зеркало из https://github.com/microsoft/git.git
vcs-svn: set up channel to read fast-import cat-blob response
Set up some plumbing: teach the svndump lib to pass a file descriptor number to the fast_export lib, representing where cat-blob/ls responses can be read from, and add a get_response_line helper function to the fast_export lib to read a line from that file. Unfortunately this means that svn-fe needs file descriptor 3 to be redirected from somewhere (preferrably the cat-blob stream of a fast-import backend); otherwise it will fail: $ svndump <path> | svn-fe fatal: cannot read from file descriptor 3: Bad file descriptor For the moment, "svn-fe 3</dev/null" works as a workaround but it will not work for very long. A fast-import backend that can retrieve old commits is needed in order to be able to fulfill svn "Node-copyfrom-rev" requests that refer to revs from a previous run. [jn: with new change description] Based-on-patch-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: David Barr <david.barr@cordelta.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
This commit is contained in:
David Barr
Jonathan Nieder
Родитель
efc749b48f
Коммит
41529bbce4
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@ -7,7 +7,11 @@ svn-fe - convert an SVN "dumpfile" to a fast-import stream
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SYNOPSIS
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--------
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svnadmin dump --incremental REPO | svn-fe [url] | git fast-import
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[verse]
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mkfifo backchannel &&
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svnadmin dump --incremental REPO |
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svn-fe [url] 3<backchannel |
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git fast-import --cat-blob-fd=3 3>backchannel
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DESCRIPTION
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-----------
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@ -5,8 +5,26 @@ test_description='check svn dumpfile importer'
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. ./test-lib.sh
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reinit_git () {
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if ! test_declared_prereq PIPE
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then
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echo >&4 "reinit_git: need to declare PIPE prerequisite"
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return 127
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fi
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rm -fr .git &&
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git init
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rm -f stream backflow &&
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git init &&
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mkfifo stream backflow
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}
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try_dump () {
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input=$1 &&
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maybe_fail=${2:+test_$2} &&
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{
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$maybe_fail test-svn-fe "$input" >stream 3<backflow &
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} &&
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git fast-import --cat-blob-fd=3 <stream 3>backflow &&
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wait $!
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}
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properties () {
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@ -35,21 +53,27 @@ text_no_props () {
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>empty
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test_expect_success 'empty dump' '
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test_expect_success 'setup: have pipes?' '
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rm -f frob &&
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if mkfifo frob
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then
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test_set_prereq PIPE
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fi
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'
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test_expect_success PIPE 'empty dump' '
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reinit_git &&
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echo "SVN-fs-dump-format-version: 2" >input &&
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test-svn-fe input >stream &&
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git fast-import <stream
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try_dump input
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'
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test_expect_success 'v4 dumps not supported' '
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test_expect_success PIPE 'v4 dumps not supported' '
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reinit_git &&
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echo "SVN-fs-dump-format-version: 4" >v4.dump &&
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test_must_fail test-svn-fe v4.dump >stream &&
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test_cmp empty stream
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try_dump v4.dump must_fail
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'
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test_expect_failure 'empty revision' '
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test_expect_failure PIPE 'empty revision' '
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reinit_git &&
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printf "rev <nobody, nobody@local>: %s\n" "" "" >expect &&
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cat >emptyrev.dump <<-\EOF &&
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@ -64,13 +88,12 @@ test_expect_failure 'empty revision' '
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Content-length: 0
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EOF
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test-svn-fe emptyrev.dump >stream &&
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git fast-import <stream &&
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try_dump emptyrev.dump &&
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git log -p --format="rev <%an, %ae>: %s" HEAD >actual &&
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test_cmp expect actual
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'
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test_expect_success 'empty properties' '
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test_expect_success PIPE 'empty properties' '
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reinit_git &&
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printf "rev <nobody, nobody@local>: %s\n" "" "" >expect &&
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cat >emptyprop.dump <<-\EOF &&
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@ -88,13 +111,12 @@ test_expect_success 'empty properties' '
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PROPS-END
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EOF
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test-svn-fe emptyprop.dump >stream &&
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git fast-import <stream &&
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try_dump emptyprop.dump &&
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git log -p --format="rev <%an, %ae>: %s" HEAD >actual &&
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test_cmp expect actual
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'
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test_expect_success 'author name and commit message' '
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test_expect_success PIPE 'author name and commit message' '
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reinit_git &&
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echo "<author@example.com, author@example.com@local>" >expect.author &&
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cat >message <<-\EOF &&
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@ -121,15 +143,14 @@ test_expect_success 'author name and commit message' '
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echo &&
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cat props
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} >log.dump &&
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test-svn-fe log.dump >stream &&
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git fast-import <stream &&
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try_dump log.dump &&
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git log -p --format="%B" HEAD >actual.log &&
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git log --format="<%an, %ae>" >actual.author &&
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test_cmp message actual.log &&
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test_cmp expect.author actual.author
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'
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test_expect_success 'unsupported properties are ignored' '
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test_expect_success PIPE 'unsupported properties are ignored' '
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reinit_git &&
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echo author >expect &&
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cat >extraprop.dump <<-\EOF &&
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@ -149,13 +170,12 @@ test_expect_success 'unsupported properties are ignored' '
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author
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PROPS-END
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EOF
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test-svn-fe extraprop.dump >stream &&
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git fast-import <stream &&
