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Introduce -c/--current options for kubectx/kubens (#171)

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Per #127 the user community wants to have this feature, primarily as
-c and --current flags.

Signed-off-by: Ahmet Alp Balkan <ahmetb@google.com>
This commit is contained in:
Ahmet Alp Balkan 2019-08-30 11:49:49 -07:00 committed by GitHub
parent 1652420a15
commit 28e7c12f51
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5 changed files with 78 additions and 0 deletions
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2
README.md
View File

@ -24,6 +24,7 @@ USAGE:
kubectx : list the contexts
kubectx <NAME> : switch to context <NAME>
kubectx - : switch to the previous context
kubectx -c, --current : show the current context name
kubectx <NEW_NAME>=<NAME> : rename context <NAME> to <NEW_NAME>
kubectx <NEW_NAME>=. : rename current-context to <NEW_NAME>
kubectx -d <NAME> : delete context <NAME> ('.' for current-context)
@ -62,6 +63,7 @@ USAGE:
kubens : list the namespaces
kubens <NAME> : change the active namespace
kubens - : switch to the previous namespace
kubens -c, --current : show the current namespace
```

6
kubectx
View File

@ -30,6 +30,7 @@ USAGE:
kubectx : list the contexts
kubectx <NAME> : switch to context <NAME>
kubectx - : switch to the previous context
kubectx -c, --current : show the current context name
kubectx <NEW_NAME>=<NAME> : rename context <NAME> to <NEW_NAME>
kubectx <NEW_NAME>=. : rename current-context to <NEW_NAME>
kubectx -d <NAME> [<NAME...>] : delete context <NAME> ('.' for current-context)
@ -207,6 +208,11 @@ main() {
elif [[ "$#" -eq 1 ]]; then
if [[ "${1}" == "-" ]]; then
swap_context
elif [[ "${1}" == '-c' || "${1}" == '--current' ]]; then
# we don't call current_context here for two reasons:
# - it does not fail when current-context property is not set
# - it does not return a trailing newline
kubectl config current-context
elif [[ "${1}" == '-h' || "${1}" == '--help' ]]; then
usage
elif [[ "${1}" =~ ^-(.*) ]]; then

3
kubens
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@ -30,6 +30,7 @@ USAGE:
kubens : list the namespaces in the current context
kubens <NAME> : change the active namespace of current context
kubens - : switch to the previous namespace in this context
kubens -c, --current : show the current namespace
kubens -h,--help : show this message
EOF
}
@ -197,6 +198,8 @@ main() {
usage
elif [[ "${1}" == "-" ]]; then
swap_namespace
elif [[ "${1}" == '-c' || "${1}" == '--current' ]]; then
current_namespace
elif [[ "${1}" =~ ^-(.*) ]]; then
echo "error: unrecognized flag \"${1}\"" >&2
usage

27
test/kubectx.bats
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@ -113,6 +113,33 @@ load common
[ "$status" -eq 1 ]
}
@test "-c/--current fails when no context set" {
use_config config1
run "${COMMAND}" -c
echo "$output"
[ $status -eq 1 ]
run "${COMMAND}" --current
echo "$output"
[ $status -eq 1 ]
}
@test "-c/--current prints the current context" {
use_config config1
run "${COMMAND}" user1@cluster1
[ $status -eq 0 ]
run "${COMMAND}" -c
echo "$output"
[ $status -eq 0 ]
[[ "$output" = "user1@cluster1" ]]
run "${COMMAND}" --current
echo "$output"
[ $status -eq 0 ]
[[ "$output" = "user1@cluster1" ]]
}
@test "rename context" {
use_config config2

40
test/kubens.bats
View File

@ -102,3 +102,43 @@ load common
[[ "$status" -eq 1 ]]
[[ "$output" = *"current-context is not set"* ]]
}
@test "-c/--current works when no namespace is set on context" {
use_config config1
switch_context user1@cluster1
run ${COMMAND} "-c"
echo "$output"
[[ "$status" -eq 0 ]]
[[ "$output" = "default" ]]
run ${COMMAND} "--current"
echo "$output"
[[ "$status" -eq 0 ]]
[[ "$output" = "default" ]]
}
@test "-c/--current prints the namespace after it is set" {
use_config config1
switch_context user1@cluster1
${COMMAND} ns1
run ${COMMAND} "-c"
echo "$output"
[[ "$status" -eq 0 ]]
[[ "$output" = "ns1" ]]
run ${COMMAND} "--current"
echo "$output"
[[ "$status" -eq 0 ]]
[[ "$output" = "ns1" ]]
}
@test "-c/--current fails when current context is not set" {
use_config config1
run ${COMMAND} -c
echo "$output"
[[ "$status" -eq 1 ]]
run ${COMMAND} --current
echo "$output"
[[ "$status" -eq 1 ]]
}