mirror of https://github.com/git/git.git
2574 lines
65 KiB
C
2574 lines
65 KiB
C
/*
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* git gc builtin command
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*
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* Cleanup unreachable files and optimize the repository.
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*
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* Copyright (c) 2007 James Bowes
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*
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* Based on git-gc.sh, which is
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*
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* Copyright (c) 2006 Shawn O. Pearce
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*/
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#include "builtin.h"
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#include "repository.h"
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#include "config.h"
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#include "tempfile.h"
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#include "lockfile.h"
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#include "parse-options.h"
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#include "run-command.h"
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#include "sigchain.h"
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#include "strvec.h"
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#include "commit.h"
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#include "commit-graph.h"
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#include "packfile.h"
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#include "object-store.h"
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#include "pack.h"
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#include "pack-objects.h"
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#include "blob.h"
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#include "tree.h"
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#include "promisor-remote.h"
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#include "refs.h"
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#include "remote.h"
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#include "exec-cmd.h"
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#include "hook.h"
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#define FAILED_RUN "failed to run %s"
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static const char * const builtin_gc_usage[] = {
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N_("git gc [<options>]"),
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NULL
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};
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static int pack_refs = 1;
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static int prune_reflogs = 1;
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static int cruft_packs = 0;
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static int aggressive_depth = 50;
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static int aggressive_window = 250;
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static int gc_auto_threshold = 6700;
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static int gc_auto_pack_limit = 50;
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static int detach_auto = 1;
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static timestamp_t gc_log_expire_time;
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static const char *gc_log_expire = "1.day.ago";
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static const char *prune_expire = "2.weeks.ago";
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static const char *prune_worktrees_expire = "3.months.ago";
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static unsigned long big_pack_threshold;
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static unsigned long max_delta_cache_size = DEFAULT_DELTA_CACHE_SIZE;
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static struct strvec reflog = STRVEC_INIT;
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static struct strvec repack = STRVEC_INIT;
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static struct strvec prune = STRVEC_INIT;
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static struct strvec prune_worktrees = STRVEC_INIT;
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static struct strvec rerere = STRVEC_INIT;
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static struct tempfile *pidfile;
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static struct lock_file log_lock;
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static struct string_list pack_garbage = STRING_LIST_INIT_DUP;
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static void clean_pack_garbage(void)
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{
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int i;
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for (i = 0; i < pack_garbage.nr; i++)
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unlink_or_warn(pack_garbage.items[i].string);
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string_list_clear(&pack_garbage, 0);
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}
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static void report_pack_garbage(unsigned seen_bits, const char *path)
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{
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if (seen_bits == PACKDIR_FILE_IDX)
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string_list_append(&pack_garbage, path);
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}
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static void process_log_file(void)
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{
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struct stat st;
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if (fstat(get_lock_file_fd(&log_lock), &st)) {
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/*
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* Perhaps there was an i/o error or another
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* unlikely situation. Try to make a note of
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* this in gc.log along with any existing
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* messages.
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*/
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int saved_errno = errno;
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fprintf(stderr, _("Failed to fstat %s: %s"),
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get_lock_file_path(&log_lock),
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strerror(saved_errno));
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fflush(stderr);
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commit_lock_file(&log_lock);
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errno = saved_errno;
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} else if (st.st_size) {
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/* There was some error recorded in the lock file */
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commit_lock_file(&log_lock);
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} else {
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/* No error, clean up any old gc.log */
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unlink(git_path("gc.log"));
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rollback_lock_file(&log_lock);
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}
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}
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static void process_log_file_at_exit(void)
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{
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fflush(stderr);
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process_log_file();
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}
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static void process_log_file_on_signal(int signo)
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{
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process_log_file();
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sigchain_pop(signo);
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raise(signo);
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}
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static int gc_config_is_timestamp_never(const char *var)
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{
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const char *value;
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timestamp_t expire;
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if (!git_config_get_value(var, &value) && value) {
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if (parse_expiry_date(value, &expire))
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die(_("failed to parse '%s' value '%s'"), var, value);
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return expire == 0;
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}
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return 0;
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}
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static void gc_config(void)
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{
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const char *value;
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if (!git_config_get_value("gc.packrefs", &value)) {
