summaryrefslogtreecommitdiffstats
path: root/bitbake/lib/bb/command.py
blob: 378f389b3acb93141537e1202e670bd301250fc1 (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
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
"""
BitBake 'Command' module

Provide an interface to interact with the bitbake server through 'commands'
"""

# Copyright (C) 2006-2007  Richard Purdie
#
# SPDX-License-Identifier: GPL-2.0-only
#

"""
The bitbake server takes 'commands' from its UI/commandline.
Commands are either synchronous or asynchronous.
Async commands return data to the client in the form of events.
Sync commands must only return data through the function return value
and must not trigger events, directly or indirectly.
Commands are queued in a CommandQueue
"""

from collections import OrderedDict, defaultdict

import bb.event
import bb.cooker
import bb.remotedata

class DataStoreConnectionHandle(object):
    def __init__(self, dsindex=0):
        self.dsindex = dsindex

class CommandCompleted(bb.event.Event):
    pass

class CommandExit(bb.event.Event):
    def  __init__(self, exitcode):
        bb.event.Event.__init__(self)
        self.exitcode = int(exitcode)

class CommandFailed(CommandExit):
    def __init__(self, message):
        self.error = message
        CommandExit.__init__(self, 1)
    def __str__(self):
        return "Command execution failed: %s" % self.error

class CommandError(Exception):
    pass

class Command:
    """
    A queue of asynchronous commands for bitbake
    """
    def __init__(self, cooker):
        self.cooker = cooker
        self.cmds_sync = CommandsSync()
        self.cmds_async = CommandsAsync()
        self.remotedatastores = bb.remotedata.RemoteDatastores(cooker)

        # FIXME Add lock for this
        self.currentAsyncCommand = None

    def runCommand(self, commandline, ro_only = False):
        command = commandline.pop(0)
        if hasattr(CommandsSync, command):
            # Can run synchronous commands straight away
            command_method = getattr(self.cmds_sync, command)
            if ro_only:
                if not hasattr(command_method, 'readonly') or False == getattr(command_method, 'readonly'):
                    return None, "Not able to execute not readonly commands in readonly mode"
            try:
                self.cooker.process_inotify_updates()
                if getattr(command_method, 'needconfig', True):
                    self.cooker.updateCacheSync()
                result = command_method(self, commandline)
            except CommandError as exc:
                return None, exc.args[0]
            except (Exception, SystemExit):
                import traceback
                return None, traceback.format_exc()
            else:
                return result, None
        if self.currentAsyncCommand is not None:
            return None, "Busy (%s in progress)" % self.currentAsyncCommand[0]
        if command not in CommandsAsync.__dict__:
            return None, "No such command"
        self.currentAsyncCommand = (command, commandline)
        self.cooker.configuration.server_register_idlecallback(self.cooker.runCommands, self.cooker)
        return True, None

    def runAsyncCommand(self):
        try:
            self.cooker.process_inotify_updates()
            if self.cooker.state in (bb.cooker.state.error, bb.cooker.state.shutdown, bb.cooker.state.forceshutdown):
                # updateCache will trigger a shutdown of the parser
                # and then raise BBHandledException triggering an exit
                self.cooker.updateCache()
                return False
            if self.currentAsyncCommand is not None:
                (command, options) = self.currentAsyncCommand
                commandmethod = getattr(CommandsAsync, command)
                needcache = getattr( commandmethod, "needcache" )
                if needcache and self.cooker.state != bb.cooker.state.running:
                    self.cooker.updateCache()
                    return True
                else:
                    commandmethod(self.cmds_async, self, options)
                    return False
            else:
                return False
        except KeyboardInterrupt as exc:
            self.finishAsyncCommand("Interrupted")
            return False
        except SystemExit as exc:
            arg = exc.args[0]
            if isinstance(arg, str):
                self.finishAsyncCommand(arg)
            else:
                self.finishAsyncCommand("Exited with %s" % arg)
            return False
        except Exception as exc:
            import traceback
            if isinstance(exc, bb.BBHandledException):
                self.finishAsyncCommand("")
            else:
                self.finishAsyncCommand(traceback.format_exc())
            return False

    def finishAsyncCommand(self, msg=None, code=None):
        if msg or msg == "":
            bb.event.fire(CommandFailed(msg), self.cooker.data)
        elif code:
            bb.event.fire(CommandExit(code), self.cooker.data)
        else:
            bb.event.fire(CommandCompleted(), self.cooker.data)
        self.currentAsyncCommand = None
        self.cooker.finishcommand()

