Create a .yaml file with kubeflow version

components/notebook-controller/config/component_metadata.yaml

@@ -0,0 +1,4 @@
+releases: 
+  - name: Kubeflow Notebook
+    version: 1.9.0 
+    repoUrl: https://github.com/kubeflow/kubeflow

components/notebook-controller/generate-metadata-yaml.sh

@@ -0,0 +1,165 @@
+#!/usr/bin/env bash
+
+set -uo pipefail
+
+function trap_exit() {
+	rc=$?
+
+	set +x
+
+	exit $rc
+}
+
+trap "trap_exit" EXIT
+
+_derive_metadata()
+{
+  # inspired from https://stackoverflow.com/a/29835459
+  current_dir=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
+
+  kf_project_file="${current_dir}/PROJECT"
+  if [ -e "${kf_project_file}" ]; then
+
+    if [ -z "${metadata_repo_url}" ]; then
+      project_repo_reference=$(yq -e '.repo' "${kf_project_file}")
+      project_repo_parts=( $(printf "%s" ${project_repo_reference##https://} | tr '/' ' ') )
+      github_host="${project_repo_parts[0]}"
+      github_owner="${project_repo_parts[1]}"
+      github_repo="${project_repo_parts[2]}"
+
+      metadata_repo_url=$(printf "https://%s/%s/%s" "${github_host}" "${github_owner}" "${github_repo}")
+    fi
+
+    if [ -z "${metadata_name}" ]; then
+      project_domain=$(yq -e '.domain' "${kf_project_file}")
+      project_name=$(yq -e '.projectName' "${kf_project_file}")
+      metadata_name="${project_domain} ${project_name}"
+    fi
+
+  fi
+
+  if [ -z "${metadata_version}" ]; then
+    repo_root=$(git rev-parse --show-toplevel)
+    version_file="${repo_root}/releasing/version/VERSION"
+
+    metadata_version=$(cat "${version_file}" | head -n 1)
+  fi
+}
+
+_fallback_to_existing_values()
+{
+  if [ -n "${existing_fallback}" ]; then
+    if [ -z "${metadata_repo_url}" ]; then
+      metadata_repo_url=$(yq -e '.releases[0].repoUrl' "${output_file}")
+    fi
+
+    if [ -z "${metadata_version}" ]; then
+      metadata_version=$(yq -e '.releases[0].version' "${output_file}")
+    fi
+
+    if [ -z "${metadata_name}" ]; then
+      metadata_name=$(yq -e '.releases[0].name' "${output_file}")
+    fi
+  fi
+}
+
+_check_for_missing_data()
+{
+  missing_data=
+
+  if [ -z "${metadata_repo_url}" ]; then
+    printf "%s\n" "repoUrl attribute not specified and unable to be inferred"
+    missing_data=1
+  fi
+
+  if [ -z "${metadata_version}" ]; then
+    printf "%s\n" "version attribute not specified and unable to be inferred"
+    missing_data=1
+  fi
+
+  if [ -z "${metadata_name}" ]; then
+    printf "%s\n" "name attribute not specified and unable to be inferred"
+    missing_data=1
+  fi
+
+  if [ -n "${missing_data}" ]; then
+    exit 1
+  fi
+}
+
+_handle_metadata_file()
+{
+
+  _derive_metadata
+
+  _fallback_to_existing_values
+
+  _check_for_missing_data
+
+  # NOTE: Does not handle multiple entries!!
+  yq_env_arg="${metadata_name}" yq -i '.releases[0].name = strenv(yq_env_arg)' "${output_file}"
+  yq_env_arg="${metadata_version}" yq -i '.releases[0].version = strenv(yq_env_arg)' "${output_file}"
+  yq_env_arg="${metadata_repo_url}" yq -i '.releases[0].repoUrl = strenv(yq_env_arg)' "${output_file}"
+}
+
+_usage()
+{
+	printf "%s\n" "Usage: $(basename $0) -o <output file> [-n <name>] [-v <version>] [-r <repoUrl>] [-p] [-x] [-h]"
+}
+
+_parse_opts()
+{
+	local OPTIND
+
+	while getopts ':o:n:v:r:exh' OPTION; do
+		case "${OPTION}" in
+			o )
+				output_file="${OPTARG}"
+
+        if ! [ -e "${output_file}" ]; then
+          touch "${output_file}"
+        fi
+				;;
+			n )
+				metadata_name="${OPTARG}"
+				;;
+			v )
+				metadata_version="${OPTARG}"
+				;;
+			r )
+				metadata_repo_url="${OPTARG}"
+				;;
+			e )
+				existing_fallback="t"
+				;;
+			h)
+				_usage
+				exit
+				;;
+			* )
+				_usage
+				exit 1
+				;;
+		esac
+	done
+}
+
+output_file=
+metadata_repo_url=
+metadata_version=
+metadata_name=
+existing_fallback=
+
+if ! yq --version &> /dev/null; then
+  printf "%s" "yq not installed... aborting script."
+  exit 1
+fi
+
+_parse_opts "$@"
+
+if [ -z "${output_file}" ]; then
+  printf "%s" "-o <output file> argument is required"
+  exit 1
+fi
+
+_handle_metadata_file