1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
#!/usr/bin/env bash
# Copyright (c) 2014-2015, Michał Górny
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
shopt -s nullglob
set -e -x
# == config ==
# filled with gentoo-specific details, change at will
source /usr/local/bin/mastermirror/rsync-gen.vars
# Final snapshots and deltas get mirrored out here.
mirrordir=${UPLOAD}/squashfs
# We keep reverse deltas around here to allow handling past snapshots
# without having to keep them in full size.
revdeltadir=${BASE}/squashfs-tmp
# This is where the master (unpacked) copy of the repository is located.
repodir=${FINALDIR_repo_gentoo}
# GPG key ID to sign with
signkeyid="DCD05B71EAB94199527F44ACDB6B8C1F96D8BF6D"
# Deltas to keep before cleanup
cleanupno=180
# == config ends here ==
if [[ ! -d ${revdeltadir} ]]; then
mkdir -p "${revdeltadir}"
fi
# Squashdelta only supports lzo and lz4
algo_lzo=( -comp lzo -Xcompression-level 4 )
algo_xz=( -comp xz )
algo_LIST=( lzo xz )
mksquashfs_options=(
-no-xattrs -force-uid portage -force-gid portage
)
[[ -d ${mirrordir} ]]
[[ -d ${revdeltadir} ]]
[[ -d ${repodir} ]]
reponame=$(<"${repodir}"/profiles/repo_name)
[[ ${reponame} ]]
tempdir=$(mktemp -d)
trap 'rm -r "${tempdir}"' EXIT
# Build exclusion list
EXCLUSION_LIST="$(mktemp -p "${tempdir}" squashfs-exclude.XXXXXXXXXX)"
"$(dirname $0)"/print-exclusion-list.sh "${repodir}" >"${EXCLUSION_LIST}"
mksquashfs_options+=( -ef "${EXCLUSION_LIST}" )
for algo in "${algo_LIST[@]}" ; do
ext=".${algo}.sqfs"
snapshots=( "${mirrordir}"/${reponame}-*${ext} )
if [[ ${snapshots[@]} ]]; then
yesterdaysnap=${snapshots[-1]}
if [[ ${yesterdaysnap} == *-current${ext} ]]; then
yesterdaysnap=$(readlink -m "${yesterdaysnap}")
fi
yesterday=${yesterdaysnap#*/${reponame}-}
yesterday=${yesterday%${ext}}
fi
# get date from the repo, move it few hours back to ensure
# it is 'previous day', alike .tar snapshots
today=$(date --date="$(<"${repodir}"/metadata/timestamp.chk ) - 6 hours" +%Y%m%d)
todaysnap_file=${reponame}-${today}${ext}
todaysnap=${mirrordir}/${todaysnap_file}
if [[ ! -f ${todaysnap} ]]; then
# take today's snapshot
tmp=algo_$algo[@]
file="${tempdir}/${reponame}-${today}${ext}"
mksquashfs "${repodir}" "${file}" "${mksquashfs_options[@]}" "${!tmp}"
mv "${file}" "${mirrordir}/"
fi
# Deltas are not supported for XZ
if false && [[ "${algo}" != "xz" ]]; then
if [[ ${yesterday} ]]; then
# create rev-delta from today to yesterday
squashdelta "${todaysnap}" "${yesterdaysnap}" \
"${revdeltadir}/${reponame}-${today}-${yesterday}.${algo}.sqdelta"
# create deltas from previous days to today
revdeltas=( "${revdeltadir}"/*.${algo}.sqdelta )
lastdelta=$(( ${#revdeltas[@]} - cleanupno ))
for (( i = ${#revdeltas[@]} - 1; i >= 0; i-- )); do
[[ ${i} != ${lastdelta} ]] || break
r=${revdeltas[${i}]}
ldate=${r#*/${reponame}-}
rdate=${ldate%.${algo}.sqdelta}
ldate=${ldate%-*}
rdate=${rdate#*-}
# ldate = newer, rdate = older
rsnap=${tempdir}/${reponame}-${rdate}${ext}
if [[ ${rdate} == "${yesterday}" ]]; then
# we have yesterday's snapshot already, so use it
cp "${yesterdaysnap}" "${rsnap}"
else
# otherwise, we need to reconstruct the snap
lsnap=${tempdir}/${reponame}-${ldate}${ext}
if [[ ${ldate} == "${yesterday}" ]]; then
cp "${yesterdaysnap}" "${lsnap}"
fi
squashmerge "${lsnap}" "${r}" "${rsnap}"
rm "${lsnap}"
fi
squashdelta "${rsnap}" "${todaysnap}" "${tempdir}/${reponame}-${rdate}-${today}.${algo}.sqdelta"
mv "${tempdir}/${reponame}-${rdate}-${today}.${algo}.sqdelta" "${mirrordir}/"
# remove the last snapshot used
rm "${rsnap}"
done
# finally, clean up the old deltas
rm -f "${mirrordir}/${reponame}"-*-"${yesterday}.${algo}.sqdelta"
fi
fi
# == here ${PWD} becomes ${mirrordir} ==
cd "${mirrordir}"
# create convenience -current symlink, for direct fetching
ln -s -f "${reponame}-${today}${ext}" "${reponame}-current${ext}"
done
# create checksums for snapshot and deltas
sha512sum -- *.sqfs *.sqdelta | \
gpg --yes -u "${signkeyid}" --clearsign \
--comment "Current: gentoo-${today}" --output sha512sum.txt.tmp -
mv sha512sum.txt.tmp sha512sum.txt
|
GitWeb