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Python port of CoalescingRingBuffer from LMAXCollections

Project Description

coalringbuf is Python port of CoalescingRingBuffer from LMAXCollections. coalringbuf works with:

  • CPython 2.x >= 2.5, 3.x >= 3.2
  • PyPy 1.9+

Supported platforms: platform independent.

Status

It’s usable and it passes port of original test suite. It’s currently based on LMAXCollections 1.1.0.

Usage

This port mimics original CoalescingRingBuffer API as closely as possible, however it was modified to make it more Pythonic.

Example intepreter session:

>>> from coalringbuf import CoalescingRingBuffer
>>> buffer = CoalescingRingBuffer(3)
>>> buffer.capacity
4
>>> buffer.empty
True
>>> buffer.offer('something')
True
>>> buffer.empty
False
>>> buffer.offer('something else')
True
>>> buffer.offer('quack')
True
>>> buffer.offer('id', 'value')
True
>>> buffer.size
4
>>> buffer.full
True
>>> buffer.offer('id', 'this will overwrite "value"')
True
>>> buffer.size
4
>>> buffer.offer('this will be rejected')
False
>>> buffer.size
4
>>> bucket = []
>>> buffer.poll(bucket)
4
>>> bucket
['something', 'something else', 'quack', 'this will overwrite "value"']
>>> buffer.empty
True

TODO

  • implement performance tests
  • provide more efficient bucket class if needed
Release History

Release History

This version
History Node

0.1.0

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
coalringbuf-0.1.0.tar.gz (3.6 kB) Copy SHA256 Checksum SHA256 Source Jul 24, 2013

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