| #!/bin/sh |
| |
| test_description='exercise basic bitmap functionality' |
| |
| . ./test-lib.sh |
| . "$TEST_DIRECTORY"/lib-bitmap.sh |
| |
| # t5310 deals only with single-pack bitmaps, so don't write MIDX bitmaps in |
| # their place. |
| GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP=0 |
| |
| objpath () { |
| echo ".git/objects/$(echo "$1" | sed -e 's|\(..\)|\1/|')" |
| } |
| |
| # show objects present in pack ($1 should be associated *.idx) |
| list_packed_objects () { |
| git show-index <"$1" >object-list && |
| cut -d' ' -f2 object-list |
| } |
| |
| # has_any pattern-file content-file |
| # tests whether content-file has any entry from pattern-file with entries being |
| # whole lines. |
| has_any () { |
| grep -Ff "$1" "$2" |
| } |
| |
| test_bitmap_cases () { |
| writeLookupTable=false |
| for i in "$@" |
| do |
| case "$i" in |
| "pack.writeBitmapLookupTable") writeLookupTable=true;; |
| esac |
| done |
| |
| test_expect_success 'setup test repository' ' |
| rm -fr * .git && |
| git init && |
| git config pack.writeBitmapLookupTable '"$writeLookupTable"' |
| ' |
| setup_bitmap_history |
| |
| test_expect_success 'setup writing bitmaps during repack' ' |
| git config repack.writeBitmaps true |
| ' |
| |
| test_expect_success 'full repack creates bitmaps' ' |
| GIT_TRACE2_EVENT="$(pwd)/trace" \ |
| git repack -ad && |
| ls .git/objects/pack/ | grep bitmap >output && |
| test_line_count = 1 output && |
| grep "\"key\":\"num_selected_commits\",\"value\":\"106\"" trace && |
| grep "\"key\":\"num_maximal_commits\",\"value\":\"107\"" trace |
| ' |
| |
| basic_bitmap_tests |
| |
| test_expect_success 'pack-objects respects --local (non-local loose)' ' |
| git init --bare alt.git && |
| echo $(pwd)/alt.git/objects >.git/objects/info/alternates && |
| echo content1 >file1 && |
| # non-local loose object which is not present in bitmapped pack |
| altblob=$(GIT_DIR=alt.git git hash-object -w file1) && |
| # non-local loose object which is also present in bitmapped pack |
| git cat-file blob $blob | GIT_DIR=alt.git git hash-object -w --stdin && |
| git add file1 && |
| test_tick && |
| git commit -m commit_file1 && |
| echo HEAD | git pack-objects --local --stdout --revs >1.pack && |
| git index-pack 1.pack && |
| list_packed_objects 1.idx >1.objects && |
| printf "%s\n" "$altblob" "$blob" >nonlocal-loose && |
| ! has_any nonlocal-loose 1.objects |
| ' |
| |
| test_expect_success 'pack-objects respects --honor-pack-keep (local non-bitmapped pack)' ' |
| echo content2 >file2 && |
| blob2=$(git hash-object -w file2) && |
| git add file2 && |
| test_tick && |
| git commit -m commit_file2 && |
| printf "%s\n" "$blob2" "$bitmaptip" >keepobjects && |
| pack2=$(git pack-objects pack2 <keepobjects) && |
| mv pack2-$pack2.* .git/objects/pack/ && |
| >.git/objects/pack/pack2-$pack2.keep && |
| rm $(objpath $blob2) && |
| echo HEAD | git pack-objects --honor-pack-keep --stdout --revs >2a.pack && |
| git index-pack 2a.pack && |
| list_packed_objects 2a.idx >2a.objects && |
| ! has_any keepobjects 2a.objects |
| ' |
| |
| test_expect_success 'pack-objects respects --local (non-local pack)' ' |
| mv .git/objects/pack/pack2-$pack2.* alt.git/objects/pack/ && |
| echo HEAD | git pack-objects --local --stdout --revs >2b.pack && |
| git index-pack 2b.pack && |
| list_packed_objects 2b.idx >2b.objects && |
| ! has_any keepobjects 2b.objects |
| ' |
| |
| test_expect_success 'pack-objects respects --honor-pack-keep (local bitmapped pack)' ' |
| ls .git/objects/pack/ | grep bitmap >output && |
| test_line_count = 1 output && |
| packbitmap=$(basename $(cat output) .bitmap) && |
| list_packed_objects .git/objects/pack/$packbitmap.idx >packbitmap.objects && |
| test_when_finished "rm -f .git/objects/pack/$packbitmap.keep" && |
| >.git/objects/pack/$packbitmap.keep && |
| echo HEAD | git pack-objects --honor-pack-keep --stdout --revs >3a.pack && |
| git index-pack 3a.pack && |
| list_packed_objects 3a.idx >3a.objects && |
| ! has_any packbitmap.objects 3a.objects |
| ' |
| |
| test_expect_success 'pack-objects respects --local (non-local bitmapped pack)' ' |
