Part of lp.services
|Module||features||Feature flags for Twisted.|
|Module||gracefulshutdown||Utilities for graceful shutdown of Twisted services.|
|Module||loggingsupport||Integration between the normal Launchpad logging and Twisted's.|
|Module||plugincache||Build dropin.cache for all installed Twisted plugins.|
|Module||processmonitor||Helpers for running a child process and communicating things about it.|
|Module||task||Tools for managing long-running or difficult tasks with Twisted.|
|Package||tests||No package docstring; 6/6 modules documented|
|Module||xmlrpc||Support for XML-RPC stuff with Twisted.|
From the __init__.py module:
|Function||cancel_on_timeout||Cancel a Deferred if it doesn't fire before the timeout is up.|
|Function||extract_result||Extract the result from a fired deferred.|
|Function||gatherResults||Returns list with result of given Deferreds.|
|Function||no_traceback_failures||Decorator to return traceback-less Failures instead of raising errors.|
|Function||run_reactor||Run the reactor and return with the SIGCHLD handler unchanged.|
|Function||suppress_stderr||Deferred friendly decorator that suppresses output from a function.|
Returns list with result of given Deferreds. This differs from Twisted's `defer.gatherResults` in two ways. 1. It fires the actual first error that occurs, rather than wrapping it in a `defer.FirstError`. 2. All errors apart from the first are consumed. (i.e. `consumeErrors` is True.) :type deferredList: list of `defer.Deferred`s. :return: `defer.Deferred`.
It can happen that you have an API that returns Deferreds for compatibility with Twisted code, but is in fact synchronous, i.e. the Deferreds it returns have always fired by the time it returns. In this case, you can use this function to convert the result back into the usual form for a synchronous API, i.e. the result itself or a raised exception.
It would be very bad form to use this as some way of checking if a Deferred has fired.
|Parameters||d||The Deferred to cancel|
|timeout||The timeout in seconds|
|reactor||Override the default reactor (useful for tests).|
|Returns||The same deferred, d.|
This is useful for functions used as callbacks or errbacks for a Deferred. Traceback-less failures are much faster than the automatic Failures Deferred constructs internally.