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