Merge branch 'jt/avoid-ls-refs-with-http'

The http transport lacked some optimization the native transports
learned to avoid unnecessary ref advertisement, which has been
corrected.

* jt/avoid-ls-refs-with-http:
  transport: teach all vtables to allow fetch first
  transport-helper: skip ls-refs if unnecessary

diff --git a/t/t5607-clone-bundle.sh b/t/t5607-clone-bundle.sh
index 2a0fb15cf175251df0a140aa4f5c56fd7885292d..b7a3fdf02dfb4096133d1aca8de412d907ea921b 100755 (executable)
--- a/t/t5607-clone-bundle.sh
+++ b/t/t5607-clone-bundle.sh
@@ -83,4 +83,15 @@ test_expect_success 'failed bundle creation does not leave cruft' '
        test_path_is_missing fail.bundle.lock
 '
 
+test_expect_success 'fetch SHA-1 from bundle' '
+       test_create_repo foo &&
+       test_commit -C foo x &&
+       git -C foo bundle create tip.bundle -1 master &&
+       git -C foo rev-parse HEAD >hash &&
+
+       # Exercise to ensure that fetching a SHA-1 from a bundle works with no
+       # errors
+       git fetch --no-tags foo/tip.bundle "$(cat hash)"
+'
+
 test_done

diff --git a/t/t5702-protocol-v2.sh b/t/t5702-protocol-v2.sh
index fbddd0aea9340827899c766c7235226f5a4823a6..ae9175cedfb2b5e51acc92ec797014e6459e3c9a 100755 (executable)
--- a/t/t5702-protocol-v2.sh
+++ b/t/t5702-protocol-v2.sh
@@ -631,6 +631,19 @@ test_expect_success 'fetch with http:// using protocol v2' '
        grep "git< version 2" log
 '
 
+test_expect_success 'fetch with http:// by hash without tag following with protocol v2 does not list refs' '
+       test_when_finished "rm -f log" &&
+
+       test_commit -C "$HTTPD_DOCUMENT_ROOT_PATH/http_parent" two_a &&
+       git -C "$HTTPD_DOCUMENT_ROOT_PATH/http_parent" rev-parse two_a >two_a_hash &&
+
+       GIT_TRACE_PACKET="$(pwd)/log" git -C http_child -c protocol.version=2 \
+               fetch --no-tags origin $(cat two_a_hash) &&
+
+       grep "fetch< version 2" log &&
+       ! grep "fetch> command=ls-refs" log
+'
+
 test_expect_success 'fetch from namespaced repo respects namespaces' '
        test_when_finished "rm -f log" &&
 

diff --git a/transport-helper.c b/transport-helper.c
index 31691117725acacfb0069ce002eec844bc2ac52a..9e1279b928bb3eadf110e43c091b4a3ba789fe3b 100644 (file)
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -33,6 +33,16 @@ struct helper_data {
                check_connectivity : 1,
                no_disconnect_req : 1,
                no_private_update : 1;
+
+       /*
+        * As an optimization, the transport code may invoke fetch before
+        * get_refs_list. If this happens, and if the transport helper doesn't
+        * support connect or stateless_connect, we need to invoke
+        * get_refs_list ourselves if we haven't already done so. Keep track of
+        * whether we have invoked get_refs_list.
+        */
+       unsigned get_refs_list_called : 1;
+
        char *export_marks;
        char *import_marks;
        /* These go from remote name (as in "list") to private name */
@@ -652,17 +662,25 @@ static int connect_helper(struct transport *transport, const char *name,
        return 0;
 }
 
+static struct ref *get_refs_list_using_list(struct transport *transport,
+                                           int for_push);
+
 static int fetch(struct transport *transport,
                 int nr_heads, struct ref **to_fetch)
 {
        struct helper_data *data = transport->data;
        int i, count;
 
+       get_helper(transport);
+
        if (process_connect(transport, 0)) {
                do_take_over(transport);
                return transport->vtable->fetch(transport, nr_heads, to_fetch);
        }
 
