initial cloudflare dns controller

.dockerignore

@@ -0,0 +1,24 @@
+# Ignore everything
+**
+
+# Exclude folders relevant for build
+!.git/
+!.dockerignore
+!charts/
+!cmd/
+!docs/
+!example/
+!hack/
+!pkg/
+!test/
+!tools/
+!vendor/
+
+!.gitignore
+!.golangci.yaml
+
+!go.mod
+!go.sum
+
+!VERSION
+!Makefile

.github/ISSUE_TEMPLATE/bug.md

@@ -0,0 +1,38 @@
+---
+name: Bug Report
+about: Report a bug encountered while working with this Gardener extension
+labels: kind/bug
+
+---
+
+**How to categorize this issue?**
+<!--
+Please select area, kind, and priority for this issue. This helps the community categorizing it.
+Replace below TODOs or exchange the existing identifiers with those that fit best in your opinion.
+If multiple identifiers make sense you can also state the commands multiple times, e.g.
+  /area control-plane
+  /area auto-scaling
+  ...
+
+"/area" identifiers:     audit-logging|auto-scaling|backup|certification|control-plane-migration|control-plane|cost|delivery|dev-productivity|disaster-recovery|documentation|high-availability|logging|metering|monitoring|networking|open-source|ops-productivity|os|performance|quality|robustness|scalability|security|storage|testing|usability|user-management
+"/kind" identifiers:     api-change|bug|cleanup|discussion|enhancement|epic|impediment|poc|post-mortem|question|regression|task|technical-debt|test
+-->
+/area TODO
+/kind bug
+/platform gcp
+
+**What happened**:
+
+**What you expected to happen**:
+
+**How to reproduce it (as minimally and precisely as possible)**:
+
+**Anything else we need to know?**:
+
+**Environment**:
+
+- Gardener version (if relevant):
+- Extension version:
+- Kubernetes version (use `kubectl version`):
+- Cloud provider or hardware configuration:
+- Others:

.github/ISSUE_TEMPLATE/feature.md

@@ -0,0 +1,26 @@
+---
+name: Enhancement Request
+about: Suggest an enhancement for this extension
+labels: kind/enhancement
+
+---
+
+**How to categorize this issue?**
+<!--
+Please select area, kind, and priority for this issue. This helps the community categorizing it.
+Replace below TODOs or exchange the existing identifiers with those that fit best in your opinion.
+If multiple identifiers make sense you can also state the commands multiple times, e.g.
+  /area control-plane
+  /area auto-scaling
+  ...
+
+"/area" identifiers:     audit-logging|auto-scaling|backup|certification|control-plane-migration|control-plane|cost|delivery|dev-productivity|disaster-recovery|documentation|high-availability|logging|metering|monitoring|networking|open-source|ops-productivity|os|performance|quality|robustness|scalability|security|storage|testing|usability|user-management
+"/kind" identifiers:     api-change|bug|cleanup|discussion|enhancement|epic|impediment|poc|post-mortem|question|regression|task|technical-debt|test
+-->
+/area TODO
+/kind enhancement
+/platform gcp
+
+**What would you like to be added**:
+
+**Why is this needed**:

.github/ISSUE_TEMPLATE/flaking-test.md

@@ -0,0 +1,34 @@
+---
+name: Flaking Test
+about: Report flaky tests or jobs in Gardener CI
+title: "[Flaky Test] FLAKING TEST/SUITE"
+labels: kind/flake
+
+---
+
+<!-- Please only use this template for submitting reports about flaky tests or jobs (pass or fail with no underlying change in code) in Gardener CI -->
+
+**How to categorize this issue?**
+<!--
+Please select area, kind, and priority for this issue. This helps the community categorizing it.
+Replace below TODOs or exchange the existing identifiers with those that fit best in your opinion.
+If multiple identifiers make sense you can also state the commands multiple times, e.g.
+  /area control-plane
+  /area auto-scaling
+  ...
+
+"/area" identifiers:     audit-logging|auto-scaling|backup|certification|control-plane-migration|control-plane|cost|delivery|dev-productivity|disaster-recovery|documentation|high-availability|logging|metering|monitoring|networking|open-source|ops-productivity|os|performance|quality|robustness|scalability|security|storage|testing|usability|user-management
+"/kind" identifiers:     api-change|bug|cleanup|discussion|enhancement|epic|impediment|poc|post-mortem|question|regression|task|technical-debt|test
+-->
+/area testing
+/kind flake
+/platform gcp
+
+**Which test(s)/suite(s) are flaking**:
+
+**CI link**:
+
+**Reason for failure**:
+
+**Anything else we need to know**:
+

.github/ISSUE_TEMPLATE/support.md

@@ -0,0 +1,14 @@
+---
+name: Support Request
+about: Support request or question relating to this extension
+labels: kind/question
+
+---
+
+<!--
+STOP -- PLEASE READ!
+
+GitHub is not the right place for support requests.
+
+If you're looking for help, please post your question on the [Kubernetes Slack](http://slack.k8s.io/) ([#gardener](https://kubernetes.slack.com/messages/gardener) channel) or join our [bi-weekly meetings](https://gardener.cloud/docs/contribute/#bi-weekly-meetings).
+-->

