summaryrefslogtreecommitdiffstats
path: root/lib/bb/event.py
blob: 32df77978634db820823ed6282843ee4638dddf4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
"""
BitBake 'Event' implementation

Classes and functions for manipulating 'events' in the
BitBake build tools.
"""

# Copyright (C) 2003, 2004  Chris Larson
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

import os, sys
import warnings
try:
    import cPickle as pickle
except ImportError:
    import pickle
import logging
import atexit
import traceback
import bb.utils
import bb.compat
import bb.exceptions

# This is the pid for which we should generate the event. This is set when
# the runqueue forks off.
worker_pid = 0
worker_fire = None

logger = logging.getLogger('BitBake.Event')

class Event(object):
    """Base class for events"""

    def __init__(self):
        self.pid = worker_pid

Registered        = 10
AlreadyRegistered = 14

def get_class_handlers():
    return _handlers

def set_class_handlers(h):
    _handlers = h

def clean_class_handlers():
    return bb.compat.OrderedDict()

# Internal
_handlers = clean_class_handlers()
_ui_handlers = {}
_ui_logfilters = {}
_ui_handler_seq = 0
_event_handler_map = {}
_catchall_handlers = {}

def execute_handler(name, handler, event, d):
    event.data = d
    try:
        ret = handler(event)
    except (bb.parse.SkipRecipe, bb.BBHandledException):
        raise
    except Exception:
        etype, value, tb = sys.exc_info()
        logger.error("Execution of event handler '%s' failed" % name,
                        exc_info=(etype, value, tb.tb_next))
        raise
    except SystemExit as exc:
        if exc.code != 0:
            logger.error("Execution of event handler '%s' failed" % name)
        raise
    finally:
        del event.data

def fire_class_handlers(event, d):
    if isinstance(event, logging.LogRecord):
        return

    eid = str(event.__class__)[8:-2]
    evt_hmap = _event_handler_map.get(eid, {})
    for name, handler in _handlers.iteritems():
        if name in _catchall_handlers or name in evt_hmap:
            execute_handler(name, handler, event, d)

ui_queue = []
@atexit.register
def print_ui_queue():
    """If we're exiting before a UI has been spawned, display any queued
    LogRecords to the console."""
    logger = logging.getLogger("BitBake")
    if not _ui_handlers:
        from bb.msg import BBLogFormatter
        console = logging.StreamHandler(sys.stdout)
        console.setFormatter(BBLogFormatter("%(levelname)s: %(message)s"))
        logger.handlers = [console]

        # First check to see if we have any proper messages
        msgprint = False
        for event in ui_queue:
            if isinstance(event, logging.LogRecord):
                if event.levelno > logging.DEBUG:
                    logger.handle(event)
                    msgprint = True
        if msgprint:
            return

        # Nope, so just print all of the messages we have (including debug messages)
        for event in ui_queue:
            if isinstance(event, logging.LogRecord):
                logger.handle(event)

def fire_ui_handlers(event, d):
    if not _ui_handlers:
        # No UI handlers registered yet, queue up the messages
        ui_queue.append(event)
        return

    errors = []
    for h in _ui_handlers:
        #print "Sending event %s" % event
        try:
             if not _ui_logfilters[h].filter(event):
                 continue
             # We use pickle here since it better handles object instances
             # which xmlrpc's marshaller does not. Events *must* be serializable
             # by pickle.
             if hasattr(_ui_handlers[h].event, "sendpickle"):
                _ui_handlers[h].event.sendpickle((pickle.dumps(event)))
             else:
                _ui_handlers[h].event.send(event)
        except:
            errors.append(h)
    for h in errors:
        del _ui_handlers[h]

def fire(event, d):
    """Fire off an Event"""

    # We can fire class handlers in the worker process context and this is
    # desired so they get the task based datastore.
    # UI handlers need to be fired in the server context so we defer this. They
    # don't have a datastore so the datastore context isn't a problem.

    fire_class_handlers(event, d)
    if worker_fire:
        worker_fire(event, d)
    else:
        fire_ui_handlers(event, d)

def fire_from_worker(event, d):
    fire_ui_handlers(event, d)

noop = lambda _: None
def register(name, handler, mask=[]):
    """Register an Event handler"""

