Raw
1 #!/bin/sh
2
3 test_description='git partial clone'
4
5 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
6 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
7
8 . ./test-lib.sh
9
10 # create a normal "src" repo where we can later create new commits.
11 # expect_1.oids will contain a list of the OIDs of all blobs.
12 test_expect_success 'setup normal src repo' '
13 echo "{print \$1}" >print_1.awk &&
14 echo "{print \$2}" >print_2.awk &&
15
16 git init src &&
17 for n in 1 2 3 4
18 do
19 echo "This is file: $n" > src/file.$n.txt &&
20 git -C src add file.$n.txt &&
21 git -C src commit -m "file $n" &&
22 git -C src ls-files -s file.$n.txt >>temp || return 1
23 done &&
24 awk -f print_2.awk <temp | sort >expect_1.oids &&
25 test_line_count = 4 expect_1.oids
26 '
27
28 # bare clone "src" giving "srv.bare" for use as our server.
29 test_expect_success 'setup bare clone for server' '
30 git clone --bare "file://$(pwd)/src" srv.bare &&
31 git -C srv.bare config --local uploadpack.allowfilter 1 &&
32 git -C srv.bare config --local uploadpack.allowanysha1inwant 1
33 '
34
35 # do basic partial clone from "srv.bare"
36 # confirm we are missing all of the known blobs.
37 # confirm partial clone was registered in the local config.
38 test_expect_success 'do partial clone 1' '
39 git clone --no-checkout --filter=blob:none "file://$(pwd)/srv.bare" pc1 &&
40
41 git -C pc1 rev-list --quiet --objects --missing=print HEAD >revs &&
42 awk -f print_1.awk revs |
43 sed "s/?//" |
44 sort >observed.oids &&
45
46 test_cmp expect_1.oids observed.oids &&
47 test "$(git -C pc1 config --local core.repositoryformatversion)" = "1" &&
48 test "$(git -C pc1 config --local remote.origin.promisor)" = "true" &&
49 test "$(git -C pc1 config --local remote.origin.partialclonefilter)" = "blob:none"
50 '
51
52 test_expect_success 'rev-list --missing=allow-promisor on partial clone' '
53 git -C pc1 rev-list --objects --missing=allow-promisor HEAD >actual &&
54 git -C pc1 rev-list --objects --missing=print HEAD >expect.raw &&
55 grep -v "^?" expect.raw >expect &&
56 test_cmp expect actual
57 '
58
59 test_expect_success 'verify that .promisor file contains refs fetched' '
60 ls pc1/.git/objects/pack/pack-*.promisor >promisorlist &&
61 test_line_count = 1 promisorlist &&
62 git -C srv.bare rev-parse --verify HEAD >headhash &&
63 test_grep "$(cat headhash) HEAD" $(cat promisorlist) &&
64 test_grep "$(cat headhash) refs/heads/main" $(cat promisorlist)
65 '
66
67 # checkout main to force dynamic object fetch of blobs at HEAD.
68 test_expect_success 'verify checkout with dynamic object fetch' '
69 git -C pc1 rev-list --quiet --objects --missing=print HEAD >observed &&
70 test_line_count = 4 observed &&
71 git -C pc1 checkout main &&
72 git -C pc1 rev-list --quiet --objects --missing=print HEAD >observed &&
73 test_line_count = 0 observed
74 '
75
76 # create new commits in "src" repo to establish a blame history on file.1.txt
77 # and push to "srv.bare".
78 test_expect_success 'push new commits to server' '
79 git -C src remote add srv "file://$(pwd)/srv.bare" &&
80 for x in a b c d e
81 do
82 echo "Mod file.1.txt $x" >>src/file.1.txt &&
83 git -C src add file.1.txt &&
84 git -C src commit -m "mod $x" || return 1
85 done &&
86 git -C src blame main -- file.1.txt >expect.blame &&
87 git -C src push -u srv main
88 '
89
90 # (partial) fetch in the partial clone repo from the promisor remote.
91 # verify that fetch inherited the filter-spec from the config and DOES NOT
92 # have the new blobs.
93 test_expect_success 'partial fetch inherits filter settings' '
94 git -C pc1 fetch origin &&
95 git -C pc1 rev-list --quiet --objects --missing=print \
96 main..origin/main >observed &&
97 test_line_count = 5 observed
98 '
99
100 test_expect_success 'partial fetch does not spawn rev-list connectivity check' '
101 test_when_finished "rm -rf connectivity-remote connectivity-client" &&
102 git init connectivity-remote &&
103 test_commit -C connectivity-remote one &&
104 git -C connectivity-remote config uploadpack.allowfilter 1 &&
105 git -C connectivity-remote config uploadpack.allowanysha1inwant 1 &&
106
107 git clone --no-checkout --filter=blob:none \
108 "file://$(pwd)/connectivity-remote" connectivity-client &&
109
110 # When doing a partial fetch where all tips are part of a promisor pack
111 # we want to skip the connectivity check, as these objects are allowed
112 # to not be fully connected.
113 test_commit -C connectivity-remote two &&
114 GIT_TRACE2_EVENT="$(pwd)/partial.trace" git -C connectivity-client fetch origin &&
115 test_subcommand_flex ! git rev-list --objects --stdin <partial.trace &&
116
117 # Otherwise, when doing a fetch where any of the tips is not part of a
118 # promisor pack, then we must run the connectivity check.
