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send-pack: don't update tracking refs on error

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Previously, we updated the tracking refs (which match refs we
are pushing) while generating the list of refs to send.
However, at that point we don't know whether the refs were
accepted.

Instead, we now wait until we get a response code from the
server. If an error was indicated, we don't update any local
tracking refs. Technically some refs could have been updated
on the remote, but since the local ref update is just an
optimization to avoid an extra fetch, we are better off
erring on the side of correctness.

The user-visible message is now generated much later in the
program, and has been tweaked to make more sense.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
This commit is contained in:
Jeff King 2007-10-18 02:19:15 -04:00 committed by Shawn O. Pearce
parent de61e42b53
commit 334f4831e5
1 changed files with 34 additions and 16 deletions
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50
send-pack.c
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@ -178,6 +178,35 @@ static int receive_status(int in)
return ret;
}
static void update_tracking_ref(struct remote *remote, struct ref *ref)
{
struct refspec rs;
int will_delete_ref;
rs.src = ref->name;
rs.dst = NULL;
if (!ref->peer_ref)
return;
will_delete_ref = is_null_sha1(ref->peer_ref->new_sha1);
if (!will_delete_ref &&
!hashcmp(ref->old_sha1, ref->peer_ref->new_sha1))
return;
if (!remote_find_tracking(remote, &rs)) {
fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
if (is_null_sha1(ref->peer_ref->new_sha1)) {
if (delete_ref(rs.dst, NULL))
error("Failed to delete");
} else
update_ref("update by push", rs.dst,
ref->new_sha1, NULL, 0, 0);
free(rs.dst);
}
}
static int send_pack(int in, int out, struct remote *remote, int nr_refspec, char **refspec)
{
struct ref *ref;
@ -306,22 +335,6 @@ static int send_pack(int in, int out, struct remote *remote, int nr_refspec, cha
fprintf(stderr, "\n from %s\n to %s\n",
old_hex, new_hex);
}
if (remote && !dry_run) {
struct refspec rs;
rs.src = ref->name;
rs.dst = NULL;
if (!remote_find_tracking(remote, &rs)) {
fprintf(stderr, " Also local %s\n", rs.dst);
if (will_delete_ref) {
if (delete_ref(rs.dst, NULL)) {
error("Failed to delete");
}
} else
update_ref("update by push", rs.dst,
ref->new_sha1, NULL, 0, 0);
free(rs.dst);
}
}
}
packet_flush(out);
@ -334,6 +347,11 @@ static int send_pack(int in, int out, struct remote *remote, int nr_refspec, cha
ret = -4;
}
if (!dry_run && remote && ret == 0) {
for (ref = remote_refs; ref; ref = ref->next)
update_tracking_ref(remote, ref);
}
if (!new_refs && ret == 0)
fprintf(stderr, "Everything up-to-date\n");
return ret;