pack-objects: name pack files after trailer hash
[gitweb.git] / fetch-pack.c
index 6b5467c6dec9645f53d83cdad2467a158db622c0..a0e0350ae6bdf338b3c11c21fc050edb60c88569 100644 (file)
@@ -9,8 +9,10 @@
 #include "fetch-pack.h"
 #include "remote.h"
 #include "run-command.h"
+#include "connect.h"
 #include "transport.h"
 #include "version.h"
+#include "prio-queue.h"
 
 static int transfer_unpack_limit = -1;
 static int fetch_unpack_limit = -1;
@@ -37,7 +39,7 @@ static int marked;
  */
 #define MAX_IN_VAIN 256
 
-static struct commit_list *rev_list;
+static struct prio_queue rev_list = { compare_commits_by_commit_date };
 static int non_common_revs, multi_ack, use_sideband, allow_tip_sha1_in_want;
 
 static void rev_list_push(struct commit *commit, int mark)
@@ -49,7 +51,7 @@ static void rev_list_push(struct commit *commit, int mark)
                        if (parse_commit(commit))
                                return;
 
-               commit_list_insert_by_date(commit, &rev_list);
+               prio_queue_put(&rev_list, commit);
 
                if (!(commit->object.flags & COMMON))
                        non_common_revs++;
@@ -122,10 +124,10 @@ static const unsigned char *get_rev(void)
                unsigned int mark;
                struct commit_list *parents;
 
-               if (rev_list == NULL || non_common_revs == 0)
+               if (rev_list.nr == 0 || non_common_revs == 0)
                        return NULL;
 
-               commit = rev_list->item;
+               commit = prio_queue_get(&rev_list);
                if (!commit->object.parsed)
                        parse_commit(commit);
                parents = commit->parents;
@@ -152,8 +154,6 @@ static const unsigned char *get_rev(void)
                                mark_common(parents->item, 1, 0);
                        parents = parents->next;
                }
-
-               rev_list = rev_list->next;
        }
 
        return commit->object.sha1;
@@ -185,36 +185,6 @@ static void consume_shallow_list(struct fetch_pack_args *args, int fd)
        }
 }
 
-struct write_shallow_data {
-       struct strbuf *out;
-       int use_pack_protocol;
-       int count;
-};
-
-static int write_one_shallow(const struct commit_graft *graft, void *cb_data)
-{
-       struct write_shallow_data *data = cb_data;
-       const char *hex = sha1_to_hex(graft->sha1);
-       data->count++;
-       if (data->use_pack_protocol)
-               packet_buf_write(data->out, "shallow %s", hex);
-       else {
-               strbuf_addstr(data->out, hex);
-               strbuf_addch(data->out, '\n');
-       }
-       return 0;
-}
-
-static int write_shallow_commits(struct strbuf *out, int use_pack_protocol)
-{
-       struct write_shallow_data data;
-       data.out = out;
-       data.use_pack_protocol = use_pack_protocol;
-       data.count = 0;
-       for_each_commit_graft(write_one_shallow, &data);
-       return data.count;
-}
-
 static enum ack_type get_ack(int fd, unsigned char *result_sha1)
 {
        int len;
@@ -442,7 +412,7 @@ static int find_common(struct fetch_pack_args *args,
                                        in_vain = 0;
                                        got_continue = 1;
                                        if (ack == ACK_ready) {
-                                               rev_list = NULL;
+                                               clear_prio_queue(&rev_list);
                                                got_ready = 1;
                                        }
                                        break;
@@ -505,7 +475,7 @@ static int mark_complete(const char *refname, const unsigned char *sha1, int fla
                struct commit *commit = (struct commit *)o;
                if (!(commit->object.flags & COMPLETE)) {
                        commit->object.flags |= COMPLETE;
-                       commit_list_insert_by_date(commit, &complete);
+                       commit_list_insert(commit, &complete);
                }
        }
        return 0;
@@ -622,6 +592,7 @@ static int everything_local(struct fetch_pack_args *args,
        if (!args->depth) {
                for_each_ref(mark_complete, NULL);
                for_each_alternate_ref(mark_alternate_complete, NULL);
+               commit_list_sort_by_date(&complete);
                if (cutoff)
                        mark_recent_complete_commits(args, cutoff);
        }
@@ -688,9 +659,10 @@ static int get_pack(struct fetch_pack_args *args,
        const char *argv[22];
        char keep_arg[256];
        char hdr_arg[256];
-       const char **av;
+       const char **av, *cmd_name;
        int do_keep = args->keep_pack;
        struct child_process cmd;
+       int ret;
 
