Overview

This lab shows how to add authentication to your application using Identity Platform. This authorization identifies who you are, and determines what you can do. For more information, see Authentication Overview.

Identity Platform provides a drop-in, customizable authentication service for user sign-up and sign-in. Development and admin activities are made easier with a range of app SDKs (Android, iOS, and web) as well as admin SDKs (Node.js, Java, Python, and more). For more information about Identity Platform, see Identity Platform.

The application used in this lab is an online Quiz application. You add Identity Platform authentication, and then configure authentication to use a simple email address and password credential. Finally you ensure that users must register and log in before taking a quiz.

Objectives

In this lab, you perform the following tasks:

• Add Identity Platform configuration to a client-side web application
• Write Python code to integrate Identity Platform Authentication into a client-side web application

Setup and requirements

For each lab, you get a new Google Cloud project and set of resources for a fixed time at no cost.

1. Make sure you signed into Google Skills using an incognito window.

2. Note the lab's access time (for example, and make sure you can finish in that time block.

3. When ready, click .

4. Note your lab credentials. You will use them to sign in to Google Cloud Console.

5. Click Open Google Console.

6. Click Use another account and copy/paste credentials for this lab into the prompts.

7. Accept the terms and skip the recovery resource page.

Activate Google Cloud Shell

Google Cloud Shell is a virtual machine that is loaded with development tools. It offers a persistent 5GB home directory and runs on the Google Cloud.

Google Cloud Shell provides command-line access to your Google Cloud resources.

1. In Cloud console, on the top right toolbar, click the Open Cloud Shell button.

   

2. Click Continue.

It takes a few moments to provision and connect to the environment. When you are connected, you are already authenticated, and the project is set to your PROJECT_ID. For example:

gcloud is the command-line tool for Google Cloud. It comes pre-installed on Cloud Shell and supports tab-completion.

• You can list the active account name with this command:

Output:

Example output:

• You can list the project ID with this command:

Output:

Example output:

Task 1. Prepare the case study application

In this task, you clone, configure, and run the Quiz application.

Clone source code in Cloud Shell

1. Clone the application skeleton from a repository on GitHub.com:

   git clone https://github.com/GoogleCloudPlatform/training-data-analyst

2. Create a soft link as a shortcut to the working directory:

   ln -s ~/training-data-analyst/courses/developingapps/v1.3/python/firebase ~/firebase

Configure and run the case study application

1. Navigate to the directory that contains the sample files for this lab:

   cd ~/firebase/start

2. Update the App Engine region using the sed command.

   export REGION={{{project_0.startup_script.app_region|REGION}}} sed -i "s/us-central/$REGION/g" prepare_environment.sh

3. Configure the application:

   . prepare_environment.sh

   This script file:

   • Creates an App Engine application.
   • Creates a Cloud Storage bucket named gs:[Project-ID]-media.
   • Exports two environment variables: GCLOUD_PROJECT and GCLOUD_BUCKET.
   • Creates a virtualenv isolated Python environment for Python 3 and activates it.
   • Runs > pip install -r requirements.txt.
   • Creates entities in Cloud Datastore.
   • Prints out the Google Cloud Platform Project ID.

4. Run the application:

   python run_server.py

Start the case study application

• In Cloud Shell, click Web preview () > Preview on port 8080 to preview the Quiz application.

Leave this window open for now, because you will need the Cloud Shell Web preview domain (which is in the form: 8080-27542cac-44d0-41a9-9e96-065800c2100c.ql-europe-west1-ctgq.cloudshell.dev) later in this lab.

Task 2. Examine the case study application code

In this task you examine the case study application code. You can use the shell editors that are installed on Cloud Shell, such as nano or vim or the Cloud Shell code editor.

This lab uses the Cloud Shell code editor to review the Quiz application code.

Launch the Cloud Shell code editor

• From Cloud Shell, click Open Editor to launch the code editor.

Review the client application

1. Navigate to the /firebase/start folder using the file browser panel on the left side of the code editor.

2. Continue navigating. Open ...quiz/webapp/static/client/. Click on the index.html file.

   This file is the single page in the AngularJS Single Page Application (SPA). It contains <script></script> tags for the application libraries and code, and markup where the SPA will render dynamic output.

