-#!/usr/bin/env python
-import sys, time
+#!/bin/sh
+"""": # -*-python-*-
+bup_python="$(dirname "$0")/bup-python" || exit $?
+exec "$bup_python" "$0" ${1+"$@"}
+"""
+# end of bup preamble
+
+from __future__ import absolute_import, division, print_function
+import os, sys, time
+
from bup import hashsplit, git, options, client
-from bup.helpers import *
+from bup.helpers import (add_error, handle_ctrl_c, hostname, log, parse_num,
+ qprogress, reprogress, saved_errors,
+ valid_save_name,
+ parse_date_or_fatal)
+from bup.pwdgrp import userfullname, username
optspec = """
-bup split [-tcb] [-n name] [--bench] [filenames...]
+bup split [-t] [-c] [-n name] OPTIONS [--git-ids | filenames...]
+bup split -b OPTIONS [--git-ids | filenames...]
+bup split --copy OPTIONS [--git-ids | filenames...]
+bup split --noop [-b|-t] OPTIONS [--git-ids | filenames...]
--
-r,remote= remote repository path
-b,blobs output a series of blob ids
+ Modes:
+b,blobs output a series of blob ids. Implies --fanout=0.
t,tree output a tree id
c,commit output a commit id
-n,name= name of backup set to update (if any)
+n,name= save the result under the given name
+noop split the input, but throw away the result
+copy split the input, copy it to stdout, don't save to repo
+ Options:
+r,remote= remote repository path
+d,date= date for the commit (seconds since the epoch)
q,quiet don't print progress messages
v,verbose increase log output (can be used more than once)
-noop don't actually save the data anywhere
-copy just copy input to output, hashsplitting along the way
+git-ids read a list of git object ids from stdin and split their contents
+keep-boundaries don't let one chunk span two input files
bench print benchmark timings to stderr
max-pack-size= maximum bytes in a single pack
max-pack-objects= maximum number of objects in a single pack
-fanout= maximum number of blobs in a single tree
+fanout= average number of blobs in a single tree
bwlimit= maximum bytes/sec to transmit to server
+#,compress= set compression level to # (0-9, 9 is highest) [1]
"""
-o = options.Options('bup split', optspec)
+handle_ctrl_c()
+
+o = options.Options(optspec)
(opt, flags, extra) = o.parse(sys.argv[1:])
-handle_ctrl_c()
-git.check_repo_or_die()
if not (opt.blobs or opt.tree or opt.commit or opt.name or
opt.noop or opt.copy):
- o.fatal("use one or more of -b, -t, -c, -n, -N, --copy")
-if (opt.noop or opt.copy) and (opt.blobs or opt.tree or
- opt.commit or opt.name):
- o.fatal('-N and --copy are incompatible with -b, -t, -c, -n')
+ o.fatal("use one or more of -b, -t, -c, -n, --noop, --copy")
+if opt.copy and (opt.blobs or opt.tree):
+ o.fatal('--copy is incompatible with -b, -t')
+if (opt.noop or opt.copy) and (opt.commit or opt.name):
+ o.fatal('--noop and --copy are incompatible with -c, -n')
+if opt.blobs and (opt.tree or opt.commit or opt.name):
+ o.fatal('-b is incompatible with -t, -c, -n')
+if extra and opt.git_ids:
+ o.fatal("don't provide filenames when using --git-ids")
if opt.verbose >= 2:
git.verbose = opt.verbose - 1
opt.bench = 1
+
+max_pack_size = None
if opt.max_pack_size:
- hashsplit.max_pack_size = parse_num(opt.max_pack_size)
+ max_pack_size = parse_num(opt.max_pack_size)
+max_pack_objects = None
if opt.max_pack_objects:
- hashsplit.max_pack_objects = parse_num(opt.max_pack_objects)
+ max_pack_objects = parse_num(opt.max_pack_objects)
+
if opt.fanout:
hashsplit.fanout = parse_num(opt.fanout)
if opt.blobs:
hashsplit.fanout = 0
if opt.bwlimit:
client.bwlimit = parse_num(opt.bwlimit)
+if opt.date:
+ date = parse_date_or_fatal(opt.date, o.fatal)
+else:
+ date = time.time()
+
+total_bytes = 0
+def prog(filenum, nbytes):
+ global total_bytes
+ total_bytes += nbytes
+ if filenum > 0:
+ qprogress('Splitting: file #%d, %d kbytes\r'
+ % (filenum+1, total_bytes // 1024))
+ else:
+ qprogress('Splitting: %d kbytes\r' % (total_bytes // 1024))
+
is_reverse = os.environ.get('BUP_SERVER_REVERSE')
if is_reverse and opt.remote:
o.fatal("don't use -r in reverse mode; it's automatic")
start_time = time.time()
+if opt.name and not valid_save_name(opt.name):
+ o.fatal("'%s' is not a valid branch name." % opt.name)
refname = opt.name and 'refs/heads/%s' % opt.name or None
+
if opt.noop or opt.copy:
cli = pack_writer = oldref = None
elif opt.remote or is_reverse:
+ git.check_repo_or_die()
cli = client.Client(opt.remote)
oldref = refname and cli.read_ref(refname) or None
- pack_writer = cli.new_packwriter()
+ pack_writer = cli.new_packwriter(compression_level=opt.compress,
+ max_pack_size=max_pack_size,
+ max_pack_objects=max_pack_objects)
else:
+ git.check_repo_or_die()
cli = None
oldref = refname and git.read_ref(refname) or None
- pack_writer = git.PackWriter()
+ pack_writer = git.PackWriter(compression_level=opt.compress,
+ max_pack_size=max_pack_size,
+ max_pack_objects=max_pack_objects)
+
+if opt.git_ids:
+ # the input is actually a series of git object ids that we should retrieve
+ # and split.