    def reset(self):
        self.remotedatastores = bb.remotedata.RemoteDatastores(self.cooker)

def split_mc_pn(pn):
    if pn.startswith("multiconfig:"):
        _, mc, pn = pn.split(":", 2)
        return (mc, pn)
    return ('', pn)

class CommandsSync:
    """
    A class of synchronous commands
    These should run quickly so as not to hurt interactive performance.
    These must not influence any running synchronous command.
    """

    def stateShutdown(self, command, params):
        """
        Trigger cooker 'shutdown' mode
        """
        command.cooker.shutdown(False)

    def stateForceShutdown(self, command, params):
        """
        Stop the cooker
        """
        command.cooker.shutdown(True)

    def getAllKeysWithFlags(self, command, params):
        """
        Returns a dump of the global state. Call with
        variable flags to be retrieved as params.
        """
        flaglist = params[0]
        return command.cooker.getAllKeysWithFlags(flaglist)
    getAllKeysWithFlags.readonly = True

    def getVariable(self, command, params):
        """
        Read the value of a variable from data
        """
        varname = params[0]
        expand = True
        if len(params) > 1:
            expand = (params[1] == "True")

        return command.cooker.data.getVar(varname, expand)
    getVariable.readonly = True

    def setVariable(self, command, params):
        """
        Set the value of variable in data
        """
        varname = params[0]
        value = str(params[1])
        command.cooker.extraconfigdata[varname] = value
        command.cooker.data.setVar(varname, value)

    def getSetVariable(self, command, params):
        """
        Read the value of a variable from data and set it into the datastore
        which effectively expands and locks the value.
        """
        varname = params[0]
        result = self.getVariable(command, params)
        command.cooker.data.setVar(varname, result)
        return result

    def setConfig(self, command, params):
        """
        Set the value of variable in configuration
        """
        varname = params[0]
        value = str(params[1])
        setattr(command.cooker.configuration, varname, value)

    def enableDataTracking(self, command, params):
        """
        Enable history tracking for variables
        """
        command.cooker.enableDataTracking()

    def disableDataTracking(self, command, params):
        """
        Disable history tracking for variables
        """
        command.cooker.disableDataTracking()

    def setPrePostConfFiles(self, command, params):
        prefiles = params[0].split()
        postfiles = params[1].split()
        command.cooker.configuration.prefile = prefiles
        command.cooker.configuration.postfile = postfiles
    setPrePostConfFiles.needconfig = False

    def matchFile(self, command, params):
        fMatch = params[0]
        return command.cooker.matchFile(fMatch)
    matchFile.needconfig = False

    def getUIHandlerNum(self, command, params):
        return bb.event.get_uihandler()
    getUIHandlerNum.needconfig = False
    getUIHandlerNum.readonly = True

    def setEventMask(self, command, params):
        handlerNum = params[0]
        llevel = params[1]
        debug_domains = params[2]
        mask = params[3]
        return bb.event.set_UIHmask(handlerNum, llevel, debug_domains, mask)
    setEventMask.needconfig = False
    setEventMask.readonly = True

    def setFeatures(self, command, params):
        """
        Set the cooker features to include the passed list of features
        """
        features = params[0]
        command.cooker.setFeatures(features)
    setFeatures.needconfig = False
    # although we change the internal state of the cooker, this is transparent since
    # we always take and leave the cooker in state.initial
    setFeatures.readonly = True

    def updateConfig(self, command, params):
        options = params[0]
        environment = params[1]
        cmdline = params[2]
        command.cooker.updateConfigOpts(options, environment, cmdline)
    updateConfig.needconfig = False

    def parseConfiguration(self, command, params):
        """Instruct bitbake to parse its configuration
        NOTE: it is only necessary to call this if you aren't calling any normal action
        (otherwise parsing is taken care of automatically)
        """
        command.cooker.parseConfiguration()
    parseConfiguration.needconfig = False

    def getLayerPriorities(self, command, params):
        command.cooker.parseConfiguration()
        ret = []
        # regex objects cannot be marshalled by xmlrpc
        for collection, pattern, regex, pri in command.cooker.bbfile_config_priorities:
            ret.append((collection, pattern, regex.pattern, pri))
        return ret
    getLayerPriorities.readonly = True

    def getRecipes(self, command, params):
        try:
            mc = params[0]
        except IndexError:
            mc = ''
        return list(command.cooker.recipecaches[mc].pkg_pn.items())
    getRecipes.readonly = True

