dewey-service 0.7.4

LSMC Dewey canonical artifact registry service

Dewey

Dewey is the canonical artifact registry and artifact-resolution service for the stack. It gives analysis and delivery systems a stable place to register artifact identity, sets, share references, and links to external objects without handing artifact authority to the portal or the lab system.

Dewey owns:

• artifact identity and artifact metadata
• artifact-set identity and membership
• artifact resolution and storage metadata lookup
• share-reference issuance
• external object links to artifacts and artifact sets

Dewey does not own:

• customer release visibility decisions
• Atlas storage policy authority
• wet-lab or analysis execution state

Component View

flowchart LR
    Clients["Atlas / Ursa / operators"] --> Dewey["Dewey API + small browser UI"]
    Dewey --> TapDB["TapDB persistence"]
    Dewey --> Cognito["Cognito / daycog"]

Prerequisites

• Python 3.11+
• local PostgreSQL/TapDB-compatible runtime
• HTTPS certificates for the normal local path
• optional Cognito setup for the browser UI

Getting Started

Quickstart

source ./activate <deploy-name>
dewey config init
dewey db build --target local
dewey server start --port 8914

source ./activate <deploy-name> creates the deployment-scoped conda environment from repo-root environment.yaml when it is missing, then activates it and installs only the Dewey repo editable.

HTTPS is the expected local posture. Dewey now resolves TLS material in this order:

• explicit --cert and --key
• generic SSL_CERT_FILE and SSL_KEY_FILE
• legacy DEWEY_SSL_CERT_FILE and DEWEY_SSL_KEY_FILE
• shared deployment-scoped Dayhoff certs under ~/.local/state/dayhoff/<deploy-name>/certs/
• repo-local certs/cert.pem and certs/key.pem as a temporary compatibility fallback
• mkcert generation into the shared deployment-scoped Dayhoff cert directory

Use --no-ssl only when you explicitly want an HTTP local run.

Architecture

Technology

• FastAPI + Jinja2
• Typer-based dewey CLI
• TapDB-backed persistence
• Cognito-backed browser auth

Core Object Model

Dewey centers on:

• artifacts
• artifact sets
• external objects and external-object relations
• share references
• resolution requests that map identifiers to storage metadata

Runtime Shape

• app factory: dewey_service.app:create_app
• CLI: dewey
• main CLI groups: server, db, config, env, test, quality

API Shape

Current major route groups include:

• artifact registration and lookup under /api/v1/artifacts
• artifact-set registration and membership under /api/v1/artifact-sets
• resolution flows under /api/v1/resolve/*
• share references and external-object relations under /api/v1/*

The browser UI is intentionally narrow and focused on search, anomalies, observability, and literature-oriented workflows.

Cost Estimates

Approximate only.

• Local development: workstation plus local database.
• Shared sandbox: generally a modest portion of the broader Dayhoff-managed service footprint.
• Production-like environments cost more because registry availability, storage metadata, TLS, and database uptime matter more than the Dewey code itself.

Development Notes

• Canonical local entry path: source ./activate <deploy-name>
• Use dewey ... for Dewey-owned operations
• Use tapdb ... for shared DB/runtime lifecycle when Dewey explicitly delegates it
• Use daycog ... for shared Cognito lifecycle when Dewey explicitly delegates it
• dewey db reset --target local deletes the current local TapDB target and rebuilds it
• dewey db nuke --target local deletes the current local TapDB target without rebuilding

Useful checks:

source ./activate <deploy-name>
dewey --help
pytest -q

Sandboxing

• Safe: docs work, tests, dewey --help, and local-only runtime checks
• Local-stateful: dewey db build --target local
• Requires extra care: HTTPS cert management, Cognito lifecycle, and any deployed environment integration

Current Docs

• Docs index

References

• FastAPI
• TapDB
• daylily-cognito