t5616: refactor packfile replacement
[git/git.git] / t / t5616-partial-clone.sh
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1#!/bin/sh
2
3test_description='git partial clone'
4
5. ./test-lib.sh
6
7# create a normal "src" repo where we can later create new commits.
8# expect_1.oids will contain a list of the OIDs of all blobs.
9test_expect_success 'setup normal src repo' '
10 echo "{print \$1}" >print_1.awk &&
11 echo "{print \$2}" >print_2.awk &&
12
13 git init src &&
14 for n in 1 2 3 4
15 do
16 echo "This is file: $n" > src/file.$n.txt
17 git -C src add file.$n.txt
18 git -C src commit -m "file $n"
19 git -C src ls-files -s file.$n.txt >>temp
20 done &&
21 awk -f print_2.awk <temp | sort >expect_1.oids &&
22 test_line_count = 4 expect_1.oids
23'
24
25# bare clone "src" giving "srv.bare" for use as our server.
26test_expect_success 'setup bare clone for server' '
27 git clone --bare "file://$(pwd)/src" srv.bare &&
28 git -C srv.bare config --local uploadpack.allowfilter 1 &&
29 git -C srv.bare config --local uploadpack.allowanysha1inwant 1
30'
31
32# do basic partial clone from "srv.bare"
33# confirm we are missing all of the known blobs.
34# confirm partial clone was registered in the local config.
35test_expect_success 'do partial clone 1' '
36 git clone --no-checkout --filter=blob:none "file://$(pwd)/srv.bare" pc1 &&
bdbc17e8 37
8d6ba495 38 git -C pc1 rev-list --quiet --objects --missing=print HEAD >revs &&
61de0ff6 39 awk -f print_1.awk revs |
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40 sed "s/?//" |
41 sort >observed.oids &&
42
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43 test_cmp expect_1.oids observed.oids &&
44 test "$(git -C pc1 config --local core.repositoryformatversion)" = "1" &&
45 test "$(git -C pc1 config --local extensions.partialclone)" = "origin" &&
46 test "$(git -C pc1 config --local core.partialclonefilter)" = "blob:none"
47'
48
49# checkout master to force dynamic object fetch of blobs at HEAD.
50test_expect_success 'verify checkout with dynamic object fetch' '
8d6ba495 51 git -C pc1 rev-list --quiet --objects --missing=print HEAD >observed &&
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52 test_line_count = 4 observed &&
53 git -C pc1 checkout master &&
8d6ba495 54 git -C pc1 rev-list --quiet --objects --missing=print HEAD >observed &&
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55 test_line_count = 0 observed
56'
57
58# create new commits in "src" repo to establish a blame history on file.1.txt
59# and push to "srv.bare".
60test_expect_success 'push new commits to server' '
61 git -C src remote add srv "file://$(pwd)/srv.bare" &&
62 for x in a b c d e
63 do
aa57b871 64 echo "Mod file.1.txt $x" >>src/file.1.txt
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65 git -C src add file.1.txt
66 git -C src commit -m "mod $x"
67 done &&
68 git -C src blame master -- file.1.txt >expect.blame &&
69 git -C src push -u srv master
70'
71
72# (partial) fetch in the partial clone repo from the promisor remote.
73# verify that fetch inherited the filter-spec from the config and DOES NOT
74# have the new blobs.
75test_expect_success 'partial fetch inherits filter settings' '
76 git -C pc1 fetch origin &&
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77 git -C pc1 rev-list --quiet --objects --missing=print \
78 master..origin/master >observed &&
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79 test_line_count = 5 observed
80'
81
82# force dynamic object fetch using diff.
83# we should only get 1 new blob (for the file in origin/master).
84test_expect_success 'verify diff causes dynamic object fetch' '
85 git -C pc1 diff master..origin/master -- file.1.txt &&
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86 git -C pc1 rev-list --quiet --objects --missing=print \
87 master..origin/master >observed &&
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88 test_line_count = 4 observed
89'
90
91# force full dynamic object fetch of the file's history using blame.
92# we should get the intermediate blobs for the file.
93test_expect_success 'verify blame causes dynamic object fetch' '
94 git -C pc1 blame origin/master -- file.1.txt >observed.blame &&
95 test_cmp expect.blame observed.blame &&
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96 git -C pc1 rev-list --quiet --objects --missing=print \
97 master..origin/master >observed &&
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98 test_line_count = 0 observed
99'
100
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101# create new commits in "src" repo to establish a history on file.2.txt
102# and push to "srv.bare".
103test_expect_success 'push new commits to server for file.2.txt' '
104 for x in a b c d e f
105 do
106 echo "Mod file.2.txt $x" >>src/file.2.txt
107 git -C src add file.2.txt
108 git -C src commit -m "mod $x"
109 done &&
110 git -C src push -u srv master
111'
112
3aa6694f 113# Do FULL fetch by disabling inherited filter-spec using --no-filter.
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114# Verify we have all the new blobs.
