trellis-process 0.3.0

A lightweight process tracker (Process / ProcessStep) for long-running, distributed workflows.

trellis

A lightweight process tracker for long-running, distributed workflows.

trellis gives you a small, reusable Process / ProcessStep domain model you can use to track business workflows across services and bounded contexts.

It works great for:

• High-level journeys (e.g. referral lifecycle in Harmony)
• Sub-processes (e.g. authorization flow or claim adjudication in Pulse)
• Any long-running process where multiple steps must eventually complete

Trellis is intentionally storage-agnostic: you bring your own database (PostgreSQL, DynamoDB, etc.) and wire it via a repository interface. The core library focuses on the domain model and invariants.

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Features

• ✅ Generic Process + ProcessStep model
• ✅ Supports multiple process_types (e.g. "ReferralJourney", "ClaimAdjudication")
• ✅ Tracks required steps, state (pending, in_progress, completed, failed)
• ✅ Simple API: mark_step_completed, mark_step_failed, has_failed, is_completed
• ✅ Storage-agnostic: integrate with Postgres, DynamoDB, etc.
• ✅ In-memory repository for demos and unit tests

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Installation

pip install trellis-process