    def getRecipeDepends(self, command, params):
        try:
            mc = params[0]
        except IndexError:
            mc = ''
        return list(command.cooker.recipecaches[mc].deps.items())
    getRecipeDepends.readonly = True

    def getRecipeVersions(self, command, params):
        try:
            mc = params[0]
        except IndexError:
            mc = ''
        return command.cooker.recipecaches[mc].pkg_pepvpr
    getRecipeVersions.readonly = True

    def getRecipeProvides(self, command, params):
        try:
            mc = params[0]
        except IndexError:
            mc = ''
        return command.cooker.recipecaches[mc].fn_provides
    getRecipeProvides.readonly = True

    def getRecipePackages(self, command, params):
        try:
            mc = params[0]
        except IndexError:
            mc = ''
        return command.cooker.recipecaches[mc].packages
    getRecipePackages.readonly = True

    def getRecipePackagesDynamic(self, command, params):
        try:
            mc = params[0]
        except IndexError:
            mc = ''
        return command.cooker.recipecaches[mc].packages_dynamic
    getRecipePackagesDynamic.readonly = True

    def getRProviders(self, command, params):
        try:
            mc = params[0]
        except IndexError:
            mc = ''
        return command.cooker.recipecaches[mc].rproviders
    getRProviders.readonly = True

    def getRuntimeDepends(self, command, params):
        ret = []
        try:
            mc = params[0]
        except IndexError:
            mc = ''
        rundeps = command.cooker.recipecaches[mc].rundeps
        for key, value in rundeps.items():
            if isinstance(value, defaultdict):
                value = dict(value)
            ret.append((key, value))
        return ret
    getRuntimeDepends.readonly = True

    def getRuntimeRecommends(self, command, params):
        ret = []
        try:
            mc = params[0]
        except IndexError:
            mc = ''
        runrecs = command.cooker.recipecaches[mc].runrecs
        for key, value in runrecs.items():
            if isinstance(value, defaultdict):
                value = dict(value)
            ret.append((key, value))
        return ret
    getRuntimeRecommends.readonly = True

    def getRecipeInherits(self, command, params):
        try:
            mc = params[0]
        except IndexError:
            mc = ''
        return command.cooker.recipecaches[mc].inherits
    getRecipeInherits.readonly = True

    def getBbFilePriority(self, command, params):
        try:
            mc = params[0]
        except IndexError:
            mc = ''
        return command.cooker.recipecaches[mc].bbfile_priority
    getBbFilePriority.readonly = True

    def getDefaultPreference(self, command, params):
        try:
            mc = params[0]
        except IndexError:
            mc = ''
        return command.cooker.recipecaches[mc].pkg_dp
    getDefaultPreference.readonly = True

    def getSkippedRecipes(self, command, params):
        # Return list sorted by reverse priority order
        import bb.cache
        skipdict = OrderedDict(sorted(command.cooker.skiplist.items(),
                                      key=lambda x: (-command.cooker.collection.calc_bbfile_priority(bb.cache.virtualfn2realfn(x[0])[0]), x[0])))
        return list(skipdict.items())
    getSkippedRecipes.readonly = True

    def getOverlayedRecipes(self, command, params):
        return list(command.cooker.collection.overlayed.items())
    getOverlayedRecipes.readonly = True

    def getFileAppends(self, command, params):
        fn = params[0]
        return command.cooker.collection.get_file_appends(fn)
    getFileAppends.readonly = True

    def getAllAppends(self, command, params):
        return command.cooker.collection.bbappends
    getAllAppends.readonly = True

    def findProviders(self, command, params):
        return command.cooker.findProviders()
    findProviders.readonly = True

    def findBestProvider(self, command, params):
        (mc, pn) = split_mc_pn(params[0])
        return command.cooker.findBestProvider(pn, mc)
    findBestProvider.readonly = True

    def allProviders(self, command, params):
        try:
            mc = params[0]
        except IndexError:
            mc = ''
        return list(bb.providers.allProviders(command.cooker.recipecaches[mc]).items())
    allProviders.readonly = True

    def getRuntimeProviders(self, command, params):
        rprovide = params[0]
        try:
            mc = params[1]
        except IndexError:
            mc = ''
        all_p = bb.providers.getRuntimeProviders(command.cooker.recipecaches[mc], rprovide)
        if all_p:
            best = bb.providers.filterProvidersRunTime(all_p, rprovide,
                            command.cooker.data,
                            command.cooker.recipecaches[mc])[0][0]
        else:
            best = None
        return all_p, best
    getRuntimeProviders.readonly = True

