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Merge pull request #15420 from caesarxuchao/patch-resourceVersion

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Testing if Patch can take resourceVersion as a precondition
This commit is contained in:
Dawn Chen 2015-10-13 11:53:23 -07:00
commit 307fbeec3f
1 changed files with 34 additions and 1 deletions
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35
hack/test-cmd.sh
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@ -428,6 +428,39 @@ runTests() {
# Post-condition: valid-pod POD has image kubernetes/pause
kube::test::get_object_assert pods "{{range.items}}{{$image_field}}:{{end}}" 'kubernetes/pause:'
## If resourceVersion is specified in the patch, it will be treated as a precondition, i.e., if the resourceVersion is different from that is stored in the server, the Patch should be rejected
ERROR_FILE="${KUBE_TEMP}/conflict-error"
## If the resourceVersion is the same as the one stored in the server, the patch will be applied.
# Command
# Needs to retry because other party may change the resource.
for count in $(seq 0 3); do
resourceVersion=$(kubectl get "${kube_flags[@]}" pod valid-pod -o go-template='{{ .metadata.resourceVersion }}')
kubectl patch "${kube_flags[@]}" pod valid-pod -p='{"spec":{"containers":[{"name": "kubernetes-serve-hostname", "image": "nginx"}]},"metadata":{"resourceVersion":"'$resourceVersion'"}}' 2> "${ERROR_FILE}" || true
if grep -q "the object has been modified" "${ERROR_FILE}"; then
kube::log::status "retry $1, error: $(cat ${ERROR_FILE})"
rm "${ERROR_FILE}"
sleep $((2**count))
else
rm "${ERROR_FILE}"
kube::test::get_object_assert pods "{{range.items}}{{$image_field}}:{{end}}" 'nginx:'
break
fi
done
## If the resourceVersion is the different from the one stored in the server, the patch will be rejected.
resourceVersion=$(kubectl get "${kube_flags[@]}" pod valid-pod -o go-template='{{ .metadata.resourceVersion }}')
((resourceVersion+=100))
# Command
kubectl patch "${kube_flags[@]}" pod valid-pod -p='{"spec":{"containers":[{"name": "kubernetes-serve-hostname", "image": "nginx"}]},"metadata":{"resourceVersion":"'$resourceVersion'"}}' 2> "${ERROR_FILE}" || true
# Post-condition: should get an error reporting the conflict
if grep -q "please apply your changes to the latest version and try again" "${ERROR_FILE}"; then
kube::log::status "\"kubectl patch with resourceVersion $resourceVersion\" returns error as expected: $(cat ${ERROR_FILE})"
else
kube::log::status "\"kubectl patch with resourceVersion $resourceVersion\" returns unexpected error or non-error: $(cat ${ERROR_FILE})"
exit 1
fi
rm "${ERROR_FILE}"
## --force replace pod can change other field, e.g., spec.container.name
# Command
kubectl get "${kube_flags[@]}" pod valid-pod -o json | sed 's/"kubernetes-serve-hostname"/"replaced-k8s-serve-hostname"/g' > /tmp/tmp-valid-pod.json
@ -438,7 +471,7 @@ runTests() {
rm /tmp/tmp-valid-pod.json
## kubectl edit can update the image field of a POD. tmp-editor.sh is a fake editor
echo -e '#!/bin/bash\nsed -i "s/kubernetes\/pause/gcr.io\/google_containers\/serve_hostname/g" $1' > /tmp/tmp-editor.sh
echo -e '#!/bin/bash\nsed -i "s/nginx/gcr.io\/google_containers\/serve_hostname/g" $1' > /tmp/tmp-editor.sh
chmod +x /tmp/tmp-editor.sh
EDITOR=/tmp/tmp-editor.sh kubectl edit "${kube_flags[@]}" pods/valid-pod
# Post-condition: valid-pod POD has image gcr.io/google_containers/serve_hostname