This shares the connection between getting the remote ref list and
getting objects in the first batch. (A second connection is still used
to follow tags)
---
As far as I can tell, this works and is suitable for pu. But it may well
have subtle issues, and may nearly totally break git-fetch-pack (as an
independant program). FWIW, I didn't get any feedback other than general
encouragement last time I tried.
builtin-fetch-pack.c | 74 ++++++++++++++++++++++++++-----------------------
fetch-pack.h | 2 +
transport.c | 41 +++++++++++++++++++--------
3 files changed, 70 insertions(+), 47 deletions(-)
diff --git a/builtin-fetch-pack.c b/builtin-fetch-pack.c
index bb1742f..688a8dc 100644
--- a/builtin-fetch-pack.c
+++ b/builtin-fetch-pack.c
@@ -7,6 +7,7 @@
#include "pack.h"
#include "sideband.h"
#include "fetch-pack.h"
+#include "remote.h"
#include "run-command.h"
static int transfer_unpack_limit = -1;
@@ -558,14 +559,14 @@ static int get_pack(int xd[2], char **pack_lockfile)
}
static struct ref *do_fetch_pack(int fd[2],
+ const struct ref *orig_ref,
int nr_match,
char **match,
char **pack_lockfile)
{
- struct ref *ref;
+ struct ref *ref = copy_ref_list(orig_ref);
unsigned char sha1[20];
- get_remote_heads(fd[0], &ref, 0, NULL, 0);
if (is_repository_shallow() && !server_supports("shallow"))
die("Server does not support shallow clients");
if (server_supports("multi_ack")) {
@@ -583,10 +584,6 @@ static struct ref *do_fetch_pack(int fd[2],
fprintf(stderr, "Server supports side-band\n");
use_sideband = 1;
}
- if (!ref) {
- packet_flush(fd[1]);
- die("no matching remote head");
- }
if (everything_local(&ref, nr_match, match)) {
packet_flush(fd[1]);
goto all_done;
@@ -660,7 +657,7 @@ static void fetch_pack_setup(void)
int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
{
int i, ret, nr_heads;
- struct ref *ref;
+ struct ref *ref = NULL;
char *dest = NULL, **heads;
nr_heads = 0;
@@ -716,9 +713,34 @@ int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
if (!dest)
usage(fetch_pack_usage);
- ref = fetch_pack(&args, dest, nr_heads, heads, NULL);
+ int fd[2];
+ struct child_process *conn = git_connect(fd, (char *)dest, args.uploadpack,
+ args.verbose ? CONNECT_VERBOSE : 0);
+ if (conn) {
+ get_remote_heads(fd[0], &ref, 0, NULL, 0);
+
+ ref = fetch_pack(&args, fd, conn, ref, dest, nr_heads, heads, NULL);
+ close(fd[0]);
+ close(fd[1]);
+ if (finish_connect(conn))
+ ref = NULL;
+ } else {
+ ref = NULL;
+ }
ret = !ref;
+ if (!ret && nr_heads) {
+ /* If the heads to pull were given, we should have
+ * consumed all of them by matching the remote.
+ * Otherwise, 'git-fetch remote no-such-ref' would
+ * silently succeed without issuing an error.
+ */
+ for (i = 0; i < nr_heads; i++)
+ if (heads[i] && heads[i][0]) {
+ error("no such remote ref %s", heads[i]);
+ ret = 1;
+ }
+ }
while (ref) {
printf("%s %s\n",
sha1_to_hex(ref->old_sha1), ref->name);
@@ -729,16 +751,15 @@ int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
}
struct ref *fetch_pack(struct fetch_pack_args *my_args,
+ int fd[], pid_t pid,
+ const struct ref *ref,
const char *dest,
int nr_heads,
char **heads,
char **pack_lockfile)
{
- int i, ret;
- int fd[2];
- struct child_process *conn;
- struct ref *ref;
struct stat st;
+ struct ref *ref_cpy;
fetch_pack_setup();
memcpy(&args, my_args, sizeof(args));
@@ -747,29 +768,15 @@ struct ref *fetch_pack(struct fetch_pack_args *my_args,
st.st_mtime = 0;
}
- conn = git_connect(fd, (char *)dest, args.uploadpack,
- args.verbose ? CONNECT_VERBOSE : 0);
if (heads && nr_heads)
nr_heads = remove_duplicates(nr_heads, heads);
- ref = do_fetch_pack(fd, nr_heads, heads, pack_lockfile);
- close(fd[0]);
- close(fd[1]);
- ret = finish_connect(conn);
-
- if (!ret && nr_heads) {
- /* If the heads to pull were given, we should have
- * consumed all of them by matching the remote.
