b91ef548f86b0e250b8fdcd1b8b764c780218931
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 &&
37
38 git -C pc1 rev-list --quiet --objects --missing=print HEAD >revs &&
39 awk -f print_1.awk revs |
40 sed "s/?//" |
41 sort >observed.oids &&
42
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 "$(git -C pc1 config --local core.partialclonefilter)" = "blob:none"
47'
48
49# checkout master to force dynamic object fetch of blobs at HEAD.
50test_expect_success 'verify checkout with dynamic object fetch' '
51 git -C pc1 rev-list --quiet --objects --missing=print HEAD >observed &&
52 test_line_count = 4 observed &&
53 git -C pc1 checkout master &&
54 git -C pc1 rev-list --quiet --objects --missing=print HEAD >observed &&
55 test_line_count = 0 observed
56'
57
58# create new commits in "src" repo to establish a blame history on file.1.txt
59# and push to "srv.bare".
60test_expect_success 'push new commits to server' '
61 git -C src remote add srv "file://$(pwd)/srv.bare" &&
62 for x in a b c d e
63 do
64 echo "Mod file.1.txt $x" >>src/file.1.txt
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 &&
77 git -C pc1 rev-list --quiet --objects --missing=print \
78 master..origin/master >observed &&
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 &&
86 git -C pc1 rev-list --quiet --objects --missing=print \
87 master..origin/master >observed &&
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 &&
96 git -C pc1 rev-list --quiet --objects --missing=print \
97 master..origin/master >observed &&
98 test_line_count = 0 observed
99'
100
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
113# Do FULL fetch by disabling inherited filter-spec using --no-filter.
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 &&
117 git -C pc1 rev-list --quiet --objects --missing=print \
118 master..origin/master >observed &&
119 test_line_count = 0 observed
120'
121
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 $x"
130 done &&
131 git -C src push -u srv master
132'
133
134# Do a partial fetch and then try to manually fetch the missing objects.
135# This can be used as the basis of a pre-command hook to bulk fetch objects
136# perhaps combined with a command in dry-run mode.
137test_expect_success 'manual prefetch of missing objects' '
138 git -C pc1 fetch --filter=blob:none origin &&
139
140 git -C pc1 rev-list --quiet --objects --missing=print \
141 master..origin/master >revs &&
142 awk -f print_1.awk revs |
143 sed "s/?//" |
144 sort >observed.oids &&
145
146 test_line_count = 6 observed.oids &&
147 git -C pc1 fetch-pack --stdin "file://$(pwd)/srv.bare" <observed.oids &&
148
149 git -C pc1 rev-list --quiet --objects --missing=print \
150 master..origin/master >revs &&
151 awk -f print_1.awk revs |
152 sed "s/?//" |
153 sort >observed.oids &&
154
155 test_line_count = 0 observed.oids
156'
157
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
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 $SUBTREE >tree_contents &&
194 grep file.txt tree_contents &&
195
196 # fsck still works after an auto-fetch of a tree.
197 git -C dst fsck &&
198
199 # Auto-fetch all remaining trees and blobs with --missing=error
200 git -C dst rev-list --missing=error --objects master >fetched_objects &&
201 test_line_count = 70 fetched_objects &&
202
203 awk -f print_1.awk fetched_objects |
204 xargs -n1 git -C dst cat-file -t >fetched_types &&
205
206 sort -u fetched_types >unique_types.observed &&
207 test_write_lines blob commit tree >unique_types.expected &&
208 test_cmp unique_types.expected unique_types.observed
209'
210
211test_expect_success 'partial clone fetches blobs pointed to by refs even if normally filtered out' '
212 rm -rf src dst &&
213 git init src &&
214 test_commit -C src x &&
215 test_config -C src uploadpack.allowfilter 1 &&
216 test_config -C src uploadpack.allowanysha1inwant 1 &&
217
218 # Create a tag pointing to a blob.
219 BLOB=$(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
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
244. "$TEST_DIRECTORY"/lib-httpd.sh
245start_httpd
246
247# Converts bytes into their hexadecimal representation. For example,
248# "printf 'ab\r\n' | hex_unpack" results in '61620d0a'.
249hex_unpack () {
250 perl -e '$/ = 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"
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 "$SERVER" rev-parse HEAD |
282 git -C "$SERVER" pack-objects --stdout >incomplete.pack &&
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.
287 replace_packfile incomplete.pack &&
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 $HTTPD_URL/one_time_sed/server repo 2>err &&
294
295 test_i18ngrep "did not send all necessary objects" err &&
296
297 # Ensure that the one-time-sed script was used.
298 ! test -e "$HTTPD_ROOT_PATH/one-time-sed"
299'
300
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.