| mv .git/objects/pack/$packbitmap.* alt.git/objects/pack/ && |
| rm -f .git/objects/pack/multi-pack-index && |
| test_when_finished "mv alt.git/objects/pack/$packbitmap.* .git/objects/pack/" && |
| echo HEAD | git pack-objects --local --stdout --revs >3b.pack && |
| git index-pack 3b.pack && |
| list_packed_objects 3b.idx >3b.objects && |
| ! has_any packbitmap.objects 3b.objects |
| ' |
| |
| test_expect_success 'pack-objects to file can use bitmap' ' |
| # make sure we still have 1 bitmap index from previous tests |
| ls .git/objects/pack/ | grep bitmap >output && |
| test_line_count = 1 output && |
| # verify equivalent packs are generated with/without using bitmap index |
| packasha1=$(git pack-objects --no-use-bitmap-index --all packa </dev/null) && |
| packbsha1=$(git pack-objects --use-bitmap-index --all packb </dev/null) && |
| list_packed_objects packa-$packasha1.idx >packa.objects && |
| list_packed_objects packb-$packbsha1.idx >packb.objects && |
| test_cmp packa.objects packb.objects |
| ' |
| |
| test_expect_success 'full repack, reusing previous bitmaps' ' |
| git repack -ad && |
| ls .git/objects/pack/ | grep bitmap >output && |
| test_line_count = 1 output |
| ' |
| |
| test_expect_success 'fetch (full bitmap)' ' |
| git --git-dir=clone.git fetch origin second:second && |
| git rev-parse HEAD >expect && |
| git --git-dir=clone.git rev-parse HEAD >actual && |
| test_cmp expect actual |
| ' |
| |
| test_expect_success 'create objects for missing-HAVE tests' ' |
| blob=$(echo "missing have" | git hash-object -w --stdin) && |
| tree=$(printf "100644 blob $blob\tfile\n" | git mktree) && |
| parent=$(echo parent | git commit-tree $tree) && |
| commit=$(echo commit | git commit-tree $tree -p $parent) && |
| cat >revs <<-EOF |
| HEAD |
| ^HEAD^ |
| ^$commit |
| EOF |
| ' |
| |
| test_expect_success 'pack-objects respects --incremental' ' |
| cat >revs2 <<-EOF && |
| HEAD |
| $commit |
| EOF |
| git pack-objects --incremental --stdout --revs <revs2 >4.pack && |
| git index-pack 4.pack && |
| list_packed_objects 4.idx >4.objects && |
| test_line_count = 4 4.objects && |
| git rev-list --objects $commit >revlist && |
| cut -d" " -f1 revlist |sort >objects && |
| test_cmp 4.objects objects |
| ' |
| |
| test_expect_success 'pack with missing blob' ' |
| rm $(objpath $blob) && |
| git pack-objects --stdout --revs <revs >/dev/null |
| ' |
| |
| test_expect_success 'pack with missing tree' ' |
| rm $(objpath $tree) && |
| git pack-objects --stdout --revs <revs >/dev/null |
| ' |
| |
| test_expect_success 'pack with missing parent' ' |
| rm $(objpath $parent) && |
| git pack-objects --stdout --revs <revs >/dev/null |
| ' |
| |
| test_expect_success JGIT,SHA1 'we can read jgit bitmaps' ' |
| git clone --bare . compat-jgit.git && |
| ( |
| cd compat-jgit.git && |
| rm -f objects/pack/*.bitmap && |
| jgit gc && |
| git rev-list --test-bitmap HEAD |
| ) |
| ' |
| |
| test_expect_success JGIT,SHA1 'jgit can read our bitmaps' ' |
| git clone --bare . compat-us.git && |
| ( |
| cd compat-us.git && |
| git config pack.writeBitmapLookupTable '"$writeLookupTable"' && |
| git repack -adb && |
| # jgit gc will barf if it does not like our bitmaps |
| jgit gc |
| ) |
| ' |
| |
| test_expect_success 'splitting packs does not generate bogus bitmaps' ' |
| test-tool genrandom foo $((1024 * 1024)) >rand && |
| git add rand && |
| git commit -m "commit with big file" && |
| git -c pack.packSizeLimit=500k repack -adb && |
| git init --bare no-bitmaps.git && |
| git -C no-bitmaps.git fetch .. HEAD |
| ' |
| |
| test_expect_success 'set up reusable pack' ' |
| rm -f .git/objects/pack/*.keep && |
| git repack -adb && |
| reusable_pack () { |
| git for-each-ref --format="%(objectname)" | |
| git pack-objects --delta-base-offset --revs --stdout "$@" |
| } |
| ' |
| |
| test_expect_success 'pack reuse respects --honor-pack-keep' ' |
| test_when_finished "rm -f .git/objects/pack/*.keep" && |
| for i in .git/objects/pack/*.pack |
| do |
| >${i%.pack}.keep || return 1 |
| done && |
| reusable_pack --honor-pack-keep >empty.pack && |
| git index-pack empty.pack && |
| git show-index <empty.idx >actual && |
