import_kubernetes_clusters

#!/bin/bash
# Import kubernetes cluster configuration using gcloud
# Usage: ./import_kubernetes_clusters [ gcp_project [..] ]

set -e
GCLOUD="gcloud"
GCLOUD_CLUSTER_LIST="${GCLOUD} container clusters list"

PROJECTS_LIST=()
if [[ ${#@} -gt 0 ]]
then
  PROJECTS_LIST+=${@}
else
  PROJECTS_LIST+=$(${GCLOUD} projects list --format="value(project_id)")
fi

for PROJECT in ${PROJECTS_LIST}
do

set +e
read -r -d '' VAR << EOM
{
  "classes": [ "kapitan.templates.kubernetes" ],
  "parameters": {
    "google_project": "${PROJECT}",
    "cluster": "\${\(.name)}",
    (.name) : {
      "name": .name,
      "google_project": "${PROJECT}",
      "zone": .zone,
      "type": "gke",
      "cluster": .name,
      "id": "gke_${PROJECT}_\(.zone)_\(.name)",
      "user": "gke_${PROJECT}_\(.zone)_\(.name)",
    }
  }
}
EOM

echo "Processing project ${PROJECT}"
  for CLUSTER in $(${GCLOUD_CLUSTER_LIST} --project ${PROJECT} --format="value(name)")
  do
    echo "....discovered Kubernetes cluster $CLUSTER on project $PROJECT"
    CLUSTER_DIR="$(dirname $0)/../inventory/classes/projects/$PROJECT/kubernetes"
    CLUSTER_FILE="${CLUSTER_DIR}/${CLUSTER}.yml"
    mkdir -p ${CLUSTER_DIR}
    $GCLOUD_CLUSTER_LIST --project $PROJECT --format json --filter="name=$CLUSTER" | \
      yq -r ".[] | $VAR" --yaml-output > ${CLUSTER_FILE}
  done
done