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Translate twisted error logs into OOPS error reports.

Project Description
**********************************************************
python-oops-twisted: Error report integration with twisted
**********************************************************

Copyright (c) 2011, Canonical Ltd

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, version 3 only.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
GNU Lesser General Public License version 3 (see the file LICENSE).

The oops_twisted package provides integration glue between logged twisted
errors (via the twisted.log api) and the oops error reporting system
(http://pypi.python.org/pypi/oops).

Dependencies
============

* Python 2.6+

* oops (http://pypi.python.org/pypi/oops)

* Twisted

Testing Dependencies
====================

* subunit (http://pypi.python.org/pypi/python-subunit) (optional)

* testtools (http://pypi.python.org/pypi/testtools)

Usage
=====

OOPS Configuration
++++++++++++++++++

* Setup your configuration::

>>> from oops_twisted import Config
>>> config = Config()

Note that you will probably want at least one publisher, or your reports will
be silently discarded.

* When adding publishers, either wrap 'normal' OOPS publishers in deferToThread
or similar, or use native Twisted publishers. For instance::

>>> from functools import partial
>>> config.publishers.append(partial(deferToThread, blocking_publisher))

A helper 'defer_publisher' is supplied to do this for your convenience.

Catching log.err calls
++++++++++++++++++++++

* create an OOPS log observer::

>>> from oops_twisted import OOPSObserver
>>> observer = OOPSObserver(config)

* And enable it::

>>> from twisted.log import addObserver
>>> addObserver(observer)

* This is typically used to supplement regular logging, e.g. you might
initialize normal logging to a file first::

>>> twisted.log.startLogging(logfile)

The OOPSObserver will discard all non-error log messages, and convert error log
messages into OOPSes using the oops config.

Optionally, you can provide OOPSObserver with a second observer to delegate
too. Any event that is not converted into an OOPS is passed through unaltered.
Events that are converted to OOPSes have a new event second to the second
observer which provides the OOPS id and the failure name and value::

>>> observer = OOPSObserver(config, twisted.log.PythonLoggingObserver().emit)

Extending WSGI
++++++++++++++

oops_twisted supports an extended WSGI contract where if the returned iterator
for the body implements t.w.i.IBodyProducer, then the iterator that
oops_twisted's WSGI wrapper returns will also implement IBodyProducer. This is
useful with a customised Twisted WSGI resource that runs IBodyProducer
iterators in the IO loop, rather than using up a threadpool thread. To use this
pass tracker=oops_twisted.wsgi.body_producer_tracker when calling
oops_wsgi.make_app. Note that a non-twisted OOPS Config is assumed because
the WSGI protocol is synchronous: be sure to provide the oops_wsgi make_app
with a non-twisted OOPS Config.

For more information see pydoc oops_twisted.

Installation
============

Either run setup.py in an environment with all the dependencies available, or
add the working directory to your PYTHONPATH.

Development
===========

Upstream development takes place at https://launchpad.net/python-oops-twisted.
To setup a working area for development, if the dependencies are not
immediately available, you can use ./bootstrap.py to create bin/buildout, then
bin/py to get a python interpreter with the dependencies available.

To run the tests use the runner of your choice, the test suite is
oops_twisted.tests.test_suite.

For instance::

$ bin/py -m testtools.run oops_twisted.tests.test_suite
Release History

Release History

This version
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0.0.6

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0.0.5

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0.0.4

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0.0.3

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0.0.2

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0.0.1

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