From: "Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>
To: git@vger.kernel.org
Cc: "Junio C Hamano" <gitster@pobox.com>, "Jeff King" <peff@peff.net>,
"Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>
Subject: [PATCH v3 06/10] clone: delay cloning until after remote HEAD checking
Date: Tue, 10 Jan 2012 16:57:03 +0700 [thread overview]
Message-ID: <1326189427-20800-7-git-send-email-pclouds@gmail.com> (raw)
In-Reply-To: <1326023188-15559-1-git-send-email-pclouds@gmail.com>
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.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
I'm not familiar with remote-helper to see if there's any better way
to do this..
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 73d07ed..05224d7 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;
@@ -576,6 +566,7 @@ 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;
@@ -727,13 +718,10 @@ 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);
@@ -748,14 +736,23 @@ 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 =
@@ -790,15 +787,18 @@ 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..aae9889 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 = helper;
transport_helper_init(ret, handler);
}
--
1.7.3.1.256.g2539c.dirty
next prev parent reply other threads:[~2012-01-10 9:58 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-05 13:49 [PATCH] clone: allow detached checkout when --branch takes a tag Nguyễn Thái Ngọc Duy
2012-01-05 14:18 ` Jeff King
2012-01-06 11:09 ` Nguyen Thai Ngoc Duy
2012-01-06 14:42 ` Jeff King
2012-01-05 16:22 ` Junio C Hamano
2012-01-06 7:35 ` Nguyen Thai Ngoc Duy
2012-01-08 11:46 ` [PATCH v2 1/6] t5601: add && Nguyễn Thái Ngọc Duy
2012-01-08 11:46 ` [PATCH v2 2/6] clone: write detached HEAD in bare repositories Nguyễn Thái Ngọc Duy
2012-01-08 11:46 ` [PATCH v2 3/6] clone: factor out checkout code Nguyễn Thái Ngọc Duy
2012-01-10 0:32 ` Junio C Hamano
2012-01-10 2:01 ` Nguyen Thai Ngoc Duy
2012-01-10 4:59 ` Junio C Hamano
2012-01-10 5:57 ` Nguyen Thai Ngoc Duy
2012-01-08 11:46 ` [PATCH v2 4/6] clone: --branch=<branch> always means refs/heads/<branch> Nguyễn Thái Ngọc Duy
2012-01-10 0:33 ` Junio C Hamano
2012-01-08 11:46 ` [PATCH v2 5/6] clone: allow --branch to take a tag Nguyễn Thái Ngọc Duy
2012-01-08 11:46 ` [PATCH v2 6/6] clone: print advice on checking out detached HEAD Nguyễn Thái Ngọc Duy
2012-01-10 0:36 ` Junio C Hamano
2012-01-10 1:54 ` Nguyen Thai Ngoc Duy
2012-01-10 4:49 ` Junio C Hamano
2012-01-10 5:54 ` Nguyen Thai Ngoc Duy
2012-01-10 9:56 ` [PATCH v3 00/10] nd/clone-detached Nguyễn Thái Ngọc Duy
2012-01-13 7:21 ` [PATCH v4 " Nguyễn Thái Ngọc Duy
2012-01-13 19:52 ` Junio C Hamano
2012-01-14 4:48 ` Nguyen Thai Ngoc Duy
2012-01-14 6:53 ` Junio C Hamano
2012-01-14 7:40 ` Nguyen Thai Ngoc Duy
2012-01-15 2:34 ` Junio C Hamano
2012-01-16 9:46 ` [PATCH v5 00/10] nd/clone-detached rebase onto nd/clone-single-branch Nguyễn Thái Ngọc Duy
2012-01-16 9:46 ` [PATCH v5 01/10] t5601: add missing && cascade Nguyễn Thái Ngọc Duy
2012-01-16 9:46 ` [PATCH v5 02/10] clone: write detached HEAD in bare repositories Nguyễn Thái Ngọc Duy
