8b4701ae4f
The commit-graph learned to use corrected commit dates instead of the generation number to help topological revision traversal. * ak/corrected-commit-date: doc: add corrected commit date info commit-reach: use corrected commit dates in paint_down_to_common() commit-graph: use generation v2 only if entire chain does commit-graph: implement generation data chunk commit-graph: implement corrected commit date commit-graph: return 64-bit generation number commit-graph: add a slab to store topological levels t6600-test-reach: generalize *_three_modes commit-graph: consolidate fill_commit_graph_info revision: parse parent in indegree_walk_step() commit-graph: fix regression when computing Bloom filters
409 lines
12 KiB
Bash
Executable File
409 lines
12 KiB
Bash
Executable File
#!/bin/sh
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test_description='git log for a path with Bloom filters'
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GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
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export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
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. ./test-lib.sh
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GIT_TEST_COMMIT_GRAPH=0
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GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS=0
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test_expect_success 'setup test - repo, commits, commit graph, log outputs' '
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git init &&
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mkdir A A/B A/B/C &&
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test_commit c1 A/file1 &&
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test_commit c2 A/B/file2 &&
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test_commit c3 A/B/C/file3 &&
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test_commit c4 A/file1 &&
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test_commit c5 A/B/file2 &&
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test_commit c6 A/B/C/file3 &&
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test_commit c7 A/file1 &&
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test_commit c8 A/B/file2 &&
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test_commit c9 A/B/C/file3 &&
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test_commit c10 file_to_be_deleted &&
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git checkout -b side HEAD~4 &&
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test_commit side-1 file4 &&
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git checkout main &&
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git merge side &&
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test_commit c11 file5 &&
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mv file5 file5_renamed &&
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git add file5_renamed &&
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git commit -m "rename" &&
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rm file_to_be_deleted &&
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git add . &&
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git commit -m "file removed" &&
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git commit --allow-empty -m "empty" &&
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git commit-graph write --reachable --changed-paths &&
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test_oid_cache <<-EOF
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oid_version sha1:1
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oid_version sha256:2
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EOF
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'
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graph_read_expect () {
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NUM_CHUNKS=6
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cat >expect <<- EOF
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header: 43475048 1 $(test_oid oid_version) $NUM_CHUNKS 0
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num_commits: $1
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chunks: oid_fanout oid_lookup commit_metadata generation_data bloom_indexes bloom_data
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EOF
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test-tool read-graph >actual &&
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test_cmp expect actual
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}
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test_expect_success 'commit-graph write wrote out the bloom chunks' '
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graph_read_expect 16
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'
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# Turn off any inherited trace2 settings for this test.
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sane_unset GIT_TRACE2 GIT_TRACE2_PERF GIT_TRACE2_EVENT
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sane_unset GIT_TRACE2_PERF_BRIEF
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sane_unset GIT_TRACE2_CONFIG_PARAMS
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setup () {
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rm -f "$TRASH_DIRECTORY/trace.perf" &&
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git -c core.commitGraph=false log --pretty="format:%s" $1 >log_wo_bloom &&
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GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.perf" git -c core.commitGraph=true log --pretty="format:%s" $1 >log_w_bloom
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}
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test_bloom_filters_used () {
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log_args=$1
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bloom_trace_prefix="statistics:{\"filter_not_present\":${2:-0},\"maybe\""
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setup "$log_args" &&
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grep -q "$bloom_trace_prefix" "$TRASH_DIRECTORY/trace.perf" &&
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test_cmp log_wo_bloom log_w_bloom &&
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test_path_is_file "$TRASH_DIRECTORY/trace.perf"
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}
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test_bloom_filters_not_used () {
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log_args=$1
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setup "$log_args" &&
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! grep -q "statistics:{\"filter_not_present\":" "$TRASH_DIRECTORY/trace.perf" &&
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test_cmp log_wo_bloom log_w_bloom
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}
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for path in A A/B A/B/C A/file1 A/B/file2 A/B/C/file3 file4 file5 file5_renamed file_to_be_deleted
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do
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for option in "" \
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"--all" \
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"--full-history" \
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"--full-history --simplify-merges" \
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"--simplify-merges" \
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"--simplify-by-decoration" \
