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Migrator.py
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Migrator.py
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# --------------------------------------------------------
__author__ = "Vladimir Fedorov"
__copyright__ = "Copyright (C) 2013 Migrate2Iaas"
#---------------------------------------------------------
import AdjustedBackupSource
import logging
import traceback
import sys
import os
import stat
import DataExtent
import datetime
import time
import random
import VmInstance
import VmVolume
import RawGzipMedia
import SimpleDiskParser
import SimpleDataTransferProto
import MigrateConfig
import CloudConfig
import SystemAdjustOptions
import GzipChunkMedia
import SimpleTransferTarget
import ProxyTransferTarget
import VmInstance
from MigrateExceptions import FileException, AccessDeniedException
class Migrator(object):
"""Here I came to the trap of all products: make kinda place with function DO-EVERYTHING-I-WANT reside"""
def __init__(self , cloud_options , migrate_options, sys_adjust_overrides , skip_imaging=False, resume_upload=False, skip_upload=False ,\
self_checks=False , limits = None , insert_vitio = False , insert_xen = False, backup_mode = False):
"""
Inits the Migrator mega-class.
Args:
cloud_options: CloudConfig.CloudConfig - options specifiying cloud parameters. These options are passed to cloud instance generators and upload channels
migrate_options: MigrateConfig.MigrateConfig - options specifiying how the image should be migrated. These options alters the Migrator behaviour
sys_adjust_overrides: dict - dict-like class overriding default options specifying how the resulting system should be adjusted
skip_imaging: bool - flag to skip imaging activities. Needed primarily for resume-upload scenarios
resume_upload: bool - flag to resume upload instead of starting new one. Needed primarily for resume-upload scenarios
skip_upload: bool - flag to skip upload at all. Needed primarily in case when the upload is already done but cloud server is not created yet
self_checks: bool - some self-checks on images\registry during the Migrator work (doesn't work for now!)
limits: ? (currently long) - the limitation of data to be transfered
insert_vitio : bool - inserts virtio drivers to the running system. Note, this option can be overriden with migrate_options.insertVirtIo()
insert_xen : bool - inserts xen drivers to the running system. Note, this option can be overriden with migrate_options.insertXen()
backup_mode : bool - doesn't create a VM inside the cloud. Just stores image there
"""
self.__adjustedSystemBackupSource = None
self.__systemBackupSource = None
self.__systemTransferTarget = None
self.__systemAdjustOptions = None
# the channel is underlying connection to transfer the data for system target
self.__systemTransferChannel = None
self.__systemMedia = None
self.__limitUpload = limits
self.__adjustOption = None
self.__migrateOptions = migrate_options
self.__cloudOptions = cloud_options
self.__dataBackupSourceList = dict() # the key is data volume device path
self.__dataTransferTargetList = dict()
self.__dataChannelList = dict()
self.__dataMediaList = dict()
self.__runOnWindows = False
self.__selfChecks = self_checks
self.__skipImaging = skip_imaging
self.__skipUpload = skip_upload
self.__resumeUpload = resume_upload
self.__backupMode = backup_mode
self.__resultingInstance = None
self.__cloudName = self.__cloudOptions.getTargetCloud()
#extra megabyte of additional size to store mbr, etc on the image
self.__additionalMediaSize = 0x800*0x200
self.__os = None
self.__fileBackup = False
self.__insertVirtio = insert_vitio or migrate_options.insertVirtIo()
self.__insertXen = insert_xen or migrate_options.insertXen()
self.__error = False
#TODO: pass this parm somehow. Thru migrate\adjust overrides?
self.__linuxGC = True
#TODO: analyze both host and source systems
if self.__migrateOptions.getHostOs() == "Windows":
import Windows
self.__windows = Windows.Windows(self.__insertVirtio , self.__insertXen)
self.__runOnWindows = True
self.__winSystemAdjustOptions = self.__windows.createSystemAdjustOptions(sys_adjust_overrides)
self.__systemAdjustOptions = self.__winSystemAdjustOptions
self.__os = self.__windows
#self.__winSystemAdjustOptions
else:
if self.__linuxGC:
import Linux_GC
self.__linux = Linux_GC.Linux()
else:
import Linux
self.__linux = Linux.Linux()
self.__systemAdjustOptions = self.__linux.createSystemAdjustOptions()
self.__os = self.__linux
# runs full scenario from the start to the upload
def runFullScenario(self):
"""runs full scenario doing all the stuff needed to migrate the server and create a cloud server. returns instance object"""
try:
logging.info("Generating migration process step handlers...")
