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#!/usr/bin/env python

# Copyright (C) 2013 Google Inc.

#

# 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.

"""Command-line sample application for listing all objects in a bucket using

the Cloud Storage API.

This sample is used on this page:

https://cloud.google.com/storage/docs/json_api/v1/json-api-python-samples

For more information, see the README.md under /storage.

"""

import argparse

import json

import googleapiclient.discovery

def create_service():

"""Creates the service object for calling the Cloud Storage API."""

# Construct the service object for interacting with the Cloud Storage API -

# the 'storage' service, at version 'v1'.

# You can browse other available api services and versions here:

# https://developers.google.com/api-client-library/python/apis/

return googleapiclient.discovery.build('storage', 'v1')

def get_bucket_metadata(bucket):

"""Retrieves metadata about the given bucket."""

service = create_service()

# Make a request to buckets.get to retrieve a list of objects in the

# specified bucket.

req = service.buckets().get(bucket=bucket)

return req.execute()

def list_bucket(bucket):

"""Returns a list of metadata of the objects within the given bucket."""

service = create_service()

# Create a request to objects.list to retrieve a list of objects.

fields_to_return = \

'nextPageToken,items(name,size,contentType,metadata(my-key))'

req = service.objects().list(bucket=bucket, fields=fields_to_return)

all_objects = []

# If you have too many items to list in one request, list_next() will

# automatically handle paging with the pageToken.

while req:

resp = req.execute()

all_objects.extend(resp.get('items', []))

req = service.objects().list_next(req, resp)

return all_objects

def main(bucket):

print(json.dumps(get_bucket_metadata(bucket), indent=2))

print(json.dumps(list_bucket(bucket), indent=2))

if __name__ == '__main__':

parser = argparse.ArgumentParser(

description=__doc__,

formatter_class=argparse.RawDescriptionHelpFormatter)

parser.add_argument('bucket', help='Your Cloud Storage bucket.')

args = parser.parse_args()

main(args.bucket)