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Flexible Logging
Abstract
OSSP l2 is a C library providing a very flexible and sophisticated Unix
logging facility. It is based on the model of arbitrary number of channels,
stacked together in a top-down data flow tree structure with filtering
channels in internal nodes and output channels on the leave nodes.
Channel trees can be either constructed manually through lower-level API
functions or all at once with a single API function controlled by a compact
syntactical description of the channel tree. For generating log messages a
printf-style formatting engine is provided which can be extended through
callback functions. The data flow inside the channel tree is controlled by
(eight fixed and nine custom) logging message severity levels which are
assigned to each individual channel.
Channels are implemented by channel handlers which can be even customer
supplied for creating own channels which seamlessly integrate into the
framework. For convenience reasons, OSSP l2 already ships with pre-implemented
filtering (noop, filter, prefix, buffer) and output (null, fd, file, pipe,
socket, syslog, smtp) channels which already cover mostly all use cases of
logging.
Authors
Ralf S. Engelschall <rse@engelschall.com>
Thomas Lotterer <thomas@lotterer.net>
Michael Schloh v. Bennewitz <michael.schloh@cw.com>
Status
| Stable Version: | none | (none) |
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| UnstableVersion: | 0.9.13 | (08-Jun-2007) | [Bug Reporting] |
| Genesis: | |
| Finished: |
95% |
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Source
Donation
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OSSP l2 is a sub-project of OSSP and hence a fully
non-profit Open Source Software
effort. The development on OSSP projects
like OSSP l2 is supported by the contributions and sponsoring of individuals
and companies. You can support OSSP l2 and the
other OSSP projects yourself by contributing source fixes and
enhancements or by donating
money.
To reward the efforts on OSSP l2, just
press the button to the right to perform a secure PayPal online money transaction to the
OSSP project. Credit will be given to you on the OSSP Sponsors page once your donation
was received.
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