# 0) check the input action config: what to do
self.generateStepHandlers()
if self.__migrateOptions.getSystemVolumeConfig():
logging.info("Checking system compatibility...")
# 1) test the system on compatibility
if self.checkSystemCompatibility() == False:
logging.info(">>>>>>>>>>>> Compatipility check failed")
return None
logging.info("Checking the input config params")
# 2) check the input parms
if self.checkInputParams() == False:
logging.info(">>>>>>>>>>>> Parameter check failed")
return None
logging.info("Creating the transfer target")
#NOTE: disk size should be min 1 mb larger (offset from mbr)
# 3) create virtual image (transfer target)
if self.createSystemTransferTarget() == False:
logging.info(">>>>>>>>>>>> Transfer target creation failed")
return None
# 4) gets system backup source
logging.info("Initializing system copy source")
if self.createSystemBackupSource() == False:
logging.info(">>>>>>>>>>>> Couldn't adjust the copy source")
return None
# 5) adjusts the system backup source
logging.info("Adjusting the system copy parms")
if self.adjustSystemBackupSource() == False:
logging.info(">>>>>>>>>>>> Couldn't adjust the copy parms")
return None
# 6) adjust transfer target to fit our needs
logging.info("Adjusting the copy target")
if self.adjustSystemBackupTarget() == False:
logging.info(">>>>>>>>>>>> Couldn't adjust the copy target")
return None
# 7) starts the data transfer
logging.info("System copy started")
if self.startSystemBackup() == False:
logging.info(">>>>>>>>>>>> System copy failed")
return None
else:
logging.info(">>>>>>>>>>>>>>>>>>>>>>>>>> No system volumes specified for transfer")
# 8) TODO: instance creation should be distinct start()
if self.__migrateOptions.getDataVolumes().__len__():
logging.info(">>>>>>>>>>>>>>>>>>>>>>>>>> Migrating %d data volumes" , self.__migrateOptions.getDataVolumes().__len__())
# 9) create data images\upload targets. that could be done in several ways
logging.info("Initializing data transfer target")
if self.createDataTransferTargets() == False:
logging.info("Transfer target creation failed")
return None
#TODO: create source adjust too
# 10) gets system backup source
logging.info("Initializing the system backup")
if self.createDataBackupSources() == False:
logging.info("Couldn't adjust the copy source")
return None
# 11) adjusts data backup source
logging.info("Adjusting the data copy parms")
if self.adjustDataBackupSource() == False:
logging.info(">>>>>>>>>>>> Couldn't adjust the copy parms")
return None
# 11) adjust transfer target to fit our needs
logging.info("Adjusting the copy target")
if self.adjustDataBackupTarget() == False:
logging.info("Couldn't adjust the copy target")
return None
# 12) starts the data transfer
logging.info("System copy started")
if self.startDataBackup() == False:
logging.info("System copy failed")
return None
# 13) TODO: attach volumes here!
if self.__resultingInstance and isinstance(self.__resultingInstance, VmInstance.VmInstance):
logging.info("Finalizing the instance making it ready for the user")
self.__resultingInstance.finalize()
except Exception as ex:
traceback.print_exception(sys.exc_info()[0] , sys.exc_info()[1] , sys.exc_info()[2])
logging.error("!!!ERROR: Unexpected error occured " + str(ex))
logging.error(traceback.format_exc())
self.__error = True
return None
#TODO: set error state
# do cleanups? Should write something to the console
finally:
for channel in self.__dataChannelList.values():
channel.close()
if self.__systemTransferChannel:
self.__systemTransferChannel.close()
if self.__systemTransferTarget:
self.__systemTransferTarget.close()
for target in self.__dataTransferTargetList.values():
target.close()
