diff mbox series

[v5,5/6] transport-helper: call do_take_over() in connect_helper

Message ID 6ac0c8e105febe526dc64182845832297656a8a5.1705411391.git.zhiyou.jx@alibaba-inc.com (mailing list archive)
State Superseded
Headers show
Series support remote archive via stateless transport | expand

Commit Message

Jiang Xin Jan. 16, 2024, 1:39 p.m. UTC
From: Jiang Xin <zhiyou.jx@alibaba-inc.com>

After successfully connecting to the smart transport by calling
process_connect_service() in connect_helper(), run do_take_over() to
replace the old vtable with a new one which has methods ready for the
smart transport connection. This will fix the exit code of git-archive
in test case "archive remote http repository" of t5003.

The connect_helper() function is used as the connect method of the
vtable in "transport-helper.c", and it is called by transport_connect()
in "transport.c" to setup a connection. The only place that we call
transport_connect() so far is in "builtin/archive.c". Without running
do_take_over(), it may fail to call transport_disconnect() in
run_remote_archiver() of "builtin/archive.c". This is because for a
stateless connection and a service like "git-upload-archive", the
remote helper may receive a SIGPIPE signal and exit early. To have a
graceful disconnect method by calling do_take_over() will solve this
issue.

Helped-by: Linus Arver <linusa@google.com>
Signed-off-by: Jiang Xin <zhiyou.jx@alibaba-inc.com>
---
 t/t5003-archive-zip.sh | 2 +-
 transport-helper.c     | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

Comments

Linus Arver Jan. 20, 2024, 8:37 p.m. UTC | #1
Jiang Xin <worldhello.net@gmail.com> writes:

> From: Jiang Xin <zhiyou.jx@alibaba-inc.com>
>
> After successfully connecting to the smart transport by calling
> process_connect_service() in connect_helper(), run do_take_over() to
> replace the old vtable with a new one which has methods ready for the
> smart transport connection. This will fix the exit code of git-archive

s/will fix/fixes

> in test case "archive remote http repository" of t5003.
>
> The connect_helper() function is used as the connect method of the
> vtable in "transport-helper.c", and it is called by transport_connect()
> in "transport.c" to setup a connection. The only place that we call
> transport_connect() so far is in "builtin/archive.c". Without running
> do_take_over(), it may fail to call transport_disconnect() in
> run_remote_archiver() of "builtin/archive.c". This is because for a
> stateless connection and a service like "git-upload-archive", the
> remote helper may receive a SIGPIPE signal and exit early.

OK.

> To have a
> graceful disconnect method by calling do_take_over() will solve this
> issue.

How about rewording to

    Call do_take_over() to have a graceful disconnect method, so that we
    still call transport_disconnect() even if the remote helper exits
    early.

to make "this issue" more explicit?

> Helped-by: Linus Arver <linusa@google.com>
> Signed-off-by: Jiang Xin <zhiyou.jx@alibaba-inc.com>
> ---
>  t/t5003-archive-zip.sh | 2 +-
>  transport-helper.c     | 2 ++
>  2 files changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/t/t5003-archive-zip.sh b/t/t5003-archive-zip.sh
> index 6f85bd3463..961c6aac25 100755
> --- a/t/t5003-archive-zip.sh
> +++ b/t/t5003-archive-zip.sh
> @@ -268,7 +268,7 @@ test_expect_success 'remote archive does not work with protocol v1' '
>  '
>  
>  test_expect_success 'archive remote http repository' '
> -	test_must_fail git archive --remote="$HTTPD_URL/auth/smart/bare.git" \
> +	git archive --remote="$HTTPD_URL/auth/smart/bare.git" \
>  		--output=remote-http.zip HEAD &&
>  	test_cmp_bin d.zip remote-http.zip
>  '
> diff --git a/transport-helper.c b/transport-helper.c
> index 6fe9f4f208..91381be622 100644
> --- a/transport-helper.c
> +++ b/transport-helper.c
> @@ -669,6 +669,8 @@ static int connect_helper(struct transport *transport, const char *name,
>  
>  	fd[0] = data->helper->out;
>  	fd[1] = data->helper->in;
> +
> +	do_take_over(transport);
>  	return 0;
>  }
>  
> -- 
> 2.43.0
diff mbox series

Patch

diff --git a/t/t5003-archive-zip.sh b/t/t5003-archive-zip.sh
index 6f85bd3463..961c6aac25 100755
--- a/t/t5003-archive-zip.sh
+++ b/t/t5003-archive-zip.sh
@@ -268,7 +268,7 @@  test_expect_success 'remote archive does not work with protocol v1' '
 '
 
 test_expect_success 'archive remote http repository' '
-	test_must_fail git archive --remote="$HTTPD_URL/auth/smart/bare.git" \
+	git archive --remote="$HTTPD_URL/auth/smart/bare.git" \
 		--output=remote-http.zip HEAD &&
 	test_cmp_bin d.zip remote-http.zip
 '
diff --git a/transport-helper.c b/transport-helper.c
index 6fe9f4f208..91381be622 100644
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -669,6 +669,8 @@  static int connect_helper(struct transport *transport, const char *name,
 
 	fd[0] = data->helper->out;
 	fd[1] = data->helper->in;
+
+	do_take_over(transport);
 	return 0;
 }