mirror of
https://github.com/git/git.git
synced 2024-05-25 03:06:10 +02:00
a29263cf5f
Currently, negotiation for V0/V1/V2 fetch have trace2 regions covering the entire negotiation process. However, we'd like additional data, such as timing for each round of negotiation or the number of "haves" in each round. Additionally, "independent negotiation" (AKA push negotiation) has no tracing at all. Having this data would allow us to compare the performance of the various negotation implementations, and to debug unexpectedly slow fetch & push sessions. Add per-round trace2 regions for all negotiation implementations (V0+V1, V2, and independent negotiation), as well as an overall region for independent negotiation. Add trace2 data logging for the number of haves and "in vain" objects for each round, and for the total number of rounds once negotiation completes. Finally, add a few checks into various tests to verify that the number of rounds is logged as expected. Signed-off-by: Josh Steadmon <steadmon@google.com> Acked-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
540 lines
14 KiB
Bash
Executable File
540 lines
14 KiB
Bash
Executable File
#!/bin/sh
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test_description='upload-pack ref-in-want'
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. ./test-lib.sh
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get_actual_refs () {
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sed -n -e '/wanted-refs/,/0001/{
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/wanted-refs/d
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/0001/d
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p
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}' <out | test-tool pkt-line unpack >actual_refs
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}
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get_actual_commits () {
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test-tool pkt-line unpack-sideband <out >o.pack &&
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git index-pack o.pack &&
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git verify-pack -v o.idx >objs &&
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sed -n -e 's/\([0-9a-f][0-9a-f]*\) commit .*/\1/p' objs >objs.sed &&
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sort >actual_commits <objs.sed
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}
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check_output () {
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get_actual_refs &&
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test_cmp expected_refs actual_refs &&
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get_actual_commits &&
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sort expected_commits >sorted_commits &&
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test_cmp sorted_commits actual_commits
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}
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write_command () {
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echo "command=$1"
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if test "$(test_oid algo)" != sha1
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then
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echo "object-format=$(test_oid algo)"
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fi
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}
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# Write a complete fetch command to stdout, suitable for use with `test-tool
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# pkt-line`. "want-ref", "want", and "have" lines are read from stdin.
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#
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# Examples:
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#
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# write_fetch_command <<-EOF
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# want-ref refs/heads/main
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# have $(git rev-parse a)
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# EOF
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#
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# write_fetch_command <<-EOF
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# want $(git rev-parse b)
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# have $(git rev-parse a)
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# EOF
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#
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write_fetch_command () {
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write_command fetch &&
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echo "0001" &&
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echo "no-progress" &&
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cat &&
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echo "done" &&
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echo "0000"
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}
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# c(o/foo) d(o/bar)
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# \ /
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# b e(baz) f(main)
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# \__ | __/
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# \ | /
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# a
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test_expect_success 'setup repository' '
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test_commit a &&
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git branch -M main &&
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git checkout -b o/foo &&
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test_commit b &&
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test_commit c &&
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git checkout -b o/bar b &&
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test_commit d &&
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git checkout -b baz a &&
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test_commit e &&
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git checkout main &&
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test_commit f
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'
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test_expect_success 'config controls ref-in-want advertisement' '
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test-tool serve-v2 --advertise-capabilities >out &&
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perl -ne "/ref-in-want/ and print" out >out.filter &&
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test_must_be_empty out.filter &&
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git config uploadpack.allowRefInWant false &&
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test-tool serve-v2 --advertise-capabilities >out &&
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perl -ne "/ref-in-want/ and print" out >out.filter &&
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test_must_be_empty out.filter &&
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git config uploadpack.allowRefInWant true &&
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test-tool serve-v2 --advertise-capabilities >out &&
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perl -ne "/ref-in-want/ and print" out >out.filter &&
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test_file_not_empty out.filter
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'
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test_expect_success 'invalid want-ref line' '
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write_fetch_command >pkt <<-EOF &&
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want-ref refs/heads/non-existent
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EOF
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test-tool pkt-line pack <pkt >in &&
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test_must_fail test-tool serve-v2 --stateless-rpc 2>out <in &&
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grep "unknown ref" out
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'
