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 remote.origin.promisor)" = "true" &&
46 test "$(git -C pc1 config --local remote.origin.partialclonefilter)" = "blob:none"
47'
48
49# checkout master to force dynamic object fetch of blobs at HEAD.
50test_expect_success 'verify checkout with dynamic object fetch' '
51 git -C pc1 rev-list --quiet --objects --missing=print HEAD >observed &&
52 test_line_count = 4 observed &&
53 git -C pc1 checkout master &&
54 git -C pc1 rev-list --quiet --objects --missing=print HEAD >observed &&
55 test_line_count = 0 observed
56'
57
58# create new commits in "src" repo to establish a blame history on file.1.txt
59# and push to "srv.bare".
60test_expect_success 'push new commits to server' '
61 git -C src remote add srv "file://$(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 $SUBTREE >tree_contents &&
194 grep file.txt tree_contents &&
195
196 # fsck still works after an auto-fetch of a tree.
197 git -C dst fsck &&
198
199 # Auto-fetch all remaining trees and blobs with --missing=error
200 git -C dst rev-list --missing=error --objects master >fetched_objects &&
201 test_line_count = 70 fetched_objects &&
202
203 awk -f print_1.awk fetched_objects |
204 xargs -n1 git -C dst cat-file -t >fetched_types &&
205
206 sort -u fetched_types >unique_types.observed &&
207 test_write_lines blob commit tree >unique_types.expected &&
208 test_cmp unique_types.expected unique_types.observed
209'
210
211test_expect_success 'implicitly construct combine: filter with repeated flags' '
212 GIT_TRACE=$(pwd)/trace git clone --bare \
213 --filter=blob:none --filter=tree:1 \
214 "file://$(pwd)/srv.bare" pc2 &&
215 grep "trace:.* git pack-objects .*--filter=combine:blob:none+tree:1" \
216 trace &&
217 git -C pc2 rev-list --objects --missing=allow-any HEAD >objects &&
218
219 # We should have gotten some root trees.
220 grep " $" objects &&
221 # Should not have gotten any non-root trees or blobs.
222 ! grep " ." objects &&
223
224 xargs -n 1 git -C pc2 cat-file -t <objects >types &&
225 sort -u types >unique_types.actual &&
226 test_write_lines commit tree >unique_types.expected &&
227 test_cmp unique_types.expected unique_types.actual
228'
229
230test_expect_success 'partial clone fetches blobs pointed to by refs even if normally filtered out' '
231 rm -rf src dst &&
232 git init src &&
233 test_commit -C src x &&
234 test_config -C src uploadpack.allowfilter 1 &&
235 test_config -C src uploadpack.allowanysha1inwant 1 &&
236
237 # Create a tag pointing to a blob.
238 BLOB=$(echo blob-contents | git -C src hash-object --stdin -w) &&
239 git -C src tag myblob "$BLOB" &&
240
241 git clone --filter="blob:none" "file://$(pwd)/src" dst 2>err &&
242 ! grep "does not point to a valid object" err &&
243 git -C dst fsck
244'
245
246test_expect_success 'fetch what is specified on CLI even if already promised' '
247 rm -rf src dst.git &&
248 git init src &&
249 test_commit -C src foo &&
250 test_config -C src uploadpack.allowfilter 1 &&
251 test_config -C src uploadpack.allowanysha1inwant 1 &&
252
253 git hash-object --stdin <src/foo.t >blob &&
254
255 git clone --bare --filter=blob:none "file://$(pwd)/src" dst.git &&
256 git -C dst.git rev-list --objects --quiet --missing=print HEAD >missing_before &&
257 grep "?$(cat blob)" missing_before &&
258 git -C dst.git fetch origin $(cat blob) &&
259 git -C dst.git rev-list --objects --quiet --missing=print HEAD >missing_after &&
260 ! grep "?$(cat blob)" missing_after
261'
262
263. "$TEST_DIRECTORY"/lib-httpd.sh
264start_httpd
265
266# Converts bytes into their hexadecimal representation. For example,
267# "printf 'ab\r\n' | hex_unpack" results in '61620d0a'.
268hex_unpack () {
269 perl -e '$/ = undef; $input = <>; print unpack("H2" x length($input), $input)'
270}
271
272# Inserts $1 at the start of the string and every 2 characters thereafter.
