git.oblomov.eu Git - git/blob - builtin/commit-graph.c

   1 #include "builtin.h"
   2 #include "config.h"
   3 #include "dir.h"
   4 #include "lockfile.h"
   5 #include "parse-options.h"
   6 #include "repository.h"
   7 #include "commit-graph.h"
   8 #include "object-store.h"
   9 #include "progress.h"
  10
  11 static char const * const builtin_commit_graph_usage[] = {
  12         N_("git commit-graph verify [--object-dir <objdir>] [--shallow] [--[no-]progress]"),
  13         N_("git commit-graph write [--object-dir <objdir>] [--append] "
  14            "[--split[=<strategy>]] [--reachable|--stdin-packs|--stdin-commits] "
  15            "[--changed-paths] [--[no-]progress] <split options>"),
  16         NULL
  17 };
  18
  19 static const char * const builtin_commit_graph_verify_usage[] = {
  20         N_("git commit-graph verify [--object-dir <objdir>] [--shallow] [--[no-]progress]"),
  21         NULL
  22 };
  23
  24 static const char * const builtin_commit_graph_write_usage[] = {
  25         N_("git commit-graph write [--object-dir <objdir>] [--append] "
  26            "[--split[=<strategy>]] [--reachable|--stdin-packs|--stdin-commits] "
  27            "[--changed-paths] [--[no-]progress] <split options>"),
  28         NULL
  29 };
  30
  31 static struct opts_commit_graph {
  32         const char *obj_dir;
  33         int reachable;
  34         int stdin_packs;
  35         int stdin_commits;
  36         int append;
  37         int split;
  38         int shallow;
  39         int progress;
  40         int enable_changed_paths;
  41 } opts;
  42
  43 static struct object_directory *find_odb(struct repository *r,
  44                                          const char *obj_dir)
  45 {
  46         struct object_directory *odb;
  47         char *obj_dir_real = real_pathdup(obj_dir, 1);
  48         struct strbuf odb_path_real = STRBUF_INIT;
  49
  50         prepare_alt_odb(r);
  51         for (odb = r->objects->odb; odb; odb = odb->next) {
  52                 strbuf_realpath(&odb_path_real, odb->path, 1);
  53                 if (!strcmp(obj_dir_real, odb_path_real.buf))
  54                         break;
  55         }
  56
  57         free(obj_dir_real);
  58         strbuf_release(&odb_path_real);
  59
  60         if (!odb)
  61                 die(_("could not find object directory matching %s"), obj_dir);
  62         return odb;
  63 }
  64
  65 static int graph_verify(int argc, const char **argv)
  66 {
  67         struct commit_graph *graph = NULL;
  68         struct object_directory *odb = NULL;
  69         char *graph_name;
  70         int open_ok;
  71         int fd;
  72         struct stat st;
  73         int flags = 0;
  74
  75         static struct option builtin_commit_graph_verify_options[] = {
  76                 OPT_STRING(0, "object-dir", &opts.obj_dir,
  77                            N_("dir"),
  78                            N_("The object directory to store the graph")),
  79                 OPT_BOOL(0, "shallow", &opts.shallow,
  80                          N_("if the commit-graph is split, only verify the tip file")),
  81                 OPT_BOOL(0, "progress", &opts.progress, N_("force progress reporting")),
  82                 OPT_END(),
  83         };
  84
  85         trace2_cmd_mode("verify");
  86
  87         opts.progress = isatty(2);
  88         argc = parse_options(argc, argv, NULL,
  89                              builtin_commit_graph_verify_options,
  90                              builtin_commit_graph_verify_usage, 0);
  91
  92         if (!opts.obj_dir)
  93                 opts.obj_dir = get_object_directory();
  94         if (opts.shallow)
  95                 flags |= COMMIT_GRAPH_VERIFY_SHALLOW;
  96         if (opts.progress)
  97                 flags |= COMMIT_GRAPH_WRITE_PROGRESS;
  98
  99         odb = find_odb(the_repository, opts.obj_dir);
 100         graph_name = get_commit_graph_filename(odb);
 101         open_ok = open_commit_graph(graph_name, &fd, &st);
 102         if (!open_ok && errno != ENOENT)
 103                 die_errno(_("Could not open commit-graph '%s'"), graph_name);
 104
 105         FREE_AND_NULL(graph_name);
 106
 107         if (open_ok)