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test_expect_success 'basic want-ref' '
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oid=$(git rev-parse f) &&
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cat >expected_refs <<-EOF &&
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$oid refs/heads/main
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EOF
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git rev-parse f >expected_commits &&
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write_fetch_command >pkt <<-EOF &&
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want-ref refs/heads/main
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have $(git rev-parse a)
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EOF
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test-tool pkt-line pack <pkt >in &&
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test-tool serve-v2 --stateless-rpc >out <in &&
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check_output
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'
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test_expect_success 'multiple want-ref lines' '
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oid_c=$(git rev-parse c) &&
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oid_d=$(git rev-parse d) &&
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cat >expected_refs <<-EOF &&
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$oid_c refs/heads/o/foo
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$oid_d refs/heads/o/bar
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EOF
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git rev-parse c d >expected_commits &&
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write_fetch_command >pkt <<-EOF &&
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want-ref refs/heads/o/foo
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want-ref refs/heads/o/bar
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have $(git rev-parse b)
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EOF
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test-tool pkt-line pack <pkt >in &&
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test-tool serve-v2 --stateless-rpc >out <in &&
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check_output
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'
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test_expect_success 'mix want and want-ref' '
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oid=$(git rev-parse f) &&
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cat >expected_refs <<-EOF &&
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$oid refs/heads/main
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EOF
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git rev-parse e f >expected_commits &&
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write_fetch_command >pkt <<-EOF &&
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want-ref refs/heads/main
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want $(git rev-parse e)
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have $(git rev-parse a)
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EOF
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test-tool pkt-line pack <pkt >in &&
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test-tool serve-v2 --stateless-rpc >out <in &&
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check_output
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'
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test_expect_success 'want-ref with ref we already have commit for' '
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oid=$(git rev-parse c) &&
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cat >expected_refs <<-EOF &&
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$oid refs/heads/o/foo
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EOF
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>expected_commits &&
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write_fetch_command >pkt <<-EOF &&
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want-ref refs/heads/o/foo
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have $(git rev-parse c)
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EOF
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test-tool pkt-line pack <pkt >in &&
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test-tool serve-v2 --stateless-rpc >out <in &&
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check_output
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'
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REPO="$(pwd)/repo"
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LOCAL_PRISTINE="$(pwd)/local_pristine"
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# $REPO
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# c(o/foo) d(o/bar)
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# \ /
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# b e(baz) f(main)
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# \__ | __/
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# \ | /
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# a
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#
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# $LOCAL_PRISTINE
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# s32(side)
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# |
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# .
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# .
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# |
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# a(main)
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test_expect_success 'setup repos for fetching with ref-in-want tests' '
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(
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git init -b main "$REPO" &&
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cd "$REPO" &&
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test_commit a &&
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# Local repo with many commits (so that negotiation will take
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# more than 1 request/response pair)
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rm -rf "$LOCAL_PRISTINE" &&
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git clone "file://$REPO" "$LOCAL_PRISTINE" &&
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cd "$LOCAL_PRISTINE" &&
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git checkout -b side &&
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test_commit_bulk --id=s 33 &&
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# Add novel commits to upstream
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git checkout main &&
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cd "$REPO" &&
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git checkout -b o/foo &&
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test_commit b &&
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test_commit c &&
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git checkout -b o/bar b &&
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test_commit d &&
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git checkout -b baz a &&
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test_commit e &&
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git checkout main &&
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test_commit f
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) &&
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git -C "$REPO" config uploadpack.allowRefInWant true &&
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git -C "$LOCAL_PRISTINE" config protocol.version 2
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'
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test_expect_success 'fetching with exact OID' '
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test_when_finished "rm -f log trace2" &&
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rm -rf local &&
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cp -r "$LOCAL_PRISTINE" local &&
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oid=$(git -C "$REPO" rev-parse d) &&
