prowjob,env: add script to extract env vars from job

Signed-off-by: Daniel Hiller <[email protected]>

hack/export-job-env-vars.sh

@@ -0,0 +1,72 @@
+#!/usr/bin/env bash
+#
+# This file is part of the KubeVirt project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# Copyright the KubeVirt Authors.
+#
+#
+
+BASEDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
+PROJECT_INFRA_ROOT=$(readlink --canonicalize ${BASEDIR}/..)
+
+function main() {
+    if [ "$#" -eq 0 ]; then
+        usage
+        exit 1
+    fi
+
+    if [[ "$1" =~ -h ]]; then
+        usage
+        exit 0
+    fi
+
+    echo "$(extract_env_vars_to_export "$1" "$2")"
+}
+
+function extract_env_vars_to_export() {
+    if [ -z "$1" ]; then
+        usage
+        exit 1
+    fi
+
+    job_type="${2:-periodics}"
+
+    rg -l "$1" "${PROJECT_INFRA_ROOT}/github/ci/prow-deploy/files/jobs" | \
+        xargs yq -r '.'"${job_type}"'[] | select(.name=="'"$1"'") | .spec.containers[0].env[] | "export "+.name+"="+.value+ " &&"' | \
+        tr '\n' ' ' | \
+        sed 's/\s&&\s*$//'
+}
+
+function usage() {
+    cat << EOF
+usage:
+    $0 -h|--help
+    $0 <job_name> [job-type(default: periodics)]
+
+    Transforms the env var section of a prow job into a set of export commands and prints them out.
+
+    Can then be used as input for eval like this:
+
+    eval "\$(./hack/export-job-env-vars.sh periodic-kubevirt-e2e-k8s-1.31-sig-storage-root)"
+
+    for presubmits
+
+    ./hack/export-job-env-vars.sh pull-kubevirt-e2e-k8s-1.31-sig-compute 'presubmits."kubevirt/kubevirt"'
+
+    Note: Requires ripgrep/rg to work.
+EOF
+}
+
+main "$@"