2 PackageKit integration.
5 # Copyright (C) 2010, Aleksey Lim
6 # See the README file for details, or visit http://0install.net.
11 from zeroinstall
import _
, SafeException
13 from zeroinstall
.support
import tasks
, unicode
14 from zeroinstall
.injector
import download
, model
16 _logger_pk
= logging
.getLogger('0install.packagekit')
20 import dbus
.mainloop
.glib
21 dbus
.mainloop
.glib
.DBusGMainLoop(set_as_default
=True)
22 except Exception as ex
:
23 _logger_pk
.info("D-BUS not available: %s", ex
)
26 MAX_PACKAGE_KIT_TRANSACTION_SIZE
= 100
28 class PackageKit(object):
32 self
._candidates
= {} # { package_name : [ (version, arch, size) ] | Blocker }
34 # PackageKit is really slow at handling separate queries, so we use this to
36 self
._next
_batch
= set()
40 return self
.pk
is not None
49 self
._pk
= dbus
.Interface(dbus
.SystemBus().get_object(
50 'org.freedesktop.PackageKit',
51 '/org/freedesktop/PackageKit', False),
52 'org.freedesktop.PackageKit')
53 _logger_pk
.info(_('PackageKit dbus service found'))
54 except Exception as ex
:
55 _logger_pk
.info(_('PackageKit dbus service not found: %s'), ex
)
59 def get_candidates(self
, package_name
, factory
, prefix
):
60 """Add any cached candidates.
61 The candidates are those discovered by a previous call to L{fetch_candidates}.
62 @param package_name: the distribution's name for the package
63 @param factory: a function to add a new implementation to the feed
64 @param prefix: the prefix for the implementation's ID
66 candidates
= self
._candidates
.get(package_name
, None)
67 if candidates
is None:
70 if isinstance(candidates
, tasks
.Blocker
):
71 return # Fetch still in progress
73 for candidate
in candidates
:
74 impl_name
= '%s:%s:%s:%s' % (prefix
, package_name
, candidate
['version'], candidate
['arch'])
76 impl
= factory(impl_name
, only_if_missing
= True, installed
= candidate
['installed'])
78 # (checking this way because the cached candidate['installed'] may be stale)
79 return # Already installed
81 impl
.version
= model
.parse_version(candidate
['version'])
82 if candidate
['arch'] != '*':
83 impl
.machine
= candidate
['arch']
85 def install(handler
, candidate
= candidate
, impl
= impl
):
86 packagekit_id
= candidate
['packagekit_id']
87 dl
= PackageKitDownload('packagekit:' + packagekit_id
, hint
= impl
, pk
= self
.pk
, packagekit_id
= packagekit_id
, expected_size
= candidate
['size'])
88 handler
.monitor_download(dl
)
90 impl
.download_sources
.append(model
.DistributionSource(package_name
, candidate
['size'], install
))
93 def fetch_candidates(self
, package_names
):
97 self
._next
_batch |
= set(package_names
)
99 package_names
= self
._next
_batch
100 self
._next
_batch
= set()
101 # The first fetch_candidates instance will now have all the packages
102 # For the others, package_names will now be empty
104 known
= [self
._candidates
[p
] for p
in package_names
if p
in self
._candidates
]
105 # (use set because a single task may be checking multiple packages and we need
106 # to avoid duplicates).
107 in_progress
= list(set([b
for b
in known
if isinstance(b
, tasks
.Blocker
)]))
108 _logger_pk
.debug('Already downloading: %s', in_progress
)
110 # Filter out the ones we've already fetched
111 package_names
= [p
for p
in package_names
if p
not in self
._candidates
]
113 def do_batch(package_names
):
114 #_logger_pk.info("sending %d packages in batch", len(package_names))
119 def error_cb(sender
):
120 # Note: probably just means the package wasn't found
121 _logger_pk
.info(_('Transaction failed: %s(%s)'), sender
.error_code
, sender
.error_details
)
124 def details_cb(sender
):
125 # The key can be a dbus.String sometimes, so convert to a Python
126 # string to be sure we get a match.
