def verify_backup(rootdir, mdata, num_threads=None):
# Results
changed = []
missing = []
unexpected = []
scan_errors = []
# First, we get all the relevant paths
scan_result = scan_backup(rootdir)
scan_errors = scan_result.errors
unexpected = scan_result.ignored
# Build a dictionary with all original metdata
original_metadata = {}
for p in itertools.chain(mdata.files, mdata.symlinks, mdata.directories):
original_metadata[p.name] = p
# Build a dictionary with all current metadata
digest_map = hashdeep.compute_digests(rootdir, scan_result.files,
num_threads)
uid_map = utils.get_uid_name_map()
gid_map = utils.get_gid_name_map()
current_metadata = {}
for f in scan_result.files:
current_metadata[f] = metadata.get_file_metadata(rootdir, f, digest_map,
uid_map, gid_map)
for s in scan_result.symlinks:
current_metadata[s] = metadata.get_symlink_metadata(rootdir, s, uid_map,
gid_map)
for d in scan_result.directories:
current_metadata[d] = metadata.get_directory_metadata(rootdir, d,
uid_map, gid_map)
# Find missing and unexpected files
all_current_paths = set(scan_result.files + scan_result.symlinks
+ scan_result.directories)
all_original_paths = set(original_metadata.keys())
missing = sorted(list(all_original_paths - all_current_paths))
unexpected.extend(list(all_current_paths - all_original_paths))
unexpected.sort()
# Find changed files
for p in all_current_paths.intersection(all_original_paths):
if not lenient_match(current_metadata[p], original_metadata[p]):
changed.append(p)
# Return the final result
return VerificationResult(changed, missing, unexpected, scan_errors)
def get_default_metadata(rootdir, path, uid_map=None, gid_map=None):
"""Returns a dictonary, whose keys are default_metadata (as
defined above) and entries are the results of the corresponding
os.stat call on native_path."""
if uid_map is None:
uid_map = utils.get_uid_name_map()
if gid_map is None:
gid_map = utils.get_gid_name_map()
native_path = utils.build_native_path(rootdir, path)
stat = os.lstat(native_path)
metadata = {}
metadata['name'] = os.path.basename(path)
# TODO: use strings instead of UNIX epoch seconds
# TODO: fields we are currently not using: st_mode, st_ino, st_dev, st_nlink
# - is this intentional?
metadata['mtime'] = stat.st_mtime
metadata['user'] = uid_map.get(stat.st_uid, str(stat.st_uid))
metadata['group'] = gid_map.get(stat.st_gid, str(stat.st_gid))
metadata['permissions'] = '%04o' % stat.st_mode
return metadata
new_node = get_symlink_node(rootdir, linkname, uid_map, gid_map)
dir_node.children[basename] = new_node
# Step 3: insert the files into the directory tree
for filename in files:
dirname, basename = os.path.split(filename)
# Navigate to the right part in the directory tree
dir_node = find_directory_in_tree(root_node, dirname)
# Insert the file node
new_node = get_file_node(rootdir, filename, digest_map, uid_map, gid_map)
dir_node.children[basename] = new_node
return root_node
if __name__ == "__main__":
import collections
import pattern
import StringIO
rootdir = '/home/madars/Documents/projects/go-backup'
patterns_file = StringIO.StringIO("+ /\n")
patterns = pattern.parse_pattern_file(patterns_file)
res = pattern.assemble_paths(rootdir, patterns)
digest_map = collections.defaultdict(lambda : 'demo')
uid_map = utils.get_uid_name_map()
gid_map = utils.get_gid_name_map()
tree = get_metadata_tree(rootdir, res.filenames, res.symlinks, res.directories,
digest_map, uid_map, gid_map)
import json
print json.dumps(tree, indent=2)
def test_get_gid_name_map_consistency():
# TODO: maybe mock out in future?
gid_name_map = utils.get_gid_name_map()
for (gid, name) in gid_name_map.iteritems():
assert grp.getgrgid(gid).gr_name == name
assert grp.getgrnam(name).gr_gid == gid