119 test_commit -C connectivity-remote three &&
120 GIT_TRACE2_EVENT="$(pwd)/full.trace" git -C connectivity-client fetch --no-filter origin &&
121 test_subcommand_flex git rev-list --objects --stdin <full.trace
122 '
123
124 # force dynamic object fetch using diff.
125 # we should only get 1 new blob (for the file in origin/main).
126 test_expect_success 'verify diff causes dynamic object fetch' '
127 git -C pc1 diff main..origin/main -- file.1.txt &&
128 git -C pc1 rev-list --quiet --objects --missing=print \
129 main..origin/main >observed &&
130 test_line_count = 4 observed
131 '
132
133 # force full dynamic object fetch of the file's history using blame.
134 # we should get the intermediate blobs for the file.
135 test_expect_success 'verify blame causes dynamic object fetch' '
136 git -C pc1 blame origin/main -- file.1.txt >observed.blame &&
137 test_cmp expect.blame observed.blame &&
138 git -C pc1 rev-list --quiet --objects --missing=print \
139 main..origin/main >observed &&
140 test_line_count = 0 observed
141 '
142
143 # create new commits in "src" repo to establish a history on file.2.txt
144 # and push to "srv.bare".
145 test_expect_success 'push new commits to server for file.2.txt' '
146 for x in a b c d e f
147 do
148 echo "Mod file.2.txt $x" >>src/file.2.txt &&
149 git -C src add file.2.txt &&
150 git -C src commit -m "mod $x" || return 1
151 done &&
152 git -C src push -u srv main
153 '
154
155 # Do FULL fetch by disabling inherited filter-spec using --no-filter.
156 # Verify we have all the new blobs.
157 test_expect_success 'override inherited filter-spec using --no-filter' '
158 git -C pc1 fetch --no-filter origin &&
159 git -C pc1 rev-list --quiet --objects --missing=print \
160 main..origin/main >observed &&
161 test_line_count = 0 observed
162 '
163
164 # create new commits in "src" repo to establish a history on file.3.txt
165 # and push to "srv.bare".
166 test_expect_success 'push new commits to server for file.3.txt' '
167 for x in a b c d e f
168 do
169 echo "Mod file.3.txt $x" >>src/file.3.txt &&
170 git -C src add file.3.txt &&
171 git -C src commit -m "mod $x" || return 1
172 done &&
173 git -C src push -u srv main
174 '
175
176 # Do a partial fetch and then try to manually fetch the missing objects.
177 # This can be used as the basis of a pre-command hook to bulk fetch objects
178 # perhaps combined with a command in dry-run mode.
179 test_expect_success 'manual prefetch of missing objects' '
180 git -C pc1 fetch --filter=blob:none origin &&
181
182 git -C pc1 rev-list --quiet --objects --missing=print \
183 main..origin/main >revs &&
184 awk -f print_1.awk revs |
185 sed "s/?//" |
186 sort >observed.oids &&
187
188 test_line_count = 6 observed.oids &&
189 git -C pc1 fetch-pack --stdin "file://$(pwd)/srv.bare" <observed.oids &&
190
191 git -C pc1 rev-list --quiet --objects --missing=print \
192 main..origin/main >revs &&
193 awk -f print_1.awk revs |
194 sed "s/?//" |
195 sort >observed.oids &&
196
197 test_line_count = 0 observed.oids
198 '
199
200 # create new commits in "src" repo to establish a history on file.4.txt
201 # and push to "srv.bare".
202 test_expect_success 'push new commits to server for file.4.txt' '
203 for x in a b c d e f
204 do
205 echo "Mod file.4.txt $x" >src/file.4.txt &&
206 if list_contains "a,b" "$x"; then
207 printf "%10000s" X >>src/file.4.txt
208 fi &&
209 if list_contains "c,d" "$x"; then
210 printf "%20000s" X >>src/file.4.txt
211 fi &&
212 git -C src add file.4.txt &&
213 git -C src commit -m "mod $x" || return 1
214 done &&
215 git -C src push -u srv main
216 '
217
218 # Do partial fetch to fetch smaller files; then verify that without --refetch
219 # applying a new filter does not refetch missing large objects. Then use
220 # --refetch to apply the new filter on existing commits. Test it under both
221 # protocol v2 & v0.
