chore(jdbc): add nightly JAR build

.cloudbuild/jdbc_nightly.yaml

@@ -35,6 +35,11 @@ steps:
   args: ['.kokoro/build.sh']
   env:
   - 'JOB_TYPE=jdbc-nightly-integration'
+- name: 'gcr.io/cloud-devrel-public-resources/java11'
+  id: "Nightly build"
+  timeout: 10000s
+  entrypoint: 'bash'
+  args: ['.kokoro/jdbc-release.sh']
 
 availableSecrets:
   secretManager:

.kokoro/jdbc-release.sh

@@ -0,0 +1,56 @@
+#!/bin/bash
+# Copyright 2026 Google LLC
+#
+# 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.
+
+set -euo pipefail
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+cd "${DIR}/../google-cloud-bigquery-jdbc"
+
+FOLDER=release
+DATE=$(date '+%Y-%m-%d')
+COMMIT=$(git rev-parse --short HEAD)
+VERSION=$(mvn help:evaluate -Dexpression=project.version -q -DforceStdout)
+BUCKET=gs://bq_devtools_release_private/drivers/jdbc
+NIGHTLY_BUILD_DESTINATION="${BUCKET}/nightly/${VERSION}/${DATE}"
+
+# All dependencies release
+mkdir -p "./${FOLDER}"
+make docker-package-all-dependencies PACKAGE_DESTINATION="$(pwd)/${FOLDER}"
+JAR_FILE=$(find . -wholename "./${FOLDER}/*jar" -print -quit)
+JAR_NAME=$(basename "${JAR_FILE}" .jar)-${DATE}-${COMMIT}
+
+gsutil cp "${JAR_FILE}" "${NIGHTLY_BUILD_DESTINATION}/${JAR_NAME}.jar"
+rm -rf "${FOLDER}"
+
+# All dependencies release - shaded
+mkdir -p "./${FOLDER}"
+make docker-package-all-dependencies-shaded PACKAGE_DESTINATION="$(pwd)/${FOLDER}"
+JAR_FILE=$(find . -wholename "./${FOLDER}/*jar" -print -quit)
+
+gsutil cp "${JAR_FILE}" "${NIGHTLY_BUILD_DESTINATION}/${JAR_NAME}-shaded.jar"
+rm -rf "${FOLDER}"
+
+# Thin release
+mkdir -p "./${FOLDER}"
+make docker-package PACKAGE_DESTINATION="$(pwd)/${FOLDER}"
+ZIP_FILE=$(find . -wholename "./${FOLDER}/*zip" -print -quit)
+
+gsutil cp "${ZIP_FILE}" "${NIGHTLY_BUILD_DESTINATION}/${JAR_NAME}.zip"
+rm -rf "${FOLDER}"
+
+# Update latest version
+gsutil cp "${NIGHTLY_BUILD_DESTINATION}/${JAR_NAME}.zip" "${BUCKET}/google-cloud-bigquery-jdbc-latest.zip"
+gsutil cp "${NIGHTLY_BUILD_DESTINATION}/${JAR_NAME}.jar" "${BUCKET}/google-cloud-bigquery-jdbc-latest-full.jar"
+gsutil cp "${NIGHTLY_BUILD_DESTINATION}/${JAR_NAME}-shaded.jar" "${BUCKET}/google-cloud-bigquery-jdbc-latest-full-shaded.jar"