| test_must_be_empty actual |
| ' |
| |
| test_expect_success 'pack reuse respects --local' ' |
| mv .git/objects/pack/* alt.git/objects/pack/ && |
| test_when_finished "mv alt.git/objects/pack/* .git/objects/pack/" && |
| reusable_pack --local >empty.pack && |
| git index-pack empty.pack && |
| git show-index <empty.idx >actual && |
| test_must_be_empty actual |
| ' |
| |
| test_expect_success 'pack reuse respects --incremental' ' |
| reusable_pack --incremental >empty.pack && |
| git index-pack empty.pack && |
| git show-index <empty.idx >actual && |
| test_must_be_empty actual |
| ' |
| |
| test_expect_success 'truncated bitmap fails gracefully (ewah)' ' |
| test_config pack.writebitmaphashcache false && |
| test_config pack.writebitmaplookuptable false && |
| git repack -ad && |
| git rev-list --use-bitmap-index --count --all >expect && |
| bitmap=$(ls .git/objects/pack/*.bitmap) && |
| test_when_finished "rm -f $bitmap" && |
| test_copy_bytes 256 <$bitmap >$bitmap.tmp && |
| mv -f $bitmap.tmp $bitmap && |
| git rev-list --use-bitmap-index --count --all >actual 2>stderr && |
| test_cmp expect actual && |
| test_i18ngrep corrupt.ewah.bitmap stderr |
| ' |
| |
| test_expect_success 'truncated bitmap fails gracefully (cache)' ' |
| git config pack.writeBitmapLookupTable '"$writeLookupTable"' && |
| git repack -ad && |
| git rev-list --use-bitmap-index --count --all >expect && |
| bitmap=$(ls .git/objects/pack/*.bitmap) && |
| test_when_finished "rm -f $bitmap" && |
| test_copy_bytes 512 <$bitmap >$bitmap.tmp && |
| mv -f $bitmap.tmp $bitmap && |
| git rev-list --use-bitmap-index --count --all >actual 2>stderr && |
| test_cmp expect actual && |
| test_i18ngrep corrupted.bitmap.index stderr |
| ' |
| |
| # Create a state of history with these properties: |
| # |
| # - refs that allow a client to fetch some new history, while sharing some old |
| # history with the server; we use branches delta-reuse-old and |
| # delta-reuse-new here |
| # |
| # - the new history contains an object that is stored on the server as a delta |
| # against a base that is in the old history |
| # |
| # - the base object is not immediately reachable from the tip of the old |
| # history; finding it would involve digging down through history we know the |
| # other side has |
| # |
| # This should result in a state where fetching from old->new would not |
| # traditionally reuse the on-disk delta (because we'd have to dig to realize |
| # that the client has it), but we will do so if bitmaps can tell us cheaply |
| # that the other side has it. |
| test_expect_success 'set up thin delta-reuse parent' ' |
| # This first commit contains the buried base object. |
| test-tool genrandom delta 16384 >file && |
| git add file && |
| git commit -m "delta base" && |
| base=$(git rev-parse --verify HEAD:file) && |
| |
| # These intermediate commits bury the base back in history. |
| # This becomes the "old" state. |
| for i in 1 2 3 4 5 |
| do |
| echo $i >file && |
| git commit -am "intermediate $i" || return 1 |
| done && |
| git branch delta-reuse-old && |
| |
| # And now our new history has a delta against the buried base. Note |
| # that this must be smaller than the original file, since pack-objects |
| # prefers to create deltas from smaller objects to larger. |
| test-tool genrandom delta 16300 >file && |
| git commit -am "delta result" && |
| delta=$(git rev-parse --verify HEAD:file) && |
| git branch delta-reuse-new && |
| |
| # Repack with bitmaps and double check that we have the expected delta |
| # relationship. |
| git repack -adb && |
| have_delta $delta $base |
| ' |
| |
| # Now we can sanity-check the non-bitmap behavior (that the server is not able |
| # to reuse the delta). This isn't strictly something we care about, so this |
| # test could be scrapped in the future. But it makes sure that the next test is |
| # actually triggering the feature we want. |
| # |
| # Note that our tools for working with on-the-wire "thin" packs are limited. So |
| # we actually perform the fetch, retain the resulting pack, and inspect the |
| # result. |