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"--follow" \
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"--first-parent" \
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"--topo-order" \
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"--date-order" \
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"--author-date-order" \
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"--ancestry-path side..main"
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do
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test_expect_success "git log option: $option for path: $path" '
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test_bloom_filters_used "$option -- $path" &&
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test_config commitgraph.readChangedPaths false &&
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test_bloom_filters_not_used "$option -- $path"
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'
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done
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done
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test_expect_success 'git log -- folder works with and without the trailing slash' '
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test_bloom_filters_used "-- A" &&
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test_bloom_filters_used "-- A/"
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'
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test_expect_success 'git log for path that does not exist. ' '
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test_bloom_filters_used "-- path_does_not_exist"
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'
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test_expect_success 'git log with --walk-reflogs does not use Bloom filters' '
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test_bloom_filters_not_used "--walk-reflogs -- A"
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'
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test_expect_success 'git log -- multiple path specs does not use Bloom filters' '
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test_bloom_filters_not_used "-- file4 A/file1"
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'
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test_expect_success 'git log -- "." pathspec at root does not use Bloom filters' '
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test_bloom_filters_not_used "-- ."
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'
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test_expect_success 'git log with wildcard that resolves to a single path uses Bloom filters' '
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test_bloom_filters_used "-- *4" &&
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test_bloom_filters_used "-- *renamed"
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'
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test_expect_success 'git log with wildcard that resolves to a multiple paths does not uses Bloom filters' '
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test_bloom_filters_not_used "-- *" &&
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test_bloom_filters_not_used "-- file*"
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'
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test_expect_success 'setup - add commit-graph to the chain without Bloom filters' '
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test_commit c14 A/anotherFile2 &&
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test_commit c15 A/B/anotherFile2 &&
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test_commit c16 A/B/C/anotherFile2 &&
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git commit-graph write --reachable --split --no-changed-paths &&
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test_line_count = 2 .git/objects/info/commit-graphs/commit-graph-chain
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'
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test_expect_success 'use Bloom filters even if the latest graph does not have Bloom filters' '
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# Ensure that the number of empty filters is equal to the number of
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# filters in the latest graph layer to prove that they are loaded (and
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# ignored).
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test_bloom_filters_used "-- A/B" 3
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'
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test_expect_success 'setup - add commit-graph to the chain with Bloom filters' '
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test_commit c17 A/anotherFile3 &&
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git commit-graph write --reachable --changed-paths --split &&
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test_line_count = 3 .git/objects/info/commit-graphs/commit-graph-chain
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'
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test_bloom_filters_used_when_some_filters_are_missing () {
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log_args=$1
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bloom_trace_prefix="statistics:{\"filter_not_present\":3,\"maybe\":6,\"definitely_not\":9"
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setup "$log_args" &&
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grep -q "$bloom_trace_prefix" "$TRASH_DIRECTORY/trace.perf" &&
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test_cmp log_wo_bloom log_w_bloom
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}
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test_expect_success 'Use Bloom filters if they exist in the latest but not all commit graphs in the chain.' '
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test_bloom_filters_used_when_some_filters_are_missing "-- A/B"
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'
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test_expect_success 'persist filter settings' '
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test_when_finished rm -rf .git/objects/info/commit-graph* &&
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rm -rf .git/objects/info/commit-graph* &&
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GIT_TRACE2_EVENT="$(pwd)/trace2.txt" \
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GIT_TRACE2_EVENT_NESTING=5 \
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GIT_TEST_BLOOM_SETTINGS_NUM_HASHES=9 \
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GIT_TEST_BLOOM_SETTINGS_BITS_PER_ENTRY=15 \
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git commit-graph write --reachable --changed-paths &&
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grep "{\"hash_version\":1,\"num_hashes\":9,\"bits_per_entry\":15,\"max_changed_paths\":512" trace2.txt &&
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GIT_TRACE2_EVENT="$(pwd)/trace2-auto.txt" \
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GIT_TRACE2_EVENT_NESTING=5 \
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git commit-graph write --reachable --changed-paths &&
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grep "{\"hash_version\":1,\"num_hashes\":9,\"bits_per_entry\":15,\"max_changed_paths\":512" trace2-auto.txt
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'
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test_max_changed_paths () {
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grep "\"max_changed_paths\":$1" $2
