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annotate mercurial/streamclone.py @ 6840:80e51429cb9a

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introduce store classes move store walking from streamclone.py into store.py
author Adrian Buehlmann <adrian@cadifra.com>
date Thu, 24 Jul 2008 16:32:52 +0200
parents 8ff321a381d0
children 43a817f3a649
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Vadim Gelfer <vadim.gelfer@gmail.com>
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1 # streamclone.py - streaming clone server support for mercurial
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2 #
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3 # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
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4 #
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5 # This software may be used and distributed according to the terms
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6 # of the GNU General Public License, incorporated herein by reference.
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7
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8 import util, lock
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9
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10 # if server supports streaming clone, it advertises "stream"
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11 # capability with value that is version+flags of repo it is serving.
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12 # client only streams if it can read that repo format.
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13
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14 # stream file format is simple.
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15 #
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16 # server writes out line that says how many files, how many total
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17 # bytes. separator is ascii space, byte counts are strings.
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18 #
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19 # then for each file:
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20 #
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21 # server writes out line that says file name, how many bytes in
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22 # file. separator is ascii nul, byte count is string.
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23 #
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24 # server writes out raw file data.
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25
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Dirkjan Ochtman <dirkjan@ochtman.nl>
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26 def stream_out(repo, fileobj, untrusted=False):
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27 '''stream out all metadata files in repository.
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28 writes to file-like object, must support write() and optional flush().'''
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29
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30 if not repo.ui.configbool('server', 'uncompressed', untrusted=untrusted):
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31 fileobj.write('1\n')
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32 return
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33
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Thomas Arendsen Hein <thomas@intevation.de>
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34 try:
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35 entries, total_bytes = repo.storefiles()
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36 except (lock.LockHeld, lock.LockUnavailable), inst:
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37 repo.ui.warn('locking the repository failed: %s\n' % (inst,))
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38 fileobj.write('2\n')
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39 return
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40
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41 fileobj.write('0\n')
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42 repo.ui.debug('%d files, %d bytes to transfer\n' %
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43 (len(entries), total_bytes))
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44 fileobj.write('%d %d\n' % (len(entries), total_bytes))
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45 for name, size in entries:
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46 repo.ui.debug('sending %s (%d bytes)\n' % (name, size))
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47 fileobj.write('%s\0%d\n' % (name, size))
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Benoit Boissinot <benoit.boissinot@ens-lyon.org>
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48 for chunk in util.filechunkiter(repo.sopener(name), limit=size):
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49 fileobj.write(chunk)
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50 flush = getattr(fileobj, 'flush', None)
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51 if flush: flush()