# TODO: catch and free resources here! registry, files, vhds, snapshots.
# use context manager for that
return self.__resultingInstance
def getError(self):
"""returns true if any errors occur during the migration"""
return self.__error
def checkSystemCompatibility(self):
sys_info = self.__os.getSystemInfo()
logging.info("System version: " + sys_info.getSystemVersionString() + " arch:" + hex(sys_info.getSystemArcheticture()))
if self.__runOnWindows:
if (sys_info.getSystemArcheticture() == sys_info.Archx8664 or sys_info.getSystemArcheticture() == sys_info.Archi386) and sys_info.getKernelVersion() >= sys_info.Win2003:
return True
logging.error("!!!ERROR: The configuration is not supported " + sys_info.getSystemVersionString() + " arch:" + hex(sys_info.getSystemArcheticture()))
logging.info("Windows 2003 , 2008R2 and 2012 Server are supported for now")
else:
logging.warning("!Warning: Linux is in experimental support mode")
return True
return False
#reads the config and generates appropriate handlers for the each step
def generateStepHandlers(self):
return True
def generateSystemDataBackupSource(self):
return self.__os.getSystemDataBackupSource()
def generateDataBackupSource(self , volume):
return self.__os.getDataBackupSource(volume)
def createSystemBackupSource(self):
"""creates the system backup source, inits the system disk snapshot"""
if self.__skipImaging:
return True
if self.__runOnWindows:
import WindowsBackupSource
import WindowsBackupAdjust
self.__systemBackupSource = WindowsBackupSource.WindowsBackupSource()
self.__adjustOption = WindowsBackupAdjust.WindowsBackupAdjust(
self.__winSystemAdjustOptions, self.__windows.getVersion())
else:
if self.__linuxGC:
import Linux_GC
from Linux_GC.LinuxBackupSource import LinuxBackupSource
from Linux_GC.LinuxBackupAdjust import LinuxBackupAdjust
self.__systemBackupSource = LinuxBackupSource("/")
self.__adjustOption = LinuxBackupAdjust()
self.__fileBackup = True
else:
import Linux
from Linux.LinuxBackupSource import LinuxBackupSource
from Linux.LinuxBackupAdjust import LinuxBackupAdjust
self.__systemBackupSource = LinuxBackupSource()
self.__adjustOption = LinuxBackupAdjust()
self.__systemBackupSource.setBackupDataSource(self.generateSystemDataBackupSource())
return True
def adjustSystemBackupSource(self):
"""configures all adjusts needed for the system to be backed-up to transfer target"""
if self.__skipImaging:
return True
self.__adjustedSystemBackupSource = AdjustedBackupSource.AdjustedBackupSource()
self.__adjustedSystemBackupSource.setBackupSource(self.__systemBackupSource)
self.__adjustOption.configureBackupAdjust(self.__systemBackupSource, self.__migrateOptions.getDataVolumes())
# remove excluded files and dirs
excludeddirs = self.__migrateOptions.getSystemVolumeConfig().getExcludedDirs()
for excluded in excludeddirs:
logging.info("Removing the file contents from directory " + str(excluded))
try:
fileenum = self.__systemBackupSource.getFileEnum(excluded)
for file in fileenum:
logging.debug("Contents of file " + str(file) + " is set to removal")
self.__adjustOption.removeFile(str(file))
except AccessDeniedException as e:
logging.warning("{0}".format(e))
except FileException:
raise
# for every file in a mask do the following. the excludes shopuld be flexible in vdi migration case
#self.__systemBackupSource.getFileEnum("\\" , mask)
self.__adjustedSystemBackupSource.setAdjustOption(self.__adjustOption)
return True
# it's kinda ImageFactory
def createImageMedia(self, imagepath, imagesize):
"""creats image media using factory provided via migrate options"""
factory = self.__migrateOptions.getImageFactory()
media = factory.createMedia(imagepath , imagesize)
if media:
media.open()
else:
logging.error("Cannot open or create intermediate media to save the machine state")
