How is control flow managed in the engine?

Lemline uses an exception-driven model where specific subtypes of AsyncTaskException (like WaitStarted or ForkStarted) signal the orchestrator to handle long-running or parallel operations.

How do I add a new task type using this skill?

The skill guides you through creating a serializable TaskState, implementing a corresponding NodeProcessor, and registering it in the factory logic.

What is the primary purpose of lemline-core?

It is the pure, stateless execution engine for the Lemline Serverless Workflow DSL v1.0 specification, designed for high efficiency and minimal database reliance.

Why does Lemline emphasize stateless processors?

Statelessness allows the engine to be event-driven and highly scalable, enabling workflow execution to pause and resume across different workers without relying on local memory.

Lemline Core Development

Name: Lemline Core Development
Author: lemline

bylemline

•

API 开发

Facilitates development and maintenance of the lemline-core serverless workflow execution engine.

This skill provides comprehensive guidance for developers working on the lemline-core module, the stateless execution engine for the Lemline Serverless Workflow DSL. It covers critical implementation details for orchestrators, processors, node navigation, and state serialization, ensuring that contributors follow the project's stateless architecture and exception-driven control flow patterns. It is particularly useful when adding new task types, modifying execution logic, or debugging complex parallel workflow branches within the serverless runtime.

主要功能

01Standardized testing patterns using FullOrchestrator and unit tests

02Guidance on exception-driven control flow using AsyncTaskException

03Standardized patterns for creating stateless NodeProcessors

04Rules for implementing Serializable TaskStates and scope variables

05Architecture overviews for step-by-step and full workflow execution

0636 GitHub stars

使用场景

01Refactoring core orchestration logic for performance or spec compliance

02Debugging complex parallel execution logic within Fork branches

03Implementing new workflow task types or DSL extensions

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add lemline/lemline core-dev

For use in Claude.ai and ChatGPT

Download Skill