gcp-cloud-functions

SKILL.md

GCP Cloud Functions

Table of Contents

Overview

When to Use

Quick Start

Reference Guides

Best Practices

Overview

Google Cloud Functions enables event-driven serverless computing on Google Cloud Platform. Build functions with automatic scaling, integrated security, and seamless integration with Google Cloud services for rapid development.

When to Use

HTTP APIs and webhooks

Pub/Sub message processing

Storage bucket events

Firestore database triggers

Cloud Scheduler jobs

Real-time data processing

Image and video processing

Data pipeline orchestration

Quick Start

Minimal working example:

# Install Google Cloud SDK
curl https://sdk.cloud.google.com | bash
exec -l $SHELL

# Initialize and authenticate
gcloud init
gcloud auth application-default login

# Set project
gcloud config set project MY_PROJECT_ID

# Create service account
gcloud iam service-accounts create cloud-function-sa \
  --display-name "Cloud Function Service Account"

# Grant permissions
gcloud projects add-iam-policy-binding MY_PROJECT_ID \
  --member="serviceAccount:cloud-function-sa@MY_PROJECT_ID.iam.gserviceaccount.com" \
  --role="roles/cloudfunctions.invoker"

# Deploy HTTP function
gcloud functions deploy my-http-function \
  --gen2 \
  --runtime nodejs18 \
  --region us-central1 \
// ... (see reference guides for full implementation)

Reference Guides

Detailed implementations in the references/ directory:

Guide
Contents

Cloud Function Creation with gcloud CLI
Cloud Function Creation with gcloud CLI

Cloud Functions Implementation (Node.js)
Cloud Functions Implementation (Node.js)

Terraform Cloud Functions Configuration
Terraform Cloud Functions Configuration

Best Practices

✅ DO

Use service accounts with least privilege

Store secrets in Secret Manager

Implement proper error handling

Use environment variables for configuration

Monitor with Cloud Logging and Cloud Monitoring

Set appropriate memory and timeout

Use event filters to reduce invocations

Implement idempotent functions

❌ DON'T

Store secrets in code

Use default service account

Create long-running functions

Ignore error handling

Deploy without testing

Use unauthenticated access for sensitive functions

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