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] [--[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] [--[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 } opts;
  36
  37 static struct object_directory *find_odb(struct repository *r,
  38                                          const char *obj_dir)
  39 {
  40         struct object_directory *odb;
  41         char *obj_dir_real = real_pathdup(obj_dir, 1);
  42         struct strbuf odb_path_real = STRBUF_INIT;
  43
  44         prepare_alt_odb(r);
  45         for (odb = r->objects->odb; odb; odb = odb->next) {
  46                 strbuf_realpath(&odb_path_real, odb->path, 1);
  47                 if (!strcmp(obj_dir_real, odb_path_real.buf))
  48                         break;
  49         }
  50
  51         free(obj_dir_real);
  52         strbuf_release(&odb_path_real);
  53
  54         if (!odb)
  55                 die(_("could not find object directory matching %s"), obj_dir);
  56         return odb;
  57 }
  58
  59 static int graph_verify(int argc, const char **argv)
  60 {
  61         struct commit_graph *graph = NULL;
  62         struct object_directory *odb = NULL;
  63         char *graph_name;
  64         int open_ok;
  65         int fd;
  66         struct stat st;
  67         int flags = 0;
  68
  69         static struct option builtin_commit_graph_verify_options[] = {
  70                 OPT_STRING(0, "object-dir", &opts.obj_dir,
  71                            N_("dir"),
  72                            N_("The object directory to store the graph")),
  73                 OPT_BOOL(0, "shallow", &opts.shallow,
  74                          N_("if the commit-graph is split, only verify the tip file")),
  75                 OPT_BOOL(0, "progress", &opts.progress, N_("force progress reporting")),
  76                 OPT_END(),
  77         };
  78
  79         trace2_cmd_mode("verify");
  80
  81         opts.progress = isatty(2);
  82         argc = parse_options(argc, argv, NULL,
  83                              builtin_commit_graph_verify_options,
  84                              builtin_commit_graph_verify_usage, 0);
  85
  86         if (!opts.obj_dir)
  87                 opts.obj_dir = get_object_directory();
  88         if (opts.shallow)
  89                 flags |= COMMIT_GRAPH_VERIFY_SHALLOW;
  90         if (opts.progress)
  91                 flags |= COMMIT_GRAPH_WRITE_PROGRESS;
  92
  93         odb = find_odb(the_repository, opts.obj_dir);
  94         graph_name = get_commit_graph_filename(odb);
  95         open_ok = open_commit_graph(graph_name, &fd, &st);
  96         if (!open_ok && errno != ENOENT)
  97                 die_errno(_("Could not open commit-graph '%s'"), graph_name);
  98
  99         FREE_AND_NULL(graph_name);
 100
 101         if (open_ok)
 102                 graph = load_commit_graph_one_fd_st(fd, &st, odb);
 103         else
 104                 graph = read_commit_graph_one(the_repository, odb);
 105
 106         /* Return failure if open_ok predicted success */
 107         if (!graph)
 108                 return !!open_ok;
 109
 110         UNLEAK(graph);
 111         return verify_commit_graph(the_repository, graph, flags);
 112 }
 113
 114 extern int read_replace_refs;
 115 static struct split_commit_graph_opts split_opts;
 116
 117 static int graph_write(int argc, const char **argv)
 118 {
 119         struct string_list *pack_indexes = NULL;
 120         struct string_list *commit_hex = NULL;
 121         struct object_directory *odb = NULL;
 122         struct string_list lines;
 123         int result = 0;
 124         enum commit_graph_write_flags flags = 0;
 125
 126         static struct option builtin_commit_graph_write_options[] = {
 127                 OPT_STRING(0, "object-dir", &opts.obj_dir,
 128                         N_("dir"),
 129                         N_("The object directory to store the graph")),
 130                 OPT_BOOL(0, "reachable", &opts.reachable,
 131                         N_("start walk at all refs")),
 132                 OPT_BOOL(0, "stdin-packs", &opts.stdin_packs,
 133                         N_("scan pack-indexes listed by stdin for commits")),
 134                 OPT_BOOL(0, "stdin-commits", &opts.stdin_commits,
 135                         N_("start walk at commits listed by stdin")),
 136                 OPT_BOOL(0, "append", &opts.append,
