1 ]]; then
usage
elif [[ "$1" = "-" ]]; then
swap_context
elif [[ "$1" =~ (.+)=(.+) ]]; then
alias_context "${BASH_REMATCH[2]}" "${BASH_REMATCH[1]}"
else
set_context "$1"
fi