Get the next rev to send, ignoring the common.
*/
-static const unsigned char* get_rev(void)
+static const unsigned char *get_rev(void)
{
struct commit *commit = NULL;
return commit->object.sha1;
}
+enum ack_type {
+ NAK = 0,
+ ACK,
+ ACK_continue,
+ ACK_common,
+ ACK_ready
+};
+
+static void consume_shallow_list(int fd)
+{
+ if (args.stateless_rpc && args.depth > 0) {
+ /* If we sent a depth we will get back "duplicate"
+ * shallow and unshallow commands every time there
+ * is a block of have lines exchanged.
+ */
+ char line[1000];
+ while (packet_read_line(fd, line, sizeof(line))) {
+ if (!prefixcmp(line, "shallow "))
+ continue;
+ if (!prefixcmp(line, "unshallow "))
+ continue;
+ die("git fetch-pack: expected shallow list");
+ }
+ }
+}
+
+static enum ack_type get_ack(int fd, unsigned char *result_sha1)
+{
+ static char line[1000];
+ int len = packet_read_line(fd, line, sizeof(line));
+
+ if (!len)
+ die("git fetch-pack: expected ACK/NAK, got EOF");
+ if (line[len-1] == '\n')
+ line[--len] = 0;
+ if (!strcmp(line, "NAK"))
+ return NAK;
+ if (!prefixcmp(line, "ACK ")) {
+ if (!get_sha1_hex(line+4, result_sha1)) {
+ if (strstr(line+45, "continue"))
+ return ACK_continue;
+ if (strstr(line+45, "common"))
+ return ACK_common;
+ if (strstr(line+45, "ready"))
+ return ACK_ready;
+ return ACK;
+ }
+ }
+ die("git fetch_pack: expected ACK/NAK, got '%s'", line);
+}
+
+static void send_request(int fd, struct strbuf *buf)
+{
+ if (args.stateless_rpc) {
+ send_sideband(fd, -1, buf->buf, buf->len, LARGE_PACKET_MAX);
+ packet_flush(fd);
+ } else
+ safe_write(fd, buf->buf, buf->len);
+}
+
static int find_common(int fd[2], unsigned char *result_sha1,
struct ref *refs)
{
const unsigned char *sha1;
unsigned in_vain = 0;
int got_continue = 0;
+ struct strbuf req_buf = STRBUF_INIT;
+ size_t state_len = 0;
+ if (args.stateless_rpc && multi_ack == 1)
+ die("--stateless-rpc requires multi_ack_detailed");
if (marked)
for_each_ref(clear_marks, NULL);
marked = 1;
fetching = 0;
for ( ; refs ; refs = refs->next) {
unsigned char *remote = refs->old_sha1;
+ const char *remote_hex;
struct object *o;
/*
continue;
}
- if (!fetching)
- packet_write(fd[1], "want %s%s%s%s%s%s%s%s\n",
- sha1_to_hex(remote),
- (multi_ack ? " multi_ack" : ""),
- (use_sideband == 2 ? " side-band-64k" : ""),
- (use_sideband == 1 ? " side-band" : ""),
- (args.use_thin_pack ? " thin-pack" : ""),
- (args.no_progress ? " no-progress" : ""),
- (args.include_tag ? " include-tag" : ""),
- (prefer_ofs_delta ? " ofs-delta" : ""));
- else
- packet_write(fd[1], "want %s\n", sha1_to_hex(remote));
+ remote_hex = sha1_to_hex(remote);
+ if (!fetching) {
+ struct strbuf c = STRBUF_INIT;
+ if (multi_ack == 2) strbuf_addstr(&c, " multi_ack_detailed");
+ if (multi_ack == 1) strbuf_addstr(&c, " multi_ack");
+ if (use_sideband == 2) strbuf_addstr(&c, " side-band-64k");
+ if (use_sideband == 1) strbuf_addstr(&c, " side-band");
+ if (args.use_thin_pack) strbuf_addstr(&c, " thin-pack");
+ if (args.no_progress) strbuf_addstr(&c, " no-progress");
+ if (args.include_tag) strbuf_addstr(&c, " include-tag");
+ if (prefer_ofs_delta) strbuf_addstr(&c, " ofs-delta");
+ packet_buf_write(&req_buf, "want %s%s\n", remote_hex, c.buf);
+ strbuf_release(&c);
+ } else
+ packet_buf_write(&req_buf, "want %s\n", remote_hex);
fetching++;
}
+
+ if (!fetching) {
+ strbuf_release(&req_buf);
+ packet_flush(fd[1]);
+ return 1;
+ }
+
if (is_repository_shallow())
- write_shallow_commits(fd[1], 1);
+ write_shallow_commits(&req_buf, 1);