 108                 graph = load_commit_graph_one_fd_st(fd, &st, odb);
 109         else
 110                 graph = read_commit_graph_one(the_repository, odb);
 111
 112         /* Return failure if open_ok predicted success */
 113         if (!graph)
 114                 return !!open_ok;
 115
 116         UNLEAK(graph);
 117         return verify_commit_graph(the_repository, graph, flags);
 118 }
 119
 120 extern int read_replace_refs;
 121 static struct split_commit_graph_opts split_opts;
 122
 123 static int write_option_parse_split(const struct option *opt, const char *arg,
 124                                     int unset)
 125 {
 126         enum commit_graph_split_flags *flags = opt->value;
 127
 128         opts.split = 1;
 129         if (!arg)
 130                 return 0;
 131
 132         if (!strcmp(arg, "no-merge"))
 133                 *flags = COMMIT_GRAPH_SPLIT_MERGE_PROHIBITED;
 134         else if (!strcmp(arg, "replace"))
 135                 *flags = COMMIT_GRAPH_SPLIT_REPLACE;
 136         else
 137                 die(_("unrecognized --split argument, %s"), arg);
 138
 139         return 0;
 140 }
 141
 142 static int read_one_commit(struct oidset *commits, struct progress *progress,
 143                            const char *hash)
 144 {
 145         struct commit *result;
 146         struct object_id oid;
 147         const char *end;
 148
 149         if (parse_oid_hex(hash, &oid, &end))
 150                 return error(_("unexpected non-hex object ID: %s"), hash);
 151
 152         result = lookup_commit_reference_gently(the_repository, &oid, 1);
 153         if (result)
 154                 oidset_insert(commits, &result->object.oid);
 155         else
 156                 return error(_("invalid commit object id: %s"), hash);
 157
 158         display_progress(progress, oidset_size(commits));
 159
 160         return 0;
 161 }
 162
 163 static int graph_write(int argc, const char **argv)
 164 {
 165         struct string_list pack_indexes = STRING_LIST_INIT_NODUP;
 166         struct strbuf buf = STRBUF_INIT;
 167         struct oidset commits = OIDSET_INIT;
 168         struct object_directory *odb = NULL;
 169         int result = 0;
 170         enum commit_graph_write_flags flags = 0;
 171         struct progress *progress = NULL;
 172
 173         static struct option builtin_commit_graph_write_options[] = {
 174                 OPT_STRING(0, "object-dir", &opts.obj_dir,
 175                         N_("dir"),
 176                         N_("The object directory to store the graph")),
 177                 OPT_BOOL(0, "reachable", &opts.reachable,
 178                         N_("start walk at all refs")),
 179                 OPT_BOOL(0, "stdin-packs", &opts.stdin_packs,
 180                         N_("scan pack-indexes listed by stdin for commits")),
 181                 OPT_BOOL(0, "stdin-commits", &opts.stdin_commits,
 182                         N_("start walk at commits listed by stdin")),
 183                 OPT_BOOL(0, "append", &opts.append,
 184                         N_("include all commits already in the commit-graph file")),
 185                 OPT_BOOL(0, "changed-paths", &opts.enable_changed_paths,
 186                         N_("enable computation for changed paths")),
 187                 OPT_BOOL(0, "progress", &opts.progress, N_("force progress reporting")),
 188                 OPT_CALLBACK_F(0, "split", &split_opts.flags, NULL,
 189                         N_("allow writing an incremental commit-graph file"),
 190                         PARSE_OPT_OPTARG | PARSE_OPT_NONEG,
 191                         write_option_parse_split),
 192                 OPT_INTEGER(0, "max-commits", &split_opts.max_commits,
 193                         N_("maximum number of commits in a non-base split commit-graph")),
 194                 OPT_INTEGER(0, "size-multiple", &split_opts.size_multiple,
 195                         N_("maximum ratio between two levels of a split commit-graph")),
 196                 OPT_EXPIRY_DATE(0, "expire-time", &split_opts.expire_time,
 197                         N_("only expire files older than a given date-time")),
 198                 OPT_END(),
 199         };
 200