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}
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test_filter_not_computed () {
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grep "\"key\":\"filter-not-computed\",\"value\":\"$1\"" $2
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}
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test_filter_computed () {
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grep "\"key\":\"filter-computed\",\"value\":\"$1\"" $2
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}
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test_filter_trunc_empty () {
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grep "\"key\":\"filter-trunc-empty\",\"value\":\"$1\"" $2
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}
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test_filter_trunc_large () {
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grep "\"key\":\"filter-trunc-large\",\"value\":\"$1\"" $2
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}
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test_expect_success 'correctly report changes over limit' '
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git init limits &&
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(
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cd limits &&
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mkdir d &&
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mkdir d/e &&
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for i in $(test_seq 1 2)
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do
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printf $i >d/file$i.txt &&
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printf $i >d/e/file$i.txt || return 1
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done &&
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mkdir mode &&
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printf bash >mode/script.sh &&
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mkdir foo &&
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touch foo/bar &&
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touch foo.txt &&
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git add d foo foo.txt mode &&
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git commit -m "files" &&
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# Commit has 7 file and 4 directory adds
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GIT_TEST_BLOOM_SETTINGS_MAX_CHANGED_PATHS=10 \
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GIT_TRACE2_EVENT="$(pwd)/trace" \
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git commit-graph write --reachable --changed-paths &&
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test_max_changed_paths 10 trace &&
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test_filter_computed 1 trace &&
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test_filter_trunc_large 1 trace &&
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for path in $(git ls-tree -r --name-only HEAD)
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do
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git -c commitGraph.readChangedPaths=false log \
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-- $path >expect &&
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git log -- $path >actual &&
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test_cmp expect actual || return 1
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done &&
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# Make a variety of path changes
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printf new1 >d/e/file1.txt &&
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printf new2 >d/file2.txt &&
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rm d/e/file2.txt &&
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rm -r foo &&
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printf text >foo &&
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mkdir f &&
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printf new1 >f/file1.txt &&
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# including a mode-only change (counts as modified)
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git update-index --chmod=+x mode/script.sh &&
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git add foo d f &&
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git commit -m "complicated" &&
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# start from scratch and rebuild
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rm -f .git/objects/info/commit-graph &&
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GIT_TEST_BLOOM_SETTINGS_MAX_CHANGED_PATHS=10 \
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GIT_TRACE2_EVENT="$(pwd)/trace-edit" \
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git commit-graph write --reachable --changed-paths &&
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test_max_changed_paths 10 trace-edit &&
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test_filter_computed 2 trace-edit &&
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test_filter_trunc_large 2 trace-edit &&
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for path in $(git ls-tree -r --name-only HEAD)
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do
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git -c commitGraph.readChangedPaths=false log \
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-- $path >expect &&
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git log -- $path >actual &&
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test_cmp expect actual || return 1
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done &&
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# start from scratch and rebuild
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rm -f .git/objects/info/commit-graph &&
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GIT_TEST_BLOOM_SETTINGS_MAX_CHANGED_PATHS=11 \
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GIT_TRACE2_EVENT="$(pwd)/trace-update" \
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git commit-graph write --reachable --changed-paths &&
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test_max_changed_paths 11 trace-update &&
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test_filter_computed 2 trace-update &&
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test_filter_trunc_large 0 trace-update &&
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for path in $(git ls-tree -r --name-only HEAD)
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do
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git -c commitGraph.readChangedPaths=false log \
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-- $path >expect &&
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git log -- $path >actual &&
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test_cmp expect actual || return 1
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done
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)
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'
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test_expect_success 'correctly report commits with no changed paths' '
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git init empty &&
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test_when_finished "rm -fr empty" &&
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(
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cd empty &&
