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refactored: to utilise the google adk and production grade agent
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Jonathan Boniface
2026-09-02 21:42:10 +01:00
parent b9a924cf4a
commit a24a44e28c
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deliverables/executions/52a4f886-29c4-45bc-b311-f1cfd481cdce/target/architecture.md Normal file
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# Phase 1 — Architecture & Product Selection
## Selected Products
- **Compute / Serving**: Google Cloud Run (Fully Managed Container Ingress & Stateless Execution)
- **Messaging & Eventing**: Google Cloud Pub/Sub (Regional Event Bus for Asynchronous Decoupling)
- **State & Storage**: Google Cloud Storage & Firestore (Database & Bucket Storage for Durable Audit Event Replay)
- **Security & Identity**: Cloud IAM (Least Privilege Service Accounts) & KMS (Customer-Managed Encryption Keys)
- **Artifact Registry**: Google Artifact Registry (OCI Container Image Hosting)
## Component Responsibilities
1. **Cloud Run Service**: Accepts HTTPS requests, validates client signatures, enqueues events to Pub/Sub, returns 202 Accepted.
2. **Pub/Sub Topic & Subscription**: Buffer incoming payloads, deliver events asynchronously with exponential backoff retries to consumer handlers.
3. **Audit Bucket (GCS)**: Raw event retention for replay, payload audit, and operational troubleshooting.
## Security & Compliance
- HTTPS ingress with TLS 1.3 encryption in transit.
- Default Google-managed encryption at rest for Cloud Storage and Pub/Sub.
- Cloud Run service account bound strictly to `roles/pubsub.publisher` and `roles/storage.objectCreator`.
## Grounded Documentation Citations (Google Developer Knowledge MCP)
- [Google Cloud Run Architecture Guide](https://cloud.google.com/run/docs/overview/what-is-cloud-run)

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deliverables/executions/52a4f886-29c4-45bc-b311-f1cfd481cdce/target/architecture.mmd Normal file
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flowchart TD
Client[External HTTPS Client] -->|HTTPS POST /events| CloudRun[Google Cloud Run Service]
CloudRun -->|Publish Event| PubSubTopic[Cloud Pub/Sub Topic]
CloudRun -->|Write Raw Payload| GCSAudit[Cloud Storage Audit Bucket]
PubSubTopic -->|Push Delivery| EventConsumer[Cloud Run Consumer Service]
EventConsumer -->|Acknowledge| PubSubTopic

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deliverables/executions/52a4f886-29c4-45bc-b311-f1cfd481cdce/target/requirements.md Normal file
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# Step 0 — Requirements discovery
## Workflow request
Perform live environment discovery scan for project shining-hydra-367716 and propose serverless target architecture migration
## Functional requirements
- Accept authenticated HTTPS requests from external clients.
- Execute stateless application logic behind a versioned service endpoint.
- Publish asynchronous domain events from the application.
- Process events independently and tolerate retry/redelivery.
- Persist durable objects and application state separately.
- Expose operational logs, metrics, and audit-relevant events.
- Support repeatable infrastructure changes through declarative IaC.
## Non-functional requirements
- High availability within a selected Google Cloud region.
- Horizontal scale for bursty HTTP traffic and asynchronous work.
- At-least-once event delivery with idempotent consumers.
- Encryption in transit and at rest using managed defaults initially.
- Least-privilege runtime identities and private network egress where practical.
- Observable deployments with structured logs and actionable health signals.
- Reproducible, reviewable, non-deployment validation in CI.
## Constraints
- Google Cloud is the target cloud; exact products are not selected in discovery.
- Terraform must be deployable without embedding secrets or credentials.
- The baseline must not provision resources during validation.
- A container image must be supplied by the application delivery pipeline.
- State backends, DNS ownership, identity federation, and organization policies are external concerns.
## Assumptions
- A single region is acceptable for the initial deployment.
- The application can be packaged as an OCI container listening on port 8080.
- Events can use at-least-once semantics and consumers can deduplicate.
- A dedicated Google Cloud project is available.
- Managed encryption keys and public ingress are acceptable defaults pending review.
## Open questions
- What are the actual API, event, data-retention, and compliance requirements?
- Which clients and identity provider must authenticate requests?
- What are traffic, payload-size, latency, RTO, and RPO targets?
- Which data is relational, document, object, or analytical?
**Product selection deferred:** `true` for this phase.