#!/usr/bin/env bash
MODULE_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
OUT="$MODULE_DIR/docs/output"
NS=demo
IMAGE="${IMAGE:-sbd/k8s-demo:1}"
mkdir -p "$OUT"
export KUBECONFIG="${KUBECONFIG:-/etc/rancher/k3s/k3s.yaml}"
# Run a one-off pod from the app image with an arbitrary command and resources; print its logs.
#   oneoff <name> '<resources-json>' <command...>
oneoff() {
  local name="$1" resources="$2"; shift 2
  local cmd; cmd=$(printf '"%s",' "$@"); cmd="[${cmd%,}]"
  kubectl -n "$NS" delete pod "$name" --ignore-not-found --wait=true > /dev/null
  kubectl -n "$NS" apply -f - > /dev/null <<YAML
apiVersion: v1
kind: Pod
metadata: {name: $name, namespace: $NS, labels: {role: oneoff}}
spec:
  restartPolicy: Never
  containers:
    - name: app
      image: $IMAGE
      imagePullPolicy: Never
      command: $cmd
      resources: $resources
YAML
  kubectl -n "$NS" wait --for=jsonpath='{.status.phase}'=Succeeded "pod/$name" --timeout=120s > /dev/null
  kubectl -n "$NS" logs "$name"
  kubectl -n "$NS" delete pod "$name" --wait=false > /dev/null
}