logging.info("Created new media " + repr(media))
return media
def createTransferTarget(self , media , size , adjustoptions, mbr, newtarget = True):
"""
Internal call to make transfer target (disk volume abstraction) based on media and adjust options
Args:
media :ImageMedia - the media transfer target is based on
size :long - the size of transfer target (volume)
adjustoptions :SystemAdjustOptions - note really WindowsAdjustOptions is used. getNewMbrId() is declared there only
mbr: id of disk in mbr partition table
newtarget: bool - if the target should be new one or old one could be used (not used, needed to signal the existing container should be re-created)
"""
if newtarget:
if self.__runOnWindows == False and self.__linuxGC == True:
#then create a linux bundle targer
import Linux_GC
if ( isinstance(self.__os , Linux_GC.Linux) ):
return self.__os.createBundleTransferTarget(media , size , media.allowDirectFileAccess()); # we use old style gce if image can be directly accessed
else:
raise AssertionError("Linux set to Linux GC but __os is not of Linux_GC.Linux type")
if self.__runOnWindows == False and adjustoptions.getNewSysPartStart() == 0:
logging.info("Initializing a transfer task of the whole disk")
return ProxyTransferTarget.ProxyTransferTarget(SimpleDataTransferProto.SimpleDataTransferProto(media))
parser = SimpleDiskParser.SimpleDiskParser(SimpleDataTransferProto.SimpleDataTransferProto(media) , mbr_id = mbr , default_offset = self.__additionalMediaSize , windows = self.__runOnWindows)
part_type = SimpleDiskParser.SimpleDiskParser.PART_TYPE_NTFS
fix_nt_boot = True
if self.__runOnWindows == False:
part_type = SimpleDiskParser.SimpleDiskParser.PART_TYPE_EXT
fix_nt_boot = False
return parser.createTransferTarget(size , fix_nt_boot, part_type )
return SimpleTransferTarget.SimpleTransferTarget( self.__additionalMediaSize , SimpleDataTransferProto.SimpleDataTransferProto(media) )
def createSystemTransferTarget(self):
"""Creates transfer targets: disk images where the data should be transfered"""
if self.__skipImaging == False or self.__skipUpload == False:
self.__systemMedia = self.createImageMedia(self.__migrateOptions.getSystemImagePath() , self.__migrateOptions.getSystemImageSize() + self.__additionalMediaSize)
if self.__systemMedia == None:
logging.error("!!!ERROR: Cannot create/open intermediate image (media) for an operation")
return
#NOTE: the media should be created nevertheless of the imaging done
#so , calls are
if self.__skipImaging == False:
self.__systemTransferTarget = self.createTransferTarget(self.__systemMedia, self.__migrateOptions.getSystemImageSize(),
self.__systemAdjustOptions, self.__systemAdjustOptions.getNewMbrId())
sys_vol_info = self.__migrateOptions.getSystemVolumeConfig()
if self.__skipImaging == False or self.__skipUpload == False:
data_size = self.__systemMedia.getMaxSize()
image_size = self.__systemMedia.getImageSize()
else:
data_size = image_size = 0
description = os.environ['COMPUTERNAME']+"-"+"system"+"-"+str(datetime.date.today())
self.__systemTransferChannel = self.__cloudOptions.generateUploadChannel(data_size , self.__cloudOptions.getServerName() or description, \
sys_vol_info.getUploadPath(), self.__resumeUpload , image_size )
if self.__skipUpload == False:
self.__systemTransferChannel.initStorage()
# update the upload path in config in case it was changed or created by the channel
uploadpath = self.__systemTransferChannel.getUploadPath()
logging.debug("The upload channel path is: " + uploadpath)
sys_vol_info.setUploadPath(uploadpath)
if self.__skipUpload == True and not sys_vol_info.getUploadId():
uploadpath = self.__systemTransferChannel.getUploadPath()
upload_ids = self.__systemTransferChannel.findUploadId(".*?"+sys_vol_info.getUploadPath())
if not upload_ids:
