Retrieve Cloud Source

How to retrieve the latest source code from a Google Cloud Run service when the original repository is not available.

Overview

Sometimes you may need to access the source code of a deployed service (like agent-chat-proxy) for debugging or migration purposes, especially if the original git repository is disconnected or lost. Cloud Build stores the source code used for builds in Google Cloud Storage (GCS).

Prerequisites

•gcloud CLI installed and authenticated.
•Permissions to view Cloud Build history and access the GCS source bucket.

Procedure

1. Identify the Build

Find the latest successful build for the service to identify the source location.

bash

gcloud builds list --project=YOUR_PROJECT_ID --limit=5

Look for the build corresponding to your service (e.g., agent-chat-proxy). Note the SOURCE URI, which will look like: gs://<project_id>_cloudbuild/source/<timestamp>-<hash>.tgz

2. Download and Extract

Use gsutil to copy the source archive to a temporary directory.

Important: Do not download this into a tracked git directory to avoid committing sensitive cloud artifacts.

bash

# Create a temp directory (ensure this is in .gitignore)
mkdir -p temp_backend_source

# Copy the source (replace URI with the one found in step 1)
gsutil cp gs://YOUR_PROJECT_ID_cloudbuild/source/YOUR_SOURCE_URI.tgz temp_backend_source/source.tgz

# Extract and cleanup
cd temp_backend_source
tar -xzf source.tgz
rm source.tgz

3. Analyze and Cleanup

You can now analyze the code in temp_backend_source/. When finished, remember to remove the directory.

bash

rm -rf temp_backend_source