[RFC PATCH v4 14/26] Add stateless RPC options to upload-pack, receive-pack
- From
Shawn O. Pearce <spearce@spearce.org>
- Date
- Oct 29, 2009, 00:00 UTC
- Message-ID
- <1256774448-7625-15-git-send-email-spearce@spearce.org>
- In-Reply-To
- <1256774448-7625-1-git-send-email-spearce@spearce.org>
When --stateless-rpc is passed as a command line parameter to upload-pack or receive-pack the programs now assume they may perform only a single read-write cycle with stdin and stdout. This fits with the HTTP POST request processing model where a program may read the request, write a response, and must exit.
When --advertise-refs is passed as a command line parameter only the initial ref advertisement is output, and the program exits immediately. This fits with the HTTP GET request model, where no request content is received but a response must be produced.
HTTP headers and/or environment are not processed here, but instead are assumed to be handled by the program invoking either service backend.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org> --- builtin-receive-pack.c | 26 ++++++++++++++++++++------ upload-pack.c | 40 ++++++++++++++++++++++++++++++++++++---- 2 files changed, 56 insertions(+), 10 deletions(-)
diff --git a/builtin-receive-pack.c b/builtin-receive-pack.c index b771fe9..70ff8c5 100644 --- a/builtin-receive-pack.c +++ b/builtin-receive-pack.c @@ -615,6 +615,8 @@ static void add_alternate_refs(void) int cmd_receive_pack(int argc, const char **argv, const char *prefix) { + int advertise_refs = 0; + int stateless_rpc = 0; int i; char *dir = NULL; @@ -623,7 +625,15 @@ int cmd_receive_pack(int argc, const char **argv, const char *prefix) const char *arg = *argv++; if (*arg == '-') { - /* Do flag handling here */ + if (!strcmp(arg, "--advertise-refs")) { + advertise_refs = 1; + continue; + } + if (!strcmp(arg, "--stateless-rpc")) { + stateless_rpc = 1; + continue; + } + usage(receive_pack_usage); } if (dir) @@ -652,12 +662,16 @@ int cmd_receive_pack(int argc, const char **argv, const char *prefix) " report-status delete-refs ofs-delta " : " report-status delete-refs "; - add_alternate_refs(); - write_head_info(); - clear_extra_refs(); + if (advertise_refs || !stateless_rpc) { + add_alternate_refs(); + write_head_info(); + clear_extra_refs(); - /* EOF */ - packet_flush(1); + /* EOF */ + packet_flush(1); + } + if (advertise_refs) + return 0; read_head_info(); if (commands) { diff --git a/upload-pack.c b/upload-pack.c index f1dc3a3..70badcf 100644 --- a/upload-pack.c +++ b/upload-pack.c @@ -39,6 +39,8 @@ static unsigned int timeout; */ static int use_sideband; static int debug_fd; +static int advertise_refs; +static int stateless_rpc; static void reset_timeout(void) { @@ -509,6 +511,8 @@ static int get_common_commits(void) if (!len) { if (have_obj.nr == 0 || multi_ack) packet_write(1, "NAK\n"); + if (stateless_rpc) + exit(0); continue; } strip(line, len); @@ -710,12 +714,32 @@ static int send_ref(const char *refname, const unsigned char *sha1, int flag, vo return 0; } +static int mark_our_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data) +{ + struct object *o = parse_object(sha1); + if (!o) + die("git upload-pack: cannot find object %s:", sha1_to_hex(sha1)); + if (!(o->flags & OUR_REF)) { + o->flags |= OUR_REF; + nr_our_refs++; + } + return 0; +} + static void upload_pack(void) { - reset_timeout(); - head_ref(send_ref, NULL); - for_each_ref(send_ref, NULL); - packet_flush(1); + if (advertise_refs || !stateless_rpc) { + reset_timeout(); + head_ref(send_ref, NULL); + for_each_ref(send_ref, NULL); + packet_flush(1); + } else { + head_ref(mark_our_ref, NULL); + for_each_ref(mark_our_ref, NULL); + } + if (advertise_refs) + return; + receive_needs(); if (want_obj.nr) { get_common_commits(); @@ -737,6 +761,14 @@ int main(int argc, char **argv) if (arg[0] != '-') break; + if (!strcmp(arg, "--advertise-refs")) { + advertise_refs = 1; + continue; + } + if (!strcmp(arg, "--stateless-rpc")) { + stateless_rpc = 1; + continue; + } if (!strcmp(arg, "--strict")) { strict = 1; continue;
-- 1.6.5.2.181.gd6f41