 201         opts.progress = isatty(2);
 202         split_opts.size_multiple = 2;
 203         split_opts.max_commits = 0;
 204         split_opts.expire_time = 0;
 205
 206         trace2_cmd_mode("write");
 207
 208         argc = parse_options(argc, argv, NULL,
 209                              builtin_commit_graph_write_options,
 210                              builtin_commit_graph_write_usage, 0);
 211
 212         if (opts.reachable + opts.stdin_packs + opts.stdin_commits > 1)
 213                 die(_("use at most one of --reachable, --stdin-commits, or --stdin-packs"));
 214         if (!opts.obj_dir)
 215                 opts.obj_dir = get_object_directory();
 216         if (opts.append)
 217                 flags |= COMMIT_GRAPH_WRITE_APPEND;
 218         if (opts.split)
 219                 flags |= COMMIT_GRAPH_WRITE_SPLIT;
 220         if (opts.progress)
 221                 flags |= COMMIT_GRAPH_WRITE_PROGRESS;
 222         if (opts.enable_changed_paths ||
 223             git_env_bool(GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS, 0))
 224                 flags |= COMMIT_GRAPH_WRITE_BLOOM_FILTERS;
 225
 226         read_replace_refs = 0;
 227         odb = find_odb(the_repository, opts.obj_dir);
 228
 229         if (opts.reachable) {
 230                 if (write_commit_graph_reachable(odb, flags, &split_opts))
 231                         return 1;
 232                 return 0;
 233         }
 234
 235         if (opts.stdin_packs) {
 236                 while (strbuf_getline(&buf, stdin) != EOF)
 237                         string_list_append(&pack_indexes,
 238                                            strbuf_detach(&buf, NULL));
 239         } else if (opts.stdin_commits) {
 240                 oidset_init(&commits, 0);
 241                 flags |= COMMIT_GRAPH_WRITE_CHECK_OIDS;
 242                 if (opts.progress)
 243                         progress = start_delayed_progress(
 244                                 _("Collecting commits from input"), 0);
 245
 246                 while (strbuf_getline(&buf, stdin) != EOF) {
 247                         if (read_one_commit(&commits, progress, buf.buf)) {
 248                                 result = 1;
 249                                 goto cleanup;
 250                         }
 251                 }
 252
 253
 254         }
 255
 256         if (write_commit_graph(odb,
 257                                opts.stdin_packs ? &pack_indexes : NULL,
 258                                opts.stdin_commits ? &commits : NULL,
 259                                flags,
 260                                &split_opts))
 261                 result = 1;
 262
 263 cleanup:
 264         string_list_clear(&pack_indexes, 0);
 265         strbuf_release(&buf);
 266         if (progress)
 267                 stop_progress(&progress);
 268         return result;
 269 }
 270
 271 int cmd_commit_graph(int argc, const char **argv, const char *prefix)
 272 {
 273         static struct option builtin_commit_graph_options[] = {
 274                 OPT_STRING(0, "object-dir", &opts.obj_dir,
 275                         N_("dir"),
 276                         N_("The object directory to store the graph")),
 277                 OPT_END(),
 278         };
 279
 280         if (argc == 2 && !strcmp(argv[1], "-h"))
 281                 usage_with_options(builtin_commit_graph_usage,
 282                                    builtin_commit_graph_options);
 283
 284         git_config(git_default_config, NULL);
 285         argc = parse_options(argc, argv, prefix,
 286                              builtin_commit_graph_options,
 287                              builtin_commit_graph_usage,
 288                              PARSE_OPT_STOP_AT_NON_OPTION);
 289
 290         save_commit_buffer = 0;
 291
 292         if (argc > 0) {
 293                 if (!strcmp(argv[0], "verify"))
 294                         return graph_verify(argc, argv);
 295                 if (!strcmp(argv[0], "write"))
 296                         return graph_write(argc, argv);
 297         }
 298
 299         usage_with_options(builtin_commit_graph_usage,
 300                            builtin_commit_graph_options);
 301 }