273intersperse () {
274 sed 's/\(..\)/'$1'\1/g'
275}
276
277# Create a one-time-sed command to replace the existing packfile with $1.
278replace_packfile () {
279 # The protocol requires that the packfile be sent in sideband 1, hence
280 # the extra \x01 byte at the beginning.
281 printf "1,/packfile/!c %04x\\\\x01%s0000" \
282 "$(($(wc -c <$1) + 5))" \
283 "$(hex_unpack <$1 | intersperse '\\x')" \
284 >"$HTTPD_ROOT_PATH/one-time-sed"
285}
286
287test_expect_success 'upon cloning, check that all refs point to objects' '
288 SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
289 rm -rf "$SERVER" repo &&
290 test_create_repo "$SERVER" &&
291 test_commit -C "$SERVER" foo &&
292 test_config -C "$SERVER" uploadpack.allowfilter 1 &&
293 test_config -C "$SERVER" uploadpack.allowanysha1inwant 1 &&
294
295 # Create a tag pointing to a blob.
296 BLOB=$(echo blob-contents | git -C "$SERVER" hash-object --stdin -w) &&
297 git -C "$SERVER" tag myblob "$BLOB" &&
298
299 # Craft a packfile not including that blob.
300 git -C "$SERVER" rev-parse HEAD |
301 git -C "$SERVER" pack-objects --stdout >incomplete.pack &&
302
303 # Replace the existing packfile with the crafted one. The protocol
304 # requires that the packfile be sent in sideband 1, hence the extra
305 # \x01 byte at the beginning.
306 replace_packfile incomplete.pack &&
307
308 # Use protocol v2 because the sed command looks for the "packfile"
309 # section header.
310 test_config -C "$SERVER" protocol.version 2 &&
311 test_must_fail git -c protocol.version=2 clone \
312 --filter=blob:none $HTTPD_URL/one_time_sed/server repo 2>err &&
313
314 test_i18ngrep "did not send all necessary objects" err &&
315
316 # Ensure that the one-time-sed script was used.
317 ! test -e "$HTTPD_ROOT_PATH/one-time-sed"
318'
319
320test_expect_success 'when partial cloning, tolerate server not sending target of tag' '
321 SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
322 rm -rf "$SERVER" repo &&
323 test_create_repo "$SERVER" &&
324 test_commit -C "$SERVER" foo &&
325 test_config -C "$SERVER" uploadpack.allowfilter 1 &&
326 test_config -C "$SERVER" uploadpack.allowanysha1inwant 1 &&
327
328 # Create an annotated tag pointing to a blob.
329 BLOB=$(echo blob-contents | git -C "$SERVER" hash-object --stdin -w) &&
330 git -C "$SERVER" tag -m message -a myblob "$BLOB" &&
331
332 # Craft a packfile including the tag, but not the blob it points to.
333 # Also, omit objects referenced from HEAD in order to force a second
334 # fetch (to fetch missing objects) upon the automatic checkout that
335 # happens after a clone.
336 printf "%s\n%s\n--not\n%s\n%s\n" \
337 $(git -C "$SERVER" rev-parse HEAD) \
338 $(git -C "$SERVER" rev-parse myblob) \
339 $(git -C "$SERVER" rev-parse HEAD^{tree}) \
340 $(git -C "$SERVER" rev-parse myblob^{blob}) |
341 git -C "$SERVER" pack-objects --thin --stdout >incomplete.pack &&
342
343 # Replace the existing packfile with the crafted one. The protocol
344 # requires that the packfile be sent in sideband 1, hence the extra
345 # \x01 byte at the beginning.
346 replace_packfile incomplete.pack &&
347
348 # Use protocol v2 because the sed command looks for the "packfile"
349 # section header.
350 test_config -C "$SERVER" protocol.version 2 &&
351
352 # Exercise to make sure it works.
353 git -c protocol.version=2 clone \
354 --filter=blob:none $HTTPD_URL/one_time_sed/server repo 2> err &&
355 ! grep "missing object referenced by" err &&
356
357 # Ensure that the one-time-sed script was used.