 137                         N_("include all commits already in the commit-graph file")),
 138                 OPT_BOOL(0, "progress", &opts.progress, N_("force progress reporting")),
 139                 OPT_BOOL(0, "split", &opts.split,
 140                         N_("allow writing an incremental commit-graph file")),
 141                 OPT_INTEGER(0, "max-commits", &split_opts.max_commits,
 142                         N_("maximum number of commits in a non-base split commit-graph")),
 143                 OPT_INTEGER(0, "size-multiple", &split_opts.size_multiple,
 144                         N_("maximum ratio between two levels of a split commit-graph")),
 145                 OPT_EXPIRY_DATE(0, "expire-time", &split_opts.expire_time,
 146                         N_("maximum number of commits in a non-base split commit-graph")),
 147                 OPT_END(),
 148         };
 149
 150         opts.progress = isatty(2);
 151         split_opts.size_multiple = 2;
 152         split_opts.max_commits = 0;
 153         split_opts.expire_time = 0;
 154
 155         trace2_cmd_mode("write");
 156
 157         argc = parse_options(argc, argv, NULL,
 158                              builtin_commit_graph_write_options,
 159                              builtin_commit_graph_write_usage, 0);
 160
 161         if (opts.reachable + opts.stdin_packs + opts.stdin_commits > 1)
 162                 die(_("use at most one of --reachable, --stdin-commits, or --stdin-packs"));
 163         if (!opts.obj_dir)
 164                 opts.obj_dir = get_object_directory();
 165         if (opts.append)
 166                 flags |= COMMIT_GRAPH_WRITE_APPEND;
 167         if (opts.split)
 168                 flags |= COMMIT_GRAPH_WRITE_SPLIT;
 169         if (opts.progress)
 170                 flags |= COMMIT_GRAPH_WRITE_PROGRESS;
 171
 172         read_replace_refs = 0;
 173         odb = find_odb(the_repository, opts.obj_dir);
 174
 175         if (opts.reachable) {
 176                 if (write_commit_graph_reachable(odb, flags, &split_opts))
 177                         return 1;
 178                 return 0;
 179         }
 180
 181         string_list_init(&lines, 0);
 182         if (opts.stdin_packs || opts.stdin_commits) {
 183                 struct strbuf buf = STRBUF_INIT;
 184
 185                 while (strbuf_getline(&buf, stdin) != EOF)
 186                         string_list_append(&lines, strbuf_detach(&buf, NULL));
 187
 188                 if (opts.stdin_packs)
 189                         pack_indexes = &lines;
 190                 if (opts.stdin_commits) {
 191                         commit_hex = &lines;
 192                         flags |= COMMIT_GRAPH_WRITE_CHECK_OIDS;
 193                 }
 194
 195                 UNLEAK(buf);
 196         }
 197
 198         if (write_commit_graph(odb,
 199                                pack_indexes,
 200                                commit_hex,
 201                                flags,
 202                                &split_opts))
 203                 result = 1;
 204
 205         UNLEAK(lines);
 206         return result;
 207 }
 208
 209 int cmd_commit_graph(int argc, const char **argv, const char *prefix)
 210 {
 211         static struct option builtin_commit_graph_options[] = {
 212                 OPT_STRING(0, "object-dir", &opts.obj_dir,
 213                         N_("dir"),
 214                         N_("The object directory to store the graph")),
 215                 OPT_END(),
 216         };
 217
 218         if (argc == 2 && !strcmp(argv[1], "-h"))
 219                 usage_with_options(builtin_commit_graph_usage,
 220                                    builtin_commit_graph_options);
 221
 222         git_config(git_default_config, NULL);
 223         argc = parse_options(argc, argv, prefix,
 224                              builtin_commit_graph_options,
 225                              builtin_commit_graph_usage,
 226                              PARSE_OPT_STOP_AT_NON_OPTION);
 227
 228         save_commit_buffer = 0;
 229
 230         if (argc > 0) {
 231                 if (!strcmp(argv[0], "verify"))
 232                         return graph_verify(argc, argv);
 233                 if (!strcmp(argv[0], "write"))
 234                         return graph_write(argc, argv);
 235         }
 236
 237         usage_with_options(builtin_commit_graph_usage,
 238                            builtin_commit_graph_options);
 239 }