clone: send server options when using protocol v2

Commit 5e3548ef16 ("fetch: send server options when using protocol v2",
2018-04-24) taught "fetch" the ability to send server options when using
protocol v2, but not "clone". This ability is triggered by "-o" or
"--server-option".

Teach "clone" the same ability, except that because "clone" already
has "-o" for another parameter, teach "clone" only to receive
"--server-option".

Explain in the documentation, both for clone and for fetch, that server
handling of server options are server-specific. This is similar to
receive-pack's handling of push options - currently, they are just sent
to hooks to interpret as they see fit.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/fetch-options.txt b/Documentation/fetch-options.txt
index fa0a3151b3f7e96ee61e65669e057e48ee053aae..91c47752ecdc9c77f660ec1b67bb9b1f393c3cb7 100644 (file)
--- a/Documentation/fetch-options.txt
+++ b/Documentation/fetch-options.txt
@@ -216,7 +216,8 @@ endif::git-pull[]
 --server-option=<option>::
        Transmit the given string to the server when communicating using
        protocol version 2.  The given string must not contain a NUL or LF
-       character.
+       character.  The server's handling of server options, including
+       unknown ones, is server-specific.
        When multiple `--server-option=<option>` are given, they are all
        sent to the other side in the order listed on the command line.
 

diff --git a/Documentation/git-clone.txt b/Documentation/git-clone.txt
index 2fd12524f95afef9c688d3402cd2a8b6d2d98c2e..a0f14b51f2654ced2fb7f76078d95050d2730a7d 100644 (file)
--- a/Documentation/git-clone.txt
+++ b/Documentation/git-clone.txt
@@ -131,6 +131,14 @@ objects from the source repository into a pack in the cloned repository.
        is specified. This flag forces progress status even if the
        standard error stream is not directed to a terminal.
 
+--server-option=<option>::
+       Transmit the given string to the server when communicating using
+       protocol version 2.  The given string must not contain a NUL or LF
+       character.  The server's handling of server options, including
+       unknown ones, is server-specific.
+       When multiple `--server-option=<option>` are given, they are all
+       sent to the other side in the order listed on the command line.
+
 --no-checkout::
 -n::
        No checkout of HEAD is performed after the clone is complete.

diff --git a/builtin/clone.c b/builtin/clone.c
index 50bde9961809b1d55c74fb6d3cbfbf5a86ddf5c7..31a47d190a96a4bb7ea47eae28434456226cd8d2 100644 (file)
--- a/builtin/clone.c
+++ b/builtin/clone.c
@@ -66,6 +66,7 @@ static int option_dissociate;
 static int max_jobs = -1;
 static struct string_list option_recurse_submodules = STRING_LIST_INIT_NODUP;
 static struct list_objects_filter_options filter_options;
+static struct string_list server_options = STRING_LIST_INIT_NODUP;
 
 static int recurse_submodules_cb(const struct option *opt,
                                 const char *arg, int unset)
@@ -137,6 +138,8 @@ static struct option builtin_clone_options[] = {
                   N_("separate git dir from working tree")),
        OPT_STRING_LIST('c', "config", &option_config, N_("key=value"),
                        N_("set config inside the new repository")),
+       OPT_STRING_LIST(0, "server-option", &server_options,
+                       N_("server-specific"), N_("option to transmit")),
        OPT_SET_INT('4', "ipv4", &family, N_("use IPv4 addresses only"),
                        TRANSPORT_FAMILY_IPV4),
        OPT_SET_INT('6', "ipv6", &family, N_("use IPv6 addresses only"),
@@ -1136,6 +1139,9 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
                transport_set_option(transport, TRANS_OPT_UPLOADPACK,
                                     option_upload_pack);
 
+       if (server_options.nr)
+               transport->server_options = &server_options;
+
        if (filter_options.choice) {
                struct strbuf expanded_filter_spec = STRBUF_INIT;
                expand_list_objects_filter_spec(&filter_options,

diff --git a/t/t5702-protocol-v2.sh b/t/t5702-protocol-v2.sh
index f8912211e0ae56f4e8924016fb70a7bbf237016f..9b048f6c8bc82852f52bf03baf33f174d99f23b7 100755 (executable)
--- a/t/t5702-protocol-v2.sh
+++ b/t/t5702-protocol-v2.sh
@@ -270,6 +270,28 @@ test_expect_success 'warn if using server-option with fetch with legacy protocol
        test_i18ngrep "server options require protocol version 2 or later" err
 '
 
+test_expect_success 'server-options are sent when cloning' '
+       test_when_finished "rm -rf log myclone" &&
+
+       GIT_TRACE_PACKET="$(pwd)/log" git -c protocol.version=2 \
+               clone --server-option=hello --server-option=world \
+               "file://$(pwd)/file_parent" myclone &&
+
+       grep "server-option=hello" log &&
+       grep "server-option=world" log
+'
+
+test_expect_success 'warn if using server-option with clone with legacy protocol' '
+       test_when_finished "rm -rf myclone" &&
+
+       test_must_fail env GIT_TEST_PROTOCOL_VERSION=0 git -c protocol.version=0 \
+               clone --server-option=hello --server-option=world \
+               "file://$(pwd)/file_parent" myclone 2>err &&
+
+       test_i18ngrep "see protocol.version in" err &&
+       test_i18ngrep "server options require protocol version 2 or later" err
+'
+
 test_expect_success 'upload-pack respects config using protocol v2' '
        git init server &&
        write_script server/.git/hook <<-\EOF &&