222 test_expect_success 'apply a different filter using --refetch' '
223 git -C pc1 fetch --filter=blob:limit=999 origin &&
224 git -C pc1 rev-list --quiet --objects --missing=print \
225 main..origin/main >observed &&
226 test_line_count = 4 observed &&
227
228 git -C pc1 fetch --filter=blob:limit=19999 --refetch origin &&
229 git -C pc1 rev-list --quiet --objects --missing=print \
230 main..origin/main >observed &&
231 test_line_count = 2 observed &&
232
233 git -c protocol.version=0 -C pc1 fetch --filter=blob:limit=29999 \
234 --refetch origin &&
235 git -C pc1 rev-list --quiet --objects --missing=print \
236 main..origin/main >observed &&
237 test_line_count = 0 observed
238 '
239
240 test_expect_success 'fetch --refetch works with a shallow clone' '
241 git clone --no-checkout --depth=1 --filter=blob:none "file://$(pwd)/srv.bare" pc1s &&
242 git -C pc1s rev-list --objects --missing=print HEAD >observed &&
243 test_line_count = 6 observed &&
244
245 GIT_TRACE=1 git -C pc1s fetch --filter=blob:limit=999 --refetch origin &&
246 git -C pc1s rev-list --objects --missing=print HEAD >observed &&
247 test_line_count = 6 observed
248 '
249
250 test_expect_success 'fetch --refetch triggers repacking' '
251 GIT_TRACE2_CONFIG_PARAMS=gc.autoPackLimit,maintenance.incremental-repack.auto &&
252 export GIT_TRACE2_CONFIG_PARAMS &&
253
254 GIT_TRACE2_EVENT="$PWD/trace1.event" \
255 git -C pc1 fetch --refetch origin &&
256 test_subcommand git maintenance run --auto --no-quiet --no-detach <trace1.event &&
257 test_grep \"param\":\"gc.autopacklimit\",\"value\":\"1\" trace1.event &&
258 test_grep \"param\":\"maintenance.incremental-repack.auto\",\"value\":\"-1\" trace1.event &&
259
260 GIT_TRACE2_EVENT="$PWD/trace2.event" \
261 git -c protocol.version=0 \
262 -c gc.autoPackLimit=0 \
263 -c maintenance.incremental-repack.auto=1234 \
264 -C pc1 fetch --refetch origin &&
265 test_subcommand git maintenance run --auto --no-quiet --no-detach <trace2.event &&
266 test_grep \"param\":\"gc.autopacklimit\",\"value\":\"0\" trace2.event &&
267 test_grep \"param\":\"maintenance.incremental-repack.auto\",\"value\":\"-1\" trace2.event &&
268
269 GIT_TRACE2_EVENT="$PWD/trace3.event" \
270 git -c protocol.version=0 \
271 -c gc.autoPackLimit=1234 \
272 -c maintenance.incremental-repack.auto=0 \
273 -C pc1 fetch --refetch origin &&
274 test_subcommand git maintenance run --auto --no-quiet --no-detach <trace3.event &&
275 test_grep \"param\":\"gc.autopacklimit\",\"value\":\"1\" trace3.event &&
276 test_grep \"param\":\"maintenance.incremental-repack.auto\",\"value\":\"0\" trace3.event
277 '
278
279 test_expect_success 'partial clone with transfer.fsckobjects=1 works with submodules' '
280 test_create_repo submodule &&
281 test_commit -C submodule mycommit &&
282
283 test_create_repo src_with_sub &&
284 git -C src_with_sub config uploadpack.allowfilter 1 &&
285 git -C src_with_sub config uploadpack.allowanysha1inwant 1 &&
286
287 test_config_global protocol.file.allow always &&
288
289 git -C src_with_sub submodule add "file://$(pwd)/submodule" mysub &&
290 git -C src_with_sub commit -m "commit with submodule" &&
291
292 git -c transfer.fsckobjects=1 \
293 clone --filter="blob:none" "file://$(pwd)/src_with_sub" dst &&
294 test_when_finished rm -rf dst
295 '
296
297 test_expect_success 'lazily fetched .gitmodules works' '
298 git clone --filter="blob:none" --no-checkout "file://$(pwd)/src_with_sub" dst &&
299 git -C dst fetch &&
300 test_when_finished rm -rf dst
301 '
302
303 test_expect_success 'partial clone with transfer.fsckobjects=1 uses index-pack --fsck-objects' '
304 git init src &&
305 test_commit -C src x &&
306 test_config -C src uploadpack.allowfilter 1 &&
307 test_config -C src uploadpack.allowanysha1inwant 1 &&
308
309 GIT_TRACE="$(pwd)/trace" git -c transfer.fsckobjects=1 \
310 clone --filter="blob:none" "file://$(pwd)/src" dst &&
311 test_grep "git index-pack.*--fsck-objects" trace
312 '
313
314 test_expect_success 'use fsck before and after manually fetching a missing subtree' '
315 # push new commit so server has a subtree
316 mkdir src/dir &&
317 echo "in dir" >src/dir/file.txt &&
318 git -C src add dir/file.txt &&
319 git -C src commit -m "file in dir" &&
320 git -C src push -u srv main &&
321 SUBTREE=$(git -C src rev-parse HEAD:dir) &&
322
323 rm -rf dst &&
324 git clone --no-checkout --filter=tree:0 "file://$(pwd)/srv.bare" dst &&
325 git -C dst fsck &&
326
327 # Make sure we only have commits, and all trees and blobs are missing.
328 git -C dst rev-list --missing=allow-any --objects main \
329 >fetched_objects &&
330 awk -f print_1.awk fetched_objects |
331 xargs -n1 git -C dst cat-file -t >fetched_types &&
332
333 sort -u fetched_types >unique_types.observed &&
334 echo commit >unique_types.expected &&
335 test_cmp unique_types.expected unique_types.observed &&
336
337 # Auto-fetch a tree with cat-file.
338 git -C dst cat-file -p $SUBTREE >tree_contents &&
339 test_grep file.txt tree_contents &&
340
341 # fsck still works after an auto-fetch of a tree.
