Initial commit - PoC version

Author: mikouaj

Diff for: .github/ISSUE_TEMPLATE/bug.md

@@ -0,0 +1,52 @@
+---
+name: Bug
+about: For when something is there, but doesn't work how it should
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+### Community Note
+
+<!--- Please keep this note for the community --->
+
+* Please vote on this issue by adding a 👍 [reaction](https://blog.github.com/2016-03-10-add-reactions-to-pull-requests-issues-and-comments/)
+to the original issue to help the community and maintainers prioritize this request
+* Please do not leave "+1" or "me too" comments, they generate extra noise for issue followers and do
+not help prioritize the request
+* If you are interested in working on this issue or have submitted a pull request, please leave a comment.
+
+### Debug Output
+
+<!---
+Please provide a link to a GitHub Gist containing the complete debug output. Please do NOT paste the debug output in the issue; just paste a link to the Gist.
+
+Note: the debug log may contain sensitive data so please check beforehand and remove it.
+--->
+
+### Panic Output
+
+<!--- If GKE Policy Automation tool produced a panic, please provide a link to a GitHub Gist containing panic output log --->
+
+### Steps to Reproduce
+
+<!--- Please list the steps required to reproduce the issue. --->
+
+### Expected Behavior
+
+<!--- What should have happened? --->
+
+### Actual Behavior
+
+<!--- What actually happened? --->
+
+### References
+
+<!---
+Information about referencing Github Issues: https://help.github.com/articles/basic-writing-and-formatting-syntax/#referencing-issues-and-pull-requests
+
+Are there any other GitHub issues (open or closed) or pull requests that should be linked here? Vendor documentation? For example:
+--->
+
+* #0000

Diff for: .github/ISSUE_TEMPLATE/enhancement.md

@@ -0,0 +1,32 @@
+---
+name: Enhancement
+about: For when something (a resource, field, etc.) is missing, and should be added.
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+### Community Note
+
+<!--- Please keep this note for the community --->
+
+* Please vote on this issue by adding a 👍 [reaction](https://blog.github.com/2016-03-10-add-reactions-to-pull-requests-issues-and-comments/)
+to the original issue to help the community and maintainers prioritize this request
+* Please do not leave "+1" or "me too" comments, they generate extra noise for issue followers and do
+not help prioritize the request
+* If you are interested in working on this issue or have submitted a pull request, please leave a comment.
+
+### Description
+
+<!--- Please leave a helpful description of the feature request here. Including use cases and why it would help you is a great way to convince maintainers to spend time on it. --->
+
+### References
+
+<!---
+Information about referencing Github Issues: https://help.github.com/articles/basic-writing-and-formatting-syntax/#referencing-issues-and-pull-requests
+
+Are there any other GitHub issues (open or closed) or pull requests that should be linked here? Vendor blog posts or documentation?
+--->
+
+* #0000

Diff for: .github/ISSUE_TEMPLATE/question.md

@@ -0,0 +1,13 @@
+---
+name: Question
+about: If you have a question, please check out our community resources!
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+---
+
+Issues on GitHub are intended to be related to bugs or feature requests with provider codebase,
+so we recommend using our other community resources instead of asking here 👍.

Diff for: .github/workflows/build.yml

@@ -0,0 +1,48 @@
+# Copyright 2023 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: Build
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Setup Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: '1.20'
+          check-latest: true
+      - name: Get dependencies
+        run: go mod download
+      - name: Build
+        run: make build
+      - name: Test
+        run: |
+          make test
+          make vet
+      - name: Lint
+        uses: dominikh/[email protected]
+        with:
+          version: "2023.1.3"
+          install-go: false

Diff for: .gitignore

@@ -0,0 +1,23 @@
+# If you prefer the allow list template instead of the deny list, see community template:
+# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
+#
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work
+
+bin/

Diff for: CONTRIBUTING.md

@@ -0,0 +1,28 @@
+# How to Contribute
+
+We'd love to accept your patches and contributions to this project. There are
+just a few small guidelines you need to follow.
+
+## Contributor License Agreement
+
+Contributions to this project must be accompanied by a Contributor License
+Agreement. You (or your employer) retain the copyright to your contribution;
+this simply gives us permission to use and redistribute your contributions as
+part of the project. Head over to <https://cla.developers.google.com/> to see
+your current agreements on file or to sign a new one.
+
+You generally only need to submit a CLA once, so if you've already submitted one
+(even if it was for a different project), you probably don't need to do it
+again.
+
+## Code Reviews
+
+All submissions, including submissions by project members, require review. We
+use GitHub pull requests for this purpose. Consult
+[GitHub Help](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/about-pull-requests/)
+for more information on using pull requests.
+
+## Community Guidelines
+
+This project follows [Google's Open Source Community
+Guidelines](https://opensource.google/conduct/).

Diff for: DEVELOPMENT.md

@@ -0,0 +1,46 @@
+# kube-startup-cpu-boost development guide
+
+## Running development cluster
+
+You can use [KIND](https://github.com/kubernetes-sigs/kind) to get a local cluster for development.
+
+```sh
+cat <<EOF > kind-poc-cluster.yaml
+kind: Cluster
+apiVersion: kind.x-k8s.io/v1alpha4
+name: poc
+nodes:
+- role: control-plane
+- role: worker
+- role: worker
+featureGates:
+  InPlacePodVerticalScaling: true 
+EOF
+kind create cluster --config kind-poc-cluster.yaml
+```
+
+## Deploying development version
+
+1. Install CRDs on a cluster
+
+   ```sh
+   make install
+   ```
+
+2. Build docker image
+
+   ```sh
+   make docker-build IMG=kube-startup-cpu-boost:dev
+   ```
+
+3. Load docker image to development cluster
+
+   ```sh
+   kind load docker-image --name poc kube-startup-cpu-boost:dev
+   ```
+
+4. Deploy controller on a cluster
+
+   ```sh
+   make deploy IMG=docker.io/library/kube-startup-cpu-boost:dev
+   ```

Diff for: Dockerfile

@@ -0,0 +1,50 @@
+# Copyright 2023 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Build the manager binary
+FROM golang:1.20 as builder
+ARG TARGETOS
+ARG TARGETARCH
+
+WORKDIR /workspace
+# Copy the Go Modules manifests
+COPY go.mod go.mod
+COPY go.sum go.sum
+# cache deps before building and copying source so that we don't need to re-download as much
+# and so that source changes don't invalidate our downloaded layer
+RUN go mod download
+
+# Copy the go source
+COPY cmd/main.go cmd/main.go
+COPY api/ api/
+COPY internal/boost/ internal/boost/
+COPY internal/controller/ internal/controller/
+COPY internal/util/ internal/util/
+COPY internal/webhook/ internal/webhook/
+
+# Build
+# the GOARCH has not a default value to allow the binary be built according to the host where the command
+# was called. For example, if we call make docker-build in a local env which has the Apple Silicon M1 SO
+# the docker BUILDPLATFORM arg will be linux/arm64 when for Apple x86 it will be linux/amd64. Therefore,
+# by leaving it empty we can ensure that the container and binary shipped on it will have the same platform.
+RUN CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} go build -a -o manager cmd/main.go
+
+# Use distroless as minimal base image to package the manager binary
+# Refer to https://github.com/GoogleContainerTools/distroless for more details
+FROM gcr.io/distroless/static:nonroot
+WORKDIR /
+COPY --from=builder /workspace/manager .
+USER 65532:65532
+
+ENTRYPOINT ["/manager"]