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https://github.com/git/git.git
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cccf74e2da
In git-fetch, --depth argument is always relative with the latest remote refs. This makes it a bit difficult to cover this use case, where the user wants to make the shallow history, say 3 levels deeper. It would work if remote refs have not moved yet, but nobody can guarantee that, especially when that use case is performed a couple months after the last clone or "git fetch --depth". Also, modifying shallow boundary using --depth does not work well with clones created by --since or --not. This patch fixes that. A new argument --deepen=<N> will add <N> more (*) parent commits to the current history regardless of where remote refs are. Have/Want negotiation is still respected. So if remote refs move, the server will send two chunks: one between "have" and "want" and another to extend shallow history. In theory, the client could send no "want"s in order to get the second chunk only. But the protocol does not allow that. Either you send no want lines, which means ls-remote; or you have to send at least one want line that carries deep-relative to the server.. The main work was done by Dongcan Jiang. I fixed it up here and there. And of course all the bugs belong to me. (*) We could even support --deepen=<N> where <N> is negative. In that case we can cut some history from the shallow clone. This operation (and --depth=<shorter depth>) does not require interaction with remote side (and more complicated to implement as a result). Helped-by: Duy Nguyen <pclouds@gmail.com> Helped-by: Eric Sunshine <sunshine@sunshineco.com> Helped-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Dongcan Jiang <dongcan.jiang@gmail.com> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
150 lines
3.9 KiB
Bash
Executable file
150 lines
3.9 KiB
Bash
Executable file
#!/bin/sh
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test_description='fetch/clone from a shallow clone over http'
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. ./test-lib.sh
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. "$TEST_DIRECTORY"/lib-httpd.sh
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start_httpd
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commit() {
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echo "$1" >tracked &&
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git add tracked &&
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git commit -m "$1"
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}
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test_expect_success 'setup shallow clone' '
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commit 1 &&
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commit 2 &&
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commit 3 &&
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commit 4 &&
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commit 5 &&
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commit 6 &&
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commit 7 &&
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git clone --no-local --depth=5 .git shallow &&
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git config --global transfer.fsckObjects true
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'
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test_expect_success 'clone http repository' '
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git clone --bare --no-local shallow "$HTTPD_DOCUMENT_ROOT_PATH/repo.git" &&
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git clone $HTTPD_URL/smart/repo.git clone &&
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(
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cd clone &&
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git fsck &&
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git log --format=%s origin/master >actual &&
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cat <<EOF >expect &&
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7
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6
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5
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4
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3
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EOF
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test_cmp expect actual
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)
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'
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# This test is tricky. We need large enough "have"s that fetch-pack
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# will put pkt-flush in between. Then we need a "have" the server
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# does not have, it'll send "ACK %s ready"
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test_expect_success 'no shallow lines after receiving ACK ready' '
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(
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cd shallow &&
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test_tick &&
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for i in $(test_seq 15)
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do
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git checkout --orphan unrelated$i &&
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test_commit unrelated$i &&
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git push -q "$HTTPD_DOCUMENT_ROOT_PATH/repo.git" \
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refs/heads/unrelated$i:refs/heads/unrelated$i &&
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git push -q ../clone/.git \
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refs/heads/unrelated$i:refs/heads/unrelated$i ||
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exit 1
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done &&
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git checkout master &&
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test_commit new &&
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git push "$HTTPD_DOCUMENT_ROOT_PATH/repo.git" master
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) &&
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(
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cd clone &&
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git checkout --orphan newnew &&
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test_commit new-too &&
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GIT_TRACE_PACKET="$TRASH_DIRECTORY/trace" git fetch --depth=2 &&
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grep "fetch-pack< ACK .* ready" ../trace &&
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! grep "fetch-pack> done" ../trace
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)
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'
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test_expect_success 'clone shallow since ...' '
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test_create_repo shallow-since &&
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(
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cd shallow-since &&
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GIT_COMMITTER_DATE="100000000 +0700" git commit --allow-empty -m one &&
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GIT_COMMITTER_DATE="200000000 +0700" git commit --allow-empty -m two &&
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GIT_COMMITTER_DATE="300000000 +0700" git commit --allow-empty -m three &&
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mv .git "$HTTPD_DOCUMENT_ROOT_PATH/shallow-since.git" &&
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git clone --shallow-since "300000000 +0700" $HTTPD_URL/smart/shallow-since.git ../shallow11 &&
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git -C ../shallow11 log --pretty=tformat:%s HEAD >actual &&
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echo three >expected &&
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test_cmp expected actual
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)
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'
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test_expect_success 'fetch shallow since ...' '
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git -C shallow11 fetch --shallow-since "200000000 +0700" origin &&
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git -C shallow11 log --pretty=tformat:%s origin/master >actual &&
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cat >expected <<-\EOF &&
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three
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two
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EOF
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test_cmp expected actual
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'
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test_expect_success 'shallow clone exclude tag two' '
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test_create_repo shallow-exclude &&
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(
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cd shallow-exclude &&
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test_commit one &&
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test_commit two &&
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test_commit three &&
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mv .git "$HTTPD_DOCUMENT_ROOT_PATH/shallow-exclude.git" &&
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git clone --shallow-exclude two $HTTPD_URL/smart/shallow-exclude.git ../shallow12 &&
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git -C ../shallow12 log --pretty=tformat:%s HEAD >actual &&
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echo three >expected &&
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test_cmp expected actual
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)
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'
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test_expect_success 'fetch exclude tag one' '
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git -C shallow12 fetch --shallow-exclude one origin &&
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git -C shallow12 log --pretty=tformat:%s origin/master >actual &&
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test_write_lines three two >expected &&
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test_cmp expected actual
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'
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test_expect_success 'fetching deepen' '
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test_create_repo shallow-deepen &&
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(
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cd shallow-deepen &&
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test_commit one &&
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test_commit two &&
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test_commit three &&
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mv .git "$HTTPD_DOCUMENT_ROOT_PATH/shallow-deepen.git" &&
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git clone --depth 1 $HTTPD_URL/smart/shallow-deepen.git deepen &&
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mv "$HTTPD_DOCUMENT_ROOT_PATH/shallow-deepen.git" .git &&
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test_commit four &&
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git -C deepen log --pretty=tformat:%s master >actual &&
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echo three >expected &&
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test_cmp expected actual &&
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mv .git "$HTTPD_DOCUMENT_ROOT_PATH/shallow-deepen.git" &&
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git -C deepen fetch --deepen=1 &&
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git -C deepen log --pretty=tformat:%s origin/master >actual &&
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cat >expected <<-\EOF &&
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four
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three
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two
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EOF
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test_cmp expected actual
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)
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'
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stop_httpd
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test_done
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