276 lines
6.6 KiB
Python
276 lines
6.6 KiB
Python
# ex:ts=4:sw=4:sts=4:et
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# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
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"""
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BitBake 'Event' implementation
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Classes and functions for manipulating 'events' in the
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BitBake build tools.
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"""
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# Copyright (C) 2003, 2004 Chris Larson
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2 as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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import os, re
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import bb.utils
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import pickle
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# This is the pid for which we should generate the event. This is set when
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# the runqueue forks off.
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worker_pid = 0
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worker_pipe = None
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class Event:
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"""Base class for events"""
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def __init__(self):
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self.pid = worker_pid
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NotHandled = 0
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Handled = 1
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Registered = 10
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AlreadyRegistered = 14
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# Internal
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_handlers = {}
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_ui_handlers = {}
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_ui_handler_seq = 0
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def fire(event, d):
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"""Fire off an Event"""
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if worker_pid != 0:
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worker_fire(event, d)
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return
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for handler in _handlers:
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h = _handlers[handler]
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event.data = d
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if type(h).__name__ == "code":
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exec(h)
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tmpHandler(event)
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else:
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h(event)
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del event.data
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errors = []
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for h in _ui_handlers:
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#print "Sending event %s" % event
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try:
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# We use pickle here since it better handles object instances
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# which xmlrpc's marshaller does not. Events *must* be serializable
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# by pickle.
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_ui_handlers[h].event.send((pickle.dumps(event)))
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except:
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errors.append(h)
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for h in errors:
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del _ui_handlers[h]
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def worker_fire(event, d):
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data = "<event>" + pickle.dumps(event) + "</event>"
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if os.write(worker_pipe, data) != len (data):
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print "Error sending event to server (short write)"
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def fire_from_worker(event, d):
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if not event.startswith("<event>") or not event.endswith("</event>"):
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print "Error, not an event"
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return
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event = pickle.loads(event[7:-8])
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bb.event.fire(event, d)
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def register(name, handler):
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"""Register an Event handler"""
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# already registered
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if name in _handlers:
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return AlreadyRegistered
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if handler is not None:
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# handle string containing python code
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if type(handler).__name__ == "str":
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tmp = "def tmpHandler(e):\n%s" % handler
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comp = bb.utils.better_compile(tmp, "tmpHandler(e)", "bb.event._registerCode")
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_handlers[name] = comp
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else:
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_handlers[name] = handler
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return Registered
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def remove(name, handler):
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"""Remove an Event handler"""
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_handlers.pop(name)
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def register_UIHhandler(handler):
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bb.event._ui_handler_seq = bb.event._ui_handler_seq + 1
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_ui_handlers[_ui_handler_seq] = handler
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return _ui_handler_seq
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def unregister_UIHhandler(handlerNum):
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if handlerNum in _ui_handlers:
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del _ui_handlers[handlerNum]
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return
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def getName(e):
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"""Returns the name of a class or class instance"""
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if getattr(e, "__name__", None) == None:
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return e.__class__.__name__
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else:
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return e.__name__
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class ConfigParsed(Event):
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"""Configuration Parsing Complete"""
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class RecipeParsed(Event):
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""" Recipe Parsing Complete """
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def __init__(self, fn):
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self.fn = fn
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Event.__init__(self)
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class StampUpdate(Event):
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"""Trigger for any adjustment of the stamp files to happen"""
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def __init__(self, targets, stampfns):
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self._targets = targets
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self._stampfns = stampfns
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Event.__init__(self)
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def getStampPrefix(self):
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return self._stampfns
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def getTargets(self):
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return self._targets
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stampPrefix = property(getStampPrefix)
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targets = property(getTargets)
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class BuildBase(Event):
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"""Base class for bbmake run events"""
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def __init__(self, n, p, failures = 0):
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self._name = n
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self._pkgs = p
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Event.__init__(self)
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self._failures = failures
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def getPkgs(self):
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return self._pkgs
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def setPkgs(self, pkgs):
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self._pkgs = pkgs
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def getName(self):
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return self._name
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def setName(self, name):
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self._name = name
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def getCfg(self):
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return self.data
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def setCfg(self, cfg):
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self.data = cfg
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def getFailures(self):
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"""
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Return the number of failed packages
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"""
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return self._failures
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pkgs = property(getPkgs, setPkgs, None, "pkgs property")
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name = property(getName, setName, None, "name property")
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cfg = property(getCfg, setCfg, None, "cfg property")
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class BuildStarted(BuildBase):
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"""bbmake build run started"""
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class BuildCompleted(BuildBase):
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"""bbmake build run completed"""
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class NoProvider(Event):
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"""No Provider for an Event"""
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def __init__(self, item, runtime=False):
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Event.__init__(self)
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self._item = item
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self._runtime = runtime
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def getItem(self):
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return self._item
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def isRuntime(self):
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return self._runtime
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class MultipleProviders(Event):
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"""Multiple Providers"""
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def __init__(self, item, candidates, runtime = False):
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Event.__init__(self)
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self._item = item
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self._candidates = candidates
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self._is_runtime = runtime
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def isRuntime(self):
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"""
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Is this a runtime issue?
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"""
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return self._is_runtime
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def getItem(self):
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"""
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The name for the to be build item
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"""
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return self._item
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def getCandidates(self):
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"""
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Get the possible Candidates for a PROVIDER.
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"""
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return self._candidates
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class ParseProgress(Event):
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"""
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Parsing Progress Event
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"""
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def __init__(self, cached, parsed, skipped, masked, virtuals, errors, total):
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Event.__init__(self)
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self.cached = cached
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self.parsed = parsed
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self.skipped = skipped
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self.virtuals = virtuals
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self.masked = masked
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self.errors = errors
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self.sofar = cached + parsed
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self.total = total
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class DepTreeGenerated(Event):
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"""
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Event when a dependency tree has been generated
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"""
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def __init__(self, depgraph):
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Event.__init__(self)
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self._depgraph = depgraph
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