def DeleteBackup(backupID,
removeLocalFilesToo=True,
saveDB=True,
calculate=True):
"""
This removes a single backup ID completely. Perform several operations:
1) abort backup if it just started and is running at the moment
2) if we requested for files for this backup we do not need it anymore - remove 'Data' requests
3) remove interests in transport_control, see ``lib.transport_control.DeleteBackupInterest()``
4) remove that ID from the index data base
5) remove local files for this backup ID
6) remove all remote info for this backup from the memory, see ``p2p.backup_matrix.EraseBackupRemoteInfo()``
7) also remove local info from memory, see ``p2p.backup_matrix.EraseBackupLocalInfo()``
8) stop any rebuilding, we will restart it soon
9) check and calculate used space
10) save the modified index data base, soon it will be synchronized with "index_synchronizer()" state machine
"""
backupID = global_id.CanonicalID(backupID)
# if the user deletes a backup, make sure we remove any work we're doing on it
# abort backup if it just started and is running at the moment
if AbortRunningBackup(backupID):
lg.out(
8, 'backup_control.DeleteBackup %s is in process, stopping' %
backupID)
return True
from customer import io_throttle
from . import backup_rebuilder
lg.out(8, 'backup_control.DeleteBackup ' + backupID)
# if we requested for files for this backup - we do not need it anymore
io_throttle.DeleteBackupRequests(backupID)
io_throttle.DeleteBackupSendings(backupID)
# remove interests in transport_control
# callback.delete_backup_interest(backupID)
# mark it as being deleted in the db, well... just remove it from the index now
if not backup_fs.DeleteBackupID(backupID):
return False
# finally remove local files for this backupID
if removeLocalFilesToo:
backup_fs.DeleteLocalBackup(settings.getLocalBackupsDir(), backupID)
# remove all remote info for this backup from the memory
backup_matrix.EraseBackupRemoteInfo(backupID)
# also remove local info
backup_matrix.EraseBackupLocalInfo(backupID)
# stop any rebuilding, we will restart it soon
backup_rebuilder.RemoveAllBackupsToWork()
backup_rebuilder.SetStoppedFlag()
# check and calculate used space
if calculate:
backup_fs.Scan()
backup_fs.Calculate()
# in some cases we want to save the DB later
if saveDB:
Save()
control.request_update([
('backupID', backupID),
])
return True
def DeletePathBackups(pathID,
removeLocalFilesToo=True,
saveDB=True,
calculate=True):
"""
This removes all backups of given path ID
Doing same operations as ``DeleteBackup()``.
"""
from . import backup_rebuilder
from customer import io_throttle
pathID = global_id.CanonicalID(pathID)
# get the working item
customer, remotePath = packetid.SplitPacketID(pathID)
customer_idurl = global_id.GlobalUserToIDURL(customer)
item = backup_fs.GetByID(remotePath, iterID=backup_fs.fsID(customer_idurl))
if item is None:
return False
lg.out(8, 'backup_control.DeletePathBackups ' + pathID)
# this is a list of all known backups of this path
versions = item.list_versions()
for version in versions:
backupID = packetid.MakeBackupID(customer, remotePath, version)
lg.out(8, ' removing %s' % backupID)
# abort backup if it just started and is running at the moment
AbortRunningBackup(backupID)
# if we requested for files for this backup - we do not need it anymore
io_throttle.DeleteBackupRequests(backupID)
io_throttle.DeleteBackupSendings(backupID)
# remove interests in transport_control
# callback.delete_backup_interest(backupID)
# remove local files for this backupID
if removeLocalFilesToo:
backup_fs.DeleteLocalBackup(settings.getLocalBackupsDir(),
backupID)
# remove remote info for this backup from the memory
backup_matrix.EraseBackupRemoteInfo(backupID)
# also remove local info
backup_matrix.EraseBackupLocalInfo(backupID)
# finally remove this backup from the index
item.delete_version(version)
# lg.out(8, 'backup_control.DeletePathBackups ' + backupID)
# stop any rebuilding, we will restart it soon
backup_rebuilder.RemoveAllBackupsToWork()
backup_rebuilder.SetStoppedFlag()
# check and calculate used space
if calculate:
backup_fs.Scan()
backup_fs.Calculate()
# save the index if needed
if saveDB:
Save()
control.request_update()
return True
def A(self, event, *args, **kwargs):
from customer import fire_hire
from customer import data_sender
from customer import list_files_orator
from storage import backup_rebuilder
from storage import index_synchronizer
#---READY---
if self.state == 'READY':
if event == 'timer-5sec':
self.doOverallCheckUp(*args, **kwargs)
elif event == 'restart' or event == 'suppliers-changed' or (
event == 'instant' and self.RestartAgain):
self.state = 'FIRE_HIRE'
self.RestartAgain = False
self.doRememberSuppliers(*args, **kwargs)
fire_hire.A('restart')
#---LIST_FILES---
elif self.state == 'LIST_FILES':
if (event == 'list_files_orator.state' and args[0] == 'NO_FILES'):
self.state = 'READY'
elif (event == 'list_files_orator.state'
and args[0] == 'SAW_FILES'):
self.state = 'LIST_BACKUPS'
index_synchronizer.A('pull')
data_sender.A('restart')
self.doPrepareListBackups(*args, **kwargs)
elif event == 'restart':
self.RestartAgain = True
elif event == 'suppliers-changed':
self.state = 'READY'
self.RestartAgain = True
#---LIST_BACKUPS---
elif self.state == 'LIST_BACKUPS':
if event == 'list-backups-done':
self.state = 'REBUILDING'
backup_rebuilder.A('start')
elif event == 'restart':
self.RestartAgain = True
elif event == 'suppliers-changed':
self.state = 'READY'
self.RestartAgain = True
elif event == 'restart':
self.state = 'FIRE_HIRE'
fire_hire.A('restart')
#---REBUILDING---
elif self.state == 'REBUILDING':
if (event == 'backup_rebuilder.state'
and args[0] in ['DONE', 'STOPPED']):
self.state = 'READY'
self.doCleanUpBackups(*args, **kwargs)
data_sender.A('restart')
elif event == 'restart' or event == 'suppliers-changed':
self.state = 'FIRE_HIRE'
backup_rebuilder.SetStoppedFlag()
fire_hire.A('restart')
#---FIRE_HIRE---
elif self.state == 'FIRE_HIRE':
if event == 'suppliers-changed' and self.isSuppliersNumberChanged(
*args, **kwargs):
self.state = 'LIST_FILES'
self.doDeleteAllBackups(*args, **kwargs)
self.doRememberSuppliers(*args, **kwargs)
list_files_orator.A('need-files')
elif event == 'fire-hire-finished':
self.state = 'LIST_FILES'
list_files_orator.A('need-files')
elif event == 'suppliers-changed' and not self.isSuppliersNumberChanged(
*args, **kwargs):
self.state = 'LIST_FILES'
self.doUpdateSuppliers(*args, **kwargs)
self.doRememberSuppliers(*args, **kwargs)
list_files_orator.A('need-files')
elif event == 'restart':
self.RestartAgain = True
#---AT_STARTUP---
elif self.state == 'AT_STARTUP':
if event == 'init':
self.state = 'READY'
self.RestartAgain = False
return None