- * Otherwise, 'git-fetch remote no-such-ref' would
- * silently succeed without issuing an error.
- */
- for (i = 0; i < nr_heads; i++)
- if (heads[i] && heads[i][0]) {
- error("no such remote ref %s", heads[i]);
- ret = 1;
- }
+ if (!ref) {
+ packet_flush(fd[1]);
+ die("no matching remote head");
}
+ ref_cpy = do_fetch_pack(fd, ref, nr_heads, heads, pack_lockfile);
- if (!ret && args.depth > 0) {
+ if (args.depth > 0) {
struct cache_time mtime;
char *shallow = git_path("shallow");
int fd;
@@ -798,8 +805,5 @@ struct ref *fetch_pack(struct fetch_pack_args *my_args,
}
}
- if (ret)
- ref = NULL;
-
- return ref;
+ return ref_cpy;
}
diff --git a/fetch-pack.h b/fetch-pack.h
index a7888ea..8d35ef6 100644
--- a/fetch-pack.h
+++ b/fetch-pack.h
@@ -16,6 +16,8 @@ struct fetch_pack_args
};
struct ref *fetch_pack(struct fetch_pack_args *args,
+ int fd[], struct child_process *conn,
+ const struct ref *ref,
const char *dest,
int nr_heads,
char **heads,
diff --git a/transport.c b/transport.c
index 83677fc..3cb0115 100644
--- a/transport.c
+++ b/transport.c
@@ -568,6 +568,8 @@ struct git_transport_data {
unsigned thin : 1;
unsigned keep : 1;
int depth;
+ struct child_process *conn;
+ int fd[2];
const char *uploadpack;
const char *receivepack;
};
@@ -598,20 +600,20 @@ static int set_git_option(struct transport *connection,
return 1;
}
+static int connect_setup(struct transport *transport)
+{
+ struct git_transport_data *data = transport->data;
+ data->conn = git_connect(data->fd, transport->url, data->uploadpack, 0);
+ return 0;
+}
+
static struct ref *get_refs_via_connect(struct transport *transport)
{
struct git_transport_data *data = transport->data;
struct ref *refs;
- int fd[2];
- char *dest = xstrdup(transport->url);
- struct child_process *conn = git_connect(fd, dest, data->uploadpack, 0);
- get_remote_heads(fd[0], &refs, 0, NULL, 0);
- packet_flush(fd[1]);
-
- finish_connect(conn);
-
- free(dest);
+ connect_setup(transport);
+ get_remote_heads(data->fd[0], &refs, 0, NULL, 0);
return refs;
}
@@ -622,7 +624,7 @@ static int fetch_refs_via_pack(struct transport *transport,
struct git_transport_data *data = transport->data;
char **heads = xmalloc(nr_heads * sizeof(*heads));
char **origh = xmalloc(nr_heads * sizeof(*origh));
- struct ref *refs;
+ const struct ref *refs;
char *dest = xstrdup(transport->url);
struct fetch_pack_args args;
int i;
@@ -637,13 +639,27 @@ static int fetch_refs_via_pack(struct transport *transport,
for (i = 0; i < nr_heads; i++)
origh[i] = heads[i] = xstrdup(to_fetch[i]->name);
- refs = fetch_pack(&args, dest, nr_heads, heads, &transport->pack_lockfile);
+
+ refs = transport_get_remote_refs(transport);
+ if (!data->conn) {
+ struct ref *refs_tmp;
+ connect_setup(transport);
+ get_remote_heads(data->fd[0], &refs_tmp, 0, NULL, 0);
+ free_refs(refs_tmp);
+ }
+
+ refs = fetch_pack(&args, data->fd, data->conn, transport->remote_refs,
+ dest, nr_heads, heads, &transport->pack_lockfile);
+ close(data->fd[0]);
+ close(data->fd[1]);
+ if (finish_connect(data->conn))
+ refs = NULL;
+ data->conn = NULL;
for (i = 0; i < nr_heads; i++)
free(origh[i]);
free(origh);
free(heads);
- free_refs(refs);
free(dest);
return 0;
}
@@ -725,6 +741,7 @@ struct transport *transport_get(struct remote *remote, const char *url)
ret->disconnect = disconnect_git;
data->thin = 1;
+ data->conn = NULL;
data->uploadpack = "git-upload-pack";
if (remote && remote->uploadpack)
data->uploadpack = remote->uploadpack;
--
1.5.3.5.628.g8e762-dirty
-
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