create_secret_with_rotation.py

#!/usr/bin/env python

# 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.

# [START secretmanager_create_secret_with_rotation]
from datetime import datetime, timedelta
from google.cloud import secretmanager
from google.protobuf import duration_pb2
from google.protobuf import timestamp_pb2


def create_secret_with_rotation(
    project_id: str, secret_id: str, topic_name: str
) -> None:
    """
    Creates a new secret with rotation configured.

    Args:
        project_id (str): ID of the Google Cloud project
        secret_id (str): ID of the secret to create
        topic_name (str): Resource name of the Pub/Sub topic for rotation notifications
    Example:
        # Create a secret with automatic rotation every 30 days
        create_secret_with_rotation(
            "my-project",
            "my-rotating-secret",
            "projects/my-project/topics/my-rotation-topic"
        )
    """
    rotation_period_hours = 24
    # Create the Secret Manager client
    client = secretmanager.SecretManagerServiceClient()

    # Build the resource name of the parent project
    parent = f"projects/{project_id}"

    # Convert rotation period to protobuf Duration
    rotation_period = duration_pb2.Duration()
    rotation_period.seconds = (
        rotation_period_hours * 3600
    )  # Convert hours to seconds

    # Set next rotation time to 24 hours from now
    next_rotation_time = timestamp_pb2.Timestamp()
    next_rotation_time.FromDatetime(datetime.now() + timedelta(hours=24))

    # Create the secret with rotation configuration
    secret = client.create_secret(
        request={
            "parent": parent,
            "secret_id": secret_id,
            "secret": {
                "replication": {"automatic": {}},
                "topics": [{"name": topic_name}],
                "rotation": {
                    "next_rotation_time": next_rotation_time,
                    "rotation_period": rotation_period,
                },
            },
        }
    )

    print(
        f"Created secret {secret.name} with rotation period {rotation_period_hours} hours and topic {topic_name}"
    )


# [END secretmanager_create_secret_with_rotation]


if __name__ == "__main__":
    import argparse

    parser = argparse.ArgumentParser(
        description=__doc__,
        formatter_class=argparse.RawDescriptionHelpFormatter,
    )
    parser.add_argument("project_id", help="ID of the GCP project")
    parser.add_argument("secret_id", help="ID of the secret to create")
    parser.add_argument(
        "topic_name",
        help="Resource name of the Pub/Sub topic for rotation notifications",
    )
    args = parser.parse_args()

    create_secret_with_rotation(
        args.project_id,
        args.secret_id,
        args.topic_name,
    )