diff options
| -rw-r--r-- | Documentation/technical/protocol-v2.txt | 9 | ||||
| -rw-r--r-- | fetch-pack.c | 23 | ||||
| -rwxr-xr-x | t/t5702-protocol-v2.sh | 98 | ||||
| -rw-r--r-- | upload-pack.c | 15 |
4 files changed, 140 insertions, 5 deletions
diff --git a/Documentation/technical/protocol-v2.txt b/Documentation/technical/protocol-v2.txt index 136179d7d8..38d24fd2bc 100644 --- a/Documentation/technical/protocol-v2.txt +++ b/Documentation/technical/protocol-v2.txt @@ -290,6 +290,15 @@ included in the clients request as well as the potential addition of the Cannot be used with "deepen", but can be used with "deepen-since". +If the 'filter' feature is advertised, the following argument can be +included in the client's request: + + filter <filter-spec> + Request that various objects from the packfile be omitted + using one of several filtering techniques. These are intended + for use with partial clone and partial fetch operations. See + `rev-list` for possible "filter-spec" values. + The response of `fetch` is broken into a number of sections separated by delimiter packets (0001), with each section beginning with its section header. diff --git a/fetch-pack.c b/fetch-pack.c index f93723fec4..3ed40aa464 100644 --- a/fetch-pack.c +++ b/fetch-pack.c @@ -1191,14 +1191,29 @@ static int send_fetch_request(int fd_out, const struct fetch_pack_args *args, else if (is_repository_shallow() || args->deepen) die(_("Server does not support shallow requests")); + /* Add filter */ + if (server_supports_feature("fetch", "filter", 0) && + args->filter_options.choice) { + print_verbose(args, _("Server supports filter")); + packet_buf_write(&req_buf, "filter %s", + args->filter_options.filter_spec); + } else if (args->filter_options.choice) { + warning("filtering not recognized by server, ignoring"); + } + /* add wants */ add_wants(wants, &req_buf); - /* Add all of the common commits we've found in previous rounds */ - add_common(&req_buf, common); + if (args->no_dependents) { + packet_buf_write(&req_buf, "done"); + ret = 1; + } else { + /* Add all of the common commits we've found in previous rounds */ + add_common(&req_buf, common); - /* Add initial haves */ - ret = add_haves(&req_buf, haves_to_send, in_vain); + /* Add initial haves */ + ret = add_haves(&req_buf, haves_to_send, in_vain); + } /* Send request */ packet_buf_flush(&req_buf); diff --git a/t/t5702-protocol-v2.sh b/t/t5702-protocol-v2.sh index abb15cd6de..25bf046b36 100755 --- a/t/t5702-protocol-v2.sh +++ b/t/t5702-protocol-v2.sh @@ -215,6 +215,104 @@ test_expect_success 'upload-pack respects config using protocol v2' ' test_path_is_file server/.git/hookout ' +test_expect_success 'setup filter tests' ' + rm -rf server client && + git init server && + + # 1 commit to create a file, and 1 commit to modify it + test_commit -C server message1 a.txt && + test_commit -C server message2 a.txt && + git -C server config protocol.version 2 && + git -C server config uploadpack.allowfilter 1 && + git -C server config uploadpack.allowanysha1inwant 1 && + git -C server config protocol.version 2 +' + +test_expect_success 'partial clone' ' + GIT_TRACE_PACKET="$(pwd)/trace" git -c protocol.version=2 \ + clone --filter=blob:none "file://$(pwd)/server" client && + grep "version 2" trace && + + # Ensure that the old version of the file is missing + git -C client rev-list master --quiet --objects --missing=print \ + >observed.oids && + grep "$(git -C server rev-parse message1:a.txt)" observed.oids && + + # Ensure that client passes fsck + git -C client fsck +' + +test_expect_success 'dynamically fetch missing object' ' + rm "$(pwd)/trace" && + GIT_TRACE_PACKET="$(pwd)/trace" git -C client -c protocol.version=2 \ + cat-file -p $(git -C server rev-parse message1:a.txt) && + grep "version 2" trace +' + +test_expect_success 'partial fetch' ' + rm -rf client "$(pwd)/trace" && + git init client && + SERVER="file://$(pwd)/server" && + test_config -C client extensions.partialClone "$SERVER" && + + GIT_TRACE_PACKET="$(pwd)/trace" git -C client -c protocol.version=2 \ + fetch --filter=blob:none "$SERVER" master:refs/heads/other && + grep "version 2" trace && + + # Ensure that the old version of the file is missing + git -C client rev-list other --quiet --objects --missing=print \ + >observed.oids && + grep "$(git -C server rev-parse message1:a.txt)" observed.oids && + + # Ensure that client passes fsck + git -C client fsck +' + +test_expect_success 'do not advertise filter if not configured to do so' ' + SERVER="file://$(pwd)/server" && + + rm "$(pwd)/trace" && + git -C server config uploadpack.allowfilter 1 && + GIT_TRACE_PACKET="$(pwd)/trace" git -c protocol.version=2 \ + ls-remote "$SERVER" && + grep "fetch=.*filter" trace && + + rm "$(pwd)/trace" && + git -C server config uploadpack.allowfilter 0 && + GIT_TRACE_PACKET="$(pwd)/trace" git -c protocol.version=2 \ + ls-remote "$SERVER" && + grep "fetch=" trace >fetch_capabilities && + ! grep filter fetch_capabilities +' + +test_expect_success 'partial clone warns if filter is not advertised' ' + rm -rf client && + git -C server config uploadpack.allowfilter 0 && + git -c protocol.version=2 \ + clone --filter=blob:none "file://$(pwd)/server" client 2>err && + test_i18ngrep "filtering not recognized by server, ignoring" err +' + +test_expect_success 'even with handcrafted request, filter does not work if not advertised' ' + git -C server config uploadpack.allowfilter 0 && + + # Custom request that tries to filter even though it is not advertised. + test-pkt-line pack >in <<-EOF && + command=fetch + 0001 + want $(git -C server rev-parse master) + filter blob:none + 0000 + EOF + + test_must_fail git -C server serve --stateless-rpc <in >/dev/null 2>err && + grep "unexpected line: .filter blob:none." err && + + # Exercise to ensure that if advertised, filter works + git -C server config uploadpack.allowfilter 1 && + git -C server serve --stateless-rpc <in >/dev/null +' + # Test protocol v2 with 'http://' transport # . "$TEST_DIRECTORY"/lib-httpd.sh diff --git a/upload-pack.c b/upload-pack.c index 113edd32d4..82c16cae32 100644 --- a/upload-pack.c +++ b/upload-pack.c @@ -1205,6 +1205,7 @@ static void process_args(struct packet_reader *request, { while (packet_reader_read(request) != PACKET_READ_FLUSH) { const char *arg = request->line; + const char *p; /* process want */ if (parse_want(arg)) @@ -1251,6 +1252,11 @@ static void process_args(struct packet_reader *request, continue; } + if (allow_filter && skip_prefix(arg, "filter ", &p)) { + parse_list_objects_filter(&filter_options, p); + continue; + } + /* ignore unknown lines maybe? */ die("unexpected line: '%s'", arg); } @@ -1430,7 +1436,14 @@ int upload_pack_v2(struct repository *r, struct argv_array *keys, int upload_pack_advertise(struct repository *r, struct strbuf *value) { - if (value) + if (value) { + int allow_filter_value; strbuf_addstr(value, "shallow"); + if (!repo_config_get_bool(the_repository, + "uploadpack.allowfilter", + &allow_filter_value) && + allow_filter_value) + strbuf_addstr(value, " filter"); + } return 1; } |