Galera support

.dockerignore

@@ -0,0 +1,4 @@
+# More info: https://docs.docker.com/engine/reference/builder/#dockerignore-file
+# Ignore build and test binaries.
+bin/
+testbin/

.github/ISSUE_TEMPLATE/bug.md

@@ -0,0 +1,38 @@
+---
+name: Bug
+about: Create a bug report to help us improve
+title: "[Bug] "
+labels: bug
+assignees: mmontes11
+
+---
+
+<!--
+Bugs should be filed for issues encountered whilst operating mariadb-operator/agent.
+Please provide as much detail as possible. 
+-->
+
+**Describe the bug**
+<!--
+A clear and concise description of what the bug is. 
+Tip: you can use 
+```
+<code here>
+```
+for code blocks of your kubectl output or YAML files.
+-->
+
+**Expected behaviour**
+<!--A concise description of what you expected to happen.-->
+
+**Steps to reproduce the bug**
+<!--Steps to reproduce the bug should be clear and easily reproducible to help people
+gain an understanding of the problem.-->
+
+**Additional context**
+<!--Add any other context  here.-->
+
+**Environment details**:
+- Kubernetes version:
+- mariadb-operator version: 
+- agent version: 

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,25 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: "[Feature]"
+labels: feature
+assignees: mmontes11
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+<!--A clear and concise description of what the problem is-->
+
+**Describe the solution you'd like**
+<!--A clear and concise description of what you want to happen.-->
+
+**Describe alternatives you've considered**
+<!--A clear and concise description of any alternative solutions or features you've considered.-->
+
+**Additional context**
+<!--Add any other context  here.-->
+
+**Environment details**:
+- Kubernetes version:
+- mariadb-operator version:
+- agent version:

.github/workflows/ci.yml

@@ -0,0 +1,85 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request: {}
+
+env:
+  GOLANGCI_VERSION: "v1.52.2"
+
+jobs:
+  detect-noop:
+    runs-on: ubuntu-latest
+    outputs:
+      noop: ${{ steps.noop.outputs.should_skip }}
+    steps:
+      - name: Detect no-op changes
+        id: noop
+        uses: fkirc/skip-duplicate-actions@v5.3.0
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          paths_ignore: '["**.md"]'
+          concurrent_skipping: false
+
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    needs: detect-noop
+    if: ${{ needs.detect-noop.outputs.noop != 'true' }}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Setup Go
+        uses: actions/setup-go@v3
+        with:
+          go-version-file: "go.mod"
+          cache: true
+
+      - name: GolangCI Lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          version: ${{ env.GOLANGCI_VERSION }}
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    needs: detect-noop
+    if: ${{ needs.detect-noop.outputs.noop != 'true' }}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Setup Go
+        uses: actions/setup-go@v3
+        with:
+          go-version-file: "go.mod"
+          cache: true
+
+      - name: Build
+        run: make build
+
+      - name: Build Docker
+        run: make docker-build
+        env:
+          PLATFORM: linux/amd64
+
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    needs: detect-noop
+    if: ${{ needs.detect-noop.outputs.noop != 'true' }}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Setup Go
+        uses: actions/setup-go@v3
+        with:
+          go-version-file: "go.mod"
+          cache: true
+
+      - name: Test
+        run: make test

