83 lines
3.9 KiB
Bash
Executable File
83 lines
3.9 KiB
Bash
Executable File
#!/usr/bin/env bash
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# CTAO portal demo — poll the content repo, rebuild, publish atomically.
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# Triggered every 10 s by ctao-portal-build.timer; systemd oneshot semantics
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# guarantee runs never overlap. The 99.9% case is one local curl and exit 0.
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# No secrets anywhere: the portal repo is public-read on the local Gitea.
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set -euo pipefail
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# Defaults match the machine; every var is env-overridable so the whole
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# pipeline can be tested locally against a sandbox dir + local Gitea.
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BASE="${BASE:-$HOME/ctao-portal-demo}"
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GITEA_URL="${GITEA_URL:-http://localhost:3000}" # published by ctao-demo-gitea
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REPO="${REPO:-ctao/portal}" # owner/repo in Gitea
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BRANCH="${BRANCH:-main}"
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BUILD_IMAGE="${BUILD_IMAGE:-localhost/ctao-portal-build:1}"
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# The build joins the Gitea container's network namespace: localhost inside
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# the build = Gitea's loopback (port 3000), host loopback stays unreachable.
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# (A netavark bridge would be equivalent, but rootless bridges need the
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# ip_tables kernel module, absent on the machine — pasta needs nothing.)
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BUILD_NETNS="${BUILD_NETNS:-container:ctao-demo-gitea}"
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REPO_INTERNAL="${REPO_INTERNAL:-http://localhost:3000/$REPO.git}"
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KEEP="${KEEP:-3}" # released builds to retain
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mkdir -p "$BASE/repo" "$BASE/releases" "$BASE/state"
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# --- 1. Cheap poll: branch head via the local Gitea API (host curl + jq) ---
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sha=$(curl -fsS --max-time 5 "$GITEA_URL/api/v1/repos/$REPO/branches/$BRANCH" \
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| jq -r '.commit.id' || true)
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# Gitea down/unreachable is a transient, not a unit failure — exit 0 quietly
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# instead of painting the journal red every 10 s.
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if [[ ! "$sha" =~ ^[0-9a-f]{40}$ ]]; then
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echo "poll failed (gitea unreachable?) — skipping this tick"
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exit 0
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fi
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[[ "$sha" == "$(cat "$BASE/state/last-built" 2>/dev/null)" ]] && exit 0
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echo "building $sha"
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t0=$(date +%s)
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# --- 2. Build in the ephemeral container (git + pinned node live there).
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# SECURITY: the container runs npm lifecycle scripts from the repo, so it is
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# confined to Gitea's netns — it reaches Gitea on localhost:3000 and the
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# internet (for `npm ci` when the lockfile changed), but NOT the host's
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# loopback services (code-server). Never use --network=host here.
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# node_modules and .deps-hash are untracked, so they survive checkouts.
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podman run --rm --network="$BUILD_NETNS" --memory=1g \
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-e ASTRO_TELEMETRY_DISABLED=1 \
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-e SHA="$sha" -e REPO_URL="$REPO_INTERNAL" -e BRANCH="$BRANCH" \
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-v "$BASE/repo:/work/repo:z" \
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-v "$BASE/releases:/work/releases:z" \
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-w /work "$BUILD_IMAGE" sh -ec '
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git config --global safe.directory "*"
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[ -d repo/.git ] || git clone --branch "$BRANCH" "$REPO_URL" repo
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git -C repo remote set-url origin "$REPO_URL" # self-heal if the URL changes
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git -C repo fetch --quiet origin "$BRANCH"
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git -C repo checkout --quiet "$SHA"
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cd repo
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lock=$(sha256sum package-lock.json | cut -d" " -f1)
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if [ ! -d node_modules ] || [ "$lock" != "$(cat .deps-hash 2>/dev/null)" ]; then
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npm ci --no-audit --no-fund
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echo "$lock" > .deps-hash
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fi
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npm run build
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rm -rf "../releases/$SHA"
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cp -a dist "../releases/$SHA"
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'
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# --- 3. Atomic publish: symlink flip via rename(2) — no half-published moment.
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# mv -T is GNU (the target host is Rocky); when testing on macOS put a
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# coreutils `mv` (gmv) first in PATH.
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rm -f "$BASE/releases/".current.* # stale temps from a crash mid-flip
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ln -s "$sha" "$BASE/releases/.current.$$"
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mv -Tf "$BASE/releases/.current.$$" "$BASE/releases/current"
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echo "$sha" > "$BASE/state/last-built"
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# --- 4. Prune old releases (never touches `current` — it is always newest).
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# `|| true`: an empty match must not fail the unit after a successful publish
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# (grep exits 1 under pipefail when there is nothing to prune).
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cd "$BASE/releases"
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ls -1t | grep -vx current | tail -n +"$((KEEP + 1))" | while read -r old; do
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rm -rf -- "$old"
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done || true
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echo "published $sha in $(( $(date +%s) - t0 ))s"
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