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GIT_TRACE_PACKET="$(pwd)/log" GIT_TRACE2_EVENT="$(pwd)/trace2" \
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git -C local fetch origin \
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"$oid":refs/heads/actual &&
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grep \"key\":\"total_rounds\",\"value\":\"2\" trace2 &&
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git -C "$REPO" rev-parse "d" >expected &&
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git -C local rev-parse refs/heads/actual >actual &&
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test_cmp expected actual &&
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grep "want $oid" log
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'
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test_expect_success 'fetching multiple refs' '
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test_when_finished "rm -f log" &&
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rm -rf local &&
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cp -r "$LOCAL_PRISTINE" local &&
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GIT_TRACE_PACKET="$(pwd)/log" git -C local fetch origin main baz &&
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git -C "$REPO" rev-parse "main" "baz" >expected &&
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git -C local rev-parse refs/remotes/origin/main refs/remotes/origin/baz >actual &&
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test_cmp expected actual &&
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grep "want-ref refs/heads/main" log &&
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grep "want-ref refs/heads/baz" log
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'
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test_expect_success 'fetching ref and exact OID' '
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test_when_finished "rm -f log" &&
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rm -rf local &&
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cp -r "$LOCAL_PRISTINE" local &&
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oid=$(git -C "$REPO" rev-parse b) &&
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GIT_TRACE_PACKET="$(pwd)/log" git -C local fetch origin \
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main "$oid":refs/heads/actual &&
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git -C "$REPO" rev-parse "main" "b" >expected &&
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git -C local rev-parse refs/remotes/origin/main refs/heads/actual >actual &&
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test_cmp expected actual &&
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grep "want $oid" log &&
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grep "want-ref refs/heads/main" log
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'
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test_expect_success 'fetching with wildcard that does not match any refs' '
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test_when_finished "rm -f log" &&
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rm -rf local &&
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cp -r "$LOCAL_PRISTINE" local &&
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git -C local fetch origin refs/heads/none*:refs/heads/* >out &&
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test_must_be_empty out
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'
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test_expect_success 'fetching with wildcard that matches multiple refs' '
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test_when_finished "rm -f log" &&
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rm -rf local &&
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cp -r "$LOCAL_PRISTINE" local &&
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GIT_TRACE_PACKET="$(pwd)/log" git -C local fetch origin refs/heads/o*:refs/heads/o* &&
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git -C "$REPO" rev-parse "o/foo" "o/bar" >expected &&
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git -C local rev-parse "o/foo" "o/bar" >actual &&
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test_cmp expected actual &&
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grep "want-ref refs/heads/o/foo" log &&
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grep "want-ref refs/heads/o/bar" log
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'
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REPO="$(pwd)/repo-ns"
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test_expect_success 'setup namespaced repo' '
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(
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git init -b main "$REPO" &&
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cd "$REPO" &&
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test_commit a &&
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test_commit b &&
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git checkout a &&
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test_commit c &&
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git checkout a &&
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test_commit d &&
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git update-ref refs/heads/ns-no b &&
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git update-ref refs/namespaces/ns/refs/heads/ns-yes c &&
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git update-ref refs/namespaces/ns/refs/heads/hidden d
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) &&
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git -C "$REPO" config uploadpack.allowRefInWant true
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'
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test_expect_success 'with namespace: want-ref is considered relative to namespace' '
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wanted_ref=refs/heads/ns-yes &&
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oid=$(git -C "$REPO" rev-parse "refs/namespaces/ns/$wanted_ref") &&
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cat >expected_refs <<-EOF &&
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$oid $wanted_ref
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EOF
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cat >expected_commits <<-EOF &&
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$oid
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$(git -C "$REPO" rev-parse a)
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EOF
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write_fetch_command >pkt <<-EOF &&
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want-ref $wanted_ref
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EOF
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test-tool pkt-line pack <pkt >in &&
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GIT_NAMESPACE=ns test-tool -C "$REPO" serve-v2 --stateless-rpc >out <in &&
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check_output
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'
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test_expect_success 'with namespace: want-ref outside namespace is unknown' '
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wanted_ref=refs/heads/ns-no &&
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write_fetch_command >pkt <<-EOF &&
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want-ref $wanted_ref
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EOF
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test-tool pkt-line pack <pkt >in &&
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test_must_fail env GIT_NAMESPACE=ns \
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test-tool -C "$REPO" serve-v2 --stateless-rpc >out <in &&
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grep "unknown ref" out
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'
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# Cross-check refs/heads/ns-no indeed exists
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test_expect_success 'without namespace: want-ref outside namespace succeeds' '