2012-01-16 9:46 ` [PATCH v5 03/10] clone: factor out checkout code Nguyễn Thái Ngọc Duy
2012-01-16 9:46 ` [PATCH v5 04/10] clone: factor out HEAD update code Nguyễn Thái Ngọc Duy
2012-01-16 9:46 ` [PATCH v5 05/10] clone: factor out remote ref writing Nguyễn Thái Ngọc Duy
2012-01-16 9:46 ` [PATCH v5 06/10] clone: delay cloning until after remote HEAD checking Nguyễn Thái Ngọc Duy
2012-01-16 9:46 ` [PATCH v5 07/10] clone: --branch=<branch> always means refs/heads/<branch> Nguyễn Thái Ngọc Duy
2012-01-16 9:46 ` [PATCH v5 08/10] clone: refuse to clone if --branch points to bogus ref Nguyễn Thái Ngọc Duy
2012-01-16 9:46 ` [PATCH v5 09/10] clone: allow --branch to take a tag Nguyễn Thái Ngọc Duy
2012-01-16 9:46 ` [PATCH v5 10/10] clone: print advice on checking out detached HEAD Nguyễn Thái Ngọc Duy
2012-01-13 7:21 ` [PATCH v4 01/10] t5601: add missing && cascade Nguyễn Thái Ngọc Duy
2012-01-13 7:21 ` [PATCH v4 02/10] clone: write detached HEAD in bare repositories Nguyễn Thái Ngọc Duy
2012-01-13 7:21 ` [PATCH v4 03/10] clone: factor out checkout code Nguyễn Thái Ngọc Duy
2012-01-13 7:21 ` [PATCH v4 04/10] clone: factor out HEAD update code Nguyễn Thái Ngọc Duy
2012-01-13 7:21 ` [PATCH v4 05/10] clone: factor out remote ref writing Nguyễn Thái Ngọc Duy
2012-01-13 7:21 ` [PATCH v4 06/10] clone: delay cloning until after remote HEAD checking Nguyễn Thái Ngọc Duy
2012-01-13 7:21 ` [PATCH v4 07/10] clone: --branch=<branch> always means refs/heads/<branch> Nguyễn Thái Ngọc Duy
2012-01-13 7:22 ` [PATCH v4 08/10] clone: refuse to clone if --branch points to bogus ref Nguyễn Thái Ngọc Duy
2012-01-13 7:22 ` [PATCH v4 09/10] clone: allow --branch to take a tag Nguyễn Thái Ngọc Duy
2012-01-13 7:22 ` [PATCH v4 10/10] clone: print advice on checking out detached HEAD Nguyễn Thái Ngọc Duy
2012-01-10 9:56 ` [PATCH v3 01/10] t5601: add missing && cascade Nguyễn Thái Ngọc Duy
2012-01-10 9:56 ` [PATCH v3 02/10] clone: write detached HEAD in bare repositories Nguyễn Thái Ngọc Duy
2012-01-10 9:57 ` [PATCH v3 03/10] clone: factor out checkout code Nguyễn Thái Ngọc Duy
2012-01-10 9:57 ` [PATCH v3 04/10] clone: factor out HEAD update code Nguyễn Thái Ngọc Duy
2012-01-10 9:57 ` [PATCH v3 05/10] clone: factor out remote ref writing Nguyễn Thái Ngọc Duy
2012-01-10 9:57 ` Nguyễn Thái Ngọc Duy [this message]
2012-01-11 19:36 ` [PATCH v3 06/10] clone: delay cloning until after remote HEAD checking Junio C Hamano
2012-01-12 1:27 ` Nguyen Thai Ngoc Duy
2012-01-24 0:15 ` Junio C Hamano
2012-01-24 0:34 ` Junio C Hamano
2012-01-24 0:39 ` Junio C Hamano
2012-01-24 7:01 ` Nguyen Thai Ngoc Duy
2012-01-10 9:57 ` [PATCH v3 07/10] clone: --branch=<branch> always means refs/heads/<branch> Nguyễn Thái Ngọc Duy
2012-01-11 20:01 ` Junio C Hamano
2012-01-12 3:00 ` Nguyen Thai Ngoc Duy
2012-01-10 9:57 ` [PATCH v3 08/10] clone: refuse to clone if --branch points to bogus ref Nguyễn Thái Ngọc Duy
2012-01-10 9:57 ` [PATCH v3 09/10] clone: allow --branch to take a tag Nguyễn Thái Ngọc Duy
2012-01-11 23:57 ` Junio C Hamano
2012-01-10 9:57 ` [PATCH v3 10/10] clone: print advice on checking out detached HEAD Nguyễn Thái Ngọc Duy
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