2025-12-24 07:36:36 +00:00
2 changed files with 125 additions and 0 deletions
@@ -0,0 +1,12 @@
+name: Build Coredns with netboxdns plugin
+on: [workflow_dispatch]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v5
+
+      - name: Build
+        run: ./ci/build.sh 
@@ -0,0 +1,113 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Inputs expected from the workflow:
+#   GITHUB_REPOSITORY  - owner/repo of the current action repo (provided by Actions)
+#   GITHUB_SHA         - commit to clone/check out (provided by Actions, optional)
+#   GO_VERSION         - optional, e.g. "1.23.3"; if unset, script will query latest.
+
+main() {
+  # 1. Create temp directory
+  TMPDIR="$(mktemp -d)"
+  echo "Using temp dir: ${TMPDIR}"
+
+  # 2. Clone latest CoreDNS release
+  cd "${TMPDIR}"
+  COREDNS_REPO_URL="https://github.com/coredns/coredns.git"
+  COREDNS_DIR="${TMPDIR}/coredns"
+
+  # get latest tag (annotated or lightweight)
+  git clone --depth=1 --filter=blob:none --tags "${COREDNS_REPO_URL}" "${COREDNS_DIR}"
+  cd "${COREDNS_DIR}"
+  LATEST_TAG="$(git describe --tags "$(git rev-list --tags --max-count=1)")"
+  git fetch --tags --depth=1 origin "${LATEST_TAG}"
+  git checkout "${LATEST_TAG}"
+
+  # 3. Clone the GitHub Action's repo (this repo)
+  ACTION_REPO_DIR="${TMPDIR}/action-repo"
+  git clone "https://github.com/${GITHUB_REPOSITORY}.git" "${ACTION_REPO_DIR}"
+  if [ -n "${GITHUB_SHA:-}" ]; then
+    cd "${ACTION_REPO_DIR}"
+    git checkout "${GITHUB_SHA}"
+  fi
+
+  # 4. cd into the CoreDNS repo
+  cd "${COREDNS_DIR}"
+
+  # 5. Update plugin.cfg to include netboxdns plugin
+  #    Insert netboxdns after the 'cache' plugin entry as recommended. [web:16][web:29]
+  if ! grep -q '^netboxdns:' plugin.cfg; then
+    awk '
+      /^cache:/ {
+        print
+        print "netboxdns:github.com/doubleu-labs/coredns-netbox-plugin-dns"
+        next
+      }
+      { print }
+    ' plugin.cfg >plugin.cfg.new
+    mv plugin.cfg.new plugin.cfg
+  fi
+
+  # 6. Regenerate plugin source files
+  #    CoreDNS uses go generate (via Makefile) to rebuild plugin glue code. [web:20][web:26]
+  make gen || go generate ./...
+
+  # 7. go mod replace plugin path to the cloned action repo
+  #    This assumes the plugin lives at github.com/doubleu-labs/coredns-netbox-plugin-dns in your repo. [web:16][web:23]
+  #    Adjust relative path if your repo layout differs.
+  go mod edit -replace=github.com/doubleu-labs/coredns-netbox-plugin-dns="${ACTION_REPO_DIR}"
+
+  # 8. Update Go version to the latest
+  #    Install or pick latest Go and set GOTOOLCHAIN, or rely on pre-installed toolchain in the runner. [web:17]
+  #    Here we query the latest stable from golang.org and export it for this build.
+  if [ -z "${GO_VERSION:-}" ]; then
+    GO_VERSION="$(curl -s https://go.dev/VERSION?m=text | head -n1 | sed 's/^go//')" # e.g. "1.23.3"
+  fi
+
+  echo "Using Go version: ${GO_VERSION}"
+
+  # If you use setup-go in the workflow, this is optional; otherwise install here.
+  # Example (Debian-based runner):
+  # sudo rm -rf /usr/local/go
+  # curl -sL "https://go.dev/dl/go${GO_VERSION}.linux-amd64.tar.gz" | sudo tar -C /usr/local -xz
+  # export PATH="/usr/local/go/bin:${PATH}"
+
+  export GOTOOLCHAIN="go${GO_VERSION}"
+
+  # 9. Compile CoreDNS
+  make coredns || make
+
+  # 10. Strip the binary
+  STRIP_BIN="${STRIP_BIN:-strip}"
+  "${STRIP_BIN}" ./coredns
+
+  # 11. Create a .deb installing /usr/local/bin/coredns
+  #     Minimal Debian package using dpkg-deb. [web:17]
+  PKG_ROOT="${TMPDIR}/pkg-root"
+  mkdir -p "${PKG_ROOT}/DEBIAN" "${PKG_ROOT}/usr/local/bin"
+
+  # Basic metadata; tweak as needed
+  PKG_NAME="coredns-netboxdns"
+  PKG_VERSION="$(echo "${LATEST_TAG}" | sed 's/^v//')"
+  PKG_ARCH="$(dpkg --print-architecture 2>/dev/null || echo amd64)"
+
+  cat >"${PKG_ROOT}/DEBIAN/control" <<EOF
+Package: ${PKG_NAME}
+Version: ${PKG_VERSION}
+Section: net
+Priority: optional
+Architecture: ${PKG_ARCH}
+Maintainer: CI <ci@example.invalid>
+Description: CoreDNS with netboxdns plugin
+ Custom CoreDNS build with netboxdns plugin compiled in.
+EOF
+
+  install -m 0755 ./coredns "${PKG_ROOT}/usr/local/bin/coredns"
+
+  DEB_OUT="${TMPDIR}/${PKG_NAME}_${PKG_VERSION}_${PKG_ARCH}.deb"
+  dpkg-deb --build "${PKG_ROOT}" "${DEB_OUT}"
+
+  echo "Built Debian package at: ${DEB_OUT}"
+}
+
+main "$@"