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permchain

Project description

permchain

Get started

pip install permchain

Usage

from permchain import InMemoryPubSubConnection, PubSub, Topic

topic_one = Topic("one")
chain_one = Topic.IN.subscribe() | (lambda x: x + 'b') | topic_one.publish()
chain_two = topic_one.subscribe() | (lambda x: x + 'c') | Topic.OUT.publish()

conn = InMemoryPubSubConnection()
pubsub = PubSub(processes=(chain_one, chain_two), connection=conn)

assert pubsub.invoke('a') == ['abc']

Check tests and examples for more examples.

Roadmap

  • Add initial retry support (pending changes in langchain)
  • Detect cycles (aka. infinite loops) and throw an error
    • Allow user to catch that error (by subcribing to an error topic?)
  • Replace Queue data structure with a Log data structure (this will enable checking the status of the readers, etc.)
  • Enable resuming PubSub from the "middle" of the computation
  • Add Redis-backed Connection implementation

Project details


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