diff options
Diffstat (limited to 'builtin/commit-graph.c')
| -rw-r--r-- | builtin/commit-graph.c | 328 |
1 files changed, 328 insertions, 0 deletions
diff --git a/builtin/commit-graph.c b/builtin/commit-graph.c new file mode 100644 index 0000000..e8f77f5 --- /dev/null +++ b/builtin/commit-graph.c @@ -0,0 +1,328 @@ +#include "builtin.h" +#include "config.h" +#include "dir.h" +#include "lockfile.h" +#include "parse-options.h" +#include "repository.h" +#include "commit-graph.h" +#include "object-store.h" +#include "progress.h" +#include "tag.h" + +#define BUILTIN_COMMIT_GRAPH_VERIFY_USAGE \ + N_("git commit-graph verify [--object-dir <dir>] [--shallow] [--[no-]progress]") + +#define BUILTIN_COMMIT_GRAPH_WRITE_USAGE \ + N_("git commit-graph write [--object-dir <dir>] [--append]\n" \ + " [--split[=<strategy>]] [--reachable | --stdin-packs | --stdin-commits]\n" \ + " [--changed-paths] [--[no-]max-new-filters <n>] [--[no-]progress]\n" \ + " <split options>") + +static const char * builtin_commit_graph_verify_usage[] = { + BUILTIN_COMMIT_GRAPH_VERIFY_USAGE, + NULL +}; + +static const char * builtin_commit_graph_write_usage[] = { + BUILTIN_COMMIT_GRAPH_WRITE_USAGE, + NULL +}; + +static char const * const builtin_commit_graph_usage[] = { + BUILTIN_COMMIT_GRAPH_VERIFY_USAGE, + BUILTIN_COMMIT_GRAPH_WRITE_USAGE, + NULL, +}; + +static struct opts_commit_graph { + const char *obj_dir; + int reachable; + int stdin_packs; + int stdin_commits; + int append; + int split; + int shallow; + int progress; + int enable_changed_paths; +} opts; + +static struct option common_opts[] = { + OPT_STRING(0, "object-dir", &opts.obj_dir, + N_("dir"), + N_("the object directory to store the graph")), + OPT_END() +}; + +static struct option *add_common_options(struct option *to) +{ + return parse_options_concat(common_opts, to); +} + +static int graph_verify(int argc, const char **argv, const char *prefix) +{ + struct commit_graph *graph = NULL; + struct object_directory *odb = NULL; + char *graph_name; + int open_ok; + int fd; + struct stat st; + int flags = 0; + + static struct option builtin_commit_graph_verify_options[] = { + OPT_BOOL(0, "shallow", &opts.shallow, + N_("if the commit-graph is split, only verify the tip file")), + OPT_BOOL(0, "progress", &opts.progress, + N_("force progress reporting")), + OPT_END(), + }; + struct option *options = add_common_options(builtin_commit_graph_verify_options); + + trace2_cmd_mode("verify"); + + opts.progress = isatty(2); + argc = parse_options(argc, argv, prefix, + options, + builtin_commit_graph_verify_usage, 0); + if (argc) + usage_with_options(builtin_commit_graph_verify_usage, options); + + if (!opts.obj_dir) + opts.obj_dir = get_object_directory(); + if (opts.shallow) + flags |= COMMIT_GRAPH_VERIFY_SHALLOW; + if (opts.progress) + flags |= COMMIT_GRAPH_WRITE_PROGRESS; + + odb = find_odb(the_repository, opts.obj_dir); + graph_name = get_commit_graph_filename(odb); + open_ok = open_commit_graph(graph_name, &fd, &st); + if (!open_ok && errno != ENOENT) + die_errno(_("Could not open commit-graph '%s'"), graph_name); + + FREE_AND_NULL(graph_name); + FREE_AND_NULL(options); + + if (open_ok) + graph = load_commit_graph_one_fd_st(the_repository, fd, &st, odb); + else + graph = read_commit_graph_one(the_repository, odb); + + /* Return failure if open_ok predicted success */ + if (!graph) + return !!open_ok; + + UNLEAK(graph); + return verify_commit_graph(the_repository, graph, flags); +} + +extern int read_replace_refs; +static struct commit_graph_opts write_opts; + +static int write_option_parse_split(const struct option *opt, const char *arg, + int unset) +{ + enum commit_graph_split_flags *flags = opt->value; + + BUG_ON_OPT_NEG(unset); + + opts.split = 1; + if (!arg) + return 0; + + if (!strcmp(arg, "no-merge")) + *flags = COMMIT_GRAPH_SPLIT_MERGE_PROHIBITED; + else if (!strcmp(arg, "replace")) + *flags = COMMIT_GRAPH_SPLIT_REPLACE; + else + die(_("unrecognized --split argument, %s"), arg); + + return 0; +} + +static int read_one_commit(struct oidset *commits, struct progress *progress, + const char *hash) +{ + struct object *result; + struct object_id oid; + const char *end; + + if (parse_oid_hex(hash, &oid, &end)) + return error(_("unexpected non-hex object ID: %s"), hash); + + result = deref_tag(the_repository, parse_object(the_repository, &oid), + NULL, 0); + if (!result) + return error(_("invalid object: %s"), hash); + else if (object_as_type(result, OBJ_COMMIT, 1)) + oidset_insert(commits, &result->oid); + + display_progress(progress, oidset_size(commits)); + + return 0; +} + +static int write_option_max_new_filters(const struct option *opt, + const char *arg, + int unset) +{ + int *to = opt->value; + if (unset) + *to = -1; + else { + const char *s; + *to = strtol(arg, (char **)&s, 10); + if (*s) + return error(_("option `%s' expects a numerical value"), + "max-new-filters"); + } + return 0; +} + +static int git_commit_graph_write_config(const char *var, const char *value, + void *cb UNUSED) +{ + if (!strcmp(var, "commitgraph.maxnewfilters")) + write_opts.max_new_filters = git_config_int(var, value); + /* + * No need to fall-back to 'git_default_config', since this was already + * called in 'cmd_commit_graph()'. + */ + return 0; +} + +static int graph_write(int argc, const char **argv, const char *prefix) +{ + struct string_list pack_indexes = STRING_LIST_INIT_DUP; + struct strbuf buf = STRBUF_INIT; + struct oidset commits = OIDSET_INIT; + struct object_directory *odb = NULL; + int result = 0; + enum commit_graph_write_flags flags = 0; + struct progress *progress = NULL; + + static struct option builtin_commit_graph_write_options[] = { + OPT_BOOL(0, "reachable", &opts.reachable, + N_("start walk at all refs")), + OPT_BOOL(0, "stdin-packs", &opts.stdin_packs, + N_("scan pack-indexes listed by stdin for commits")), + OPT_BOOL(0, "stdin-commits", &opts.stdin_commits, + N_("start walk at commits listed by stdin")), + OPT_BOOL(0, "append", &opts.append, + N_("include all commits already in the commit-graph file")), + OPT_BOOL(0, "changed-paths", &opts.enable_changed_paths, + N_("enable computation for changed paths")), + OPT_CALLBACK_F(0, "split", &write_opts.split_flags, NULL, + N_("allow writing an incremental commit-graph file"), + PARSE_OPT_OPTARG | PARSE_OPT_NONEG, + write_option_parse_split), + OPT_INTEGER(0, "max-commits", &write_opts.max_commits, + N_("maximum number of commits in a non-base split commit-graph")), + OPT_INTEGER(0, "size-multiple", &write_opts.size_multiple, + N_("maximum ratio between two levels of a split commit-graph")), + OPT_EXPIRY_DATE(0, "expire-time", &write_opts.expire_time, + N_("only expire files older than a given date-time")), + OPT_CALLBACK_F(0, "max-new-filters", &write_opts.max_new_filters, + NULL, N_("maximum number of changed-path Bloom filters to compute"), + 0, write_option_max_new_filters), + OPT_BOOL(0, "progress", &opts.progress, + N_("force progress reporting")), + OPT_END(), + }; + struct option *options = add_common_options(builtin_commit_graph_write_options); + + opts.progress = isatty(2); + opts.enable_changed_paths = -1; + write_opts.size_multiple = 2; + write_opts.max_commits = 0; + write_opts.expire_time = 0; + write_opts.max_new_filters = -1; + + trace2_cmd_mode("write"); + + git_config(git_commit_graph_write_config, &opts); + + argc = parse_options(argc, argv, prefix, + options, + builtin_commit_graph_write_usage, 0); + if (argc) + usage_with_options(builtin_commit_graph_write_usage, options); + + if (opts.reachable + opts.stdin_packs + opts.stdin_commits > 1) + die(_("use at most one of --reachable, --stdin-commits, or --stdin-packs")); + if (!opts.obj_dir) + opts.obj_dir = get_object_directory(); + if (opts.append) + flags |= COMMIT_GRAPH_WRITE_APPEND; + if (opts.split) + flags |= COMMIT_GRAPH_WRITE_SPLIT; + if (opts.progress) + flags |= COMMIT_GRAPH_WRITE_PROGRESS; + if (!opts.enable_changed_paths) + flags |= COMMIT_GRAPH_NO_WRITE_BLOOM_FILTERS; + if (opts.enable_changed_paths == 1 || + git_env_bool(GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS, 0)) + flags |= COMMIT_GRAPH_WRITE_BLOOM_FILTERS; + + odb = find_odb(the_repository, opts.obj_dir); + + if (opts.reachable) { + if (write_commit_graph_reachable(odb, flags, &write_opts)) + return 1; + return 0; + } + + if (opts.stdin_packs) { + while (strbuf_getline(&buf, stdin) != EOF) + string_list_append_nodup(&pack_indexes, + strbuf_detach(&buf, NULL)); + } else if (opts.stdin_commits) { + oidset_init(&commits, 0); + if (opts.progress) + progress = start_delayed_progress( + _("Collecting commits from input"), 0); + + while (strbuf_getline(&buf, stdin) != EOF) { + if (read_one_commit(&commits, progress, buf.buf)) { + result = 1; + goto cleanup; + } + } + + stop_progress(&progress); + } + + if (write_commit_graph(odb, + opts.stdin_packs ? &pack_indexes : NULL, + opts.stdin_commits ? &commits : NULL, + flags, + &write_opts)) + result = 1; + +cleanup: + FREE_AND_NULL(options); + string_list_clear(&pack_indexes, 0); + strbuf_release(&buf); + return result; +} + +int cmd_commit_graph(int argc, const char **argv, const char *prefix) +{ + parse_opt_subcommand_fn *fn = NULL; + struct option builtin_commit_graph_options[] = { + OPT_SUBCOMMAND("verify", &fn, graph_verify), + OPT_SUBCOMMAND("write", &fn, graph_write), + OPT_END(), + }; + struct option *options = parse_options_concat(builtin_commit_graph_options, common_opts); + + git_config(git_default_config, NULL); + + read_replace_refs = 0; + save_commit_buffer = 0; + + argc = parse_options(argc, argv, prefix, options, + builtin_commit_graph_usage, 0); + FREE_AND_NULL(options); + + return fn(argc, argv, prefix); +} |