Getting Started With API Gateway and Cloud Functions

Prerequisites:

• Google Cloud Account

• Installing Google CLI

• Sample application to deploy to gcloud

• Postman to test

1. In the Google Cloud console, go to the Dashboard page and select or create a Google Cloud project.

   • Go to Dashboard Page https://console.cloud.google.com/projectselector2/home/dashboard?_ga=2.124589327.405847725.1691588802-1872602126.1691583025

   • Select the Project as shown below and click on New Project

• Name the Project as per Naming standards and click on create.

1. Confirm billing is enabled for your project.

   https://cloud.google.com/billing/docs/how-to/modify-project

Using Google Cloud CLI:

1. Install Google CLI in Mac using bash.

• command to install CLI using bash

·       curl https://sdk.cloud.google.com | bash

• For other installation process for Mac or Windows.

  https://cloud.google.com/sdk/docs/install-sdk

1. Login to gcloud in CLI

•    gcloud auth login

1. To set Project Id

·       gcloud config set project projectId

• Get the project Id selecting the project and projectId can be found in the URL.

1. To check if Service List enabled

    ·       gcloud services list
   

   • Enabling required services

API Gateway requires that you enable the following Google services:

Name	Title
apigateway.googleapis.com	API Gateway API
servicemanagement.googleapis.com	Service Management API
servicecontrol.googleapis.com	Service Control API

• If you do not see the required services listed, enable them:

    - gcloud services enable apigateway.googleapis.com
    - gcloud services enable servicemanagement.googleapis.com
    - gcloud services enable servicecontrol.googleapis.com

1. Sample application to deploy to gcloud.

cmd:
gcloud functions deploy java-http-function --gen2 --entry-point com.example.functions.Main --runtime=java11 –-{Region} --source={folderlocation} --trigger-http --allow-unauthenticated

Example:
gcloud functions deploy java-http-function --gen2 --entry-point com.example.functions.Main --runtime=java11 --region=us-east1 --source=/Users/Downloads/gcp-cloud-functions --trigger-http --allow-unauthenticated

• On Completion of deployment Gcp URL will be generated to call

1. Test the Endpoint URL with the Input as per your implementation.

1. To trace Logs