Park University Unit 3 Create a Program Code Python Programming Task – Description
Read the page Methods: instances.stopLinks to an external site., which describes the process for stopping a running instance using an API. You do not need to worry about installing any packages or authorization keys as long you run your code in the Cloud Shell.
Assignment
To document the steps below, create a Word document that contains screenshots and brief explanations of what you did. This serves as a notebook for you and a summary for the instructor to grade.
On the page Methods: instances.stopLinks to an external site., use the API Explorer in section “Try this API” to test stopping your instance using an API. The three fields you need to set are project (id not name), zone, and instance name. Run this tool until you get the parameters correct, then take a screenshot.
Copy the python code from the section “Examples” and put it in a file on the Cloud Shell. You can either save the file on your local computer and upload the file, or you can open the Cloud Shell code editor. The convention is for the file to end with a .py extension.
Edit your python program to change the sections marked TODO, to use the parameters you found in step 1.
Run your program from the Cloud Shell command line using python3 filename.py
Make sure your program stops a running instance. You can check this by looking at the Cloud Console.
Modify your program so that instead of printing the entire dictionary, response, it only prints the following, each on a separate line: user, operation type, start date, start time
User name: instructor@gmail.com
Operation: stop
Starting date: 2019-05-26
Starting time: 13:12:36.826-07:00
Since response is a dictionary, you access the elements like response[‘user’]. Take a screenshot of the output of your program.
In addition to stopping your instance, you should now be able to write a python program to start your instance. See the page Method: instances.start Links to an external site.for all the details, though you should find things are very similar to what you have just done. This program should print the same type of information as in step 5 of this assignment. Take a screenshot of its output.
In your Word document, write a paragraph about what you did to write the program in step 6. Include any Linux commands you used.
See the page Method: instances.listLinks to an external site., for generating a list of your instances. Copy the python program and upload it to your Cloud Shell. Edit the program to specify your project and zone, then replace the print statement with
print(instance[‘name’], ‘is’, instance[‘status’])
Run your program to get a list of your instances and their current status.
Stop your instance, any way that you like. Then run your programs in this order
list, start (wait for it to finish), list, stop, list
Take a screenshot of the output, including the command prompt, so that it shows the following information. Be sure it is a screenshot image.
Notes
When uploading files from your computer to the Cloud Shell, Google will not overwrite any file that is already there. Instead, it adds a version number to your file. This may not be what you expect. So the first time you upload the file runme.py, you’ll get runme.py on the Cloud Shell. But the second time, you’ll get runme_(1).py and the third time runme_(2).py . You’ll either have to keep track of the latest one, or you can delete the file from the Cloud Shell before uploading a new one.
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