128 for packagekit_id
, d
in sender
.details
.items():
129 details
[unicode(packagekit_id
)] = d
131 _logger_pk
.debug("Got: %r", details
)
132 _logger_pk
.debug("Expecting: %r", versions
)
134 for packagekit_id
, info
in versions
.items():
135 if packagekit_id
in details
:
136 info
.update(details
[packagekit_id
])
137 info
['packagekit_id'] = packagekit_id
138 if (info
['name'] not in self
._candidates
or
139 isinstance(self
._candidates
[info
['name']], tasks
.Blocker
)):
140 self
._candidates
[info
['name']] = [info
]
142 self
._candidates
[info
['name']].append(info
)
144 _logger_pk
.info(_('Empty details for %s'), packagekit_id
)
147 def resolve_cb(sender
):
149 _logger_pk
.debug(_('Resolved %r'), sender
.package
)
150 for packagekit_id
, info
in sender
.package
.items():
151 packagekit_id
= unicode(packagekit_id
) # Can be a dbus.String sometimes
152 parts
= packagekit_id
.split(';', 3)
154 parts
[3] = parts
[3].split(':', 1)[0]
155 packagekit_id
= ';'.join(parts
)
156 versions
[packagekit_id
] = info
157 tran
= _PackageKitTransaction(self
.pk
, details_cb
, error_cb
)
158 tran
.proxy
.GetDetails(list(versions
.keys()))
160 _logger_pk
.info(_('Empty resolve for %s'), package_names
)
164 blocker
= tasks
.Blocker('PackageKit %s' % package_names
)
165 for package
in package_names
:
166 self
._candidates
[package
] = blocker
169 _logger_pk
.debug(_('Ask for %s'), package_names
)
170 tran
= _PackageKitTransaction(self
.pk
, resolve_cb
, error_cb
)
171 tran
.proxy
.Resolve('none', package_names
)
173 in_progress
.append(blocker
)
175 __
, ex
, tb
= sys
.exc_info()
176 blocker
.trigger((ex
, tb
))
179 # Now we've collected all the requests together, split them up into chunks
180 # that PackageKit can handle ( < 100 per batch )
181 #_logger_pk.info("sending %d packages", len(package_names))
183 next_batch
= package_names
[:MAX_PACKAGE_KIT_TRANSACTION_SIZE
]
184 package_names
= package_names
[MAX_PACKAGE_KIT_TRANSACTION_SIZE
:]
189 in_progress
= [b
for b
in in_progress
if not b
.happened
]
191 class PackageKitDownload
:
192 def __init__(self
, url
, hint
, pk
, packagekit_id
, expected_size
):
194 self
.status
= download
.download_fetching
196 self
.aborted_by_user
= False
198 self
.downloaded
= None
200 self
.expected_size
= expected_size
202 self
.packagekit_id
= packagekit_id
204 self
._transaction
= None
207 def error_cb(sender
):
208 self
.status
= download
.download_failed
209 ex
= SafeException('PackageKit install failed: %s' % (sender
.error_details
or sender
.error_code
))
210 self
.downloaded
.trigger(exception
= (ex
, None))
212 def installed_cb(sender
):
213 assert not self
._impl
.installed
, impl
214 self
._impl
.installed
= True
215 self
._impl
.distro
.installed_fixup(self
._impl
)
217 self
.status
= download
.download_complete
218 self
.downloaded
.trigger()
220 def install_packages():
221 package_name
= self
.packagekit_id
222 self
._transaction
= _PackageKitTransaction(self
.pk
, installed_cb
, error_cb
)
223 self
._transaction
.compat_call([
224 ('InstallPackages', False, [package_name
]),
225 ('InstallPackages', [package_name
]),
228 _auth_wrapper(install_packages
)
230 self
.downloaded
= tasks
.Blocker('PackageKit install %s' % self
.packagekit_id
)
233 _logger_pk
.debug(_('Cancel transaction'))
234 self
.aborted_by_user
= True
235 self
._transaction
.proxy
.Cancel()
236 self
.status
= download
.download_failed
237 self
.downloaded
.trigger()
239 def get_current_fraction(self
):
240 if self
._transaction
is None:
242 percentage
= self
._transaction
.getPercentage()
246 return float(percentage
) / 100.
