| #include "cache.h" |
| #include "object-store.h" |
| #include "promisor-remote.h" |
| #include "config.h" |
| #include "transport.h" |
| #include "strvec.h" |
| |
| static char *repository_format_partial_clone; |
| |
| void set_repository_format_partial_clone(char *partial_clone) |
| { |
| repository_format_partial_clone = xstrdup_or_null(partial_clone); |
| } |
| |
| static int fetch_objects(const char *remote_name, |
| const struct object_id *oids, |
| int oid_nr) |
| { |
| struct child_process child = CHILD_PROCESS_INIT; |
| int i; |
| FILE *child_in; |
| |
| child.git_cmd = 1; |
| child.in = -1; |
| strvec_pushl(&child.args, "-c", "fetch.negotiationAlgorithm=noop", |
| "fetch", remote_name, "--no-tags", |
| "--no-write-fetch-head", "--recurse-submodules=no", |
| "--filter=blob:none", "--stdin", NULL); |
| if (start_command(&child)) |
| die(_("promisor-remote: unable to fork off fetch subprocess")); |
| child_in = xfdopen(child.in, "w"); |
| |
| for (i = 0; i < oid_nr; i++) { |
| if (fputs(oid_to_hex(&oids[i]), child_in) < 0) |
| die_errno(_("promisor-remote: could not write to fetch subprocess")); |
| if (fputc('\n', child_in) < 0) |
| die_errno(_("promisor-remote: could not write to fetch subprocess")); |
| } |
| |
| if (fclose(child_in) < 0) |
| die_errno(_("promisor-remote: could not close stdin to fetch subprocess")); |
| return finish_command(&child) ? -1 : 0; |
| } |
| |
| static struct promisor_remote *promisors; |
| static struct promisor_remote **promisors_tail = &promisors; |
| |
| static struct promisor_remote *promisor_remote_new(const char *remote_name) |
| { |
| struct promisor_remote *r; |
| |
| if (*remote_name == '/') { |
| warning(_("promisor remote name cannot begin with '/': %s"), |
| remote_name); |
| return NULL; |
| } |
| |
| FLEX_ALLOC_STR(r, name, remote_name); |
| |
| *promisors_tail = r; |
| promisors_tail = &r->next; |
| |
| return r; |
| } |
| |
| static struct promisor_remote *promisor_remote_lookup(const char *remote_name, |
| struct promisor_remote **previous) |
| { |
| struct promisor_remote *r, *p; |
| |
| for (p = NULL, r = promisors; r; p = r, r = r->next) |
| if (!strcmp(r->name, remote_name)) { |
| if (previous) |
| *previous = p; |
| return r; |
| } |
| |
| return NULL; |
| } |
| |
| static void promisor_remote_move_to_tail(struct promisor_remote *r, |
| struct promisor_remote *previous) |
| { |
| if (r->next == NULL) |
| return; |
| |
| if (previous) |
| previous->next = r->next; |
| else |
| promisors = r->next ? r->next : r; |
| r->next = NULL; |
| *promisors_tail = r; |
| promisors_tail = &r->next; |
| } |
| |
| static int promisor_remote_config(const char *var, const char *value, void *data) |
| { |
| const char *name; |
| size_t namelen; |
| const char *subkey; |
| |
| if (parse_config_key(var, "remote", &name, &namelen, &subkey) < 0) |
| return 0; |
| |
| if (!strcmp(subkey, "promisor")) { |
| char *remote_name; |
| |
| if (!git_config_bool(var, value)) |
| return 0; |
| |
| remote_name = xmemdupz(name, namelen); |
| |
| if (!promisor_remote_lookup(remote_name, NULL)) |
| promisor_remote_new(remote_name); |
| |
| free(remote_name); |
| return 0; |
| } |
| if (!strcmp(subkey, "partialclonefilter")) { |
| struct promisor_remote *r; |
| char *remote_name = xmemdupz(name, namelen); |
| |
| r = promisor_remote_lookup(remote_name, NULL); |
| if (!r) |
| r = promisor_remote_new(remote_name); |
| |
| free(remote_name); |
| |
| if (!r) |
| return 0; |
| |
| return git_config_string(&r->partial_clone_filter, var, value); |
| } |
| |
| return 0; |
| } |
| |
| static int initialized; |
| |
| static void promisor_remote_init(void) |
| { |
| if (initialized) |
| return; |
| initialized = 1; |
| |
| git_config(promisor_remote_config, NULL); |
| |
| if (repository_format_partial_clone) { |
| struct promisor_remote *o, *previous; |
| |
| o = promisor_remote_lookup(repository_format_partial_clone, |
| &previous); |
| if (o) |
| promisor_remote_move_to_tail(o, previous); |
| else |
| promisor_remote_new(repository_format_partial_clone); |
| } |
| } |
| |
| static void promisor_remote_clear(void) |
| { |
| while (promisors) { |
| struct promisor_remote *r = promisors; |
| promisors = promisors->next; |
| free(r); |
| } |
| |
| promisors_tail = &promisors; |
| } |
| |
| void promisor_remote_reinit(void) |
| { |
| initialized = 0; |
| promisor_remote_clear(); |
| promisor_remote_init(); |
| } |
| |
| struct promisor_remote *promisor_remote_find(const char *remote_name) |
| { |
| promisor_remote_init(); |
| |
| if (!remote_name) |
| return promisors; |
| |
| return promisor_remote_lookup(remote_name, NULL); |
| } |
| |
| int has_promisor_remote(void) |
| { |
| return !!promisor_remote_find(NULL); |
| } |
| |
| static int remove_fetched_oids(struct repository *repo, |
| struct object_id **oids, |
| int oid_nr, int to_free) |
| { |
| int i, remaining_nr = 0; |
| int *remaining = xcalloc(oid_nr, sizeof(*remaining)); |
| struct object_id *old_oids = *oids; |
| struct object_id *new_oids; |
| |
| for (i = 0; i < oid_nr; i++) |
| if (oid_object_info_extended(repo, &old_oids[i], NULL, |
| OBJECT_INFO_SKIP_FETCH_OBJECT)) { |
| remaining[i] = 1; |
| remaining_nr++; |
| } |
| |
| if (remaining_nr) { |
| int j = 0; |
| new_oids = xcalloc(remaining_nr, sizeof(*new_oids)); |
| for (i = 0; i < oid_nr; i++) |
| if (remaining[i]) |
| oidcpy(&new_oids[j++], &old_oids[i]); |
| *oids = new_oids; |
| if (to_free) |
| free(old_oids); |
| } |
| |
| free(remaining); |
| |
| return remaining_nr; |
| } |
| |
| int promisor_remote_get_direct(struct repository *repo, |
| const struct object_id *oids, |
| int oid_nr) |
| { |
| struct promisor_remote *r; |
| struct object_id *remaining_oids = (struct object_id *)oids; |
| int remaining_nr = oid_nr; |
| int to_free = 0; |
| int res = -1; |
| |
| if (oid_nr == 0) |
| return 0; |
| |
| promisor_remote_init(); |
| |
| for (r = promisors; r; r = r->next) { |
| if (fetch_objects(r->name, remaining_oids, remaining_nr) < 0) { |
| if (remaining_nr == 1) |
| continue; |
| remaining_nr = remove_fetched_oids(repo, &remaining_oids, |
| remaining_nr, to_free); |
| if (remaining_nr) { |
| to_free = 1; |
| continue; |
| } |
| } |
| res = 0; |
| break; |
| } |
| |
| if (to_free) |
| free(remaining_oids); |
| |
| return res; |
| } |