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