248 def get_bytes_downloaded_so_far(self
):
249 fraction
= self
.get_current_fraction()
253 if self
.expected_size
is None:
255 return int(self
.expected_size
* fraction
)
257 def _auth_wrapper(method
, *args
):
260 except dbus
.exceptions
.DBusException
as e
:
261 if e
.get_dbus_name() != \
262 'org.freedesktop.PackageKit.Transaction.RefusedByPolicy':
265 iface
, auth
= e
.get_dbus_message().split()
266 if not auth
.startswith('auth_'):
269 _logger_pk
.debug(_('Authentication required for %s'), auth
)
271 pk_auth
= dbus
.SessionBus().get_object(
272 'org.freedesktop.PolicyKit.AuthenticationAgent', '/',
273 'org.gnome.PolicyKit.AuthorizationManager.SingleInstance')
275 if not pk_auth
.ObtainAuthorization(iface
, dbus
.UInt32(0),
276 dbus
.UInt32(os
.getpid()), timeout
=300):
281 class _PackageKitTransaction(object):
282 def __init__(self
, pk
, finished_cb
=None, error_cb
=None):
283 self
._finished
_cb
= finished_cb
284 self
._error
_cb
= error_cb
285 self
.error_code
= None
286 self
.error_details
= None
291 self
.object = dbus
.SystemBus().get_object(
292 'org.freedesktop.PackageKit', pk
.GetTid(), False)
293 self
.proxy
= dbus
.Interface(self
.object,
294 'org.freedesktop.PackageKit.Transaction')
295 self
._props
= dbus
.Interface(self
.object, dbus
.PROPERTIES_IFACE
)
298 for signal
, cb
in [('Finished', self
.__finished
_cb
),
299 ('ErrorCode', self
.__error
_code
_cb
),
300 ('StatusChanged', self
.__status
_changed
_cb
),
301 ('Package', self
.__package
_cb
),
302 ('Details', self
.__details
_cb
),
303 ('Files', self
.__files
_cb
)]:
304 self
._signals
.append(self
.proxy
.connect_to_signal(signal
, cb
))
306 defaultlocale
= locale
.getdefaultlocale()[0]
307 if defaultlocale
is not None:
309 ('SetHints', ['locale=%s' % defaultlocale
]),
310 ('SetLocale', defaultlocale
),
313 def getPercentage(self
):
314 result
= self
.get_prop('Percentage')
316 result
, __
, __
, __
= self
.proxy
.GetProgress()
319 def get_prop(self
, prop
, default
= None):
321 return self
._props
.Get('org.freedesktop.PackageKit.Transaction', prop
)
325 # note: Ubuntu's aptdaemon implementation of PackageKit crashes if passed the wrong
326 # arguments (rather than returning InvalidArgs), so always try its API first.
327 def compat_call(self
, calls
):
332 dbus_method
= self
.proxy
.get_dbus_method(method
)
333 return dbus_method(*args
)
334 except dbus
.exceptions
.DBusException
as e
:
335 if e
.get_dbus_name() not in (
336 'org.freedesktop.DBus.Error.UnknownMethod',
337 'org.freedesktop.DBus.Error.InvalidArgs'):
339 raise Exception('Cannot call %r DBus method' % calls
)
341 def __finished_cb(self
, exit
, runtime
):
342 _logger_pk
.debug(_('Transaction finished: %s'), exit
)
344 for i
in self
._signals
:
347 if self
.error_code
is not None:
350 self
._finished
_cb
(self
)
352 def __error_code_cb(self
, code
, details
):
353 _logger_pk
.info(_('Transaction failed: %s(%s)'), details
, code
)
354 self
.error_code
= code
355 self
.error_details
= details
357 def __package_cb(self
, status
, id, summary
):
359 from zeroinstall
.injector
import distro
361 package_name
, version
, arch
, repo_
= id.split(';')
362 clean_version
= distro
.try_cleanup_distro_version(version
)
363 if not clean_version
:
364 _logger_pk
.info(_("Can't parse distribution version '%(version)s' for package '%(package)s'"), {'version': version
, 'package': package_name
})
366 clean_arch
= distro
.canonical_machine(arch
)
367 package
= {'version': clean_version
,
368 'name': package_name
,
370 'installed': (status
== 'installed')}
371 _logger_pk
.debug(_('Package: %s %r'), id, package
)
372 self
.package
[str(id)] = package
373 except Exception as ex
:
374 _logger_pk
.warn("__package_cb(%s, %s, %s): %s", status
, id, summary
, ex
)
376 def __details_cb(self
, id, licence
, group
, detail
, url
, size
):
377 details
= {'licence': str(licence
),
379 'detail': str(detail
),
382 _logger_pk
.debug(_('Details: %s %r'), id, details
)
383 self
.details
[id] = details
385 def __files_cb(self
, id, files
):
386 self
.files
[id] = files
.split(';')
388 def __status_changed_cb(self
, status
):