#!/usr/bin/env bash
set -euo pipefail
export KUBECONFIG=/Users/chrisfu/dev/knoe/knoe-k3s.kubeconfig

kubectl -n gitlab delete daemonset jemalloc-builder --ignore-not-found
sleep 5

kubectl apply -f - <<'DS'
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: jemalloc-builder
  namespace: gitlab
  labels:
    app: jemalloc-builder
spec:
  selector:
    matchLabels:
      app: jemalloc-builder
  template:
    metadata:
      labels:
        app: jemalloc-builder
    spec:
      tolerations:
      - operator: Exists
      initContainers:
      - name: build
        image: ubuntu:22.04
        command:
        - bash
        - -c
        - |
          set -e
          TARGET=/hostlib/libjemalloc.so.2
          if [ -f "$TARGET" ]; then echo "Already built"; exit 0; fi
          apt-get update -qq && apt-get install -y -q gcc make wget bzip2 2>&1
          cd /tmp
          wget -q -O jemalloc.tar.bz2 \
            https://github.com/jemalloc/jemalloc/releases/download/5.3.0/jemalloc-5.3.0.tar.bz2
          tar xjf jemalloc.tar.bz2 && cd jemalloc-5.3.0
          ./configure --with-lg-page=14 --disable-stats --disable-prof --disable-fill 2>&1
          make -j2 lib/libjemalloc.so.2 2>&1
          cp lib/libjemalloc.so.2 "$TARGET" && chmod 755 "$TARGET"
          file "$TARGET" && echo "Done: $(ls -lh $TARGET)"
        volumeMounts:
        - name: hostlib
          mountPath: /hostlib
      containers:
      - name: keepalive
        image: ubuntu:22.04
        command: [bash, -c, "echo 'glibc jemalloc-16k ready'; sleep infinity"]
      volumes:
      - name: hostlib
        hostPath:
          path: /opt/gitlab-jemalloc
          type: DirectoryOrCreate
DS

echo "DaemonSet applied. Waiting 15min for builds to complete..."
sleep 900
kubectl -n gitlab get pods -l app=jemalloc-builder