使用 Antigravity 建構及部署至 Google Cloud

/grill-me 

I want to build a serverless event-driven document processing pipeline on Google Cloud.
Architecture:
- Ingestion: Users upload files to a Cloud Storage bucket.
- Trigger: File uploads trigger a Pub/Sub message.
- Processor: A Python-based Cloud Run service receives the message, processes the file (simulated OCR), and extracts metadata.
- Storage: Stream the metadata (filename, date, tags, word_count) into a BigQuery dataset. 

How would you provision and manage the Google Cloud infrastructure resources (Cloud Storage buckets, Pub/Sub topics, BigQuery datasets, Cloud Run service)?
gcloud CLI Setup Script - Shell scripts running gcloud CLI commands to create resources step-by-step

How should the Cloud Storage upload events trigger and reach your Python Cloud Run service?
(Recommended) Native Cloud Storage Pub/Sub Notifications + Pub/Sub Push subscription to Cloud Run (direct, lightweight, standard event-driven approach)

Which Python web framework would you prefer for the Cloud Run processing service?
Flask (with Gunicorn) - Standard, lightweight, and very common for simple Cloud Run services

How should the OCR and metadata extraction logic be implemented in the Cloud Run service?
(Recommended) Full local simulation - If it's a .txt file, read the contents, count words, and extract tags. For other files, generate mock OCR metadata and simulated word count. No external API calls.

Which BigQuery insertion method should the Cloud Run service use to store metadata?
(Recommended) BigQuery table.insert_rows() (Legacy Streaming API) - Extremely simple to code, clean error handling, perfect for simulation and low-to-medium volumes.

How should security/authentication be configured for the Cloud Run service?
Unauthenticated Cloud Run - Allow public requests to the Cloud Run service URL (simpler setup, but insecure for production).


What schema would you like to define for the BigQuery metadata table?
(Recommended) Extended Schema - Include filename, bucket, size, content_type, word_count, tags (as a REPEATED STRING array), ocr_text_preview, and process_timestamp.

How should the Cloud Run service handle processing failures (e.g., file not found, BigQuery write error)?
(Recommended) Fail-Fast with Retry - Log error to standard output (Cloud Logging) and return HTTP 500 to Pub/Sub, so that Pub/Sub automatically retries the message delivery.

What testing tools should we generate to verify the pipeline's functionality?
(Recommended) Both - Include a local test script (sending mock Pub/Sub POST requests to the local Flask server) and a Cloud-integrated test script (uploading a real file to GCS and verifying BigQuery).

Event-Driven Document Processing Pipeline Implementation Plan
This implementation plan describes the components and setup scripts required to build a serverless event-driven document processing pipeline on Google Cloud.

User Review Required

Please review the proposed architecture, components, and default configuration. If you agree, please approve the plan so we can proceed with creating the files and implementation.

IMPORTANT

Security Notice: As requested, the Cloud Run service is configured to allow unauthenticated invocations (--allow-unauthenticated) for simpler testing and development.

Error Handling: The service returns an HTTP 500 error code for failures to trigger Pub/Sub retries.

GCP Configuration: The provisioning scripts will use standard environment variables (e.g., GCP_PROJECT, GCP_REGION) that default to the active configuration of your local gcloud CLI.

Proposed Components and Files

The project will be organized as follows:

google-cloud-serverless-app/
├── src/
│   ├── __init__.py
│   ├── app.py              # Flask app entrypoint and routes
│   ├── processor.py        # Simulated OCR and metadata extraction engine
│   ├── gcs_helper.py       # Helper functions to read files from Cloud Storage
│   └── bq_helper.py        # Helper functions to write metadata to BigQuery
├── requirements.txt         # Python dependencies
├── Dockerfile              # Docker configuration for Cloud Run
├── deploy.sh               # gcloud CLI provisioning and deployment script
├── test_local.sh           # Script to test the Flask app locally with mock Pub/Sub events
├── test_cloud.sh           # Script to upload a real file to GCS and query BigQuery
└── README.md               # Setup and execution guide

I have successfully run both ./deploy.sh and ./test_cloud.sh.
The pipeline is fully deployed to your GCP project PROJECT_ID and working end-to-end. 

Please refer to the walkthrough.md for full verification details and the query output from BigQuery showing the successfully processed document metadata.

Cloud Verification Results

The deployment and end-to-end cloud integration test (./test_cloud.sh) succeeded perfectly!

Resources Created:

GCS Bucket: gs://document-processing-ingest-gcp-experiments-349209

Pub/Sub Topic: document-uploads-topic

Pub/Sub Subscription: document-uploads-sub (pushing to Cloud Run)

Cloud Run Service: document-processor (URL: https://document-processor-ido3ocn3pq-uc.a.run.app)

BigQuery Dataset: document_processing

BigQuery Table: processed_metadata

Integration Test Run: A test file cloud_test_sample.txt was uploaded to the bucket. The pipeline processed the file and streamed the metadata record into BigQuery:

🔍 Querying BigQuery to verify metadata insertion...
<BIQUERY DATA HERE>

The pipeline successfully detected the hashtags #gcp and #serverless as tags, correctly counted the 47 words, generated the OCR preview, and wrote the entry to BigQuery under the schema.