    # already registered
    if name in _handlers:
        return AlreadyRegistered

    if handler is not None:
        # handle string containing python code
        if isinstance(handler, basestring):
            tmp = "def %s(e):\n%s" % (name, handler)
            try:
                code = compile(tmp, "%s(e)" % name, "exec")
            except SyntaxError:
                logger.error("Unable to register event handler '%s':\n%s", name,
                             ''.join(traceback.format_exc(limit=0)))
                _handlers[name] = noop
                return
            env = {}
            bb.utils.better_exec(code, env)
            func = bb.utils.better_eval(name, env)
            _handlers[name] = func
        else:
            _handlers[name] = handler

        if not mask or '*' in mask:
            _catchall_handlers[name] = True
        else:
            for m in mask:
                if _event_handler_map.get(m, None) is None:
                    _event_handler_map[m] = {}
                _event_handler_map[m][name] = True

        return Registered

def remove(name, handler):
    """Remove an Event handler"""
    _handlers.pop(name)

def register_UIHhandler(handler):
    bb.event._ui_handler_seq = bb.event._ui_handler_seq + 1
    _ui_handlers[_ui_handler_seq] = handler
    level, debug_domains = bb.msg.constructLogOptions()
    _ui_logfilters[_ui_handler_seq] = UIEventFilter(level, debug_domains)
    return _ui_handler_seq

def unregister_UIHhandler(handlerNum):
    if handlerNum in _ui_handlers:
        del _ui_handlers[handlerNum]
    return

# Class to allow filtering of events and specific filtering of LogRecords *before* we put them over the IPC
class UIEventFilter(object):
    def __init__(self, level, debug_domains):
        self.update(None, level, debug_domains)

    def update(self, eventmask, level, debug_domains):
        self.eventmask = eventmask
        self.stdlevel = level
        self.debug_domains = debug_domains

    def filter(self, event):
        if isinstance(event, logging.LogRecord):
            if event.levelno >= self.stdlevel:
                return True
            if event.name in self.debug_domains and event.levelno >= self.debug_domains[event.name]:
                return True
            return False
        eid = str(event.__class__)[8:-2]
        if self.eventmask and eid not in self.eventmask:
            return False
        return True

def set_UIHmask(handlerNum, level, debug_domains, mask):
    if not handlerNum in _ui_handlers:
        return False
    if '*' in mask:
        _ui_logfilters[handlerNum].update(None, level, debug_domains)
    else:
        _ui_logfilters[handlerNum].update(mask, level, debug_domains)
    return True

def getName(e):
    """Returns the name of a class or class instance"""
    if getattr(e, "__name__", None) == None:
        return e.__class__.__name__
    else:
        return e.__name__

class OperationStarted(Event):
    """An operation has begun"""
    def __init__(self, msg = "Operation Started"):
        Event.__init__(self)
        self.msg = msg

class OperationCompleted(Event):
    """An operation has completed"""
    def __init__(self, total, msg = "Operation Completed"):
        Event.__init__(self)
        self.total = total
        self.msg = msg

class OperationProgress(Event):
    """An operation is in progress"""
    def __init__(self, current, total, msg = "Operation in Progress"):
        Event.__init__(self)
        self.current = current
        self.total = total
        self.msg = msg + ": %s/%s" % (current, total);

class ConfigParsed(Event):
    """Configuration Parsing Complete"""

class RecipeEvent(Event):
    def __init__(self, fn):
        self.fn = fn
        Event.__init__(self)

class RecipePreFinalise(RecipeEvent):
    """ Recipe Parsing Complete but not yet finialised"""

class RecipeParsed(RecipeEvent):
    """ Recipe Parsing Complete """

class StampUpdate(Event):
    """Trigger for any adjustment of the stamp files to happen"""

    def __init__(self, targets, stampfns):
        self._targets = targets
        self._stampfns = stampfns
        Event.__init__(self)

    def getStampPrefix(self):
        return self._stampfns

    def getTargets(self):
        return self._targets

    stampPrefix = property(getStampPrefix)
    targets = property(getTargets)