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try_dump extraprop.dump &&
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git log -p --format=%an HEAD >actual &&
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test_cmp expect actual
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'
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test_expect_failure 'timestamp and empty file' '
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test_expect_failure PIPE 'timestamp and empty file' '
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echo author@example.com >expect.author &&
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echo 1999-01-01 >expect.date &&
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echo file >expect.files &&
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@ -186,8 +206,7 @@ test_expect_failure 'timestamp and empty file' '
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EOF
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} >emptyfile.dump &&
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test-svn-fe emptyfile.dump >stream &&
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git fast-import <stream &&
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try_dump emptyfile.dump &&
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git log --format=%an HEAD >actual.author &&
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git log --date=short --format=%ad HEAD >actual.date &&
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git ls-tree -r --name-only HEAD >actual.files &&
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@ -198,7 +217,7 @@ test_expect_failure 'timestamp and empty file' '
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test_cmp empty file
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'
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test_expect_success 'directory with files' '
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test_expect_success PIPE 'directory with files' '
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reinit_git &&
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printf "%s\n" directory/file1 directory/file2 >expect.files &&
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echo hi >hi &&
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@ -242,8 +261,7 @@ test_expect_success 'directory with files' '
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EOF
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text_no_props hi
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} >directory.dump &&
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test-svn-fe directory.dump >stream &&
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git fast-import <stream &&
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try_dump directory.dump &&
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git ls-tree -r --name-only HEAD >actual.files &&
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git checkout HEAD directory &&
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@ -252,7 +270,8 @@ test_expect_success 'directory with files' '
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test_cmp hi directory/file2
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'
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test_expect_success 'node without action' '
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test_expect_success PIPE 'node without action' '
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reinit_git &&
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cat >inaction.dump <<-\EOF &&
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SVN-fs-dump-format-version: 3
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@ -269,10 +288,11 @@ test_expect_success 'node without action' '
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PROPS-END
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EOF
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test_must_fail test-svn-fe inaction.dump
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try_dump inaction.dump must_fail
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'
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test_expect_success 'action: add node without text' '
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test_expect_success PIPE 'action: add node without text' '
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reinit_git &&
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cat >textless.dump <<-\EOF &&
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SVN-fs-dump-format-version: 3
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@ -290,10 +310,10 @@ test_expect_success 'action: add node without text' '
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PROPS-END
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EOF
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test_must_fail test-svn-fe textless.dump
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try_dump textless.dump must_fail
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'
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test_expect_failure 'change file mode but keep old content' '
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test_expect_failure PIPE 'change file mode but keep old content' '
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reinit_git &&
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cat >expect <<-\EOF &&
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OBJID
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@ -356,8 +376,7 @@ test_expect_failure 'change file mode but keep old content' '
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PROPS-END
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EOF
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test-svn-fe filemode.dump >stream &&
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git fast-import <stream &&
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try_dump filemode.dump &&
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{
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git rev-list HEAD |
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git diff-tree --root --stdin |
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@ -370,7 +389,7 @@ test_expect_failure 'change file mode but keep old content' '
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test_cmp hello actual.target
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'
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test_expect_success 'change file mode and reiterate content' '
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test_expect_success PIPE 'change file mode and reiterate content' '
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reinit_git &&
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cat >expect <<-\EOF &&
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OBJID
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@ -382,7 +401,7 @@ test_expect_success 'change file mode and reiterate content' '
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EOF
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echo "link hello" >expect.blob &&
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echo hello >hello &&
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cat >filemode.dump <<-\EOF &&
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cat >filemode2.dump <<-\EOF &&
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SVN-fs-dump-format-version: 3
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Revision-number: 1
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@ -437,8 +456,7 @@ test_expect_success 'change file mode and reiterate content' '
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PROPS-END
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link hello
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EOF
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test-svn-fe filemode.dump >stream &&
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git fast-import <stream &&
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try_dump filemode2.dump &&
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{
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git rev-list HEAD |
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git diff-tree --root --stdin |
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@ -451,7 +469,8 @@ test_expect_success 'change file mode and reiterate content' '
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test_cmp hello actual.target
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'
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test_expect_success 'deltas not supported' '
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test_expect_success PIPE 'deltas not supported' '
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reinit_git &&
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{
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# (old) h + (inline) ello + (old) \n
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printf "SVNQ%b%b%s" "Q\003\006\005\004" "\001Q\0204\001\002" "ello" |
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@ -511,10 +530,10 @@ test_expect_success 'deltas not supported' '
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echo PROPS-END &&
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cat delta
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} >delta.dump &&
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test_must_fail test-svn-fe delta.dump
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test_must_fail try_dump delta.dump
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'
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test_expect_success 'property deltas supported' '
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test_expect_success PIPE 'property deltas supported' '
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reinit_git &&
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cat >expect <<-\EOF &&
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OBJID
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@ -570,8 +589,7 @@ test_expect_success 'property deltas supported' '
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PROPS-END
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EOF
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} >propdelta.dump &&
