moat-lib-stream 0.3.3

Stream infrastructure for MoaT applications

Stream Infrastructure

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This module provides base classes for handling data streams in a structured manner.

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Overview

This package implements infrastructure for building layered communication stacks:

• BaseMsg - Message-based communication (Python objects)
• BaseBlk - Block-based communication (delimited bytestrings)
• BaseBuf - Buffer-based communication (undelimited bytestreams)

Layered Communication Stacks

Build communication stacks by layering protocols:

from moat.lib.stream import StackedBlk

class Compression(StackedBlk):
    async def snd(self, blk):
        compressed = compress(blk)
        await self.s.send(compressed)

    async def rcv(self):
        blk = await self.s.recv()
        return decompress(blk)

# Stack layers
link = SerialLink(cfg)  # BaseBuf
link = Packetizer(link, cfg)  # StackedBlk
link = Compressor(link, cfg)  # StackedBlk
link = Codec(link, cfg)  # StackedMsg
async with link:
    await link.send({"data": "hello"})

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License

This project is part of the MoaT ecosystem and is licensed under the same terms.