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from tarfile import TarFile, \
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TarInfo
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import os
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import stat
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from itertools import chain
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from .misc import filehash
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def normalized_recursive_directory_iterator(path):
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Q = iter([ path ])
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name = next(Q, None)
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while name:
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st = os.lstat(name)
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if stat.S_ISDIR(st.st_mode):
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L = sorted(os.listdir(name))
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def create_map(name, L):
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return map(lambda x: os.path.join(name, x), L)
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L = create_map(name, L)
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yield (os.path.relpath(name, path), name, st.st_mode, st.st_uid, st.st_gid, st.st_size)
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Q = chain(L, Q)
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else: # file
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yield (os.path.relpath(name, path), name, st.st_mode, st.st_uid, st.st_gid, st.st_size)
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name = next(Q, None)
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def _export_diff(mountpoint, origin_mountpoint, output_directory):
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mit = normalized_recursive_directory_iterator(mountpoint)
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oit = normalized_recursive_directory_iterator(origin_mountpoint)
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def emit_removal(o):
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print('Removal:', o[0])
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def emit_creation(m):
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print('Creation:', m[0])
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def emit_compare(m, o):
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if m[2] != o[2] or m[3] != o[3] or m[4] != o[4]:
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print('Metadata change:', o[0])
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elif m[5] != o[5] :
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print('Size change:', o[0])
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elif stat.S_ISREG(m[2]) and filehash(m[1]) != filehash(o[1]):
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print('Content change:', o[0])
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else: # no change
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pass # print('Compare:', m[0])
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m = next(mit, None)
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o = next(oit, None)
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while True:
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if m is None and o is None:
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break
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elif m is None and o is not None:
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emit_removal(o)
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elif m is not None and o is None:
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emit_creation(m)
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elif m[0] < o[0]:
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emit_creation(m)
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m = next(mit, None)
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elif m[0] > o[0]:
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emit_removal(o)
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o = next(oit, None)
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else:
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emit_compare(m, o)
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m = next(mit, None)
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o = next(oit, None)
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#for root, dirs, files in os.walk(path):
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# dirs.sort()
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# for dirname in dirs:
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# print(os.path.join(root, dirname))
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def command_export(args):
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name, _ = zfs_find(args.reference, focker_type='image')
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mountpoint = zfs_mountpoint(name)
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origin = zfs_parse_output(['zfs', 'get', '-H', 'origin', name])
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origin = origin[2].split('@')[0]
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origin_mountpoint = zfs_mountpoint(origin)
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Q = [ zfs_mountpoint(name) ]
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while len(Q) > 0:
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el = Q.pop()
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