Convert the 'struct transport' virtual function 'get_refs_list()' to
optionally take an argv_array of ref prefixes. When communicating with
a server using protocol v2 these ref prefixes can be sent when
requesting a listing of their refs allowing the server to filter the
refs it sends based on the sent prefixes. This list will be ignored
when not using protocol v2.
Signed-off-by: Brandon Williams <bmwill@xxxxxxxxxx>
---
transport-helper.c | 5 +++--
transport-internal.h | 11 ++++++++++-
transport.c | 18 +++++++++++-------
3 files changed, 24 insertions(+), 10 deletions(-)
diff --git a/transport-helper.c b/transport-helper.c
index 5080150231..8774ab3013 100644
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -1026,7 +1026,8 @@ static int has_attribute(const char *attrs, const char *attr) {
}
}
-static struct ref *get_refs_list(struct transport *transport, int for_push)
+static struct ref *get_refs_list(struct transport *transport, int for_push,
+ const struct argv_array *ref_prefixes)
{
struct helper_data *data = transport->data;
struct child_process *helper;
@@ -1039,7 +1040,7 @@ static struct ref *get_refs_list(struct transport *transport, int for_push)
if (process_connect(transport, for_push)) {
do_take_over(transport);
- return transport->vtable->get_refs_list(transport, for_push);
+ return transport->vtable->get_refs_list(transport, for_push, ref_prefixes);
}
if (data->push && for_push)
diff --git a/transport-internal.h b/transport-internal.h
index 3c1a29d727..1cde6258a7 100644
--- a/transport-internal.h
+++ b/transport-internal.h
@@ -3,6 +3,7 @@
struct ref;
struct transport;
+struct argv_array;
struct transport_vtable {
/**
@@ -17,11 +18,19 @@ struct transport_vtable {
* the transport to try to share connections, for_push is a
* hint as to whether the ultimate operation is a push or a fetch.
*
+ * If communicating using protocol v2 a list of prefixes can be
+ * provided to be sent to the server to enable it to limit the ref
+ * advertisement. Since ref filtering is done on the server's end, and
+ * only when using protocol v2, this list will be ignored when not
+ * using protocol v2 meaning this function can return refs which don't
+ * match the provided ref_prefixes.
+ *
* If the transport is able to determine the remote hash for
* the ref without a huge amount of effort, it should store it
* in the ref's old_sha1 field; otherwise it should be all 0.
**/
- struct ref *(*get_refs_list)(struct transport *transport, int for_push);
+ struct ref *(*get_refs_list)(struct transport *transport, int for_push,
+ const struct argv_array *ref_prefixes);
/**
* Fetch the objects for the given refs. Note that this gets
diff --git a/transport.c b/transport.c
index ffc6b2614f..2e68010dd0 100644
--- a/transport.c
+++ b/transport.c
@@ -72,7 +72,9 @@ struct bundle_transport_data {
struct bundle_header header;
};
-static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
+static struct ref *get_refs_from_bundle(struct transport *transport,
+ int for_push,
+ const struct argv_array *ref_prefixes)
{
struct bundle_transport_data *data = transport->data;
struct ref *result = NULL;
@@ -189,7 +191,8 @@ static int connect_setup(struct transport *transport, int for_push)
return 0;
}
-static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
+static struct ref *get_refs_via_connect(struct transport *transport, int for_push,
+ const struct argv_array *ref_prefixes)
{
struct git_transport_data *data = transport->data;
struct ref *refs = NULL;
@@ -204,7 +207,8 @@ static struct ref *get_refs_via_connect(struct transport *transport, int for_pus
data->version = discover_version(&reader);
switch (data->version) {
case protocol_v2:
- get_remote_refs(data->fd[1], &reader, &refs, for_push, NULL);
+ get_remote_refs(data->fd[1], &reader, &refs, for_push,
+ ref_prefixes);
break;
case protocol_v1:
case protocol_v0:
@@ -250,7 +254,7 @@ static int fetch_refs_via_pack(struct transport *transport,
args.update_shallow = data->options.update_shallow;
if (!data->got_remote_heads)
- refs_tmp = get_refs_via_connect(transport, 0);
+ refs_tmp = get_refs_via_connect(transport, 0, NULL);
switch (data->version) {
case protocol_v2:
@@ -568,7 +572,7 @@ static int git_transport_push(struct transport *transport, struct ref *remote_re
int ret = 0;
if (!data->got_remote_heads)
- get_refs_via_connect(transport, 1);
+ get_refs_via_connect(transport, 1, NULL);
memset(&args, 0, sizeof(args));
args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
@@ -1028,7 +1032,7 @@ int transport_push(struct transport *transport,
if (check_push_refs(local_refs, refspec_nr, refspec) < 0)
return -1;
- remote_refs = transport->vtable->get_refs_list(transport, 1);
+ remote_refs = transport->vtable->get_refs_list(transport, 1, NULL);
if (flags & TRANSPORT_PUSH_ALL)
match_flags |= MATCH_REFS_ALL;
@@ -1137,7 +1141,7 @@ int transport_push(struct transport *transport,
const struct ref *transport_get_remote_refs(struct transport *transport)
{
if (!transport->got_remote_refs) {
- transport->remote_refs = transport->vtable->get_refs_list(transport, 0);
+ transport->remote_refs = transport->vtable->get_refs_list(transport, 0, NULL);
transport->got_remote_refs = 1;
}
--
2.16.2.804.g6dcf76e118-goog
