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Handle the case when ingress name has dot #532

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ZhiminXiang
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Fixes #
#514

Release Note

Fix the incorrect Gateway name format for DomainMapping auto TLS feature for Istio implmenetation

@ZhiminXiang ZhiminXiang requested a review from a team as a code owner March 2, 2021 19:11
@google-cla google-cla bot added the cla: yes Indicates the PR's author has signed the CLA. label Mar 2, 2021
@knative-prow-robot knative-prow-robot added the size/M Denotes a PR that changes 30-99 lines, ignoring generated files. label Mar 2, 2021
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/assign @nak3 @tcnghia

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codecov bot commented Mar 2, 2021

Codecov Report

Merging #532 (8b4bf3e) into main (713aacd) will increase coverage by 0.10%.
The diff coverage is 100.00%.

Impacted file tree graph

@@            Coverage Diff             @@
##             main     #532      +/-   ##
==========================================
+ Coverage   81.43%   81.54%   +0.10%     
==========================================
  Files          15       15              
  Lines        1018     1024       +6     
==========================================
+ Hits          829      835       +6     
  Misses        110      110              
  Partials       79       79              
Impacted Files Coverage Δ
pkg/reconciler/ingress/resources/gateway.go 85.63% <100.00%> (+0.47%) ⬆️

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// We directly copy this function instead of importing it into vendor and using it because
// if this function is changed in the upstream (for example, Istio allows the dot in the future), we don't want to
// import the change without awareness because it could break the compatibility of Gateway name generation.
func isDNS1123Label(value string) bool {
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I think technically we can either use istio one or k8s one.

But I am inclined to copy the function into this repo because if there is any change to this function in the upstream (e.g. allowing dot in the future), then the gateway name could be changed implicitly and we may not be aware of this.
If the version of the function we use in the our code is not compatible with the requirement of Istio or k8s in the future, then our E2E tests should be failed and we will get notice about it. WDYT?

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I get your point, but this is not some random function, it follows RFC 1123. It is not going to change.
Up to you.

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Left a few comments but looks good to me overall.

@@ -304,6 +323,14 @@ func MakeTLSServers(ing *v1alpha1.Ingress, ingressTLS []v1alpha1.IngressTLS, gat
return SortServers(servers), nil
}

func portNamePrefix(prefix, ingressName string) string {
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Suggested change
func portNamePrefix(prefix, ingressName string) string {
func portNamePrefix(ingressNamespace, ingressName string) string {

or

Suggested change
func portNamePrefix(prefix, ingressName string) string {
func portNamePrefix(prefix, suffix string) string {

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Done

const GatewayHTTPPort = 80
const (
GatewayHTTPPort = 80
DNS1123LabelMaxLength = 63 // Public for testing only.
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Suggested change
DNS1123LabelMaxLength = 63 // Public for testing only.
dns1123LabelMaxLength = 63

I think this is not used for testing 🤔

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Done

Base automatically changed from master to main March 4, 2021 16:24
@markusthoemmes markusthoemmes requested a review from a team as a code owner March 4, 2021 16:24
@markusthoemmes markusthoemmes requested a review from a team March 4, 2021 16:24
@markusthoemmes markusthoemmes requested a review from a team as a code owner March 4, 2021 16:24
@markusthoemmes markusthoemmes requested review from a user and removed request for a team March 4, 2021 16:24
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The following is the coverage report on the affected files.
Say /test pull-knative-sandbox-net-istio-go-coverage to re-run this coverage report

File Old Coverage New Coverage Delta
pkg/reconciler/ingress/resources/gateway.go 85.6% 86.2% 0.6

@knative-prow-robot knative-prow-robot added the lgtm Indicates that a PR is ready to be merged. label Mar 6, 2021
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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: nak3

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@knative-prow-robot knative-prow-robot added the approved Indicates a PR has been approved by an approver from all required OWNERS files. label Mar 6, 2021
@knative-prow-robot knative-prow-robot merged commit eebb4e6 into knative-extensions:main Mar 6, 2021
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6 participants