+       if (!data->get_refs_list_called)
+               get_refs_list_using_list(transport, 0);
+
        count = 0;
        for (i = 0; i < nr_heads; i++)
                if (!(to_fetch[i]->status & REF_STATUS_UPTODATE))
@@ -1054,6 +1072,19 @@ static int has_attribute(const char *attrs, const char *attr)
 
 static struct ref *get_refs_list(struct transport *transport, int for_push,
                                 const struct argv_array *ref_prefixes)
+{
+       get_helper(transport);
+
+       if (process_connect(transport, for_push)) {
+               do_take_over(transport);
+               return transport->vtable->get_refs_list(transport, for_push, ref_prefixes);
+       }
+
+       return get_refs_list_using_list(transport, for_push);
+}
+
+static struct ref *get_refs_list_using_list(struct transport *transport,
+                                           int for_push)
 {
        struct helper_data *data = transport->data;
        struct child_process *helper;
@@ -1062,13 +1093,9 @@ static struct ref *get_refs_list(struct transport *transport, int for_push,
        struct ref *posn;
        struct strbuf buf = STRBUF_INIT;
 
+       data->get_refs_list_called = 1;
        helper = get_helper(transport);
 
-       if (process_connect(transport, for_push)) {
-               do_take_over(transport);
-               return transport->vtable->get_refs_list(transport, for_push, ref_prefixes);
-       }
-
        if (data->push && for_push)
                write_str_in_full(helper->in, "list for-push\n");
        else
@@ -1115,7 +1142,6 @@ static struct ref *get_refs_list(struct transport *transport, int for_push,
 }
 
 static struct transport_vtable vtable = {
-       0,
        set_helper_option,
        get_refs_list,
        fetch,

diff --git a/transport-internal.h b/transport-internal.h
index 004bee5e368f24963d925af997aec051189e1acf..1cde6258a73bcf8582b0746d1c44a23b30115dc9 100644 (file)
--- a/transport-internal.h
+++ b/transport-internal.h
@@ -6,12 +6,6 @@ struct transport;
 struct argv_array;
 
 struct transport_vtable {
-       /**
-        * This transport supports the fetch() function being called
-        * without get_refs_list() first being called.
-        */
-       unsigned fetch_without_list : 1;
-
        /**
         * Returns 0 if successful, positive if the option is not
         * recognized or is inapplicable, and negative if the option

diff --git a/transport.c b/transport.c
index 6324cfc482c2ca48257229eeaf232dae3dbb053b..ae558af94414bfba0592c0915a0cd552438c4f1f 100644 (file)
--- a/transport.c
+++ b/transport.c
@@ -122,6 +122,7 @@ static void set_upstreams(struct transport *transport, struct ref *refs,
 struct bundle_transport_data {
        int fd;
        struct bundle_header header;
+       unsigned get_refs_from_bundle_called : 1;
 };
 
 static struct ref *get_refs_from_bundle(struct transport *transport,
@@ -135,6 +136,8 @@ static struct ref *get_refs_from_bundle(struct transport *transport,
        if (for_push)
                return NULL;
 
+       data->get_refs_from_bundle_called = 1;
+
        if (data->fd > 0)
                close(data->fd);
        data->fd = read_bundle_header(transport->url, &data->header);
@@ -154,6 +157,9 @@ static int fetch_refs_from_bundle(struct transport *transport,
                               int nr_heads, struct ref **to_fetch)
 {
        struct bundle_transport_data *data = transport->data;
+
+       if (!data->get_refs_from_bundle_called)
+               get_refs_from_bundle(transport, 0, NULL);
        return unbundle(the_repository, &data->header, data->fd,
                        transport->progress ? BUNDLE_VERBOSE : 0);
 }
@@ -743,7 +749,6 @@ static int disconnect_git(struct transport *transport)
 }
 
 static struct transport_vtable taken_over_vtable = {
-       1,
        NULL,
        get_refs_via_connect,
        fetch_refs_via_pack,
@@ -893,7 +898,6 @@ void transport_check_allowed(const char *type)
 }
 
 static struct transport_vtable bundle_vtable = {
-       0,
        NULL,
        get_refs_from_bundle,
        fetch_refs_from_bundle,
@@ -903,7 +907,6 @@ static struct transport_vtable bundle_vtable = {
 };
 
 static struct transport_vtable builtin_smart_vtable = {
-       1,
        NULL,
        get_refs_via_connect,
        fetch_refs_via_pack,
@@ -1286,15 +1289,6 @@ int transport_fetch_refs(struct transport *transport, struct ref *refs)
        struct ref **heads = NULL;
        struct ref *rm;
 
-       if (!transport->vtable->fetch_without_list)
-               /*
-                * Some transports (e.g. the built-in bundle transport and the
-                * transport helper interface) do not work when fetching is
-                * done immediately after transport creation. List the remote
-                * refs anyway (if not already listed) as a workaround.
-                */
-               transport_get_remote_refs(transport, NULL);
-
        for (rm = refs; rm; rm = rm->next) {
                nr_refs++;
                if (rm->peer_ref &&