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Append {#720}

This component accepts data from it's inbox "inbox" and appends the data to the end of the given file.

It takes four arguments, with these default values:

filename = None
forwarder = True
blat_file = False
hold_open = True

filename should be clear. If you don't supply this, it'll break.

forwarder - this component defaults to passing on a copy of the data it's appending to the file. This makes this component useful for dropping in between other components for logging/debugging what's going on.

blat_file - if this is true, the file is zapped before we start appending data.

hold_open - This determines if the file is closed between instances of data arriving.


class Append(Axon.Component.component)

Appender() -> component that incrementally append data to the end of a file (think logging)

Uses the following keyword argyments:

* filename - File to append to (required)
* forwarder - copy to outbox (default: True)
* blat_file - write empty file (default: False)
* hold_open - keep file open (default: True)


  • control : Send any message here to shut this component down
  • inbox : data to append to the end of the file.


  • outbox : a copy of the message is forwarded here
  • signal : passes on the message used to shutdown the component

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, **argd)

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



writeChunk(self, chunk)


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