pipeteer 0.3.9

Simple, explicit durable execution framework.

Pipeteer

Simple, explicit durable execution framework.

Read the docs

Why Pipeteer?

Use pipeteer if you need...

• Persistance: your app can stop or crash and resume at any time without losing progress
• Observability: you can see the state of your app at any time, and modify it programmatically at runtime
• Exactly-once semantics: your app can be stopped and resumed without dropping or duplicating work
• Fault tolerance: if a task fails, it'll keep working on other tasks and retry it later
• Explicit data: pipeteer's high level API is a very thin abstraction over explicit communication using queues

Proof of Concept

from pipeteer import activity, workflow, Context, WorkflowContext

@activity()
async def double(x: int) -> int:
  return 2*x

@activity()
async def inc(x: int) -> int:
  return x + 1

@workflow([double, inc])
async def linear(x: int, ctx: WorkflowContext) -> int:
  x2 = await ctx.call(double, x)
  return await ctx.call(inc, x2)

if __name__ == '__main__':
  ctx = Context.sqlite('workflow.db')
  linear.run_all(ctx)