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git commit --allow-empty -m "initial commit" &&
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GIT_TRACE2_EVENT="$(pwd)/trace.event" \
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git commit-graph write --reachable --changed-paths &&
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test_filter_computed 1 trace.event &&
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test_filter_not_computed 0 trace.event &&
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test_filter_trunc_empty 1 trace.event &&
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test_filter_trunc_large 0 trace.event
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)
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'
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test_expect_success 'Bloom generation is limited by --max-new-filters' '
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(
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cd limits &&
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test_commit c2 filter &&
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test_commit c3 filter &&
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test_commit c4 no-filter &&
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rm -f trace.event &&
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GIT_TRACE2_EVENT="$(pwd)/trace.event" \
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git commit-graph write --reachable --split=replace \
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--changed-paths --max-new-filters=2 &&
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test_filter_computed 2 trace.event &&
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test_filter_not_computed 3 trace.event &&
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test_filter_trunc_empty 0 trace.event &&
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test_filter_trunc_large 0 trace.event
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)
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'
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test_expect_success 'Bloom generation backfills previously-skipped filters' '
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# Check specifying commitGraph.maxNewFilters over "git config" works.
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test_config -C limits commitGraph.maxNewFilters 1 &&
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(
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cd limits &&
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rm -f trace.event &&
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GIT_TRACE2_EVENT="$(pwd)/trace.event" \
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git commit-graph write --reachable --changed-paths \
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--split=replace &&
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test_filter_computed 1 trace.event &&
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test_filter_not_computed 4 trace.event &&
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test_filter_trunc_empty 0 trace.event &&
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test_filter_trunc_large 0 trace.event
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)
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'
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test_expect_success '--max-new-filters overrides configuration' '
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git init override &&
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test_when_finished "rm -fr override" &&
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test_config -C override commitGraph.maxNewFilters 2 &&
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(
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cd override &&
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test_commit one &&
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test_commit two &&
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rm -f trace.event &&
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GIT_TRACE2_EVENT="$(pwd)/trace.event" \
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git commit-graph write --reachable --changed-paths \
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--max-new-filters=1 &&
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test_filter_computed 1 trace.event &&
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test_filter_not_computed 1 trace.event &&
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test_filter_trunc_empty 0 trace.event &&
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test_filter_trunc_large 0 trace.event
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)
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'
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test_expect_success 'Bloom generation backfills empty commits' '
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git init empty &&
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test_when_finished "rm -fr empty" &&
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(
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cd empty &&
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for i in $(test_seq 1 6)
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do
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git commit --allow-empty -m "$i"
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done &&
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# Generate Bloom filters for empty commits 1-6, two at a time.
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for i in $(test_seq 1 3)
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do
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rm -f trace.event &&
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GIT_TRACE2_EVENT="$(pwd)/trace.event" \
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git commit-graph write --reachable \
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--changed-paths --max-new-filters=2 &&
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test_filter_computed 2 trace.event &&
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test_filter_not_computed 4 trace.event &&
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test_filter_trunc_empty 2 trace.event &&
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test_filter_trunc_large 0 trace.event
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done &&
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# Finally, make sure that once all commits have filters, that
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# none are subsequently recomputed.
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rm -f trace.event &&
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GIT_TRACE2_EVENT="$(pwd)/trace.event" \
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git commit-graph write --reachable \
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--changed-paths --max-new-filters=2 &&
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test_filter_computed 0 trace.event &&
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test_filter_not_computed 6 trace.event &&
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test_filter_trunc_empty 0 trace.event &&
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test_filter_trunc_large 0 trace.event
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)
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'
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test_done
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