ocpkg.sh

#!/bin/bash
set -o pipefail



# Simple Script that will display RHCOS rpms and kernel versions based on OCP version


# USAGE:
#   ./ocpkg 4.8.34
#   ./ocpkg 4.8    # (latest Y release will be chosen)

DEPENDENCIES=("oc" "jq")

IFS=. read -r Ver4 VerX VerY <<< "${1:-}"
STREAM="fast"
CHANNEL="${STREAM}-4.${VerX}"

# URLs
UPGRADE_API_URL="https://api.openshift.com/api/upgrades_info/v1/graph?channel=${CHANNEL}&arch=amd64"
RHCOS_RELEASE_URL="https://releases-rhcos--prod-pipeline.apps.int.prod-stable-spoke1-dc-iad2.itup.redhat.com"

# ---------------- FUNCTIONS ---------------- #

_check_dependencies () {
  local dep="$1"
  if ! command -v "$dep" >/dev/null 2>&1; then
    echo "Error: $dep is not installed." >&2
    exit 1
  fi
}

_set_latest_version () {
  version=$(curl -skH 'Accept: application/json' "$UPGRADE_API_URL" \
    | jq -rS '
        .nodes
        | sort_by(.version | gsub("[a-z,A-Z,-]";"") | split(".") | map(tonumber))
        | last
        | .version
      ')
}

_main () {
  export VERSION="${version}"

  RELEASE_IMAGE=$(curl -skH 'Accept: application/json' "$UPGRADE_API_URL" \
    | jq -r --arg VERSION "$VERSION" -S '
        .nodes
        | sort_by(.version | gsub("[a-z,A-Z,-]";"") | split(".") | map(tonumber))
        | .[] | select(.version == $VERSION)
        | .payload
      ')

  RHCOS_VERSION=$(oc adm release info "$RELEASE_IMAGE" -o json 2>/dev/null \
    | jq -r '.displayVersions."machine-os".Version')

  KUBE_VERSION=$(oc adm release info "$RELEASE_IMAGE" -o json 2>/dev/null \
    | jq -r '.displayVersions.kubernetes.Version')

  # Base path for commitmeta.json
  case $VerX in
    ''|*[!0-9]*) 
      echo "Error: VerX must be a number" >&2
      exit 1
      ;;
    [0-9]|1[0-2])  # 0–9 and 10–12
      RHCOS_META_URL="${RHCOS_RELEASE_URL}/storage/prod/streams/4.${VerX}/builds/${RHCOS_VERSION}/x86_64/commitmeta.json"
      ;;
    1[3-5])  # 13–15
      RHCOS_META_URL="${RHCOS_RELEASE_URL}/storage/prod/streams/4.${VerX}-9.2/builds/${RHCOS_VERSION}/x86_64/commitmeta.json"
      RHCOS_IMAGE=$(oc adm release info "$VERSION" --image-for=rhel-coreos 2>/dev/null)
      ;;
    *)  # 16+
      RHCOS_META_URL="${RHCOS_RELEASE_URL}/storage/prod/streams/4.${VerX}-9.4/builds/${RHCOS_VERSION}/x86_64/commitmeta.json"
      RHCOS_IMAGE=$(oc adm release info "$VERSION" --image-for=rhel-coreos 2>/dev/null)
      ;;
  esac
  
  PACKAGES=$(curl -skS "$RHCOS_META_URL" \
    | jq -r '."rpmostree.rpmdb.pkglist"| .[] | @csv' \
    | awk -F ',' '{print $1,$3,$4,$5}' \
    | tr -d '",')

  KERNEL_VERSION=$(awk '/kernel /' <<< "$PACKAGES")

  # ---------------- OUTPUT ---------------- #
  echo -e "Package List\n\n${PACKAGES}\n"
  echo -e "OpenShift Version:  ${VERSION}"
  echo -e "Kubernetes Version: ${KUBE_VERSION}"
  echo -e "RHCOS Version:      rhcos-4.${VerX} ${RHCOS_VERSION}"
  echo -e "Kernel Version:     ${KERNEL_VERSION}"
  echo -e "Release Image:      ${RELEASE_IMAGE}"
  echo -e "\nView list here: ${RHCOS_META_URL}"
}

# ---------------- MAIN ---------------- #

for dep in "${DEPENDENCIES[@]}"; do
  _check_dependencies "$dep"
done

if [ -z "${VerY:-}" ]; then
  _set_latest_version
else
  version="4.${VerX}.${VerY}"
fi

_main