342 git -C dst fsck &&
343
344 # Auto-fetch all remaining trees and blobs with --missing=error
345 git -C dst rev-list --missing=error --objects main >fetched_objects &&
346 test_line_count = 88 fetched_objects &&
347
348 awk -f print_1.awk fetched_objects |
349 xargs -n1 git -C dst cat-file -t >fetched_types &&
350
351 sort -u fetched_types >unique_types.observed &&
352 test_write_lines blob commit tree >unique_types.expected &&
353 test_cmp unique_types.expected unique_types.observed
354 '
355
356 test_expect_success 'implicitly construct combine: filter with repeated flags' '
357 GIT_TRACE=$(pwd)/trace git clone --bare \
358 --filter=blob:none --filter=tree:1 \
359 "file://$(pwd)/srv.bare" pc2 &&
360 test_grep "trace:.* git pack-objects .*--filter=combine:blob:none+tree:1" \
361 trace &&
362 git -C pc2 rev-list --objects --missing=allow-any HEAD >objects &&
363
364 # We should have gotten some root trees.
365 test_grep " $" objects &&
366 # Should not have gotten any non-root trees or blobs.
367 test_grep ! " ." objects &&
368
369 xargs -n 1 git -C pc2 cat-file -t <objects >types &&
370 sort -u types >unique_types.actual &&
371 test_write_lines commit tree >unique_types.expected &&
372 test_cmp unique_types.expected unique_types.actual
373 '
374
375 test_expect_success 'upload-pack complains of bogus filter config' '
376 printf 0000 |
377 test_must_fail git \
378 -c uploadpackfilter.tree.maxdepth \
379 upload-pack . >/dev/null 2>err &&
380 test_grep "unable to parse.*tree.maxdepth" err
381 '
382
383 test_expect_success 'upload-pack fails banned object filters' '
384 test_config -C srv.bare uploadpackfilter.blob:none.allow false &&
385 test_must_fail ok=sigpipe git clone --no-checkout --filter=blob:none \
386 "file://$(pwd)/srv.bare" pc3 2>err &&
387 test_grep "filter '\''blob:none'\'' not supported" err
388 '
389
390 test_expect_success 'upload-pack fails banned combine object filters' '
391 test_config -C srv.bare uploadpackfilter.allow false &&
392 test_config -C srv.bare uploadpackfilter.combine.allow true &&
393 test_config -C srv.bare uploadpackfilter.tree.allow true &&
394 test_config -C srv.bare uploadpackfilter.blob:none.allow false &&
395 test_must_fail ok=sigpipe git clone --no-checkout --filter=tree:1 \
396 --filter=blob:none "file://$(pwd)/srv.bare" pc3 2>err &&
397 test_grep "filter '\''blob:none'\'' not supported" err
398 '
399
400 test_expect_success 'upload-pack fails banned object filters with fallback' '
401 test_config -C srv.bare uploadpackfilter.allow false &&
402 test_must_fail ok=sigpipe git clone --no-checkout --filter=blob:none \
403 "file://$(pwd)/srv.bare" pc3 2>err &&
404 test_grep "filter '\''blob:none'\'' not supported" err
405 '
406
407 test_expect_success 'upload-pack limits tree depth filters' '
408 test_config -C srv.bare uploadpackfilter.allow false &&
409 test_config -C srv.bare uploadpackfilter.tree.allow true &&
410 test_config -C srv.bare uploadpackfilter.tree.maxDepth 0 &&
411 test_must_fail ok=sigpipe git clone --no-checkout --filter=tree:1 \
412 "file://$(pwd)/srv.bare" pc3 2>err &&
413 test_grep "tree filter allows max depth 0, but got 1" err &&
414
415 git clone --no-checkout --filter=tree:0 "file://$(pwd)/srv.bare" pc4 &&
416
417 test_config -C srv.bare uploadpackfilter.tree.maxDepth 5 &&
418 git clone --no-checkout --filter=tree:5 "file://$(pwd)/srv.bare" pc5 &&
419 test_must_fail ok=sigpipe git clone --no-checkout --filter=tree:6 \
420 "file://$(pwd)/srv.bare" pc6 2>err &&
421 test_grep "tree filter allows max depth 5, but got 6" err
422 '
423
424 test_expect_success 'partial clone fetches blobs pointed to by refs even if normally filtered out' '
425 rm -rf src dst &&
426 git init src &&
427 test_commit -C src x &&
428 test_config -C src uploadpack.allowfilter 1 &&
429 test_config -C src uploadpack.allowanysha1inwant 1 &&
430
431 # Create a tag pointing to a blob.