+ #
+ # This is a bit messy, but basically it converts from a series of
+ # CatPipe.get() iterators into a series of file-type objects.
+ # It would be less ugly if either CatPipe.get() returned a file-like object
+ # (not very efficient), or split_to_shalist() expected an iterator instead
+ # of a file.
+ cp = git.CatPipe()
+ class IterToFile:
+ def __init__(self, it):
+ self.it = iter(it)
+ def read(self, size):
+ v = next(self.it, None)
+ return v or ''
+ def read_ids():
+ while 1:
+ line = sys.stdin.readline()
+ if not line:
+ break
+ if line:
+ line = line.strip()
+ try:
+ it = cp.get(line.strip())
+ next(it, None) # skip the file info
+ except KeyError as e:
+ add_error('error: %s' % e)
+ continue
+ yield IterToFile(it)
+ files = read_ids()
+else:
+ # the input either comes from a series of files or from stdin.
+ files = extra and (open(fn) for fn in extra) or [sys.stdin]
-files = extra and (open(fn) for fn in extra) or [sys.stdin]
if pack_writer:
- shalist = hashsplit.split_to_shalist(pack_writer, files)
- tree = pack_writer.new_tree(shalist)
+ new_blob = pack_writer.new_blob
+ new_tree = pack_writer.new_tree
+elif opt.blobs or opt.tree:
+ # --noop mode
+ new_blob = lambda content: git.calc_hash('blob', content)
+ new_tree = lambda shalist: git.calc_hash('tree', git.tree_encode(shalist))
+
+if opt.blobs:
+ shalist = hashsplit.split_to_blobs(new_blob, files,
+ keep_boundaries=opt.keep_boundaries,
+ progress=prog)
+ for (sha, size, level) in shalist:
+ print(sha.encode('hex'))
+ reprogress()
+elif opt.tree or opt.commit or opt.name:
+ if opt.name: # insert dummy_name which may be used as a restore target
+ mode, sha = \
+ hashsplit.split_to_blob_or_tree(new_blob, new_tree, files,
+ keep_boundaries=opt.keep_boundaries,
+ progress=prog)
+ splitfile_name = git.mangle_name('data', hashsplit.GIT_MODE_FILE, mode)
+ shalist = [(mode, splitfile_name, sha)]
+ else:
+ shalist = hashsplit.split_to_shalist(
+ new_blob, new_tree, files,
+ keep_boundaries=opt.keep_boundaries, progress=prog)
+ tree = new_tree(shalist)
else:
last = 0
- for (blob, bits) in hashsplit.hashsplit_iter(files):
+ it = hashsplit.hashsplit_iter(files,
+ keep_boundaries=opt.keep_boundaries,
+ progress=prog)
+ for (blob, level) in it:
hashsplit.total_split += len(blob)
if opt.copy:
sys.stdout.write(str(blob))
- megs = hashsplit.total_split/1024/1024
+ megs = hashsplit.total_split // 1024 // 1024
if not opt.quiet and last != megs:
- progress('%d Mbytes read\r' % megs)
last = megs
- progress('%d Mbytes read, done.\n' % megs)
if opt.verbose:
log('\n')
-if opt.blobs:
- for (mode,name,bin) in shalist:
- print bin.encode('hex')
if opt.tree:
- print tree.encode('hex')
+ print(tree.encode('hex'))
if opt.commit or opt.name:
- msg = 'bup split\n\nGenerated by command:\n%r' % sys.argv
+ msg = 'bup split\n\nGenerated by command:\n%r\n' % sys.argv
ref = opt.name and ('refs/heads/%s' % opt.name) or None
- commit = pack_writer.new_commit(oldref, tree, msg)
+ userline = '%s <%s@%s>' % (userfullname(), username(), hostname())
+ commit = pack_writer.new_commit(tree, oldref, userline, date, None,
+ userline, date, None, msg)
if opt.commit:
- print commit.encode('hex')
+ print(commit.encode('hex'))
if pack_writer:
pack_writer.close() # must close before we can update the ref
secs = time.time() - start_time
size = hashsplit.total_split
if opt.bench:
- log('\nbup: %.2fkbytes in %.2f secs = %.2f kbytes/sec\n'
- % (size/1024., secs, size/1024./secs))
+ log('bup: %.2f kbytes in %.2f secs = %.2f kbytes/sec\n'
+ % (size / 1024, secs, size / 1024 / secs))
+
+if saved_errors:
+ log('WARNING: %d errors encountered while saving.\n' % len(saved_errors))
+ sys.exit(1)
projects / bup.git / blobdiff