Teach upload-pack to log the received need lines to an fd
To facilitate testing and verification of the requests sent by
git-fetch to the remote side we permit logging the received packet
lines to the file descriptor specified in GIT_DEBUG_SEND_PACK has
been set. Special start and end lines are included to indicate
the start and end of each connection.
$ GIT_DEBUG_SEND_PACK=3 git fetch 3>UPLOAD_LOG
$ cat UPLOAD_LOG
#S
want 8e10cf4e007ad7e003463c30c34b1050b039db78 multi_ack side-band-64k thin-pack ofs-delta
want ddfa4a33562179aca1ace2bcc662244a17d0b503
#E
#S
want 3253df4d1cf6fb138b52b1938473bcfec1483223 multi_ack side-band-64k thin-pack ofs-delta
#E
>From the above trace the first connection opened by git-fetch was to
download two refs (with values 8e and dd) and the second connection
was opened to automatically follow an annotated tag (32).
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/upload-pack.c b/upload-pack.c
index e5421db..660134a 100644
--- a/upload-pack.c
+++ b/upload-pack.c
@@ -35,6 +35,7 @@
* otherwise maximum packet size (up to 65520 bytes).
*/
static int use_sideband;
+static int debug_fd;
static void reset_timeout(void)
{
@@ -444,6 +445,8 @@
static char line[1000];
int len, depth = 0;
+ if (debug_fd)
+ write_in_full(debug_fd, "#S\n", 3);
for (;;) {
struct object *o;
unsigned char sha1_buf[20];
@@ -451,6 +454,8 @@
reset_timeout();
if (!len)
break;
+ if (debug_fd)
+ write_in_full(debug_fd, line, len);
if (!prefixcmp(line, "shallow ")) {
unsigned char sha1[20];
@@ -506,6 +511,8 @@
add_object_array(o, NULL, &want_obj);
}
}
+ if (debug_fd)
+ write_in_full(debug_fd, "#E\n", 3);
if (depth == 0 && shallows.nr == 0)
return;
if (depth > 0) {
@@ -631,6 +638,8 @@
die("'%s': unable to chdir or not a git archive", dir);
if (is_repository_shallow())
die("attempt to fetch/clone from a shallow repository");
+ if (getenv("GIT_DEBUG_SEND_PACK"))
+ debug_fd = atoi(getenv("GIT_DEBUG_SEND_PACK"));
upload_pack();
return 0;
}