if (args.depth > 0)
- packet_write(fd[1], "deepen %d", args.depth);
- packet_flush(fd[1]);
- if (!fetching)
- return 1;
+ packet_buf_write(&req_buf, "deepen %d", args.depth);
+ packet_buf_flush(&req_buf);
+ state_len = req_buf.len;
if (args.depth > 0) {
char line[1024];
unsigned char sha1[20];
- int len;
- while ((len = packet_read_line(fd[0], line, sizeof(line)))) {
+ send_request(fd[1], &req_buf);
+ while (packet_read_line(fd[0], line, sizeof(line))) {
if (!prefixcmp(line, "shallow ")) {
if (get_sha1_hex(line + 8, sha1))
die("invalid shallow line: %s", line);
}
die("expected shallow/unshallow, got %s", line);
}
+ } else if (!args.stateless_rpc)
+ send_request(fd[1], &req_buf);
+
+ if (!args.stateless_rpc) {
+ /* If we aren't using the stateless-rpc interface
+ * we don't need to retain the headers.
+ */
+ strbuf_setlen(&req_buf, 0);
+ state_len = 0;
}
flushes = 0;
retval = -1;
while ((sha1 = get_rev())) {
- packet_write(fd[1], "have %s\n", sha1_to_hex(sha1));
+ packet_buf_write(&req_buf, "have %s\n", sha1_to_hex(sha1));
if (args.verbose)
fprintf(stderr, "have %s\n", sha1_to_hex(sha1));
in_vain++;
if (!(31 & ++count)) {
int ack;
- packet_flush(fd[1]);
+ packet_buf_flush(&req_buf);
+ send_request(fd[1], &req_buf);
+ strbuf_setlen(&req_buf, state_len);
flushes++;
/*
* We keep one window "ahead" of the other side, and
* will wait for an ACK only on the next one
*/
- if (count == 32)
+ if (!args.stateless_rpc && count == 32)
continue;
+ consume_shallow_list(fd[0]);
do {
ack = get_ack(fd[0], result_sha1);
if (args.verbose && ack)
fprintf(stderr, "got ack %d %s\n", ack,
sha1_to_hex(result_sha1));
- if (ack == 1) {
+ switch (ack) {
+ case ACK:
flushes = 0;
multi_ack = 0;
retval = 0;
goto done;
- } else if (ack == 2) {
+ case ACK_common:
+ case ACK_ready:
+ case ACK_continue: {
struct commit *commit =
lookup_commit(result_sha1);
+ if (args.stateless_rpc
+ && ack == ACK_common
+ && !(commit->object.flags & COMMON)) {
+ /* We need to replay the have for this object
+ * on the next RPC request so the peer knows
+ * it is in common with us.
+ */
+ const char *hex = sha1_to_hex(result_sha1);
+ packet_buf_write(&req_buf, "have %s\n", hex);
+ state_len = req_buf.len;
+ }
mark_common(commit, 0, 1);
retval = 0;
in_vain = 0;
got_continue = 1;
+ break;
+ }
}
} while (ack);
flushes--;
}
}
done:
- packet_write(fd[1], "done\n");
+ packet_buf_write(&req_buf, "done\n");
+ send_request(fd[1], &req_buf);
if (args.verbose)
fprintf(stderr, "done\n");
if (retval != 0) {
multi_ack = 0;
flushes++;
}
+ strbuf_release(&req_buf);
+
+ consume_shallow_list(fd[0]);
while (flushes || multi_ack) {
int ack = get_ack(fd[0], result_sha1);
if (ack) {
if (args.verbose)
fprintf(stderr, "got ack (%d) %s\n", ack,
sha1_to_hex(result_sha1));
- if (ack == 1)
+ if (ack == ACK)
return 0;
multi_ack = 1;
continue;
{
int *xd = data;
- return recv_sideband("fetch-pack", xd[0], fd, 2);
+ int ret = recv_sideband("fetch-pack", xd[0], fd);
+ close(fd);
+ return ret;
}
static int get_pack(int xd[2], char **pack_lockfile)
if (is_repository_shallow() && !server_supports("shallow"))
die("Server does not support shallow clients");
- if (server_supports("multi_ack")) {
+ if (server_supports("multi_ack_detailed")) {
+ if (args.verbose)
+ fprintf(stderr, "Server supports multi_ack_detailed\n");
+ multi_ack = 2;
+ }
+ else if (server_supports("multi_ack")) {
if (args.verbose)
fprintf(stderr, "Server supports multi_ack\n");
multi_ack = 1;
/* When cloning, it is not unusual to have
* no common commit.