    def dataStoreConnectorFindVar(self, command, params):
        dsindex = params[0]
        name = params[1]
        datastore = command.remotedatastores[dsindex]
        value, overridedata = datastore._findVar(name)

        if value:
            content = value.get('_content', None)
            if isinstance(content, bb.data_smart.DataSmart):
                # Value is a datastore (e.g. BB_ORIGENV) - need to handle this carefully
                idx = command.remotedatastores.check_store(content, True)
                return {'_content': DataStoreConnectionHandle(idx),
                        '_connector_origtype': 'DataStoreConnectionHandle',
                        '_connector_overrides': overridedata}
            elif isinstance(content, set):
                return {'_content': list(content),
                        '_connector_origtype': 'set',
                        '_connector_overrides': overridedata}
            else:
                value['_connector_overrides'] = overridedata
        else:
            value = {}
            value['_connector_overrides'] = overridedata
        return value
    dataStoreConnectorFindVar.readonly = True

    def dataStoreConnectorGetKeys(self, command, params):
        dsindex = params[0]
        datastore = command.remotedatastores[dsindex]
        return list(datastore.keys())
    dataStoreConnectorGetKeys.readonly = True

    def dataStoreConnectorGetVarHistory(self, command, params):
        dsindex = params[0]
        name = params[1]
        datastore = command.remotedatastores[dsindex]
        return datastore.varhistory.variable(name)
    dataStoreConnectorGetVarHistory.readonly = True

    def dataStoreConnectorExpandPythonRef(self, command, params):
        config_data_dict = params[0]
        varname = params[1]
        expr = params[2]

        config_data = command.remotedatastores.receive_datastore(config_data_dict)

        varparse = bb.data_smart.VariableParse(varname, config_data)
        return varparse.python_sub(expr)

    def dataStoreConnectorRelease(self, command, params):
        dsindex = params[0]
        if dsindex <= 0:
            raise CommandError('dataStoreConnectorRelease: invalid index %d' % dsindex)
        command.remotedatastores.release(dsindex)

    def dataStoreConnectorSetVarFlag(self, command, params):
        dsindex = params[0]
        name = params[1]
        flag = params[2]
        value = params[3]
        datastore = command.remotedatastores[dsindex]
        datastore.setVarFlag(name, flag, value)

    def dataStoreConnectorDelVar(self, command, params):
        dsindex = params[0]
        name = params[1]
        datastore = command.remotedatastores[dsindex]
        if len(params) > 2:
            flag = params[2]
            datastore.delVarFlag(name, flag)
        else:
            datastore.delVar(name)

    def dataStoreConnectorRenameVar(self, command, params):
        dsindex = params[0]
        name = params[1]
        newname = params[2]
        datastore = command.remotedatastores[dsindex]
        datastore.renameVar(name, newname)

    def parseRecipeFile(self, command, params):
        """
        Parse the specified recipe file (with or without bbappends)
        and return a datastore object representing the environment
        for the recipe.
        """
        fn = params[0]
        appends = params[1]
        appendlist = params[2]
        if len(params) > 3:
            config_data_dict = params[3]
            config_data = command.remotedatastores.receive_datastore(config_data_dict)
        else:
            config_data = None

        if appends:
            if appendlist is not None:
                appendfiles = appendlist
            else:
                appendfiles = command.cooker.collection.get_file_appends(fn)
        else:
            appendfiles = []
        # We are calling bb.cache locally here rather than on the server,
        # but that's OK because it doesn't actually need anything from
        # the server barring the global datastore (which we have a remote
        # version of)
        if config_data:
            # We have to use a different function here if we're passing in a datastore
            # NOTE: we took a copy above, so we don't do it here again
            envdata = bb.cache.parse_recipe(config_data, fn, appendfiles)['']
        else:
            # Use the standard path
            parser = bb.cache.NoCache(command.cooker.databuilder)
            envdata = parser.loadDataFull(fn, appendfiles)
        idx = command.remotedatastores.store(envdata)
        return DataStoreConnectionHandle(idx)
    parseRecipeFile.readonly = True

class CommandsAsync:
    """
    A class of asynchronous commands
    These functions communicate via generated events.
    Any function that requires metadata parsing should be here.
    """

    def buildFile(self, command, params):
        """
        Build a single specified .bb file
        """
        bfile = params[0]
        task = params[1]
        if len(params) > 2:
            internal = params[2]
        else:
            internal = False

        if internal:
            command.cooker.buildFileInternal(bfile, task, fireevents=False, quietlog=True)
        else:
            command.cooker.buildFile(bfile, task)
    buildFile.needcache = False