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test-svn-fe propdelta.dump >stream &&
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git fast-import <stream &&
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try_dump propdelta.dump &&
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{
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git rev-list HEAD |
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git diff-tree --stdin |
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@ -580,7 +598,7 @@ test_expect_success 'property deltas supported' '
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test_cmp expect actual
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'
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test_expect_success 'properties on /' '
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test_expect_success PIPE 'properties on /' '
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reinit_git &&
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cat <<-\EOF >expect &&
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OBJID
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@ -625,8 +643,7 @@ test_expect_success 'properties on /' '
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PROPS-END
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EOF
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test-svn-fe changeroot.dump >stream &&
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git fast-import <stream &&
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try_dump changeroot.dump &&
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{
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git rev-list HEAD |
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git diff-tree --root --always --stdin |
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@ -635,7 +652,7 @@ test_expect_success 'properties on /' '
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test_cmp expect actual
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'
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test_expect_success 'deltas for typechange' '
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test_expect_success PIPE 'deltas for typechange' '
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reinit_git &&
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cat >expect <<-\EOF &&
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OBJID
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@ -711,8 +728,7 @@ test_expect_success 'deltas for typechange' '
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PROPS-END
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link testing 321
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EOF
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test-svn-fe deleteprop.dump >stream &&
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git fast-import <stream &&
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try_dump deleteprop.dump &&
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{
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git rev-list HEAD |
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git diff-tree --root --stdin |
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@ -736,12 +752,12 @@ test_expect_success 'set up svn repo' '
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fi
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'
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test_expect_success SVNREPO 't9135/svn.dump' '
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git init simple-git &&
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test-svn-fe "$TEST_DIRECTORY/t9135/svn.dump" >simple.fe &&
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test_expect_success SVNREPO,PIPE 't9135/svn.dump' '
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mkdir -p simple-git &&
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(
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cd simple-git &&
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git fast-import <../simple.fe
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reinit_git &&
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try_dump "$TEST_DIRECTORY/t9135/svn.dump"
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) &&
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(
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cd simple-svnco &&
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@ -12,6 +12,24 @@
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#define MAX_GITSVN_LINE_LEN 4096
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static uint32_t first_commit_done;
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static struct line_buffer report_buffer = LINE_BUFFER_INIT;
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void fast_export_init(int fd)
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{
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if (buffer_fdinit(&report_buffer, fd))
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die_errno("cannot read from file descriptor %d", fd);
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}
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void fast_export_deinit(void)
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{
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if (buffer_deinit(&report_buffer))
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die_errno("error closing fast-import feedback stream");
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}
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void fast_export_reset(void)
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{
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buffer_reset(&report_buffer);
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}
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void fast_export_delete(uint32_t depth, uint32_t *path)
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{
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@ -63,6 +81,16 @@ void fast_export_commit(uint32_t revision, uint32_t author, char *log,
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printf("progress Imported commit %"PRIu32".\n\n", revision);
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}
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static const char *get_response_line(void)
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{
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const char *line = buffer_read_line(&report_buffer);
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if (line)
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return line;
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if (buffer_ferror(&report_buffer))
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die_errno("error reading from fast-import");
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die("unexpected end of fast-import feedback");
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}
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void fast_export_blob(uint32_t mode, uint32_t mark, uint32_t len, struct line_buffer *input)
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{
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if (mode == REPO_MODE_LNK) {
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@ -3,6 +3,10 @@
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#include "line_buffer.h"
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void fast_export_init(int fd);
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void fast_export_deinit(void);
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void fast_export_reset(void);
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void fast_export_delete(uint32_t depth, uint32_t *path);
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void fast_export_modify(uint32_t depth, uint32_t *path, uint32_t mode,
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uint32_t mark);
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@ -14,6 +14,8 @@
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#include "obj_pool.h"
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#include "string_pool.h"
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#define REPORT_FILENO 3
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#define NODEACT_REPLACE 4
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#define NODEACT_DELETE 3
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#define NODEACT_ADD 2
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@ -367,6 +369,7 @@ int svndump_init(const char *filename)
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if (buffer_init(&input, filename))
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return error("cannot open %s: %s", filename, strerror(errno));
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repo_init();
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fast_export_init(REPORT_FILENO);
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reset_dump_ctx(~0);
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reset_rev_ctx(0);
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reset_node_ctx(NULL);
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@ -377,6 +380,7 @@ int svndump_init(const char *filename)
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void svndump_deinit(void)
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{
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log_reset();
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fast_export_deinit();
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repo_reset();
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reset_dump_ctx(~0);
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reset_rev_ctx(0);
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@ -390,6 +394,7 @@ void svndump_deinit(void)
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void svndump_reset(void)
|
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{
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log_reset();
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fast_export_reset();
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buffer_reset(&input);
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repo_reset();
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reset_dump_ctx(~0);
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