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#!/usr/bin/env python
# Copyright 2016 Google Inc. All Rights Reserved.
#
# 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.
import argparse
from google.cloud import logging
# [START logging_list_sinks]
def list_sinks():
"""Lists all sinks."""
logging_client = logging.Client()
sinks = list(logging_client.list_sinks())
if not sinks:
print('No sinks.')
for sink in sinks:
print('{}: {} -> {}'.format(sink.name, sink.filter_, sink.destination))
# [END logging_list_sinks]
# [START logging_create_sink]
def create_sink(sink_name, destination_bucket, filter_):
"""Creates a sink to export logs to the given Cloud Storage bucket.
The filter determines which logs this sink matches and will be exported
to the destination. For example a filter of 'severity>=INFO' will send
all logs that have a severity of INFO or greater to the destination.
See https://cloud.google.com/logging/docs/view/advanced_filters for more
filter information.
"""
logging_client = logging.Client()
# The destination can be a Cloud Storage bucket, a Cloud Pub/Sub topic,
# or a BigQuery dataset. In this case, it is a Cloud Storage Bucket.
# See https://cloud.google.com/logging/docs/api/tasks/exporting-logs for
# information on the destination format.
destination = 'storage.googleapis.com/{bucket}'.format(
bucket=destination_bucket)
sink = logging_client.sink(
sink_name,
filter_,
destination)
if sink.exists():
print('Sink {} already exists.'.format(sink.name))
return
sink.create()
print('Created sink {}'.format(sink.name))
# [END logging_create_sink]
# [START logging_update_sink]
def update_sink(sink_name, filter_):
"""Changes a sink's filter.
The filter determines which logs this sink matches and will be exported
to the destination. For example a filter of 'severity>=INFO' will send
all logs that have a severity of INFO or greater to the destination.
See https://cloud.google.com/logging/docs/view/advanced_filters for more
filter information.
"""
logging_client = logging.Client()
sink = logging_client.sink(sink_name)
sink.reload()
sink.filter_ = filter_
print('Updated sink {}'.format(sink.name))
sink.update()
# [END logging_update_sink]
# [START logging_delete_sink]
def delete_sink(sink_name):
"""Deletes a sink."""
logging_client = logging.Client()
sink = logging_client.sink(sink_name)
sink.delete()
print('Deleted sink {}'.format(sink.name))
# [END logging_delete_sink]
if __name__ == '__main__':
parser = argparse.ArgumentParser(
description=__doc__,
formatter_class=argparse.RawDescriptionHelpFormatter
)
subparsers = parser.add_subparsers(dest='command')
subparsers.add_parser('list', help=list_sinks.__doc__)
create_parser = subparsers.add_parser('create', help=list_sinks.__doc__)
create_parser.add_argument(
'sink_name',
help='Name of the log export sink.')
create_parser.add_argument(
'destination_bucket',
help='Cloud Storage bucket where logs will be exported.')
create_parser.add_argument(
'filter',
help='The filter used to match logs.')
update_parser = subparsers.add_parser('update', help=update_sink.__doc__)
update_parser.add_argument(
'sink_name',
help='Name of the log export sink.')
update_parser.add_argument(
'filter',
help='The filter used to match logs.')
delete_parser = subparsers.add_parser('delete', help=delete_sink.__doc__)
delete_parser.add_argument(
'sink_name',
help='Name of the log export sink.')
args = parser.parse_args()
if args.command == 'list':
list_sinks()
elif args.command == 'create':
create_sink(args.sink_name, args.destination_bucket, args.filter)
elif args.command == 'update':
update_sink(args.sink_name, args.filter)
elif args.command == 'delete':
delete_sink(args.sink_name)