Kamaelia docs : Kamaelia.Protocol.Framing.DataDeChunker


For examples and more explanations, see the module level docs.

class DataDeChunker(Axon.Component.component)

DataDeChunker([syncmessage]) -> new DataDeChunker component.

Synchronises to a stream of string data, delimited into chunks by a 'sync' sequence. Chunks are buffered until the next 'sync sequence is received and are then passed on.

Keyword arguments:

  • syncmessage -- string to use as 'sync' sequence (default="XXXXXXXXXXXXXXXXXXXXXXXX")


  • control : shutdown messages (producerFinished)
  • inbox : partial message chunk strings
  • flush : instructions to flush the internal buffer


  • outbox : dechunked message strings
  • signal : producerFinished shutdown messages

Methods defined here


You should be using the inbox/outbox interface, not these methods (except construction). This documentation is designed as a roadmap as to their functionalilty for maintainers and new component developers.

__init__(self[, syncmessage])

x.__init__(...) initializes x; see x.__class__.__doc__ for signature

decodeChunk(self, chunk)

unEscape and return the chunk, sans the 'sync' sequence prefix, or raise IncompleteChunk if the chunk isn't prefixed with the 'sync' sequence (can't guarantee the chunk is whole).


Main loop.


Returns non-zero if a message has been received on the "flush" inbox


Shutdown on producerFinished message arriving at "control" inbox.

unEscapeSyncMessage(self, message)

Returns message with escaped occurrences of the 'sync' message unescaped again.


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-- Automatic documentation generator, 05 Jun 2009 at 03:01:38 UTC/GMT

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