*/
- fprintf(stderr, "warning: no common commits\n");
+ warning("no common commits");
+ if (args.stateless_rpc)
+ packet_flush(fd[1]);
if (get_pack(fd, pack_lockfile))
die("git fetch-pack: fetch failed.");
struct ref *ref = NULL;
char *dest = NULL, **heads;
int fd[2];
+ char *pack_lockfile = NULL;
+ char **pack_lockfile_ptr = NULL;
struct child_process *conn;
nr_heads = 0;
args.no_progress = 1;
continue;
}
+ if (!strcmp("--stateless-rpc", arg)) {
+ args.stateless_rpc = 1;
+ continue;
+ }
+ if (!strcmp("--lock-pack", arg)) {
+ args.lock_pack = 1;
+ pack_lockfile_ptr = &pack_lockfile;
+ continue;
+ }
usage(fetch_pack_usage);
}
dest = (char *)arg;
if (!dest)
usage(fetch_pack_usage);
- conn = git_connect(fd, (char *)dest, args.uploadpack,
- args.verbose ? CONNECT_VERBOSE : 0);
- if (conn) {
- get_remote_heads(fd[0], &ref, 0, NULL, 0, NULL);
-
- ref = fetch_pack(&args, fd, conn, ref, dest, nr_heads, heads, NULL);
- close(fd[0]);
- close(fd[1]);
- if (finish_connect(conn))
- ref = NULL;
+ if (args.stateless_rpc) {
+ conn = NULL;
+ fd[0] = 0;
+ fd[1] = 1;
} else {
- ref = NULL;
+ conn = git_connect(fd, (char *)dest, args.uploadpack,
+ args.verbose ? CONNECT_VERBOSE : 0);
}
+
+ get_remote_heads(fd[0], &ref, 0, NULL, 0, NULL);
+
+ ref = fetch_pack(&args, fd, conn, ref, dest,
+ nr_heads, heads, pack_lockfile_ptr);
+ if (pack_lockfile) {
+ printf("lock %s\n", pack_lockfile);
+ fflush(stdout);
+ }
+ close(fd[0]);
+ close(fd[1]);
+ if (finish_connect(conn))
+ ref = NULL;
ret = !ref;
if (!ret && nr_heads) {
if (args.depth > 0) {
struct cache_time mtime;
+ struct strbuf sb = STRBUF_INIT;
char *shallow = git_path("shallow");
int fd;
mtime.sec = st.st_mtime;
-#ifdef USE_NSEC
- mtime.usec = st.st_mtim.usec;
-#endif
+ mtime.nsec = ST_MTIME_NSEC(st);
if (stat(shallow, &st)) {
if (mtime.sec)
die("shallow file was removed during fetch");
} else if (st.st_mtime != mtime.sec
#ifdef USE_NSEC
- || st.st_mtim.usec != mtime.usec
+ || ST_MTIME_NSEC(st) != mtime.nsec
#endif
)
die("shallow file was changed during fetch");
fd = hold_lock_file_for_update(&lock, shallow,
LOCK_DIE_ON_ERROR);
- if (!write_shallow_commits(fd, 0)) {
- unlink(shallow);
+ if (!write_shallow_commits(&sb, 0)
+ || write_in_full(fd, sb.buf, sb.len) != sb.len) {
+ unlink_or_warn(shallow);
rollback_lock_file(&lock);
} else {
commit_lock_file(&lock);
}
+ strbuf_release(&sb);
}
reprepare_packed_git();