115test_expect_success 'override inherited filter-spec using --no-filter' '
116 git -C pc1 fetch --no-filter origin &&
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117 git -C pc1 rev-list --quiet --objects --missing=print \
118 master..origin/master >observed &&
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119 test_line_count = 0 observed
120'
121
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122# create new commits in "src" repo to establish a history on file.3.txt
123# and push to "srv.bare".
124test_expect_success 'push new commits to server for file.3.txt' '
125 for x in a b c d e f
126 do
127 echo "Mod file.3.txt $x" >>src/file.3.txt
128 git -C src add file.3.txt
129 git -C src commit -m "mod $x"
130 done &&
131 git -C src push -u srv master
132'
133
134# Do a partial fetch and then try to manually fetch the missing objects.
135# This can be used as the basis of a pre-command hook to bulk fetch objects
136# perhaps combined with a command in dry-run mode.
137test_expect_success 'manual prefetch of missing objects' '
138 git -C pc1 fetch --filter=blob:none origin &&
bdbc17e8 139
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140 git -C pc1 rev-list --quiet --objects --missing=print \
141 master..origin/master >revs &&
61de0ff6 142 awk -f print_1.awk revs |
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143 sed "s/?//" |
144 sort >observed.oids &&
145
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146 test_line_count = 6 observed.oids &&
147 git -C pc1 fetch-pack --stdin "file://$(pwd)/srv.bare" <observed.oids &&
bdbc17e8 148
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149 git -C pc1 rev-list --quiet --objects --missing=print \
150 master..origin/master >revs &&
61de0ff6 151 awk -f print_1.awk revs |
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152 sed "s/?//" |
153 sort >observed.oids &&
154
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155 test_line_count = 0 observed.oids
156'
157
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158test_expect_success 'partial clone with transfer.fsckobjects=1 uses index-pack --fsck-objects' '
159 git init src &&
160 test_commit -C src x &&
161 test_config -C src uploadpack.allowfilter 1 &&
162 test_config -C src uploadpack.allowanysha1inwant 1 &&
163
164 GIT_TRACE="$(pwd)/trace" git -c transfer.fsckobjects=1 \
165 clone --filter="blob:none" "file://$(pwd)/src" dst &&
166 grep "git index-pack.*--fsck-objects" trace
167'
168
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169test_expect_success 'use fsck before and after manually fetching a missing subtree' '
170 # push new commit so server has a subtree
171 mkdir src/dir &&
172 echo "in dir" >src/dir/file.txt &&
173 git -C src add dir/file.txt &&
174 git -C src commit -m "file in dir" &&
175 git -C src push -u srv master &&
176 SUBTREE=$(git -C src rev-parse HEAD:dir) &&
177
178 rm -rf dst &&
179 git clone --no-checkout --filter=tree:0 "file://$(pwd)/srv.bare" dst &&
180 git -C dst fsck &&
181
182 # Make sure we only have commits, and all trees and blobs are missing.
183 git -C dst rev-list --missing=allow-any --objects master \
184 >fetched_objects &&
185 awk -f print_1.awk fetched_objects |
186 xargs -n1 git -C dst cat-file -t >fetched_types &&
187
188 sort -u fetched_types >unique_types.observed &&
189 echo commit >unique_types.expected &&
190 test_cmp unique_types.expected unique_types.observed &&
191
192 # Auto-fetch a tree with cat-file.
193 git -C dst cat-file -p $SUBTREE >tree_contents &&
194 grep file.txt tree_contents &&
195
196 # fsck still works after an auto-fetch of a tree.
197 git -C dst fsck &&
198
199 # Auto-fetch all remaining trees and blobs with --missing=error
200 git -C dst rev-list --missing=error --objects master >fetched_objects &&
201 test_line_count = 70 fetched_objects &&
202
203 awk -f print_1.awk fetched_objects |
204 xargs -n1 git -C dst cat-file -t >fetched_types &&
205
206 sort -u fetched_types >unique_types.observed &&
d9e6d094 207 test_write_lines blob commit tree >unique_types.expected &&
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208 test_cmp unique_types.expected unique_types.observed
209'
210
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211test_expect_success 'partial clone fetches blobs pointed to by refs even if normally filtered out' '
212 rm -rf src dst &&
213 git init src &&
214 test_commit -C src x &&
215 test_config -C src uploadpack.allowfilter 1 &&
216 test_config -C src uploadpack.allowanysha1inwant 1 &&
217
218 # Create a tag pointing to a blob.
219 BLOB=$(echo blob-contents | git -C src hash-object --stdin -w) &&
220 git -C src tag myblob "$BLOB" &&
221
222 git clone --filter="blob:none" "file://$(pwd)/src" dst 2>err &&
223 ! grep "does not point to a valid object" err &&
224 git -C dst fsck
225'
226
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227test_expect_success 'fetch what is specified on CLI even if already promised' '
228 rm -rf src dst.git &&
229 git init src &&
230 test_commit -C src foo &&
231 test_config -C src uploadpack.allowfilter 1 &&
232 test_config -C src uploadpack.allowanysha1inwant 1 &&
233
234 git hash-object --stdin <src/foo.t >blob &&
235
236 git clone --bare --filter=blob:none "file://$(pwd)/src" dst.git &&
237 git -C dst.git rev-list --objects --quiet --missing=print HEAD >missing_before &&
238 grep "?$(cat blob)" missing_before &&
239 git -C dst.git fetch origin $(cat blob) &&
240 git -C dst.git rev-list --objects --quiet --missing=print HEAD >missing_after &&
241 ! grep "?$(cat blob)" missing_after
242'
243
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244. "$TEST_DIRECTORY"/lib-httpd.sh
245start_httpd
246
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247# Converts bytes into their hexadecimal representation. For example,
248# "printf 'ab\r\n' | hex_unpack" results in '61620d0a'.