432 BLOB=$(echo blob-contents | git -C src hash-object --stdin -w) &&
433 git -C src tag myblob "$BLOB" &&
434
435 git clone --filter="blob:none" "file://$(pwd)/src" dst 2>err &&
436 test_grep ! "does not point to a valid object" err &&
437 git -C dst fsck
438 '
439
440 test_expect_success 'fetch what is specified on CLI even if already promised' '
441 rm -rf src dst.git &&
442 git init src &&
443 test_commit -C src foo &&
444 test_config -C src uploadpack.allowfilter 1 &&
445 test_config -C src uploadpack.allowanysha1inwant 1 &&
446
447 git hash-object --stdin <src/foo.t >blob &&
448
449 git clone --bare --filter=blob:none "file://$(pwd)/src" dst.git &&
450 git -C dst.git rev-list --objects --quiet --missing=print HEAD >missing_before &&
451 test_grep "?$(cat blob)" missing_before &&
452 git -C dst.git fetch origin $(cat blob) &&
453 git -C dst.git rev-list --objects --quiet --missing=print HEAD >missing_after &&
454 test_grep ! "?$(cat blob)" missing_after
455 '
456
457 test_expect_success 'setup src repo for sparse filter' '
458 git init sparse-src &&
459 git -C sparse-src config --local uploadpack.allowfilter 1 &&
460 git -C sparse-src config --local uploadpack.allowanysha1inwant 1 &&
461 test_commit -C sparse-src one &&
462 test_commit -C sparse-src two &&
463 echo /one.t >sparse-src/only-one &&
464 git -C sparse-src add . &&
465 git -C sparse-src commit -m "add sparse checkout files"
466 '
467
468 test_expect_success 'partial clone with sparse filter succeeds' '
469 rm -rf dst.git &&
470 git clone --no-local --bare \
471 --filter=sparse:oid=main:only-one \
472 sparse-src dst.git &&
473 (
474 cd dst.git &&
475 git rev-list --objects --missing=print HEAD >out &&
476 test_grep "^$(git rev-parse HEAD:one.t)" out &&
477 test_grep "^?$(git rev-parse HEAD:two.t)" out
478 )
479 '
480
481 test_expect_success 'partial clone with unresolvable sparse filter fails cleanly' '
482 rm -rf dst.git &&
483 test_must_fail git clone --no-local --bare \
484 --filter=sparse:oid=main:no-such-name \
485 sparse-src dst.git 2>err &&
486 test_grep "unable to access sparse blob in .main:no-such-name" err &&
487 test_must_fail git clone --no-local --bare \
488 --filter=sparse:oid=main \
489 sparse-src dst.git 2>err &&
490 test_grep "unable to parse sparse filter data in" err
491 '
492
493 setup_triangle () {
494 rm -rf big-blob.txt server client promisor-remote &&
495
496 printf "line %d\n" $(test_seq 1 100) >big-blob.txt &&
497
498 # Create a server with 2 commits: a commit with a big tree and a child
499 # commit with an incremental change. Also, create a partial clone
500 # client that only contains the first commit.
501 git init server &&
502 git -C server config --local uploadpack.allowfilter 1 &&
503 for i in $(test_seq 1 100)
504 do
505 echo "make the tree big" >server/file$i &&
506 git -C server add file$i || return 1
507 done &&
508 git -C server commit -m "initial" &&
509 git clone --bare --filter=tree:0 "file://$(pwd)/server" client &&
510 echo another line >>server/file1 &&
511 git -C server commit -am "incremental change" &&
512
513 # Create a promisor remote that only contains the tree and blob from
514 # the first commit.
515 git init promisor-remote &&
516 git -C server config --local uploadpack.allowanysha1inwant 1 &&
517 TREE_HASH=$(git -C server rev-parse HEAD~1^{tree}) &&
518 git -C promisor-remote fetch --keep "file://$(pwd)/server" "$TREE_HASH" &&
519 git -C promisor-remote count-objects -v >object-count &&
520 test_grep "count: 0" object-count &&
521 test_grep "in-pack: 2" object-count &&
522
523 # Set it as the promisor remote of client. Thus, whenever
524 # the client lazy fetches, the lazy fetch will succeed only if it is
525 # for this tree or blob.
526 test_commit -C promisor-remote one && # so that ref advertisement is not empty
527 git -C promisor-remote config --local uploadpack.allowanysha1inwant 1 &&
528 git -C client remote set-url origin "file://$(pwd)/promisor-remote"
529 }
530
531 # NEEDSWORK: The tests beginning with "fetch lazy-fetches" below only
532 # test that "fetch" avoid fetching trees and blobs, but not commits or
533 # tags. Revisit this if Git is ever taught to support partial clones
534 # with commits and/or tags filtered out.
535
536 test_expect_success 'fetch lazy-fetches only to resolve deltas' '
537 setup_triangle &&
538
539 # Exercise to make sure it works. Git will not fetch anything from the
540 # promisor remote other than for the big tree (because it needs to
541 # resolve the delta).
542 GIT_TRACE_PACKET="$(pwd)/trace" git -C client \
543 fetch "file://$(pwd)/server" main &&
544
545 # Verify the assumption that the client needed to fetch the delta base
546 # to resolve the delta.
547 git -C server rev-parse HEAD~1^{tree} >hash &&
548 test_grep "want $(cat hash)" trace
549 '
550
551 test_expect_success 'fetch lazy-fetches only to resolve deltas, protocol v2' '
552 setup_triangle &&
553
554 git -C server config --local protocol.version 2 &&
555 git -C client config --local protocol.version 2 &&
556 git -C promisor-remote config --local protocol.version 2 &&
557
558 # Exercise to make sure it works. Git will not fetch anything from the
559 # promisor remote other than for the big blob (because it needs to
560 # resolve the delta).
561 GIT_TRACE_PACKET="$(pwd)/trace" git -C client \
562 fetch "file://$(pwd)/server" main &&
563
564 # Verify that protocol version 2 was used.
565 test_grep "fetch< version 2" trace &&
566
567 # Verify the assumption that the client needed to fetch the delta base
568 # to resolve the delta.
569 git -C server rev-parse HEAD~1^{tree} >hash &&
570 test_grep "want $(cat hash)" trace
571 '
572
573 test_expect_success 'fetch does not lazy-fetch missing targets of its refs' '
574 rm -rf server client trace &&
575
576 test_create_repo server &&
577 test_config -C server uploadpack.allowfilter 1 &&
578 test_config -C server uploadpack.allowanysha1inwant 1 &&
579 test_commit -C server foo &&
580
581 git clone --filter=blob:none "file://$(pwd)/server" client &&
582 # Make all refs point to nothing by deleting all objects.