        memset(&demux, 0, sizeof(demux));
        if (use_sideband) {
@@ -734,7 +706,7 @@ static int get_pack(struct fetch_pack_args *args,
        if (do_keep) {
                if (pack_lockfile)
                        cmd.out = -1;
-               *av++ = "index-pack";
+               *av++ = cmd_name = "index-pack";
                *av++ = "--stdin";
                if (!args->quiet && !args->no_progress)
                        *av++ = "-v";
@@ -747,11 +719,14 @@ static int get_pack(struct fetch_pack_args *args,
                                strcpy(keep_arg + s, "localhost");
                        *av++ = keep_arg;
                }
+               if (args->check_self_contained_and_connected)
+                       *av++ = "--check-self-contained-and-connected";
        }
        else {
-               *av++ = "unpack-objects";
+               *av++ = cmd_name = "unpack-objects";
                if (args->quiet || args->no_progress)
                        *av++ = "-q";
+               args->check_self_contained_and_connected = 0;
        }
        if (*hdr_arg)
                *av++ = hdr_arg;
@@ -766,14 +741,19 @@ static int get_pack(struct fetch_pack_args *args,
        cmd.in = demux.out;
        cmd.git_cmd = 1;
        if (start_command(&cmd))
-               die("fetch-pack: unable to fork off %s", argv[0]);
+               die("fetch-pack: unable to fork off %s", cmd_name);
        if (do_keep && pack_lockfile) {
                *pack_lockfile = index_pack_lockfile(cmd.out);
                close(cmd.out);
        }
 
-       if (finish_command(&cmd))
-               die("%s failed", argv[0]);
+       ret = finish_command(&cmd);
+       if (!ret || (args->check_self_contained_and_connected && ret == 1))
+               args->self_contained_and_connected =
+                       args->check_self_contained_and_connected &&
+                       ret == 0;
+       else
+               die("%s failed", cmd_name);
        if (use_sideband && finish_async(&demux))
                die("error in sideband demultiplexer");
        return 0;
@@ -786,27 +766,6 @@ static int cmp_ref_by_name(const void *a_, const void *b_)
        return strcmp(a->name, b->name);
 }
 
-static void setup_alternate_shallow(void)
-{
-       struct strbuf sb = STRBUF_INIT;
-       int fd;
-
-       check_shallow_file_for_update();
-       fd = hold_lock_file_for_update(&shallow_lock, git_path("shallow"),
-                                      LOCK_DIE_ON_ERROR);
-       if (write_shallow_commits(&sb, 0)) {
-               if (write_in_full(fd, sb.buf, sb.len) != sb.len)
-                       die_errno("failed to write to %s", shallow_lock.filename);
-               alternate_shallow_file = shallow_lock.filename;
-       } else
-               /*
-                * is_repository_shallow() sees empty string as "no
-                * shallow file".
-                */
-               alternate_shallow_file = "";
-       strbuf_release(&sb);
-}
-
 static struct ref *do_fetch_pack(struct fetch_pack_args *args,
                                 int fd[2],
                                 const struct ref *orig_ref,
@@ -887,7 +846,9 @@ static struct ref *do_fetch_pack(struct fetch_pack_args *args,
        if (args->stateless_rpc)
                packet_flush(fd[1]);
        if (args->depth > 0)
-               setup_alternate_shallow();
+               setup_alternate_shallow(&shallow_lock, &alternate_shallow_file);
+       else
+               alternate_shallow_file = NULL;
        if (get_pack(args, fd, pack_lockfile))
                die("git fetch-pack: fetch failed.");
 
@@ -978,7 +939,7 @@ struct ref *fetch_pack(struct fetch_pack_args *args,
        }
        ref_cpy = do_fetch_pack(args, fd, ref, sought, nr_sought, pack_lockfile);
 
-       if (alternate_shallow_file) {
+       if (args->depth > 0 && alternate_shallow_file) {
                if (*alternate_shallow_file == '\0') { /* --unshallow */
                        unlink_or_warn(git_path("shallow"));
                        rollback_lock_file(&shallow_lock);