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" \
318 $(git -C "$SERVER" rev-parse HEAD) \
319 $(git -C "$SERVER" rev-parse myblob) \
320 $(git -C "$SERVER" rev-parse HEAD^{tree}) \
321 $(git -C "$SERVER" rev-parse myblob^{blob}) |
322 git -C "$SERVER" pack-objects --thin --stdout >incomplete.pack &&
323
324 # Replace the existing packfile with the crafted one. The protocol
325 # requires that the packfile be sent in sideband 1, hence the extra
326 # \x01 byte at the beginning.
327 replace_packfile incomplete.pack &&
328
329 # Use protocol v2 because the sed command looks for the "packfile"
330 # section header.
331 test_config -C "$SERVER" protocol.version 2 &&
332
333 # Exercise to make sure it works.
334 git -c protocol.version=2 clone \
335 --filter=blob:none $HTTPD_URL/one_time_sed/server repo 2> err &&
336 ! grep "missing object referenced by" err &&
337
338 # Ensure that the one-time-sed script was used.
339 ! test -e "$HTTPD_ROOT_PATH/one-time-sed"
340'
341
342test_expect_success 'tolerate server sending REF_DELTA against missing promisor objects' '
343 SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
344 rm -rf "$SERVER" repo &&
345 test_create_repo "$SERVER" &&
346 test_config -C "$SERVER" uploadpack.allowfilter 1 &&
347 test_config -C "$SERVER" uploadpack.allowanysha1inwant 1 &&
348
349 # Create a commit with 2 blobs to be used as delta bases.
350 for i in $(test_seq 10)
351 do
352 echo "this is a line" >>"$SERVER/foo.txt" &&
353 echo "this is another line" >>"$SERVER/have.txt"
354 done &&
355 git -C "$SERVER" add foo.txt have.txt &&
356 git -C "$SERVER" commit -m bar &&
357 git -C "$SERVER" rev-parse HEAD:foo.txt >deltabase_missing &&
358 git -C "$SERVER" rev-parse HEAD:have.txt >deltabase_have &&
359
360 # Clone. The client has deltabase_have but not deltabase_missing.
361 git -c protocol.version=2 clone --no-checkout \
362 --filter=blob:none $HTTPD_URL/one_time_sed/server repo &&
363 git -C repo hash-object -w -- "$SERVER/have.txt" &&
364
365 # Sanity check to ensure that the client does not have
366 # deltabase_missing.
367 git -C repo rev-list --objects --ignore-missing \
368 -- $(cat deltabase_missing) >objlist &&
369 test_line_count = 0 objlist &&
370
371 # Another commit. This commit will be fetched by the client.
372 echo "abcdefghijklmnopqrstuvwxyz" >>"$SERVER/foo.txt" &&
373 echo "abcdefghijklmnopqrstuvwxyz" >>"$SERVER/have.txt" &&
374 git -C "$SERVER" add foo.txt have.txt &&
375 git -C "$SERVER" commit -m baz &&
376
377 # Pack a thin pack containing, among other things, HEAD:foo.txt
378 # delta-ed against HEAD^:foo.txt and HEAD:have.txt delta-ed against
379 # HEAD^:have.txt.
380 printf "%s\n--not\n%s\n" \
381 $(git -C "$SERVER" rev-parse HEAD) \
382 $(git -C "$SERVER" rev-parse HEAD^) |
383 git -C "$SERVER" pack-objects --thin --stdout >thin.pack &&
384
385 # Ensure that the pack contains one delta against HEAD^:foo.txt. Since
386 # the delta contains at least 26 novel characters, the size cannot be
387 # contained in 4 bits, so the object header will take up 2 bytes. The
388 # most significant nybble of the first byte is 0b1111 (0b1 to indicate
389 # that the header continues, and 0b111 to indicate REF_DELTA), followed
390 # by any 3 nybbles, then the OID of the delta base.
391 printf "f.,..%s" $(intersperse "," <deltabase_missing) >want &&
392 hex_unpack <thin.pack | intersperse "," >have &&
393 grep $(cat want) have &&
394
395 # Ensure that the pack contains one delta against HEAD^:have.txt,
396 # similar to the above.
397 printf "f.,..%s" $(intersperse "," <deltabase_have) >want &&
398 hex_unpack <thin.pack | intersperse "," >have &&
399 grep $(cat want) have &&
400
401 replace_packfile thin.pack &&
402
403 # Use protocol v2 because the sed command looks for the "packfile"
404 # section header.
405 test_config -C "$SERVER" protocol.version 2 &&
406
407 # Fetch the thin pack and ensure that index-pack is able to handle the
408 # REF_DELTA object with a missing promisor delta base.
409 GIT_TRACE_PACKET="$(pwd)/trace" git -C repo -c protocol.version=2 fetch &&
410
411 # Ensure that the missing delta base was directly fetched, but not the
412 # one that the client has.
413 grep "want $(cat deltabase_missing)" trace &&
414 ! grep "want $(cat deltabase_have)" trace &&
415
416 # Ensure that the one-time-sed script was used.
417 ! test -e "$HTTPD_ROOT_PATH/one-time-sed"
418'
419
420test_done