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⚠️ make *http.Client configurable and use/ share the same http.Client in the default configuration #2122

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inteon
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@inteon inteon commented Jan 8, 2023

client-go has all these fancy NewForConfigAndClient constructor functions.
Let's expose this functionality to the controller-runtime user too & reduce the number of different http.Clients that we use.

In kubernetes/kubernetes#105490, the decision for making http.Client configurable is explained: "when using a custom transport, this has the consequence that each group/version had an independent TCP connection to the API server"
By re-using the same http client for all the clients, we can share customized transports, resulting in no additional TCP connections (see https://github.com/kubernetes/kubernetes/blob/5681b0da14f11165fc53ad82a3400fd027979fc4/test/integration/apiserver/apiserver_test.go#L2517-L2574 for an example)

@k8s-ci-robot k8s-ci-robot added cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. needs-ok-to-test Indicates a PR that requires an org member to verify it is safe to test. labels Jan 8, 2023
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Hi @inteon. Thanks for your PR.

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@k8s-ci-robot k8s-ci-robot added the size/L Denotes a PR that changes 100-499 lines, ignoring generated files. label Jan 8, 2023
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/ok-to-test

@k8s-ci-robot k8s-ci-robot added ok-to-test Indicates a non-member PR verified by an org member that is safe to test. and removed needs-ok-to-test Indicates a PR that requires an org member to verify it is safe to test. labels Jan 17, 2023
@inteon inteon force-pushed the configurable_http_client branch 2 times, most recently from 4cd6e24 to e424441 Compare January 18, 2023 09:26
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Signed-off-by: Tim Ramlot <42113979+inteon@users.noreply.github.com>
@k8s-ci-robot k8s-ci-robot removed the lgtm "Looks good to me", indicates that a PR is ready to be merged. label Jan 31, 2023
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Thx!

/lgtm

@k8s-ci-robot k8s-ci-robot added the lgtm "Looks good to me", indicates that a PR is ready to be merged. label Jan 31, 2023
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/approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: inteon, vincepri

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@k8s-ci-robot k8s-ci-robot added the approved Indicates a PR has been approved by an approver from all required OWNERS files. label Jan 31, 2023
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/retest

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/retest

lyarwood added a commit to lyarwood/ssp-operator that referenced this pull request Jun 26, 2023
https://github.com/kubernetes-sigs/controller-runtime/releases/tag/v0.15.0

* Make `*http.Client` configurable and use/share the same client by
  default kubernetes-sigs/controller-runtime#2122

* Remove dependency injection functions
  kubernetes-sigs/controller-runtime#2134,
  kubernetes-sigs/controller-runtime#2120

* Add context to EventHandler(s)
  kubernetes-sigs/controller-runtime#2139

* `Validator` and `CustomValidator` interfaces have been modified to
  allow returning warnings
  kubernetes-sigs/controller-runtime#2014

* operator-framework is also pinned to ecb9be48837 until a new release
  is cut supporting controller-runtime v0.15.0

Signed-off-by: Lee Yarwood <lyarwood@redhat.com>
ary1992 added a commit to ary1992/gardener that referenced this pull request Jun 28, 2023
lyarwood added a commit to lyarwood/ssp-operator that referenced this pull request Jun 28, 2023
https://github.com/kubernetes-sigs/controller-runtime/releases/tag/v0.15.0

* Make `*http.Client` configurable and use/share the same client by
  default kubernetes-sigs/controller-runtime#2122

* Remove dependency injection functions
  kubernetes-sigs/controller-runtime#2134,
  kubernetes-sigs/controller-runtime#2120

* Add context to EventHandler(s)
  kubernetes-sigs/controller-runtime#2139

* `Validator` and `CustomValidator` interfaces have been modified to
  allow returning warnings
  kubernetes-sigs/controller-runtime#2014

* operator-framework is also pinned to ecb9be48837 until a new release
  is cut supporting controller-runtime v0.15.0

Signed-off-by: Lee Yarwood <lyarwood@redhat.com>
takirala added a commit to mesosphere/kubefed that referenced this pull request Aug 3, 2023
lyarwood added a commit to lyarwood/ssp-operator that referenced this pull request Aug 9, 2023
https://github.com/kubernetes-sigs/controller-runtime/releases/tag/v0.15.0

* Make `*http.Client` configurable and use/share the same client by
  default kubernetes-sigs/controller-runtime#2122

* Remove dependency injection functions
  kubernetes-sigs/controller-runtime#2134,
  kubernetes-sigs/controller-runtime#2120

* Add context to EventHandler(s)
  kubernetes-sigs/controller-runtime#2139

* `Validator` and `CustomValidator` interfaces have been modified to
  allow returning warnings
  kubernetes-sigs/controller-runtime#2014

* operator-framework is also pinned to ecb9be48837 until a new release
  is cut supporting controller-runtime v0.15.0

Signed-off-by: Lee Yarwood <lyarwood@redhat.com>
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5 participants