.github/pull_request_template.md

@@ -0,0 +1,39 @@
+**How to categorize this PR?**
+<!--
+Please select area, kind, and priority for this pull request. This helps the community categorizing it.
+Replace below TODOs or exchange the existing identifiers with those that fit best in your opinion.
+If multiple identifiers make sense you can also state the commands multiple times, e.g.
+  /area control-plane
+  /area auto-scaling
+  ...
+
+"/area" identifiers:     audit-logging|auto-scaling|backup|certification|control-plane-migration|control-plane|cost|delivery|dev-productivity|disaster-recovery|documentation|high-availability|logging|metering|monitoring|networking|open-source|ops-productivity|os|performance|quality|robustness|scalability|security|storage|testing|usability|user-management
+"/kind" identifiers:     api-change|bug|cleanup|discussion|enhancement|epic|impediment|poc|post-mortem|question|regression|task|technical-debt|test
+
+For Gardener Enhancement Proposals (GEPs), please check the following [documentation](https://github.com/gardener/gardener/tree/master/docs/proposals/README.md) before submitting this pull request.
+-->
+/area TODO
+/kind TODO
+/platform gcp
+
+**What this PR does / why we need it**:
+
+**Which issue(s) this PR fixes**:
+Fixes #
+
+**Special notes for your reviewer**:
+
+**Release note**:
+<!--
+Write your release note:
+1. Enter your release note in the below block.
+2. If no release note is required, just write "NONE" within the block.
+
+Format of block header: <category> <target_group>
+Possible values:
+- category:       breaking|feature|bugfix|doc|other
+- target_group:   user|operator|developer|dependency
+-->
+```other operator
+
+```

.github/workflows/default.yaml

@@ -0,0 +1,32 @@
+name: Default
+
+on:
+  workflow_dispatch: {}
+  push:
+    branches:
+     - main
+
+jobs:
+  default:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v1
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Login to Github Packages
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GHCR_TOKEN }}
+      - name: Build image and push to Docker Hub and GitHub Container Registry
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          target: gardener-extension-provider-dns-cloudflare
+          context: ./
+          # Note: tags has to be all lower-case
+          tags: |
+            ghcr.io/schrodit/gardener-extension-provider-dns-cloudflare:latest

.github/workflows/release.yaml

@@ -0,0 +1,41 @@
+name: Release
+
+on:
+  workflow_dispatch: {}
+
+jobs:
+  default:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v1
+        with:
+          token: ${{ secrets.GHCR_TOKEN }}
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Login to Github Packages
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GHCR_TOKEN }}
+      - name: Set Version
+        run: echo "::set-output name=version::$(cat ./VERSION)"
+        id: version
+      - name: Build image and push to Docker Hub and GitHub Container Registry
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          target: gardener-extension-provider-dns-cloudflare
+          context: ./
+          # Note: tags has to be all lower-case
+          tags: |
+            ghcr.io/schrodit/gardener-extension-provider-dns-cloudflare:${{ steps.version.outputs.version }}
+
+      - run: git config --global user.name 'schrodit'
+      - run: git config --global user.email 'noreply@timschrodi.tech'
+      - uses: ncipollo/release-action@v1
+        with:
+          token: ${{ secrets.GHCR_TOKEN }}
+          tag: ${{ steps.version.outputs.version }}

.golangci.yaml

@@ -0,0 +1,20 @@
+run:
+  concurrency: 4
+  deadline: 10m
+
+linters:
+  disable:
+  - unused
+  enable:
+  - revive
+
+issues:
+  exclude-use-default: false
+  exclude:
+  # revive
+  - var-naming # ((var|const|struct field|func) .* should be .*
+  - dot-imports # should not use dot imports
+  - package-comments # package comment should be of the form
+  - indent-error-flow # if block ends with a return statement, so drop this else and outdent its block
+  - "exported: (type|func) name will be used as .* by other packages, and that stutters;"
+

CODEOWNERS

@@ -0,0 +1,2 @@
+# gardener-extension-provider-gcp maintainers
+*   @gardener/gardener-extension-provider-gcp-maintainers @gardener/gardener-maintainers

CONTRIBUTING.md

@@ -0,0 +1 @@
+Please refer to the [Gardener contributor guide](https://github.com/gardener/documentation/blob/master/CONTRIBUTING.md).

Dockerfile

@@ -0,0 +1,16 @@
+############# builder
+FROM golang:1.18 AS builder
+
+WORKDIR /go/src/github.com/schrodit/gardener-extension-provider-dns-cloudflare
+COPY . .
+RUN make install
+
+############# base image
+FROM alpine:3.13.7 AS base
+
+############# gardener-extension-provider-dns-cloudflare
+FROM base AS gardener-extension-provider-dns-cloudflare
+
+COPY charts /charts
+COPY --from=builder /go/bin/gardener-extension-provider-dns-cloudflare /gardener-extension-provider-dns-cloudflare
+ENTRYPOINT ["/gardener-extension-provider-dns-cloudflare"]