3. Select the qiq-login-template.html file in the ...quiz/webapp/static/client/app/auth/ folder.

   This file contains the AngularJS template for the Login component. Notice how it contains a couple of textboxes and a button. The button has an event handler that runs code when it is clicked.

4. Still in this folder, select the qiq-login.js file.

   This file contains an AngularJS component. It allows the user to log in to the application or to navigate to a registration page.

Task 3. Configure Identity Platform Authentication

In this task you confirm that billing is enabled for your cloud project. Next, you configure Identity Platform to sign in a user with an email and password. You then create a user which you can use to login to the Quiz Application.

Confirm that billing is enabled

1. In the Google Cloud Console, on the Navigation menu (), click Billing.

2. Verify that a Billing account is linked to the project. You should see a message stating that the Billing account "Qwiklabs Production gcpd xx" is linked to this project.

Configure Identity Platform for email and password

1. In the Google Cloud Console, on the Navigation menu (), click View all Products, then search and click Identity Platform.

2. Click Enable Identity Platform.

   Note: If you see the Leave site pop-up message, click Leave.

   The Identity Platform page appears in the Cloud Console.

   

3. Click Add a Provider.

4. In the Sign-in method window, for Select a provider, select Email / Password.

5. Click Enabled.

6. In the Authorized Domains pane, click Add Domain.

7. Return to the running Quiz Application and copy the domain (which has the format 8080-27542cac-44d0-41a9-9e96-065800c2100c.ql-europe-west1-ctgq.cloudshell.dev).

8. Paste the domain into the Domain field.

9. Modify the pasted domain so that only the domain name is in the Domain field.

   You should remove https:// and anything that follows the domain name, including slashes. The domain name should end with cloudshell.dev.

10. Click Save.

11. In the new identity provider window click Save.

    You may need to scroll down to see the Save button.

Add a user

1. In the Identity Platform pane, click Users.

2. Click Add User.

3. In the Add user dialog box, specify the following:

   Email	user1@example.com
   Password	abc123!

4. Click Add.

Task 4. Integrate a client-side web application with Identity Platform

In this task you apply the your Identity Platform configuration to your client-side web application.

1. In the navigation pane, click Providers.

2. Click Application Setup Details.

3. In the Configure your application dialog box, copy the Identity Platform markup.

   

4. Click Close.

5. In the Cloud Shell code editor, open the index.html file in ...webapp/static/client/.

6. Paste the configuration markup just before the other <script></script> tags at the bottom of the page.

7. Save the index.html file.

Task 5. Run the application

In this task you verify that you can login to the Quiz Application using the credentials you created in Identity Platform in a previous step. You then register a new user in the Quiz Application and verify that these credentials are added to Identity Platform.

1. Return to the Quiz application and refresh your browser.

2. In the navigation bar, click Take Test.

   

3. In the navigation bar, click GCP, People, or Places.

   Note: You should not be able to take a test without being logged in.

4. In the navigation bar, enter the following invalid credentials:

   Email	user2@example.com
   Password	abcd1234$

5. Click Login.

   Note: Login will fail because the user is not registered.

6. Enter the following credentials that you created in a previous task:

   Email	user1@example.com
   Password	abc123!

7. Click Login.

   The user's email address should be shown in the navigation bar, and the first question will be presented.

   Note: If the login does not work, the password may not have been configured correctly. Return to the Users page in Identity Platform and delete user1@example.com, and then add user1@example.com with the correct password.

8. In the navigation bar, click Logout.

9. Click the Register link.

10. In the new form, enter the following credentials:

    Email	user2@example.com
    Password	abcd1234$

11. Click Register.

    A complex password is required. If you have entered an acceptable password, you should be logged in and redirected to the GCP quiz.

    You are able to answer questions and submit answers.

12. In the navigation bar, click Logout.

    Note: You will be logged out and redirected to the Quiz homepage.

13. In the Google Cloud Console, in the Identity Platform navigation pane, click Users.

    Note: You should see user2@example.com has been added as a user.

Congratulations!

In this lab, you learned how to use Identity Platform to enable email and password registration for your application.

End your lab

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