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wanted_ref=refs/heads/ns-no &&
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oid=$(git -C "$REPO" rev-parse $wanted_ref) &&
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cat >expected_refs <<-EOF &&
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$oid $wanted_ref
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EOF
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cat >expected_commits <<-EOF &&
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$oid
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$(git -C "$REPO" rev-parse a)
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EOF
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write_fetch_command >pkt <<-EOF &&
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want-ref $wanted_ref
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EOF
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test-tool pkt-line pack <pkt >in &&
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test-tool -C "$REPO" serve-v2 --stateless-rpc >out <in &&
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check_output
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'
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test_expect_success 'with namespace: hideRefs is matched, relative to namespace' '
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wanted_ref=refs/heads/hidden &&
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git -C "$REPO" config transfer.hideRefs $wanted_ref &&
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write_fetch_command >pkt <<-EOF &&
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want-ref $wanted_ref
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EOF
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test-tool pkt-line pack <pkt >in &&
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test_must_fail env GIT_NAMESPACE=ns \
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test-tool -C "$REPO" serve-v2 --stateless-rpc >out <in &&
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grep "unknown ref" out
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'
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# Cross-check refs/heads/hidden indeed exists
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test_expect_success 'with namespace: want-ref succeeds if hideRefs is removed' '
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wanted_ref=refs/heads/hidden &&
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git -C "$REPO" config --unset transfer.hideRefs $wanted_ref &&
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oid=$(git -C "$REPO" rev-parse "refs/namespaces/ns/$wanted_ref") &&
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cat >expected_refs <<-EOF &&
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$oid $wanted_ref
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EOF
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cat >expected_commits <<-EOF &&
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$oid
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$(git -C "$REPO" rev-parse a)
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EOF
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write_fetch_command >pkt <<-EOF &&
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want-ref $wanted_ref
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EOF
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test-tool pkt-line pack <pkt >in &&
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GIT_NAMESPACE=ns test-tool -C "$REPO" serve-v2 --stateless-rpc >out <in &&
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check_output
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'
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test_expect_success 'without namespace: relative hideRefs does not match' '
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wanted_ref=refs/namespaces/ns/refs/heads/hidden &&
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git -C "$REPO" config transfer.hideRefs refs/heads/hidden &&
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oid=$(git -C "$REPO" rev-parse $wanted_ref) &&
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cat >expected_refs <<-EOF &&
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$oid $wanted_ref
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EOF
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cat >expected_commits <<-EOF &&
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$oid
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$(git -C "$REPO" rev-parse a)
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EOF
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write_fetch_command >pkt <<-EOF &&
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want-ref $wanted_ref
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EOF
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test-tool pkt-line pack <pkt >in &&
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test-tool -C "$REPO" serve-v2 --stateless-rpc >out <in &&
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check_output
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'
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. "$TEST_DIRECTORY"/lib-httpd.sh
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start_httpd
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REPO="$HTTPD_DOCUMENT_ROOT_PATH/repo"
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LOCAL_PRISTINE="$(pwd)/local_pristine"
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test_expect_success 'setup repos for change-while-negotiating test' '
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(
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git init -b main "$REPO" &&
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cd "$REPO" &&
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>.git/git-daemon-export-ok &&
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test_commit m1 &&
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git tag -d m1 &&
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# Local repo with many commits (so that negotiation will take
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# more than 1 request/response pair)
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rm -rf "$LOCAL_PRISTINE" &&
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git clone "http://127.0.0.1:$LIB_HTTPD_PORT/smart/repo" "$LOCAL_PRISTINE" &&
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cd "$LOCAL_PRISTINE" &&
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git checkout -b side &&
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test_commit_bulk --id=s 33 &&
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# Add novel commits to upstream
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git checkout main &&
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cd "$REPO" &&
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test_commit m2 &&
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test_commit m3 &&
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git tag -d m2 m3
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) &&
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git -C "$LOCAL_PRISTINE" remote set-url origin "http://127.0.0.1:$LIB_HTTPD_PORT/one_time_perl/repo" &&
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git -C "$LOCAL_PRISTINE" config protocol.version 2
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'
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inconsistency () {
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# Simulate that the server initially reports $2 as the ref
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# corresponding to $1, and after that, $1 as the ref corresponding to
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# $1. This corresponds to the real-life situation where the server's
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# repository appears to change during negotiation, for example, when
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# different servers in a load-balancing arrangement serve (stateless)
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# RPCs during a single negotiation.