358 ! test -e "$HTTPD_ROOT_PATH/one-time-sed"
359'
360
361test_expect_success 'tolerate server sending REF_DELTA against missing promisor objects' '
362 SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
363 rm -rf "$SERVER" repo &&
364 test_create_repo "$SERVER" &&
365 test_config -C "$SERVER" uploadpack.allowfilter 1 &&
366 test_config -C "$SERVER" uploadpack.allowanysha1inwant 1 &&
367
368 # Create a commit with 2 blobs to be used as delta bases.
369 for i in $(test_seq 10)
370 do
371 echo "this is a line" >>"$SERVER/foo.txt" &&
372 echo "this is another line" >>"$SERVER/have.txt"
373 done &&
374 git -C "$SERVER" add foo.txt have.txt &&
375 git -C "$SERVER" commit -m bar &&
376 git -C "$SERVER" rev-parse HEAD:foo.txt >deltabase_missing &&
377 git -C "$SERVER" rev-parse HEAD:have.txt >deltabase_have &&
378
379 # Clone. The client has deltabase_have but not deltabase_missing.
380 git -c protocol.version=2 clone --no-checkout \
381 --filter=blob:none $HTTPD_URL/one_time_sed/server repo &&
382 git -C repo hash-object -w -- "$SERVER/have.txt" &&
383
384 # Sanity check to ensure that the client does not have
385 # deltabase_missing.
386 git -C repo rev-list --objects --ignore-missing \
387 -- $(cat deltabase_missing) >objlist &&
388 test_line_count = 0 objlist &&
389
390 # Another commit. This commit will be fetched by the client.
391 echo "abcdefghijklmnopqrstuvwxyz" >>"$SERVER/foo.txt" &&
392 echo "abcdefghijklmnopqrstuvwxyz" >>"$SERVER/have.txt" &&
393 git -C "$SERVER" add foo.txt have.txt &&
394 git -C "$SERVER" commit -m baz &&
395
396 # Pack a thin pack containing, among other things, HEAD:foo.txt
397 # delta-ed against HEAD^:foo.txt and HEAD:have.txt delta-ed against
398 # HEAD^:have.txt.
399 printf "%s\n--not\n%s\n" \
400 $(git -C "$SERVER" rev-parse HEAD) \
401 $(git -C "$SERVER" rev-parse HEAD^) |
402 git -C "$SERVER" pack-objects --thin --stdout >thin.pack &&
403
404 # Ensure that the pack contains one delta against HEAD^:foo.txt. Since
405 # the delta contains at least 26 novel characters, the size cannot be
406 # contained in 4 bits, so the object header will take up 2 bytes. The
407 # most significant nybble of the first byte is 0b1111 (0b1 to indicate
408 # that the header continues, and 0b111 to indicate REF_DELTA), followed
409 # by any 3 nybbles, then the OID of the delta base.
410 printf "f.,..%s" $(intersperse "," <deltabase_missing) >want &&
411 hex_unpack <thin.pack | intersperse "," >have &&
412 grep $(cat want) have &&
413
414 # Ensure that the pack contains one delta against HEAD^:have.txt,
415 # similar to the above.
416 printf "f.,..%s" $(intersperse "," <deltabase_have) >want &&
417 hex_unpack <thin.pack | intersperse "," >have &&
418 grep $(cat want) have &&
419
420 replace_packfile thin.pack &&
421
422 # Use protocol v2 because the sed command looks for the "packfile"
423 # section header.
424 test_config -C "$SERVER" protocol.version 2 &&
425
426 # Fetch the thin pack and ensure that index-pack is able to handle the
427 # REF_DELTA object with a missing promisor delta base.
428 GIT_TRACE_PACKET="$(pwd)/trace" git -C repo -c protocol.version=2 fetch &&
429
430 # Ensure that the missing delta base was directly fetched, but not the
431 # one that the client has.
432 grep "want $(cat deltabase_missing)" trace &&
433 ! grep "want $(cat deltabase_have)" trace &&
434
435 # Ensure that the one-time-sed script was used.
436 ! test -e "$HTTPD_ROOT_PATH/one-time-sed"
437'
438
439# DO NOT add non-httpd-specific tests here, because the last part of this
440# test script is only executed when httpd is available and enabled.
441
442test_done