logging.error("!!!ERROR: Cannot find any matching manifest.xml file")
return False
# we pick latest entry due to date
upload_id = sorted(upload_ids)[-1]
logging.info(">>>>>> Utilizing "+ upload_id + " restoration point")
sys_vol_info.setUploadId(upload_id)
return True
def adjustSystemBackupTarget(self):
# dunno really what could we do here
return True
def startSystemBackup(self):
if self.__skipImaging:
logging.info("\n>>>>>>>>>>>>>>>>> Skipping the system imaging\n")
else:
logging.info("\n>>>>>>>>>>>>>>>>> Started the system imaging\n")
#HERE we create an alternative backup mechanism: that is file backup
if self.__fileBackup:
logging.info("\n>>>>>>>>>>>>>>>> Performing file level transfer");
files = self.__adjustedSystemBackupSource.getFileEnum(root="/")
for file in files:
self.__systemTransferTarget.transferFile(file)
else:
logging.info("\n>>>>>>>>>>>>>>>> Performing block level transfer");
#get data
extents = self.__adjustedSystemBackupSource.getFilesBlockRange()
#TODO: create kinda callbacks for transfers to monitor them
self.__systemTransferTarget.transferRawData(extents)
# free VSS snapshot if Windows
if self.__runOnWindows:
self.__windows.freeDataBackupSource(self.__systemBackupSource.getBackupDataSource())
self.__systemTransferTarget.close()
# we save the config to reflect the image generated is ready.
#TODO: add the creation time here? or something alike? snapshot time too?
self.__migrateOptions.getSystemVolumeConfig().saveConfig()
imagesize = 0
disksize = 0
if self.__skipUpload:
logging.info("\n>>>>>>>>>>>>>>>>> Skipping the system image upload\n")
else:
logging.info("\n>>>>>>>>>>>>>>>>> Upload of the system image started\n")
channel = self.__systemTransferChannel
media = self.__systemMedia
imagesize = media.getImageSize()
disksize = media.getMaxSize()
imageid = self.uploadImage(media,channel)
channel.close()
if imageid:
self.__migrateOptions.getSystemVolumeConfig().setUploadId(imageid)
self.__migrateOptions.getSystemVolumeConfig().saveConfig()
else:
logging.error("!!!Error: Upload error. Please make a reupload via resume upload")
return False
if self.__backupMode == True:
#skip imaging
logging.info(">>>>>>>>>>>>> The image has been succesfully uploaded to: " + self.__migrateOptions.getSystemVolumeConfig().getUploadId())
logging.info(">>>>>>>>>>>>> Backup mode is enabled: server instance is not created. Enable redeploy mode to DR from the uploaded image.")
return True
#creating instance from the uploaded image
# imagesize here is the size of image file. but getImageSize() is the size of initial volume
if self.generateInstance(self.__migrateOptions.getSystemVolumeConfig().getUploadId() , imagesize , disksize):
logging.info(">>>>>>>>>>>>> System volume transfer completed successfully");
return True
else:
self.__error = True
return False
def uploadImage(self , media, channel):
imagesize = media.getImageSize()
datasize = channel.getTransferChunkSize()
logging.debug("Upload image of size " + str(imagesize) + " (full source disk data size is " + str(media.getMaxSize()) + " )")
dataplace = 0
datasent = 0
logging.info(">>>>>>>>>> Data size to upload: " + str(imagesize/1024/1024) + " MB")
timestart = datetime.datetime.now()
while dataplace < imagesize:
percentcomplete = int(float(dataplace) / imagesize * 100);
logmsg = ""
if (datasent % 10 == 0):
logmsg = " Progress: " + str(percentcomplete) + "% - "
logmsg = logmsg + str(int(channel.getOverallDataTransfered()/1024/1024)) + " MB uploaded. " ;
if channel.getOverallDataSkipped():
logmsg = logmsg + str(int(channel.getOverallDataSkipped()/1024/1024)) + " MB was already in the cloud. "
if self.__limitUpload and channel.getOverallDataTransfered() > self.__limitUpload:
logging.error("!!!ERROR: Upload limit reached. Please upgrade contact sales@migrate2iaas.com to obtain the license.")
