This gives us an opportunity to abort the command during remote HEAD
check without wasting much bandwidth.
Cloning with remote-helper remains before the check because the remote
helper updates mapped_refs, which is necessary for remote ref checks.
foreign_vcs field is used to indicate the transport is handled by
remote helper.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
builtin/clone.c | 54 +++++++++++++++++++++++++++---------------------------
transport.c | 5 ++++-
2 files changed, 31 insertions(+), 28 deletions(-)
diff --git a/builtin/clone.c b/builtin/clone.c
index d1d6dca..a9d06a4 100644
--- a/builtin/clone.c
+++ b/builtin/clone.c
@@ -361,13 +361,8 @@ static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest,
closedir(dir);
}
-static const struct ref *clone_local(const char *src_repo,
- const char *dest_repo)
+static void clone_local(const char *src_repo, const char *dest_repo)
{
- const struct ref *ret;
- struct remote *remote;
- struct transport *transport;
-
if (option_shared) {
struct strbuf alt = STRBUF_INIT;
strbuf_addf(&alt, "%s/objects", src_repo);
@@ -383,13 +378,8 @@ static const struct ref *clone_local(const char *src_repo,
strbuf_release(&dest);
}
- remote = remote_get(src_repo);
- transport = transport_get(remote, src_repo);
- ret = transport_get_remote_refs(transport);
- transport_disconnect(transport);
if (0 <= option_verbosity)
printf(_("done.\n"));
- return ret;
}
static const char *junk_work_tree;
@@ -581,6 +571,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT;
struct transport *transport = NULL;
char *src_ref_prefix = "refs/heads/";
+ struct remote *remote;
int err = 0;
struct refspec *refspec;
@@ -732,13 +723,10 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
strbuf_reset(&value);
- if (is_local) {
- refs = clone_local(path, git_dir);
- mapped_refs = wanted_peer_refs(refs, refspec);
- } else {
- struct remote *remote = remote_get(option_origin);
- transport = transport_get(remote, remote->url[0]);
+ remote = remote_get(option_origin);
+ transport = transport_get(remote, remote->url[0]);
+ if (!is_local) {
if (!transport->get_refs_list || !transport->fetch)
die(_("Don't know how to clone %s"), transport->url);
@@ -753,14 +741,23 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
if (option_upload_pack)
transport_set_option(transport, TRANS_OPT_UPLOADPACK,
option_upload_pack);
-
- refs = transport_get_remote_refs(transport);
- if (refs) {
- mapped_refs = wanted_peer_refs(refs, refspec);
- transport_fetch_refs(transport, mapped_refs);
- }
}
+ refs = transport_get_remote_refs(transport);
+ mapped_refs = refs ? wanted_peer_refs(refs, refspec) : NULL;
+
+ /*
+ * mapped_refs may be updated if transport-helper is used so
+ * we need fetch it early because remote_head code below
+ * relies on it.
+ *
+ * for normal clones, transport_get_remote_refs() should
+ * return reliable ref set, we can delay cloning until after
+ * remote HEAD check.
+ */
+ if (!is_local && remote->foreign_vcs && refs)
+ transport_fetch_refs(transport, mapped_refs);
+
if (refs) {
remote_head = find_ref_by_name(refs, "HEAD");
remote_head_points_at =
@@ -795,15 +792,18 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
"refs/heads/master");
}
+ if (is_local)
+ clone_local(path, git_dir);
+ else if (refs && !remote->foreign_vcs)
+ transport_fetch_refs(transport, mapped_refs);
+
update_remote_refs(refs, mapped_refs, remote_head_points_at,
branch_top.buf, reflog_msg.buf);
update_head(our_head_points_at, remote_head, reflog_msg.buf);
- if (transport) {
- transport_unlock_pack(transport);
- transport_disconnect(transport);
- }
+ transport_unlock_pack(transport);
+ transport_disconnect(transport);
err = checkout();
diff --git a/transport.c b/transport.c
index a99b7c9..4366639 100644
--- a/transport.c
+++ b/transport.c
@@ -895,8 +895,10 @@ struct transport *transport_get(struct remote *remote, const char *url)
while (is_urlschemechar(p == url, *p))
p++;
- if (!prefixcmp(p, "::"))
+ if (!prefixcmp(p, "::")) {
helper = xstrndup(url, p - url);
+ remote->foreign_vcs = helper;
+ }
}
if (helper) {
@@ -938,6 +940,7 @@ struct transport *transport_get(struct remote *remote, const char *url)
char *handler = xmalloc(len + 1);
handler[len] = 0;
strncpy(handler, url, len);
+ remote->foreign_vcs = handler;
transport_helper_init(ret, handler);
}
--
1.7.3.1.256.g2539c.dirty
--
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