.github/workflows/release.yml

@@ -0,0 +1,77 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - "v*"
+
+env:
+  GORELEASER_VERSION: "v1.18.2"
+
+jobs:
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Fetch tags
+        run: git fetch --force --tags
+
+      - name: Setup QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Setup Docker Buildx
+        uses: docker/setup-buildx-action@v2
+        id: buildx
+
+      - name: Login to container Registry
+        uses: docker/login-action@v2
+        with:
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+          registry: ghcr.io
+
+      - name: Prepare
+        id: prep
+        run: |
+          VERSION=sha-${GITHUB_SHA::8}
+          if [[ $GITHUB_REF == refs/tags/* ]]; then
+            VERSION=${GITHUB_REF/refs\/tags\//}
+          fi
+          echo ::set-output name=BUILD_DATE::$(date -u +'%Y-%m-%dT%H:%M:%SZ')
+          echo ::set-output name=VERSION::${VERSION}
+
+      - name: Publish multi-arch Docker image
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          builder: ${{ steps.buildx.outputs.name }}
+          context: .
+          file: ./Dockerfile
+          platforms: linux/arm64,linux/amd64
+          tags: |
+            ghcr.io/${{ github.repository_owner }}/agent:${{ steps.prep.outputs.VERSION }}
+            ghcr.io/${{ github.repository_owner }}/agent:latest
+          labels: |
+            org.opencontainers.image.title=${{ github.event.repository.name }}
+            org.opencontainers.image.description=${{ github.event.repository.description }}
+            org.opencontainers.image.source=${{ github.event.repository.html_url }}
+            org.opencontainers.image.url=${{ github.event.repository.html_url }}
+            org.opencontainers.image.revision=${{ github.sha }}
+            org.opencontainers.image.version=${{ steps.prep.outputs.VERSION }}
+            org.opencontainers.image.created=${{ steps.prep.outputs.BUILD_DATE }}
+
+      - name: Set GORELEASER_PREVIOUS_TAG
+        run: echo "GORELEASER_PREVIOUS_TAG=$(git tag -l "v*" --sort=-version:refname | head -n 2 | tail -n 1)" >> $GITHUB_ENV
+
+      - name: GoReleaser
+        uses: goreleaser/goreleaser-action@v4
+        with:
+          version: ${{ env.GORELEASER_VERSION }}
+          args: release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -1,6 +1,3 @@
-# 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~
@@ -13,9 +10,16 @@
 
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
+*.html
 
 # Dependency directories (remove the comment below to include it)
-# vendor/
+vendor/
 
-# Go workspace file
-go.work
+# Binaries
+bin/
+
+# Packaged Helm charts
+*.tgz
+
+# Directory to keep MariaDB files used for development
+mariadb/

.golangci.yml

@@ -0,0 +1,31 @@
+linters-settings:
+  gocyclo:
+    min-complexity: 20
+  lll:
+    line-length: 140
+  misspell:
+    locale: US
+
+linters:
+  disable-all: true
+  enable:
+    - unused
+    - errcheck
+    - gocyclo
+    - gofmt
+    - goimports
+    - gosimple
+    - govet
+    - ineffassign
+    - lll
+    - misspell
+    - nestif
+    - staticcheck
+    - typecheck
+    - unused
+    - bodyclose
+    - noctx
+
+run:
+  timeout: 5m
+  go: "1.20"

.goreleaser.yml

@@ -0,0 +1,14 @@
+changelog:
+  use: github-native
+builds:
+  - id: agent
+    main: main.go
+    binary: "agent_{{ .Version }}_{{ .Arch }}"
+    env:
+      - CGO_ENABLED=0
+    goos:
+      - linux
+      - darwin
+    goarch:
+      - amd64
+      - arm64

.vscode/launch.json

@@ -0,0 +1,15 @@
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "Launch Package",
+      "type": "go",
+      "request": "launch",
+      "mode": "auto",
+      "program": "main.go"
+    }
+  ]
+}

Dockerfile

@@ -0,0 +1,21 @@
+FROM golang:1.20.4-alpine3.18 AS builder
+
+ARG TARGETOS
+ARG TARGETARCH
+ENV CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH}
+
+WORKDIR /app
+
+COPY go.mod go.sum /app/
+RUN go mod download
+
+COPY . /app
+RUN go build -o agent main.go
+
+FROM gcr.io/distroless/static AS app
+
+WORKDIR /
+COPY --from=builder /app/agent /bin/agent 
+USER 65532:65532
+
+ENTRYPOINT ["/bin/agent"]

Makefile

@@ -0,0 +1,22 @@
+# Get the currently used golang install path (in GOPATH/bin, unless GOBIN is set)
+ifeq (,$(shell go env GOBIN))
+GOBIN=$(shell go env GOPATH)/bin
+else
+GOBIN=$(shell go env GOBIN)
+endif
+
+SHELL = /usr/bin/env bash -o pipefail
+.SHELLFLAGS = -ec
+
+.PHONY: all
+all: help
+
+##@ General
+
+.PHONY: help
+help: ## Display this help.
+	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make \033[36m<target>\033[0m\n"} /^[a-zA-Z_0-9-]+:.*?##/ { printf "  \033[36m%-15s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST)
+
+include make/deploy.mk
+include make/dev.mk
+include make/tooling.mk