return None
#NOTE: this is a very rough estimate
timenow = datetime.datetime.now()
timedelta = datetime.timedelta()
timedelta = timenow - timestart
if dataplace and channel.getOverallDataTransfered():
totalsec = timedelta.seconds + long(timedelta.days) * 24*60*60
if totalsec:
secondsleft = int(float(imagesize - dataplace)/float(dataplace/totalsec))
days = secondsleft / (3600*24)
hours = secondsleft % (3600*24) / 3600
minutes = (secondsleft % (3600*24) % 3600) / 60
if days:
logmsg = logmsg + str(days) + " days "
if hours:
logmsg = logmsg + str(hours) + " hrs "
if minutes:
logmsg = logmsg + str(minutes) + " mins "
logmsg = logmsg + "left."
logging.info( "% "+ logmsg )
if dataplace + datasize > imagesize:
datasize = imagesize - dataplace
data = media.defferedReadImageData(dataplace, datasize)
dataext = DataExtent.CachedDataExtent(dataplace , datasize)
dataplace = dataplace + datasize
dataext.setData(data)
if channel.uploadData(dataext) == False:
return None
datasent = datasent + 1
channel.waitTillUploadComplete()
logmsg = "% The image data has been fully processed. "
#if channel.getOverallDataSkipped():
# logmsg = logmsg + str(int(channel.getOverallDataSkipped()/1024/1024)) + " MB are already in the cloud. "
logging.info( logmsg + str(int(channel.getOverallDataTransfered()/1024/1024)) + " MB transfered." )
logging.info("\n>>>>>>>>>>>>>>>>> Preparing the image uploaded for cloud use")
imageid = channel.confirm()
return imageid
def checkInputParams(self):
return True
def generateInstance(self , imageid, imagesize , volumesize):
generator = self.__cloudOptions.generateInstanceFactory()
instancename = self.__migrateOptions.getSystemVolumeConfig().generateMigrationId()
if not generator:
logging.info(">>>>>>>>>>>>>>>>> The system image is uploaded. ");
logging.info("You could start your server via " + self.__cloudName + " management console");
logging.info(">>>>>>>>>>>>>>>>> Data was uploaded to " + str(imageid))
self.__resultingInstance = imageid
return True
if self.__cloudName == "EC2":
logging.info("Creating EC2 VM from the image stored at " + str(imageid))
import EC2InstanceGenerator
import EC2Instance
awskey = self.__cloudOptions.getCloudUser()
awssecret = self.__cloudOptions.getCloudPass()
#TODO: refactor this stuff
self.__resultingInstance = generator.makeInstanceFromImage(imageid, self.__cloudOptions , instancename , awskey, awssecret , self.__migrateOptions.getSystemImagePath() , imagesize , volumesize , self.__migrateOptions.getImageType())
else:
self.__resultingInstance = generator.makeInstanceFromImage(imageid , self.__cloudOptions , instancename)
return self.__resultingInstance != None
#TODO: make parameters optional, refactor
# if they are not specified - load imageid
def generateVolume(self , imageid , localimagepath , imagesize , volumesize , description = ""):
generator = None
volname = ""
vol = None
if description:
volname = description
else:
volname = os.environ['COMPUTERNAME']+"_data_volume"
#TODO: make volume generator separate class
if self.__cloudName == "EC2":
import EC2VolumeGenerator
import EC2Instance
import EC2Volume
awskey = self.__cloudOptions.getCloudUser()
awssecret = self.__cloudOptions.getCloudPass()
if self.__cloudOptions.generateInstanceFactory():
generator = EC2VolumeGenerator.EC2VolumeGenerator(self.__cloudOptions.getRegion())
vol = generator.makeVolumeFromImage(imageid, self.__cloudOptions , awskey, awssecret , localimagepath , imagesize , volumesize , self.__migrateOptions.getImageType())
else:
generator = None
elif self.__cloudName == "Azure":
import AzureConfigs
import AzureInstanceGenerator
generator = self.__cloudOptions.generateInstanceFactory()
else:
generator = self.__cloudOptions.generateInstanceFactory()
if generator and not vol:
vol = generator.makeVolumeFromImage(imageid , self.__cloudOptions , volname)
if not generator:
logging.info(">>>>>>>>>>>>>>>>> The data volume image is uploaded ")
logging.info(">>>>>>>>>>>>>>>>> You could add it to your server via " + self.__cloudName + " management console");
logging.info(">>>>>>>>>>>>>>>>> Data was uploaded to " + str(imageid))
return None
if vol:
logging.info(">>>>>>>>>>>>>>>>> The data volume " + str(volname) + " created")
return True
return None
def createDataTransferTargets(self):
for volinfo in self.__migrateOptions.getDataVolumes():
# INIT IMAGES:
if self.__skipImaging == False or self.__skipUpload == False:
media = self.createImageMedia(volinfo.getImagePath() , volinfo.getImageSize() + self.__additionalMediaSize)
if media == None:
logging.error("!!!ERROR: Cannot create/open intermediate image (media) for an operation")
return False
self.__dataMediaList[volinfo.getVolumePath()]=media
if self.__runOnWindows:
#TODO: need kinda redisign the stuff related to system adjusts!