    def buildTargets(self, command, params):
        """
        Build a set of targets
        """
        pkgs_to_build = params[0]
        task = params[1]

        command.cooker.buildTargets(pkgs_to_build, task)
    buildTargets.needcache = True

    def generateDepTreeEvent(self, command, params):
        """
        Generate an event containing the dependency information
        """
        pkgs_to_build = params[0]
        task = params[1]

        command.cooker.generateDepTreeEvent(pkgs_to_build, task)
        command.finishAsyncCommand()
    generateDepTreeEvent.needcache = True

    def generateDotGraph(self, command, params):
        """
        Dump dependency information to disk as .dot files
        """
        pkgs_to_build = params[0]
        task = params[1]

        command.cooker.generateDotGraphFiles(pkgs_to_build, task)
        command.finishAsyncCommand()
    generateDotGraph.needcache = True

    def generateTargetsTree(self, command, params):
        """
        Generate a tree of buildable targets.
        If klass is provided ensure all recipes that inherit the class are
        included in the package list.
        If pkg_list provided use that list (plus any extras brought in by
        klass) rather than generating a tree for all packages.
        """
        klass = params[0]
        pkg_list = params[1]

        command.cooker.generateTargetsTree(klass, pkg_list)
        command.finishAsyncCommand()
    generateTargetsTree.needcache = True

    def findConfigFiles(self, command, params):
        """
        Find config files which provide appropriate values
        for the passed configuration variable. i.e. MACHINE
        """
        varname = params[0]

        command.cooker.findConfigFiles(varname)
        command.finishAsyncCommand()
    findConfigFiles.needcache = False

    def findFilesMatchingInDir(self, command, params):
        """
        Find implementation files matching the specified pattern
        in the requested subdirectory of a BBPATH
        """
        pattern = params[0]
        directory = params[1]

        command.cooker.findFilesMatchingInDir(pattern, directory)
        command.finishAsyncCommand()
    findFilesMatchingInDir.needcache = False

    def findConfigFilePath(self, command, params):
        """
        Find the path of the requested configuration file
        """
        configfile = params[0]

        command.cooker.findConfigFilePath(configfile)
        command.finishAsyncCommand()
    findConfigFilePath.needcache = False

    def showVersions(self, command, params):
        """
        Show the currently selected versions
        """
        command.cooker.showVersions()
        command.finishAsyncCommand()
    showVersions.needcache = True

    def showEnvironmentTarget(self, command, params):
        """
        Print the environment of a target recipe
        (needs the cache to work out which recipe to use)
        """
        pkg = params[0]

        command.cooker.showEnvironment(None, pkg)
        command.finishAsyncCommand()
    showEnvironmentTarget.needcache = True

    def showEnvironment(self, command, params):
        """
        Print the standard environment
        or if specified the environment for a specified recipe
        """
        bfile = params[0]

        command.cooker.showEnvironment(bfile)
        command.finishAsyncCommand()
    showEnvironment.needcache = False

    def parseFiles(self, command, params):
        """
        Parse the .bb files
        """
        command.cooker.updateCache()
        command.finishAsyncCommand()
    parseFiles.needcache = True

    def compareRevisions(self, command, params):
        """
        Parse the .bb files
        """
        if bb.fetch.fetcher_compare_revisions(command.cooker.data):
            command.finishAsyncCommand(code=1)
        else:
            command.finishAsyncCommand()
    compareRevisions.needcache = True

    def triggerEvent(self, command, params):
        """
        Trigger a certain event
        """
        event = params[0]
        bb.event.fire(eval(event), command.cooker.data)
        command.currentAsyncCommand = None
    triggerEvent.needcache = False

    def resetCooker(self, command, params):
        """
        Reset the cooker to its initial state, thus forcing a reparse for
        any async command that has the needcache property set to True
        """
        command.cooker.reset()
        command.finishAsyncCommand()
    resetCooker.needcache = False

    def clientComplete(self, command, params):
        """
        Do the right thing when the controlling client exits
        """
        command.cooker.clientComplete()
        command.finishAsyncCommand()
    clientComplete.needcache = False

    def findSigInfo(self, command, params):
        """
        Find signature info files via the signature generator
        """
        pn = params[0]
        taskname = params[1]
        sigs = params[2]
        res = bb.siggen.find_siginfo(pn, taskname, sigs, command.cooker.data)
        bb.event.fire(bb.event.FindSigInfoResult(res), command.cooker.data)
        command.finishAsyncCommand()
    findSigInfo.needcache = False