249hex_unpack () {
250 perl -e '$/ = undef; $input = <>; print unpack("H2" x length($input), $input)'
251}
252
253# Inserts $1 at the start of the string and every 2 characters thereafter.
254intersperse () {
255 sed 's/\(..\)/'$1'\1/g'
256}
257
258# Create a one-time-sed command to replace the existing packfile with $1.
259replace_packfile () {
260 # The protocol requires that the packfile be sent in sideband 1, hence
261 # the extra \x01 byte at the beginning.
262 printf "1,/packfile/!c %04x\\\\x01%s0000" \
263 "$(($(wc -c <$1) + 5))" \
264 "$(hex_unpack <$1 | intersperse '\\x')" \
265 >"$HTTPD_ROOT_PATH/one-time-sed"
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266}
267
268test_expect_success 'upon cloning, check that all refs point to objects' '
269 SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
270 rm -rf "$SERVER" repo &&
271 test_create_repo "$SERVER" &&
272 test_commit -C "$SERVER" foo &&
273 test_config -C "$SERVER" uploadpack.allowfilter 1 &&
274 test_config -C "$SERVER" uploadpack.allowanysha1inwant 1 &&
275
276 # Create a tag pointing to a blob.
277 BLOB=$(echo blob-contents | git -C "$SERVER" hash-object --stdin -w) &&
278 git -C "$SERVER" tag myblob "$BLOB" &&
279
280 # Craft a packfile not including that blob.
281 git -C "$SERVER" rev-parse HEAD |
bdbc17e8 282 git -C "$SERVER" pack-objects --stdout >incomplete.pack &&
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283
284 # Replace the existing packfile with the crafted one. The protocol
285 # requires that the packfile be sent in sideband 1, hence the extra
286 # \x01 byte at the beginning.
385d1bfd 287 replace_packfile incomplete.pack &&
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288
289 # Use protocol v2 because the sed command looks for the "packfile"
290 # section header.
291 test_config -C "$SERVER" protocol.version 2 &&
292 test_must_fail git -c protocol.version=2 clone \
293 --filter=blob:none $HTTPD_URL/one_time_sed/server repo 2>err &&
294
3813a89f 295 test_i18ngrep "did not send all necessary objects" err &&
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296
297 # Ensure that the one-time-sed script was used.
298 ! test -e "$HTTPD_ROOT_PATH/one-time-sed"
299'
300
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301test_expect_success 'when partial cloning, tolerate server not sending target of tag' '
302 SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
303 rm -rf "$SERVER" repo &&
304 test_create_repo "$SERVER" &&
305 test_commit -C "$SERVER" foo &&
306 test_config -C "$SERVER" uploadpack.allowfilter 1 &&
307 test_config -C "$SERVER" uploadpack.allowanysha1inwant 1 &&
308
309 # Create an annotated tag pointing to a blob.
310 BLOB=$(echo blob-contents | git -C "$SERVER" hash-object --stdin -w) &&
311 git -C "$SERVER" tag -m message -a myblob "$BLOB" &&
312
313 # Craft a packfile including the tag, but not the blob it points to.
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314 # Also, omit objects referenced from HEAD in order to force a second
315 # fetch (to fetch missing objects) upon the automatic checkout that
316 # happens after a clone.
317 printf "%s\n%s\n--not\n%s\n%s\n" \
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318 $(git -C "$SERVER" rev-parse HEAD) \
319 $(git -C "$SERVER" rev-parse myblob) \
8c4cc326 320 $(git -C "$SERVER" rev-parse HEAD^{tree}) \
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321 $(git -C "$SERVER" rev-parse myblob^{blob}) |
322 git -C "$SERVER" pack-objects --thin --stdout >incomplete.pack &&
323
324 # Replace the existing packfile with the crafted one. The protocol
325 # requires that the packfile be sent in sideband 1, hence the extra
326 # \x01 byte at the beginning.
385d1bfd 327 replace_packfile incomplete.pack &&
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328
329 # Use protocol v2 because the sed command looks for the "packfile"
330 # section header.
331 test_config -C "$SERVER" protocol.version 2 &&
332
333 # Exercise to make sure it works.
334 git -c protocol.version=2 clone \
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335 --filter=blob:none $HTTPD_URL/one_time_sed/server repo 2> err &&
336 ! grep "missing object referenced by" err &&
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337
338 # Ensure that the one-time-sed script was used.
339 ! test -e "$HTTPD_ROOT_PATH/one-time-sed"
340'
341
35a7ae95 342test_done