| #!/usr/bin/env python |
| |
| # Copyright 2015 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. |
| |
| """Example of using the Compute Engine API to create and delete instances. |
| |
| Creates a new compute engine instance and uses it to apply a caption to |
| an image. |
| |
| For more information, see the README.md under samples/compute. |
| """ |
| |
| import argparse |
| import os |
| import time |
| |
| import googleapiclient.discovery |
| |
| |
| # [START compute_apiary_list_instances] |
| def list_instances(compute, project, zone): |
| result = compute.instances().list(project=project, zone=zone).execute() |
| return result['items'] if 'items' in result else None |
| # [END compute_apiary_list_instances] |
| |
| |
| # [START compute_apiary_create_instance] |
| def create_instance(compute, project, zone, name, bucket): |
| # Get the latest Debian Jessie image. |
| image_response = compute.images().getFromFamily( |
| project='debian-cloud', family='debian-9').execute() |
| source_disk_image = image_response['selfLink'] |
| |
| # Configure the machine |
| machine_type = "zones/%s/machineTypes/n1-standard-1" % zone |
| startup_script = open( |
| os.path.join( |
| os.path.dirname(__file__), 'startup-script.sh'), 'r').read() |
| image_url = "http://storage.googleapis.com/gce-demo-input/photo.jpg" |
| image_caption = "Ready for dessert?" |
| |
| config = { |
| 'name': name, |
| 'machineType': machine_type, |
| |
| # Specify the boot disk and the image to use as a source. |
| 'disks': [ |
| { |
| 'boot': True, |
| 'autoDelete': True, |
| 'initializeParams': { |
| 'sourceImage': source_disk_image, |
| } |
| } |
| ], |
| |
| # Specify a network interface with NAT to access the public |
| # internet. |
| 'networkInterfaces': [{ |
| 'network': 'global/networks/default', |
| 'accessConfigs': [ |
| {'type': 'ONE_TO_ONE_NAT', 'name': 'External NAT'} |
| ] |
| }], |
| |
| # Allow the instance to access cloud storage and logging. |
| 'serviceAccounts': [{ |
| 'email': 'default', |
| 'scopes': [ |
| 'https://www.googleapis.com/auth/devstorage.read_write', |
| 'https://www.googleapis.com/auth/logging.write' |
| ] |
| }], |
| |
| # Metadata is readable from the instance and allows you to |
| # pass configuration from deployment scripts to instances. |
| 'metadata': { |
| 'items': [{ |
| # Startup script is automatically executed by the |
| # instance upon startup. |
| 'key': 'startup-script', |
| 'value': startup_script |
| }, { |
| 'key': 'url', |
| 'value': image_url |
| }, { |
| 'key': 'text', |
| 'value': image_caption |
| }, { |
| 'key': 'bucket', |
| 'value': bucket |
| }] |
| } |
| } |
| |
| return compute.instances().insert( |
| project=project, |
| zone=zone, |
| body=config).execute() |
| # [END compute_apiary_create_instance] |
| |
| |
| # [START compute_apiary_delete_instance] |
| def delete_instance(compute, project, zone, name): |
| return compute.instances().delete( |
| project=project, |
| zone=zone, |
| instance=name).execute() |
| # [END compute_apiary_delete_instance] |
| |
| |
| # [START compute_apiary_wait_for_operation] |
| def wait_for_operation(compute, project, zone, operation): |
| print('Waiting for operation to finish...') |
| while True: |
| result = compute.zoneOperations().get( |
| project=project, |
| zone=zone, |
| operation=operation).execute() |
| |
| if result['status'] == 'DONE': |
| print("done.") |
| if 'error' in result: |
| raise Exception(result['error']) |
| return result |
| |
| time.sleep(1) |
| # [END compute_apiary_wait_for_operation] |
| |
| |
| # [START compute_apiary_run] |
| def main(project, bucket, zone, instance_name, wait=True): |
| compute = googleapiclient.discovery.build('compute', 'v1') |
| |
| print('Creating instance.') |
| |
| operation = create_instance(compute, project, zone, instance_name, bucket) |
| wait_for_operation(compute, project, zone, operation['name']) |
| |
| instances = list_instances(compute, project, zone) |
| |
| print('Instances in project %s and zone %s:' % (project, zone)) |
| for instance in instances: |
| print(' - ' + instance['name']) |
| |
| print(""" |
| Instance created. |
| It will take a minute or two for the instance to complete work. |
| Check this URL: http://storage.googleapis.com/{}/output.png |
| Once the image is uploaded press enter to delete the instance. |
| """.format(bucket)) |
| |
| if wait: |
| input() |
| |
| print('Deleting instance.') |
| |
| operation = delete_instance(compute, project, zone, instance_name) |
| wait_for_operation(compute, project, zone, operation['name']) |
| |
| |
| if __name__ == '__main__': |
| parser = argparse.ArgumentParser( |
| description=__doc__, |
| formatter_class=argparse.RawDescriptionHelpFormatter) |
| parser.add_argument('project_id', help='Your Google Cloud project ID.') |
| parser.add_argument( |
| 'bucket_name', help='Your Google Cloud Storage bucket name.') |
| parser.add_argument( |
| '--zone', |
| default='us-central1-f', |
| help='Compute Engine zone to deploy to.') |
| parser.add_argument( |
| '--name', default='demo-instance', help='New instance name.') |
| |
| args = parser.parse_args() |
| |
| main(args.project_id, args.bucket_name, args.zone, args.name) |
| # [END compute_apiary_run] |