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