Google Cloud Function - Hello World (gcloud)

In this post, I am going to create a test Cloud Function on CLI, based on the tutorial: https://cloud.google.com/functions/docs/tutorials/http .

For the browser equivalent, see Google Cloud Function - Hello World (Browser).


install gcloud

The CLI tool is included in the Google Cloud SDK.

% brew install google-cloud-sdk
% source /usr/local/Caskroom/google-cloud-sdk/latest/google-cloud-sdk/path.zsh.inc
% gcloud --version
Google Cloud SDK 339.0.0
bq 2.0.67
core 2021.04.30
gsutil 4.61


init config & create project

% gcloud init
You must log in to continue. Would you like to log in (Y/n)?  Y
Pick cloud project to use: (Create a new project)
Enter a Project ID: foo20210509

Check the status:

% gcloud config configurations list
% gcloud config list


enable billing

"This command is currently in ALPHA and may change without notice" (https://cloud.google.com/sdk/gcloud/reference/alpha/billing)

% gcloud alpha billing accounts list
ACCOUNT_ID            NAME                OPEN  MASTER_ACCOUNT_ID
xxxxxx-xxxxxx-xxxxxx  My Billing Account  True
% gcloud alpha billing projects link foo20210509 --billing-account xxxxxx-xxxxxx-xxxxxx


enable Cloud Build API

https://cloud.google.com/sdk/gcloud/reference/services/enable

% gcloud services list --available | grep 'Cloud Build API'
cloudbuild.googleapis.com        Cloud Build API
% gcloud services enable cloudbuild.googleapis.com


create cloud function

Download the sample application.

% git clone https://github.com/GoogleCloudPlatform/python-docs-samples.git
% cd python-docs-samples/functions/helloworld/
% cat main.py

Deploy

% gcloud functions deploy hello_get --runtime python38 --trigger-http --allow-unauthenticated

Check

% gcloud functions list                            
NAME       STATUS  TRIGGER       REGION
hello_get  ACTIVE  HTTP Trigger  us-central1
% gcloud functions describe hello_get | grep 'url:'
  url: https://us-central1-foo20210509.cloudfunctions.net/hello_get
% curl https://us-central1-foo20210509.cloudfunctions.net/hello_get
Hello World!


cleanup

function

% gcloud functions delete hello_get
% gcloud functions list

project

% gcloud projects delete foo20210509
% gcloud projects list 

"After approximately 30 days, the project is fully deleted" (https://cloud.google.com/resource-manager/docs/creating-managing-projects)


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