583 rm client/.git/objects/pack/* &&
584
585 test_commit -C server bar &&
586 GIT_TRACE_PACKET="$(pwd)/trace" git -C client fetch \
587 --no-tags --recurse-submodules=no \
588 origin refs/tags/bar &&
589 FOO_HASH=$(git -C server rev-parse foo) &&
590 test_grep ! "want $FOO_HASH" trace
591 '
592
593 # The following two tests must be in this order. It is important that
594 # the srv.bare repository did not have tags during clone, but has tags
595 # in the fetch.
596
597 test_expect_success 'verify fetch succeeds when asking for new tags' '
598 git clone --filter=blob:none "file://$(pwd)/srv.bare" tag-test &&
599 for i in I J K
600 do
601 test_commit -C src $i &&
602 git -C src branch $i || return 1
603 done &&
604 git -C srv.bare fetch --tags origin +refs/heads/*:refs/heads/* &&
605 git -C tag-test -c protocol.version=2 fetch --tags origin
606 '
607
608 test_expect_success 'verify fetch downloads only one pack when updating refs' '
609 git clone --filter=blob:none "file://$(pwd)/srv.bare" pack-test &&
610 ls pack-test/.git/objects/pack/*pack >pack-list &&
611 test_line_count = 2 pack-list &&
612 test_config -C pack-test maintenance.auto false &&
613 for i in A B C
614 do
615 test_commit -C src $i &&
616 git -C src branch $i || return 1
617 done &&
618 git -C srv.bare fetch origin +refs/heads/*:refs/heads/* &&
619 git -C pack-test fetch origin &&
620 ls pack-test/.git/objects/pack/*pack >pack-list &&
621 test_line_count = 3 pack-list
622 '
623
624 test_expect_success 'single-branch tag following respects partial clone' '
625 git clone --single-branch -b B --filter=blob:none \
626 "file://$(pwd)/srv.bare" single &&
627 git -C single rev-parse --verify refs/tags/B &&
628 git -C single rev-parse --verify refs/tags/A &&
629 test_must_fail git -C single rev-parse --verify refs/tags/C
630 '
631
632 test_expect_success 'fetch from a partial clone, protocol v0' '
633 rm -rf server client trace &&
634
635 # Pretend that the server is a partial clone
636 git init server &&
637 git -C server remote add a_remote "file://$(pwd)/" &&
638 test_config -C server core.repositoryformatversion 1 &&
639 test_config -C server extensions.partialclone a_remote &&
640 test_config -C server protocol.version 0 &&
641 test_commit -C server foo &&
642
643 # Fetch from the server
644 git init client &&
645 test_config -C client protocol.version 0 &&
646 test_commit -C client bar &&
647 GIT_TRACE_PACKET="$(pwd)/trace" git -C client fetch "file://$(pwd)/server" &&
648 test_grep ! "version 2" trace
649 '
650
651 test_expect_success 'fetch from a partial clone, protocol v2' '
652 rm -rf server client trace &&
653
654 # Pretend that the server is a partial clone
655 git init server &&
656 git -C server remote add a_remote "file://$(pwd)/" &&
657 test_config -C server core.repositoryformatversion 1 &&
658 test_config -C server extensions.partialclone a_remote &&
659 test_config -C server protocol.version 2 &&
660 test_commit -C server foo &&
661
662 # Fetch from the server
663 git init client &&
664 test_config -C client protocol.version 2 &&
665 test_commit -C client bar &&
666 GIT_TRACE_PACKET="$(pwd)/trace" git -C client fetch "file://$(pwd)/server" &&
667 test_grep "version 2" trace
668 '
669
670 test_expect_success 'repack does not loosen promisor objects' '
671 rm -rf client trace &&
672 git clone --bare --filter=blob:none "file://$(pwd)/srv.bare" client &&
673 test_when_finished "rm -rf client trace" &&
674 GIT_TRACE2_PERF="$(pwd)/trace" git -C client repack -A -d &&
675 test_grep "loosen_unused_packed_objects/loosened:0" trace
676 '
677
678 test_expect_success 'lazy-fetch in submodule succeeds' '
679 # setup
680 test_config_global protocol.file.allow always &&
681
682 test_when_finished "rm -rf src-sub" &&
683 git init src-sub &&
684 git -C src-sub config uploadpack.allowfilter 1 &&
685 git -C src-sub config uploadpack.allowanysha1inwant 1 &&
686
687 # This blob must be missing in the subsequent commit.
