94 lines
4.3 KiB
Python
94 lines
4.3 KiB
Python
# ------------------------------------------------------------------------------
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import sys, time, os, os.path
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from optparse import OptionParser
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# ------------------------------------------------------------------------------
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class RestoreError(Exception): pass
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ERROR_CODE = 1
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# ------------------------------------------------------------------------------
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class ZodbRestorer:
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def __init__(self, storageLocation, backupFolder, options):
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self.storageLocation = storageLocation
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self.backupFolder = backupFolder
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self.repozo = options.repozo or 'repozo.py'
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self.restoreDate = options.date
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self.python = options.python
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def run(self):
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startTime = time.time()
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datePart = ''
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if self.restoreDate:
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datePart = '-D %s' % self.restoreDate
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repozoCmd = '%s %s -Rv -r %s %s -o %s' % (self.python,
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self.repozo, self.backupFolder, datePart, self.storageLocation)
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print 'Executing %s...' % repozoCmd
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os.system(repozoCmd)
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stopTime = time.time()
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print 'Done in %d minutes.' % ((stopTime-startTime)/60)
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# ------------------------------------------------------------------------------
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class ZodbRestoreScript:
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'''usage: python restore.py storageLocation backupFolder [options]
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storageLocation is the storage that will be created at the end of the
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restore process (ie /tmp/Data.hurrah.fs);
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backupFolder is the folder used for storing storage backups
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(ie /data/zodbbackups).'''
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def checkArgs(self, options, args):
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'''Check that the scripts arguments are correct.'''
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# Do I have the correct number of args?
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if len(args) != 2:
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raise RestoreError('Wrong number of arguments.')
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# Check that storageLocation does not exist.
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if os.path.exists(args[0]):
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raise RestoreError('"%s" exists. Please specify the name of a ' \
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'new file (in a temp folder for example); you ' \
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'will move this at the right place in a second '\
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'step.' % args[0])
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# Check backupFolder
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if not os.path.isdir(args[1]):
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raise RestoreError('"%s" does not exist or is not a folder.' % \
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args[1])
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# Try to create storageLocation to check if we have write
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# access in it.
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try:
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f = file(args[0], 'w')
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f.write('Hello.')
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f.close()
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os.remove(args[0])
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except OSError, oe:
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raise RestoreError('I do not have the right to write file ' \
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'"%s".' % args[0])
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def run(self):
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optParser = OptionParser(usage=ZodbRestoreScript.__doc__)
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optParser.add_option("-p", "--python", dest="python",
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help="The path to the Python interpreter running "\
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"Zope",
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default='python2.4',metavar="REPOZO",type='string')
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optParser.add_option("-r", "--repozo", dest="repozo",
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help="The path to repozo.py",
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default='', metavar="REPOZO", type='string')
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optParser.add_option("-d", "--date", dest="date",
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help="Date of the image to restore (format=" \
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"YYYY-MM-DD-HH-MM-SS). It is UTC time, " \
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"not local time. If you don't specify this " \
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"option, it defaults to now. If specified, " \
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"hour, minute, and second parts are optional",
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default='', metavar="DATE", type='string')
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(options, args) = optParser.parse_args()
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try:
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self.checkArgs(options, args)
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backuper = ZodbRestorer(args[0], args[1], options)
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backuper.run()
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except RestoreError, be:
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sys.stderr.write(str(be))
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sys.stderr.write('\n')
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optParser.print_help()
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sys.exit(ERROR_CODE)
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# ------------------------------------------------------------------------------
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if __name__ == '__main__':
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ZodbRestoreScript().run()
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# ------------------------------------------------------------------------------
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