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oid1=$(git -C "$REPO" rev-parse $1) &&
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oid2=$(git -C "$REPO" rev-parse $2) &&
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echo "s/$oid1/$oid2/" >"$HTTPD_ROOT_PATH/one-time-perl"
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}
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test_expect_success 'server is initially ahead - no ref in want' '
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git -C "$REPO" config uploadpack.allowRefInWant false &&
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rm -rf local &&
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cp -r "$LOCAL_PRISTINE" local &&
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inconsistency main $(test_oid numeric) &&
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test_must_fail git -C local fetch 2>err &&
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test_i18ngrep "fatal: remote error: upload-pack: not our ref" err
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'
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test_expect_success 'server is initially ahead - ref in want' '
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git -C "$REPO" config uploadpack.allowRefInWant true &&
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rm -rf local &&
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cp -r "$LOCAL_PRISTINE" local &&
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inconsistency main $(test_oid numeric) &&
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git -C local fetch &&
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git -C "$REPO" rev-parse --verify main >expected &&
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|
git -C local rev-parse --verify refs/remotes/origin/main >actual &&
|
|
test_cmp expected actual
|
|
'
|
|
|
|
test_expect_success 'server is initially behind - no ref in want' '
|
|
git -C "$REPO" config uploadpack.allowRefInWant false &&
|
|
rm -rf local &&
|
|
cp -r "$LOCAL_PRISTINE" local &&
|
|
inconsistency main "main^" &&
|
|
git -C local fetch &&
|
|
|
|
git -C "$REPO" rev-parse --verify "main^" >expected &&
|
|
git -C local rev-parse --verify refs/remotes/origin/main >actual &&
|
|
test_cmp expected actual
|
|
'
|
|
|
|
test_expect_success 'server is initially behind - ref in want' '
|
|
git -C "$REPO" config uploadpack.allowRefInWant true &&
|
|
rm -rf local &&
|
|
cp -r "$LOCAL_PRISTINE" local &&
|
|
inconsistency main "main^" &&
|
|
git -C local fetch &&
|
|
|
|
git -C "$REPO" rev-parse --verify "main" >expected &&
|
|
git -C local rev-parse --verify refs/remotes/origin/main >actual &&
|
|
test_cmp expected actual
|
|
'
|
|
|
|
test_expect_success 'server loses a ref - ref in want' '
|
|
git -C "$REPO" config uploadpack.allowRefInWant true &&
|
|
rm -rf local &&
|
|
cp -r "$LOCAL_PRISTINE" local &&
|
|
echo "s/main/rain/" >"$HTTPD_ROOT_PATH/one-time-perl" &&
|
|
test_must_fail git -C local fetch 2>err &&
|
|
|
|
test_i18ngrep "fatal: remote error: unknown ref refs/heads/rain" err
|
|
'
|
|
|
|
# DO NOT add non-httpd-specific tests here, because the last part of this
|
|
# test script is only executed when httpd is available and enabled.
|
|
|
|
test_done
|