688 echo foo >src-sub/file &&
689 git -C src-sub add file &&
690 git -C src-sub commit -m "submodule one" &&
691 SUB_ONE=$(git -C src-sub rev-parse HEAD) &&
692
693 echo bar >src-sub/file &&
694 git -C src-sub add file &&
695 git -C src-sub commit -m "submodule two" &&
696 SUB_TWO=$(git -C src-sub rev-parse HEAD) &&
697
698 test_when_finished "rm -rf src-super" &&
699 git init src-super &&
700 git -C src-super config uploadpack.allowfilter 1 &&
701 git -C src-super config uploadpack.allowanysha1inwant 1 &&
702 git -C src-super submodule add ../src-sub src-sub &&
703
704 git -C src-super/src-sub checkout $SUB_ONE &&
705 git -C src-super add src-sub &&
706 git -C src-super commit -m "superproject one" &&
707
708 git -C src-super/src-sub checkout $SUB_TWO &&
709 git -C src-super add src-sub &&
710 git -C src-super commit -m "superproject two" &&
711
712 # the fetch
713 test_when_finished "rm -rf client" &&
714 git clone --filter=blob:none --also-filter-submodules \
715 --recurse-submodules "file://$(pwd)/src-super" client &&
716
717 # Trigger lazy-fetch from the superproject
718 git -C client restore --recurse-submodules --source=HEAD^ :/
719 '
720
721 test_expect_success 'after fetching descendants of non-promisor commits, gc works' '
722 # Setup
723 git init full &&
724 git -C full config uploadpack.allowfilter 1 &&
725 git -C full config uploadpack.allowanysha1inwant 1 &&
726 touch full/foo &&
727 git -C full add foo &&
728 git -C full commit -m "commit 1" &&
729 git -C full checkout --detach &&
730
731 # Partial clone and push commit to remote
732 git clone "file://$(pwd)/full" --filter=blob:none partial &&
733 echo "hello" > partial/foo &&
734 git -C partial commit -a -m "commit 2" &&
735 git -C partial push &&
736
737 # gc in partial repo
738 git -C partial gc --prune=now &&
739
740 # Create another commit in normal repo
741 git -C full checkout main &&
742 echo " world" >> full/foo &&
743 git -C full commit -a -m "commit 3" &&
744
745 # Pull from remote in partial repo, and run gc again
746 git -C partial pull &&
747 git -C partial gc --prune=now
748 '
749
750
751 . "$TEST_DIRECTORY"/lib-httpd.sh
752 start_httpd
753
754 # Converts bytes into their hexadecimal representation. For example,
755 # "printf 'ab\r\n' | hex_unpack" results in '61620d0a'.
756 hex_unpack () {
757 perl -e '$/ = undef; $input = <>; print unpack("H2" x length($input), $input)'
758 }
759
760 # Inserts $1 at the start of the string and every 2 characters thereafter.
761 intersperse () {
762 sed 's/\(..\)/'$1'\1/g'
763 }
764
765 # Create a one-time-script command to replace the existing packfile with $1.
766 replace_packfile () {
767 cp "$1" one-time-pack &&
768 write_script "$HTTPD_ROOT_PATH/one-time-script" <<-EOF
769 if grep packfile "\$1" >/dev/null
770 then
771 sed '/packfile/q' "\$1" &&
772 # The protocol requires that the packfile be sent in sideband
773 # 1, hence the extra \001 byte at the beginning.
774 printf "%04x\001" \$((\$(wc -c <"$PWD/one-time-pack") + 5)) &&
775 cat "$PWD/one-time-pack" &&
776 printf "0000"
777 else
778 cat "\$1"
779 fi
780 EOF
781 }
782
783 test_expect_success 'upon cloning, check that all refs point to objects' '
784 SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
785 rm -rf "$SERVER" repo &&
786 test_create_repo "$SERVER" &&
787 test_commit -C "$SERVER" foo &&
788 test_config -C "$SERVER" uploadpack.allowfilter 1 &&
789 test_config -C "$SERVER" uploadpack.allowanysha1inwant 1 &&
790
791 # Create a tag pointing to a blob.
792 BLOB=$(echo blob-contents | git -C "$SERVER" hash-object --stdin -w) &&
793 git -C "$SERVER" tag myblob "$BLOB" &&
794
795 # Craft a packfile not including that blob.
796 git -C "$SERVER" rev-parse HEAD |
797 git -C "$SERVER" pack-objects --stdout >incomplete.pack &&
798
799 # Replace the existing packfile with the crafted one. The protocol
800 # requires that the packfile be sent in sideband 1, hence the extra
801 # \x01 byte at the beginning.
802 replace_packfile incomplete.pack &&
803
804 # Use protocol v2 because the perl command looks for the "packfile"
805 # section header.
806 test_config -C "$SERVER" protocol.version 2 &&
807 test_must_fail git -c protocol.version=2 clone \
808 --filter=blob:none $HTTPD_URL/one_time_script/server repo 2>err &&
809
810 test_grep "did not send all necessary objects" err &&
811
812 # Ensure that the one-time-script script was used.
813 ! test -e "$HTTPD_ROOT_PATH/one-time-script"
814 '
815
816 test_expect_success 'when partial cloning, tolerate server not sending target of tag' '
817 SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
818 rm -rf "$SERVER" repo &&
819 test_create_repo "$SERVER" &&
820 test_commit -C "$SERVER" foo &&
821 test_config -C "$SERVER" uploadpack.allowfilter 1 &&
822 test_config -C "$SERVER" uploadpack.allowanysha1inwant 1 &&
823
824 # Create an annotated tag pointing to a blob.
825 BLOB=$(echo blob-contents | git -C "$SERVER" hash-object --stdin -w) &&
826 git -C "$SERVER" tag -m message -a myblob "$BLOB" &&
827
828 # Craft a packfile including the tag, but not the blob it points to.
829 # Also, omit objects referenced from HEAD in order to force a second
830 # fetch (to fetch missing objects) upon the automatic checkout that
831 # happens after a clone.