| test_expect_success 'fetch without bitmaps ignores delta against old base' ' |
| test_config pack.usebitmaps false && |
| test_when_finished "rm -rf client.git" && |
| git init --bare client.git && |
| ( |
| cd client.git && |
| git config transfer.unpackLimit 1 && |
| git fetch .. delta-reuse-old:delta-reuse-old && |
| git fetch .. delta-reuse-new:delta-reuse-new && |
| have_delta $delta $ZERO_OID |
| ) |
| ' |
| |
| # And do the same for the bitmap case, where we do expect to find the delta. |
| test_expect_success 'fetch with bitmaps can reuse old base' ' |
| test_config pack.usebitmaps true && |
| test_when_finished "rm -rf client.git" && |
| git init --bare client.git && |
| ( |
| cd client.git && |
| git config transfer.unpackLimit 1 && |
| git fetch .. delta-reuse-old:delta-reuse-old && |
| git fetch .. delta-reuse-new:delta-reuse-new && |
| have_delta $delta $base |
| ) |
| ' |
| |
| test_expect_success 'pack.preferBitmapTips' ' |
| git init repo && |
| test_when_finished "rm -fr repo" && |
| ( |
| cd repo && |
| git config pack.writeBitmapLookupTable '"$writeLookupTable"' && |
| |
| # create enough commits that not all are receive bitmap |
| # coverage even if they are all at the tip of some reference. |
| test_commit_bulk --message="%s" 103 && |
| |
| git rev-list HEAD >commits.raw && |
| sort <commits.raw >commits && |
| |
| git log --format="create refs/tags/%s %H" HEAD >refs && |
| git update-ref --stdin <refs && |
| |
| git repack -adb && |
| test-tool bitmap list-commits | sort >bitmaps && |
| |
| # remember which commits did not receive bitmaps |
| comm -13 bitmaps commits >before && |
| test_file_not_empty before && |
| |
| # mark the commits which did not receive bitmaps as preferred, |
| # and generate the bitmap again |
| perl -pe "s{^}{create refs/tags/include/$. }" <before | |
| git update-ref --stdin && |
| git -c pack.preferBitmapTips=refs/tags/include repack -adb && |
| |
| # finally, check that the commit(s) without bitmap coverage |
| # are not the same ones as before |
| test-tool bitmap list-commits | sort >bitmaps && |
| comm -13 bitmaps commits >after && |
| |
| ! test_cmp before after |
| ) |
| ' |
| |
| test_expect_success 'complains about multiple pack bitmaps' ' |
| rm -fr repo && |
| git init repo && |
| test_when_finished "rm -fr repo" && |
| ( |
| cd repo && |
| git config pack.writeBitmapLookupTable '"$writeLookupTable"' && |
| |
| test_commit base && |
| |
| git repack -adb && |
| bitmap="$(ls .git/objects/pack/pack-*.bitmap)" && |
| mv "$bitmap" "$bitmap.bak" && |
| |
| test_commit other && |
| git repack -ab && |
| |
| mv "$bitmap.bak" "$bitmap" && |
| |
| find .git/objects/pack -type f -name "*.pack" >packs && |
| find .git/objects/pack -type f -name "*.bitmap" >bitmaps && |
| test_line_count = 2 packs && |
| test_line_count = 2 bitmaps && |
| |
| git rev-list --use-bitmap-index HEAD 2>err && |
| grep "ignoring extra bitmap file" err |
| ) |
| ' |
| } |
| |
| test_bitmap_cases |
| |
| test_expect_success 'incremental repack fails when bitmaps are requested' ' |
| test_commit more-1 && |
| test_must_fail git repack -d 2>err && |
| test_i18ngrep "Incremental repacks are incompatible with bitmap" err |
| ' |
| |
| test_expect_success 'incremental repack can disable bitmaps' ' |
| test_commit more-2 && |
| git repack -d --no-write-bitmap-index |
| ' |
| |
| test_bitmap_cases "pack.writeBitmapLookupTable" |
| |
| test_expect_success 'verify writing bitmap lookup table when enabled' ' |
| GIT_TRACE2_EVENT="$(pwd)/trace2" \ |
| git repack -ad && |
| grep "\"label\":\"writing_lookup_table\"" trace2 |
| ' |
| |
| test_expect_success 'truncated bitmap fails gracefully (lookup table)' ' |
| test_config pack.writebitmaphashcache false && |
| git repack -adb && |
| git rev-list --use-bitmap-index --count --all >expect && |
| bitmap=$(ls .git/objects/pack/*.bitmap) && |
| test_when_finished "rm -f $bitmap" && |
| test_copy_bytes 512 <$bitmap >$bitmap.tmp && |
| mv -f $bitmap.tmp $bitmap && |
| git rev-list --use-bitmap-index --count --all >actual 2>stderr && |
| test_cmp expect actual && |
| test_i18ngrep corrupted.bitmap.index stderr |
| ' |
| |
| test_done |