class BuildBase(Event):
    """Base class for bbmake run events"""

    def __init__(self, n, p, failures = 0):
        self._name = n
        self._pkgs = p
        Event.__init__(self)
        self._failures = failures

    def getPkgs(self):
        return self._pkgs

    def setPkgs(self, pkgs):
        self._pkgs = pkgs

    def getName(self):
        return self._name

    def setName(self, name):
        self._name = name

    def getCfg(self):
        return self.data

    def setCfg(self, cfg):
        self.data = cfg

    def getFailures(self):
        """
        Return the number of failed packages
        """
        return self._failures

    pkgs = property(getPkgs, setPkgs, None, "pkgs property")
    name = property(getName, setName, None, "name property")
    cfg = property(getCfg, setCfg, None, "cfg property")





class BuildStarted(BuildBase, OperationStarted):
    """bbmake build run started"""
    def __init__(self, n, p, failures = 0):
        OperationStarted.__init__(self, "Building Started")
        BuildBase.__init__(self, n, p, failures)

class BuildCompleted(BuildBase, OperationCompleted):
    """bbmake build run completed"""
    def __init__(self, total, n, p, failures = 0):
        if not failures:
            OperationCompleted.__init__(self, total, "Building Succeeded")
        else:
            OperationCompleted.__init__(self, total, "Building Failed")
        BuildBase.__init__(self, n, p, failures)

class DiskFull(Event):
    """Disk full case build aborted"""
    def __init__(self, dev, type, freespace, mountpoint):
        Event.__init__(self)
        self._dev = dev
        self._type = type
        self._free = freespace
        self._mountpoint = mountpoint

class NoProvider(Event):
    """No Provider for an Event"""

    def __init__(self, item, runtime=False, dependees=None, reasons=[], close_matches=[]):
        Event.__init__(self)
        self._item = item
        self._runtime = runtime
        self._dependees = dependees
        self._reasons = reasons
        self._close_matches = close_matches

    def getItem(self):
        return self._item

    def isRuntime(self):
        return self._runtime

class MultipleProviders(Event):
    """Multiple Providers"""

    def  __init__(self, item, candidates, runtime = False):
        Event.__init__(self)
        self._item = item
        self._candidates = candidates
        self._is_runtime = runtime

    def isRuntime(self):
        """
        Is this a runtime issue?
        """
        return self._is_runtime

    def getItem(self):
        """
        The name for the to be build item
        """
        return self._item

    def getCandidates(self):
        """
        Get the possible Candidates for a PROVIDER.
        """
        return self._candidates

class ParseStarted(OperationStarted):
    """Recipe parsing for the runqueue has begun"""
    def __init__(self, total):
        OperationStarted.__init__(self, "Recipe parsing Started")
        self.total = total

class ParseCompleted(OperationCompleted):
    """Recipe parsing for the runqueue has completed"""
    def __init__(self, cached, parsed, skipped, masked, virtuals, errors, total):
        OperationCompleted.__init__(self, total, "Recipe parsing Completed")
        self.cached = cached
        self.parsed = parsed
        self.skipped = skipped
        self.virtuals = virtuals
        self.masked = masked
        self.errors = errors
        self.sofar = cached + parsed

class ParseProgress(OperationProgress):
    """Recipe parsing progress"""
    def __init__(self, current, total):
        OperationProgress.__init__(self, current, total, "Recipe parsing")


class CacheLoadStarted(OperationStarted):
    """Loading of the dependency cache has begun"""
    def __init__(self, total):
        OperationStarted.__init__(self, "Loading cache Started")
        self.total = total

class CacheLoadProgress(OperationProgress):
    """Cache loading progress"""
    def __init__(self, current, total):
        OperationProgress.__init__(self, current, total, "Loading cache")

class CacheLoadCompleted(OperationCompleted):
    """Cache loading is complete"""
    def __init__(self, total, num_entries):
        OperationCompleted.__init__(self, total, "Loading cache Completed")
        self.num_entries = num_entries

class TreeDataPreparationStarted(OperationStarted):
    """Tree data preparation started"""
    def __init__(self):
        OperationStarted.__init__(self, "Preparing tree data Started")

