generated from mathias/template-go-web
Initial commit
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name: CD
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on:
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push:
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branches: [main]
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tags: ["v*"]
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pull_request:
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branches: [main]
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env:
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IMAGE: __PROJECT_NAME__
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jobs:
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guard:
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name: Detect unsubstituted template
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runs-on: self-hosted
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outputs:
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is_template: ${{ steps.detect.outputs.is_template }}
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steps:
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- uses: actions/checkout@v4
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- id: detect
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# The detection lives in scripts/is-template.sh so it can be TESTED.
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# It was inline here twice and wrong both times (#9, #10): the grep
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# named a placeholder literally, and the scaffolder substitutes every
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# file including this one, so in a generated repo the guard matched
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# forever and check/build/deploy all skipped while the run went green.
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#
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# An inline shell block in a workflow cannot be run by a test, which is
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# why the second fix repeated the first bug under a comment warning
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# about it. scripts/tests/is-template_test.sh now substitutes the guard
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# and asserts it still answers correctly.
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run: |
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echo "is_template=$(bash scripts/is-template.sh go.mod)" >> "$GITHUB_OUTPUT"
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check:
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name: Lint / Test / Vet
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# Deliberately NOT gated on the guard (#12). build and deploy are, because
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# they genuinely cannot work here -- placeholder module path, no image name,
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# no namespace. But linting and testing the template is meaningful, and
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# gating it meant this repo had no working gate at all: #8 sat here with CI
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# green throughout, and was found by a child rather than by us.
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#
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# `task check` includes scripts/tests/generated-child_test.sh, which covers
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# the entrypoint that ./... cannot see -- ungating without that would run a
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# gate that still skips the package every child is built around.
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needs: guard
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runs-on: self-hosted
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steps:
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- uses: actions/checkout@v4
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- uses: actions/setup-go@v5
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with:
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go-version-file: go.mod
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cache: false
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- name: Install toolchain
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run: |
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go version
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# Pin the GENERATOR to the same version as the templ LIBRARY in
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# go.mod. Installing @latest let them drift: the generator emitted
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# calls (templruntime.WriteString) that the pinned library did not
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# have, which is template-go-web#8. Nothing caught it because the
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# guard skipped `check` in this repo entirely (#12).
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templ_version="$(go list -m -f '{{.Version}}' github.com/a-h/templ)"
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echo "templ library is $templ_version — installing the matching generator"
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go install "github.com/a-h/templ/cmd/templ@$templ_version"
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curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/HEAD/install.sh \
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| sh -s -- -b "$(go env GOPATH)/bin" v2.11.4
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- name: Run checks
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run: task check
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build:
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name: Build & Import
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needs: [guard, check]
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if: needs.guard.outputs.is_template != 'true' && github.event_name != 'pull_request'
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runs-on: self-hosted
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outputs:
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image-tag: ${{ steps.meta.outputs.sha-tag }}
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steps:
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- uses: actions/checkout@v4
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- name: Derive image tags
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id: meta
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run: |
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SHA=$(git rev-parse --short HEAD)
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echo "sha-tag=${SHA}" >> "$GITHUB_OUTPUT"
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# infra#309: the implementation lives in .gitea/build-image.sh, a
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# byte-identical copy of mathias/infra's ci-templates/build-image.sh.
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# Do not edit it here -- edit the canonical file, run `task ci:sync`,
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# and infra's drift gate will name any repo still carrying an old copy.
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#
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# This matters more in a template than anywhere else: every repo
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# generated from here inherits its CI, so a template that carries the
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# build LOGIC manufactures a new copy of every bug in it. That is
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# precisely how rootless buildah (infra#241) reached a dozen repos, and
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# why the fix then had to be rediscovered here weeks later. A template
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# that carries a CALL manufactures nothing.
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#
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# NEW REPOS: add yourself to mathias/infra's ci-templates/adopters.txt so
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# the gate keeps this copy current. Until you do, the copy is unmanaged
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# and will silently fall behind.
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#
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# `bash <script>` rather than executing it directly: files written via
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# the Gitea API land 0644, and CI that depends on a file mode is a trap.
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- name: Build and push to local registry
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env:
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SHA_TAG: ${{ steps.meta.outputs.sha-tag }}
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GIT_SHA: ${{ github.sha }}
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run: bash .gitea/build-image.sh
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deploy:
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name: Deploy via GitOps
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needs: [guard, build]
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if: needs.guard.outputs.is_template != 'true' && github.ref == 'refs/heads/main' && github.event_name == 'push'
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runs-on: self-hosted
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steps:
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- name: Update image tag in infra repo
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env:
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IMAGE_TAG: ${{ needs.build.outputs.image-tag }}
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DEPLOY_KEY: ${{ secrets.INFRA_DEPLOY_KEY }}
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run: |
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set -euo pipefail
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# infra#311: fail on an empty tag BEFORE patching anything. The
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# grep verification further down CANNOT catch it -- with IMAGE_TAG
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# empty its pattern matches the very corruption it exists to reject.
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# The result is `image: <repo>:` in the manifest, which is invalid
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# YAML, so Flux fails the ENTIRE apps Kustomization and every app
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# stops reconciling, not just this one. That happened on 2026-08-25.
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[ -n "${IMAGE_TAG:-}" ] || { echo "IMAGE_TAG is empty - refusing to patch"; exit 1; }
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mkdir -p ~/.ssh
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echo "$DEPLOY_KEY" > ~/.ssh/id_infra
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chmod 600 ~/.ssh/id_infra
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ssh-keyscan -p 30022 10.0.1.20 >> ~/.ssh/known_hosts 2>/dev/null
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export GIT_SSH_COMMAND="ssh -i ~/.ssh/id_infra -o IdentitiesOnly=yes"
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rm -rf /tmp/infra
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git clone -b main ssh://git@10.0.1.20:30022/mathias/infra.git /tmp/infra
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cd /tmp/infra
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DEPLOYMENT="k3s/apps/__PROJECT_NAME__/deployment.yaml"
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sed -i "s|image: localhost:5000/__PROJECT_NAME__:.*|image: localhost:5000/__PROJECT_NAME__:${IMAGE_TAG}|" "$DEPLOYMENT"
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grep -q "localhost:5000/__PROJECT_NAME__:${IMAGE_TAG}" "$DEPLOYMENT" \
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|| { echo "✗ image tag patch failed"; exit 1; }
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if git diff --quiet "$DEPLOYMENT"; then
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echo "ℹ image tag unchanged — skipping push"
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else
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git -c user.name="__PROJECT_NAME__ CI" \
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-c user.email="ci@__PROJECT_NAME__.local" \
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commit -m "chore(deploy): __PROJECT_NAME__ → ${IMAGE_TAG}" "$DEPLOYMENT"
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git push origin main
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echo "✓ pushed to infra repo"
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fi
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shred -u ~/.ssh/id_infra
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- name: Trigger Flux reconcile
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run: |
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kubectl -n flux-system annotate gitrepository flux-system \
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reconcile.fluxcd.io/requestedAt="$(date +%s)" --overwrite
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kubectl -n flux-system annotate kustomization apps \
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reconcile.fluxcd.io/requestedAt="$(date +%s)" --overwrite
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- name: Verify rollout
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run: |
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kubectl rollout status deployment/__PROJECT_NAME__ \
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--namespace __PROJECT_NAME__ \
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--timeout=120s \
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|| {
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kubectl get pods -n __PROJECT_NAME__ -o wide
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kubectl get events -n __PROJECT_NAME__ --sort-by='.lastTimestamp' | tail -20
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exit 1
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}
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