if self.__skipImaging == False:
self.__dataTransferTargetList[volinfo.getVolumePath()] = self.createTransferTarget(
media, volinfo.getImageSize(), self.__winSystemAdjustOptions, volinfo.getMbrId())
description = os.environ['COMPUTERNAME']+"_"+"data"+"_"+str(datetime.date.today())
# if we are running from non-local system, data is and image size is unknown
if self.__skipImaging == False or self.__skipUpload == False:
data_size = self.__dataMediaList[volinfo.getVolumePath()].getMaxSize()
image_size = self.__dataMediaList[volinfo.getVolumePath()].getImageSize()
else:
data_size = image_size = 0
# INIT CLOUD CONNECTION
self.__dataChannelList[volinfo.getVolumePath()] = self.__cloudOptions.generateUploadChannel(
data_size,
self.__cloudOptions.getServerName() or description,
volinfo.getUploadPath(),
self.__resumeUpload,
image_size)
# INIT STORAGE FOR THE UPLOAD
if self.__skipUpload == False:
self.__dataChannelList[volinfo.getVolumePath()].initStorage()
# update the upload path in config in case it was changed or created by the channel
uploadpath = self.__dataChannelList[volinfo.getVolumePath()].getUploadPath()
logging.debug("The upload channel path is: " + uploadpath)
volinfo.setUploadPath(uploadpath)
# FIND OLD UPLOAD RESULT IF POSSIBLE
if self.__skipUpload == True and not volinfo.getUploadId():
# tested on aws only
upload_ids = self.__dataChannelList[volinfo.getVolumePath()].findUploadId(".*?"+volinfo.getUploadPath())
if not upload_ids:
logging.error("!!!ERROR: Cannot find any matching manifest.xml file")
return False
# we pick latest entry due to date
upload_id = sorted(upload_ids)[-1]
logging.info(">>>>>> Utilizing "+ upload_id + " restoration point")
volinfo.setUploadId(upload_id)
return True
def createDataBackupSources(self):
if self.__skipImaging:
return True
for volinfo in self.__migrateOptions.getDataVolumes():
asjustedsource = AdjustedBackupSource.AdjustedBackupSource()
if self.__runOnWindows:
import WindowsBackupSource
import WindowsBackupAdjust
backupsource = WindowsBackupSource.WindowsBackupSource()
backupsource.setBackupDataSource(self.generateDataBackupSource(volinfo.getVolumePath()))
# Adding adjusted source options
asjustedsource.setBackupSource(backupsource)
asjustedsource.setAdjustOption(WindowsBackupAdjust.WindowsBackupAdjust(
self.__systemAdjustOptions,
self.__windows.getVersion()))
else:
if self.__linuxGC:
import Linux_GC
from Linux_GC.LinuxBackupSource import LinuxBackupSource
from Linux_GC.LinuxBackupAdjust import LinuxBackupAdjust
asjustedsource.setBackupSource(LinuxBackupSource())
asjustedsource.setAdjustOption(LinuxBackupAdjust())
self.__fileBackup = True
else:
import Linux
from Linux.LinuxBackupSource import LinuxBackupSource
from Linux.LinuxBackupAdjust import LinuxBackupAdjust
asjustedsource.setBackupSource(LinuxBackupSource())
asjustedsource.setAdjustOption(LinuxBackupAdjust())
self.__dataBackupSourceList[volinfo.getVolumePath()] = asjustedsource
return True
def adjustDataBackupSource(self):
"""configures all adjusts needed for the system to be backed-up to transfer target"""
if self.__skipImaging:
return True
# remove excluded files and dirs
for volinfo in self.__migrateOptions.getDataVolumes():