832 printf "%s\n%s\n--not\n%s\n%s\n" \
833 $(git -C "$SERVER" rev-parse HEAD) \
834 $(git -C "$SERVER" rev-parse myblob) \
835 $(git -C "$SERVER" rev-parse HEAD^{tree}) \
836 $(git -C "$SERVER" rev-parse myblob^{blob}) |
837 git -C "$SERVER" pack-objects --thin --stdout >incomplete.pack &&
838
839 # Replace the existing packfile with the crafted one. The protocol
840 # requires that the packfile be sent in sideband 1, hence the extra
841 # \x01 byte at the beginning.
842 replace_packfile incomplete.pack &&
843
844 # Use protocol v2 because the perl command looks for the "packfile"
845 # section header.
846 test_config -C "$SERVER" protocol.version 2 &&
847
848 # Exercise to make sure it works.
849 git -c protocol.version=2 clone \
850 --filter=blob:none $HTTPD_URL/one_time_script/server repo 2> err &&
851 test_grep ! "missing object referenced by" err &&
852
853 # Ensure that the one-time-script script was used.
854 ! test -e "$HTTPD_ROOT_PATH/one-time-script"
855 '
856
857 test_expect_success PERL_TEST_HELPERS 'tolerate server sending REF_DELTA against missing promisor objects' '
858 SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
859 rm -rf "$SERVER" repo &&
860 test_create_repo "$SERVER" &&
861 test_config -C "$SERVER" uploadpack.allowfilter 1 &&
862 test_config -C "$SERVER" uploadpack.allowanysha1inwant 1 &&
863
864 # Create a commit with 2 blobs to be used as delta bases.
865 for i in $(test_seq 10)
866 do
867 echo "this is a line" >>"$SERVER/foo.txt" &&
868 echo "this is another line" >>"$SERVER/have.txt" || return 1
869 done &&
870 git -C "$SERVER" add foo.txt have.txt &&
871 git -C "$SERVER" commit -m bar &&
872 git -C "$SERVER" rev-parse HEAD:foo.txt >deltabase_missing &&
873 git -C "$SERVER" rev-parse HEAD:have.txt >deltabase_have &&
874
875 # Clone. The client has deltabase_have but not deltabase_missing.
876 git -c protocol.version=2 clone --no-checkout \
877 --filter=blob:none $HTTPD_URL/one_time_script/server repo &&
878 git -C repo hash-object -w -- "$SERVER/have.txt" &&
879
880 # Sanity check to ensure that the client does not have
881 # deltabase_missing.
882 git -C repo rev-list --objects --ignore-missing \
883 -- $(cat deltabase_missing) >objlist &&
884 test_line_count = 0 objlist &&
885
886 # Another commit. This commit will be fetched by the client.
887 echo "abcdefghijklmnopqrstuvwxyz" >>"$SERVER/foo.txt" &&
888 echo "abcdefghijklmnopqrstuvwxyz" >>"$SERVER/have.txt" &&
889 git -C "$SERVER" add foo.txt have.txt &&
890 git -C "$SERVER" commit -m baz &&
891
892 # Pack a thin pack containing, among other things, HEAD:foo.txt
893 # delta-ed against HEAD^:foo.txt and HEAD:have.txt delta-ed against
894 # HEAD^:have.txt.
895 printf "%s\n--not\n%s\n" \
896 $(git -C "$SERVER" rev-parse HEAD) \
897 $(git -C "$SERVER" rev-parse HEAD^) |
898 git -C "$SERVER" pack-objects --thin --stdout >thin.pack &&
899
900 # Ensure that the pack contains one delta against HEAD^:foo.txt. Since
901 # the delta contains at least 26 novel characters, the size cannot be
902 # contained in 4 bits, so the object header will take up 2 bytes. The
903 # most significant nybble of the first byte is 0b1111 (0b1 to indicate
904 # that the header continues, and 0b111 to indicate REF_DELTA), followed
905 # by any 3 nybbles, then the OID of the delta base.
906 printf "f.,..%s" $(intersperse "," <deltabase_missing) >want &&
907 hex_unpack <thin.pack | intersperse "," >have &&
908 test_grep $(cat want) have &&
909
910 # Ensure that the pack contains one delta against HEAD^:have.txt,
911 # similar to the above.
912 printf "f.,..%s" $(intersperse "," <deltabase_have) >want &&
913 hex_unpack <thin.pack | intersperse "," >have &&
914 test_grep $(cat want) have &&
915
916 replace_packfile thin.pack &&
917
918 # Use protocol v2 because the perl command looks for the "packfile"
919 # section header.
920 test_config -C "$SERVER" protocol.version 2 &&
921
922 # Fetch the thin pack and ensure that index-pack is able to handle the
923 # REF_DELTA object with a missing promisor delta base.
924 GIT_TRACE_PACKET="$(pwd)/trace" git -C repo -c protocol.version=2 fetch &&
925
926 # Ensure that the missing delta base was directly fetched, but not the
927 # one that the client has.
928 test_grep "want $(cat deltabase_missing)" trace &&
929 test_grep ! "want $(cat deltabase_have)" trace &&
930
931 # Ensure that the one-time-script script was used.
932 ! test -e "$HTTPD_ROOT_PATH/one-time-script"
933 '
934
935 # DO NOT add non-httpd-specific tests here, because the last part of this
936 # test script is only executed when httpd is available and enabled.
937
938 test_done