class TreeDataPreparationProgress(OperationProgress):
    """Tree data preparation is in progress"""
    def __init__(self, current, total):
        OperationProgress.__init__(self, current, total, "Preparing tree data")

class TreeDataPreparationCompleted(OperationCompleted):
    """Tree data preparation completed"""
    def __init__(self, total):
        OperationCompleted.__init__(self, total, "Preparing tree data Completed")

class DepTreeGenerated(Event):
    """
    Event when a dependency tree has been generated
    """

    def __init__(self, depgraph):
        Event.__init__(self)
        self._depgraph = depgraph

class TargetsTreeGenerated(Event):
    """
    Event when a set of buildable targets has been generated
    """
    def __init__(self, model):
        Event.__init__(self)
        self._model = model

class FilesMatchingFound(Event):
    """
    Event when a list of files matching the supplied pattern has
    been generated
    """
    def __init__(self, pattern, matches):
        Event.__init__(self)
        self._pattern = pattern
        self._matches = matches

class CoreBaseFilesFound(Event):
    """
    Event when a list of appropriate config files has been generated
    """
    def __init__(self, paths):
        Event.__init__(self)
        self._paths = paths

class ConfigFilesFound(Event):
    """
    Event when a list of appropriate config files has been generated
    """
    def __init__(self, variable, values):
        Event.__init__(self)
        self._variable = variable
        self._values = values

class ConfigFilePathFound(Event):
    """
    Event when a path for a config file has been found
    """
    def __init__(self, path):
        Event.__init__(self)
        self._path = path

class MsgBase(Event):
    """Base class for messages"""

    def __init__(self, msg):
        self._message = msg
        Event.__init__(self)

class MsgDebug(MsgBase):
    """Debug Message"""

class MsgNote(MsgBase):
    """Note Message"""

class MsgWarn(MsgBase):
    """Warning Message"""

class MsgError(MsgBase):
    """Error Message"""

class MsgFatal(MsgBase):
    """Fatal Message"""

class MsgPlain(MsgBase):
    """General output"""

class LogExecTTY(Event):
    """Send event containing program to spawn on tty of the logger"""
    def __init__(self, msg, prog, sleep_delay, retries):
        Event.__init__(self)
        self.msg = msg
        self.prog = prog
        self.sleep_delay = sleep_delay
        self.retries = retries

class LogHandler(logging.Handler):
    """Dispatch logging messages as bitbake events"""

    def emit(self, record):
        if record.exc_info:
            etype, value, tb = record.exc_info
            if hasattr(tb, 'tb_next'):
                tb = list(bb.exceptions.extract_traceback(tb, context=3))
            record.bb_exc_info = (etype, value, tb)
            record.exc_info = None
        fire(record, None)

    def filter(self, record):
        record.taskpid = worker_pid
        return True

class RequestPackageInfo(Event):
    """
    Event to request package information
    """

class PackageInfo(Event):
    """
    Package information for GUI
    """
    def __init__(self, pkginfolist):
        Event.__init__(self)
        self._pkginfolist = pkginfolist

class MetadataEvent(Event):
    """
    Generic event that target for OE-Core classes
    to report information during asynchrous execution
    """
    def __init__(self, eventtype, eventdata):
        Event.__init__(self)
        self.type = eventtype
        self._localdata = eventdata

class SanityCheck(Event):
    """
    Event to run sanity checks, either raise errors or generate events as return status.
    """
    def __init__(self, generateevents = True):
        Event.__init__(self)
        self.generateevents = generateevents

class SanityCheckPassed(Event):
    """
    Event to indicate sanity check has passed
    """

class SanityCheckFailed(Event):
    """
    Event to indicate sanity check has failed
    """
    def __init__(self, msg, network_error=False):
        Event.__init__(self)
        self._msg = msg
        self._network_error = network_error

class NetworkTest(Event):
    """
    Event to run network connectivity tests, either raise errors or generate events as return status.
    """
    def __init__(self, generateevents = True):
        Event.__init__(self)
        self.generateevents = generateevents

class NetworkTestPassed(Event):
    """
    Event to indicate network test has passed
    """

class NetworkTestFailed(Event):
    """
    Event to indicate network test has failed
    """