Pic-a-daily

Introduction

This is the code for the Pic-a-daily, an application to upload, analyse and share pictures using Google Cloud serverless solutions, namely Cloud Functions, App Engine, and Cloud Run.

There are 2 versions of the app:

1. Choreographed version using events from Cloud Functions, Pub/Sub, Eventarc.
2. Orchestrated version using Workflows.

Labs

There is a workshop you can follow to build the app:

• Lab 1 — Store and analyse pictures
• Lab 2 — Create thumbnails of big pictures
• Lab 3 — Run containers on a schedule
• Lab 4 — Create a web frontend
• Lab 5 — Image garbage collector
• Lab 6 — Orchestration with Workflows

Presentation

There's a presentation that accompanies the workshop.

Architecture - Choreographed (event-driven)

Architecture - Orchestrated

Scripts and Terraform

There are shell scripts and terraform configs to setup each lab.

Solutions used

The app uses the following solutions:

Compute:

• Cloud Functions — functions as a service
• App Engine — application as a service
• Cloud Run — container as a service

Data:

• Cloud Storage — for storing file blobs (images)
• Cloud Firestore — for structured data

Services:

• Eventarc - to receive events from various Google Cloud sources.
• Vision API — to analyze pictures
• Cloud Logging — to track interesting events
• Cloud Scheduler — to run workloads on a schedule
• Cloud Pub/Sub — for publish/subscribe-type messaging
• Cloud Shell — for developing online, in the cloud
• Workflows - to orchestrate services

This is not an official Google product.