for excluded in volinfo.getExcludedDirs():
vol_path = str(volinfo.getVolumePath())
# if exclude dir starts with volume name
if not str(excluded).startswith("\\"):
# compare volume name
if vol_path.endswith(str(excluded)[:2]):
excluded = str(excluded)[2:]
else:
continue
logging.info("Removing the file contents from directory " + str(excluded))
try:
fileenum = self.__dataBackupSourceList[vol_path].getFileEnum(excluded)
for file in fileenum:
logging.debug("Contents of file " + str(file) + " is set to removal")
self.__dataBackupSourceList[vol_path].getAdjustOption().removeFile(str(file))
except AccessDeniedException as e:
# Just logging access denied exception
logging.warning("{0}".format(e))
except FileException:
raise
return True
def adjustDataBackupTarget(self):
return True
def startDataBackup(self):
if self.__skipImaging:
logging.info("\n>>>>>>>>>>>>>>>>> Skipping the data volume imaging\n")
else:
#RODO: make kinda generic function. I'm pissed with all this copy-paste bugs
#TODO: log and profile
logging.info("\n>>>>>>>>>>>>>>>>> Started the data volume imaging\n")
for volinfo in self.__migrateOptions.getDataVolumes():
#get data
extents = self.__dataBackupSourceList[volinfo.getVolumePath()].getFilesBlockRange()
#TODO: create kinda callbacks for transfers to monitor them
#write,
self.__dataTransferTargetList[volinfo.getVolumePath()].transferRawData(extents)
self.__dataTransferTargetList[volinfo.getVolumePath()].close()
#TODO: move somewhere else
if self.__runOnWindows:
self.__windows.freeDataBackupSource(
self.__dataBackupSourceList[volinfo.getVolumePath()].getBackupSource().getBackupDataSource())
# we save the config to reflect the image generated is ready.
#TODO: add the creation time here? or something alike? snapshot time too?
volinfo.saveConfig()
for volinfo in self.__migrateOptions.getDataVolumes():
mediaimagesize = 0
disksize = 0
if self.__skipUpload:
logging.info("\n>>>>>>>>>>>>>>>>> Skipping the data image upload\n")
else:
logging.info("\n>>>>>>>>>>>>>>>>> Started the data image upload\n")
channel = self.__dataChannelList[volinfo.getVolumePath()]
media = self.__dataMediaList[volinfo.getVolumePath()]
imageid = self.uploadImage(media,channel)
channel.close()
mediaimagesize = media.getImageSize()
disksize = media.getMaxSize()
if imageid:
volinfo.setUploadId(imageid)
volinfo.saveConfig()
else:
logging.error("!!!Error: Upload error. Please make a reupload via resume upload")
return False
logging.info("Creating volume from the image stored at " + str(volinfo.getUploadId()))
# image size is really size of data, imagesize here is size of image file
# dammit, needs clarifications
volume = self.generateVolume(volinfo.getUploadId() , volinfo.getImagePath() , mediaimagesize , disksize , volinfo.generateMigrationId() )
if self.__resultingInstance and volume and isinstance(volume,VmVolume.VmVolume):
logging.info(">>> Attaching volume " + str(volume) + " to instance " + str(self.__resultingInstance))
try:
volume.attach(str(self.__resultingInstance))
except Exception as e:
logging.warning("!Cannot attach volume " + str(volume) + " to the instance. Please attach the volume manually via cloud management console")
logging.warning(traceback.format_exc())
return True