53 lines
3.5 KiB
Bash
Executable file
53 lines
3.5 KiB
Bash
Executable file
#!/bin/bash
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# build-cdn.sh — one public build of the PRODUCTION branch into /data/cdn, one at a time.
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# main is the shared sandbox the dev server follows; the public build comes only from
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# PRODUCTION_BRANCH (default production), which moves when someone promotes main to it.
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# fetch that branch into its own ref -> snapshot it -> apply ITS public exclusions ->
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# the build steps WITHOUT the gates (memory-capped) -> check the output -> the exclusion check again
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# (refuses the swap) -> atomic swap of /data/cdn/current.
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# No gates here: they already passed before the commit reached main, and a full gate run on a
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# 2-vCPU container takes most of an hour. The public exclusions are NOT a gate and always run.
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# Exit 75 = another build holds the lock. To stop a build, kill the PID in /tmp/build-cdn.pid
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# (never a process group: inside a container the group can be PID 1, i.e. the whole container).
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set -u
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exec 9>/tmp/build-cdn.lock
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flock -n 9 || { echo "another build is running"; exit 75; }
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echo $$ > /tmp/build-cdn.pid
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cd /app/repo
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PB="${PRODUCTION_BRANCH:-production}"
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# Its own ref, and no FETCH_HEAD: the dev server's pull loop uses FETCH_HEAD for main at the same time.
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git fetch -q --no-write-fetch-head --depth 1 origin "+refs/heads/$PB:refs/cdn/$PB" \
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|| { echo "cannot fetch branch '$PB' (create it with: git push origin main:$PB)"; exit 1; }
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SHA=$(git rev-parse --short "refs/cdn/$PB"); SNAP=/tmp/build-$SHA
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rm -rf "$SNAP"; mkdir -p "$SNAP"
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git archive "refs/cdn/$PB" | tar -x -C "$SNAP" || { echo "snapshot failed"; exit 1; }
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# The exclusion list and checker come from the branch being published, so loosening them takes a
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# promotion too (falls back to the dev server's copy for a branch older than the list).
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SRC="$SNAP/deployment/cloud"; [ -f "$SRC/apply-exclusions.sh" ] && [ -f "$SRC/public-exclusions.txt" ] || SRC=/app/repo/deployment/cloud
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EXDIR=/tmp/exclusions-$SHA; rm -rf "$EXDIR"; mkdir -p "$EXDIR"
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cp "$SRC/apply-exclusions.sh" "$SRC/public-exclusions.txt" "$EXDIR/" # the script reads the list beside it
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bash "$EXDIR/apply-exclusions.sh" "$SNAP"
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# Dependencies: reuse the dev server's install when the lockfile is the same, else install for this commit.
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if cmp -s "$SNAP/bun.lock" /app/repo/bun.lock; then
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ln -s /app/repo/node_modules "$SNAP/node_modules"
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else
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echo "$(date -u +%FT%TZ) $PB's lockfile differs from main's: installing its dependencies"
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(cd "$SNAP" && bun install --frozen-lockfile >/dev/null) || { echo "dependency install failed"; rm -rf "$SNAP"; exit 1; }
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fi
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cd "$SNAP"
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echo "$(date -u +%FT%TZ) building $SHA"
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export NODE_OPTIONS="--max-old-space-size=${BUILD_MAX_OLD_SPACE_MB:-1536}"
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for step in clean token build:bundles tree check:sri; do
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nice -n 10 bun run "$step" || { echo "build failed at $step"; rm -rf "$SNAP"; exit 1; }
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done
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OUT="$SNAP/public/dx-maps"
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[ -f "$OUT/manifest.json" ] || { echo "no manifest.json in the output"; rm -rf "$SNAP"; exit 1; }
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bun -e 'console.log("window.MAP_API_BASE=" + JSON.stringify(process.env.PUBLIC_API_BASE || "") + ";")' > "$OUT/runtime-config.js"
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NEW=/data/cdn/build-$SHA
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rm -rf "$NEW"; mkdir -p /data/cdn; mv "$SNAP/public" "$NEW"
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bash "$EXDIR/apply-exclusions.sh" --check "$NEW" || { echo "REFUSED: excluded content in the build; not published"; rm -rf "$NEW" "$SNAP" "$EXDIR"; exit 1; }
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ln -sfn "$NEW" /data/cdn/current.tmp && mv -T /data/cdn/current.tmp /data/cdn/current
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echo "$SHA" > /data/cdn/COMMIT
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find /data/cdn -maxdepth 1 -name 'build-*' ! -path "$NEW" -exec rm -rf {} +
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rm -rf "$SNAP" "$EXDIR"
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echo "$(date -u +%FT%TZ) published $SHA ($PB) at /cdn/dx-maps/"
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