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if (value && !strcmp(value, "notbare"))
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pack_refs = -1;
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else
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pack_refs = git_config_bool("gc.packrefs", value);
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}
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if (gc_config_is_timestamp_never("gc.reflogexpire") &&
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gc_config_is_timestamp_never("gc.reflogexpireunreachable"))
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prune_reflogs = 0;
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git_config_get_int("gc.aggressivewindow", &aggressive_window);
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git_config_get_int("gc.aggressivedepth", &aggressive_depth);
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git_config_get_int("gc.auto", &gc_auto_threshold);
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git_config_get_int("gc.autopacklimit", &gc_auto_pack_limit);
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git_config_get_bool("gc.autodetach", &detach_auto);
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git_config_get_bool("gc.cruftpacks", &cruft_packs);
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git_config_get_expiry("gc.pruneexpire", &prune_expire);
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git_config_get_expiry("gc.worktreepruneexpire", &prune_worktrees_expire);
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git_config_get_expiry("gc.logexpiry", &gc_log_expire);
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git_config_get_ulong("gc.bigpackthreshold", &big_pack_threshold);
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git_config_get_ulong("pack.deltacachesize", &max_delta_cache_size);
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git_config(git_default_config, NULL);
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}
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struct maintenance_run_opts;
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static int maintenance_task_pack_refs(MAYBE_UNUSED struct maintenance_run_opts *opts)
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{
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struct strvec pack_refs_cmd = STRVEC_INIT;
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int ret;
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strvec_pushl(&pack_refs_cmd, "pack-refs", "--all", "--prune", NULL);
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ret = run_command_v_opt(pack_refs_cmd.v, RUN_GIT_CMD);
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strvec_clear(&pack_refs_cmd);
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return ret;
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}
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static int too_many_loose_objects(void)
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{
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/*
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* Quickly check if a "gc" is needed, by estimating how
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* many loose objects there are. Because SHA-1 is evenly
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* distributed, we can check only one and get a reasonable
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* estimate.
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*/
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DIR *dir;
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struct dirent *ent;
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int auto_threshold;
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int num_loose = 0;
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int needed = 0;
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const unsigned hexsz_loose = the_hash_algo->hexsz - 2;
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dir = opendir(git_path("objects/17"));
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if (!dir)
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return 0;
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auto_threshold = DIV_ROUND_UP(gc_auto_threshold, 256);
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while ((ent = readdir(dir)) != NULL) {
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if (strspn(ent->d_name, "0123456789abcdef") != hexsz_loose ||
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ent->d_name[hexsz_loose] != '\0')
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continue;
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if (++num_loose > auto_threshold) {
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needed = 1;
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break;
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}
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}
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closedir(dir);
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return needed;
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}
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static struct packed_git *find_base_packs(struct string_list *packs,
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unsigned long limit)
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{
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struct packed_git *p, *base = NULL;
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for (p = get_all_packs(the_repository); p; p = p->next) {
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if (!p->pack_local)
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continue;
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if (limit) {
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if (p->pack_size >= limit)
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string_list_append(packs, p->pack_name);
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} else if (!base || base->pack_size < p->pack_size) {
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base = p;
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}
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}
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if (base)
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string_list_append(packs, base->pack_name);
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return base;
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}
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static int too_many_packs(void)
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{
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struct packed_git *p;
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int cnt;
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if (gc_auto_pack_limit <= 0)
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return 0;
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for (cnt = 0, p = get_all_packs(the_repository); p; p = p->next) {
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if (!p->pack_local)
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continue;
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if (p->pack_keep)
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continue;
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/*
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* Perhaps check the size of the pack and count only
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* very small ones here?
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*/
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cnt++;
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}
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return gc_auto_pack_limit < cnt;
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}
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static uint64_t total_ram(void)
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{
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#if defined(HAVE_SYSINFO)
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struct sysinfo si;
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if (!sysinfo(&si))
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return si.totalram;
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#elif defined(HAVE_BSD_SYSCTL) && (defined(HW_MEMSIZE) || defined(HW_PHYSMEM))
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int64_t physical_memory;
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int mib[2];
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size_t length;
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mib[0] = CTL_HW;
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# if defined(HW_MEMSIZE)
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mib[1] = HW_MEMSIZE;
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# else
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mib[1] = HW_PHYSMEM;
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# endif
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length = sizeof(int64_t);
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if (!sysctl(mib, 2, &physical_memory, &length, NULL, 0))
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return physical_memory;
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#elif defined(GIT_WINDOWS_NATIVE)
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MEMORYSTATUSEX memInfo;
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memInfo.dwLength = sizeof(MEMORYSTATUSEX);
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if (GlobalMemoryStatusEx(&memInfo))
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return memInfo.ullTotalPhys;
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#endif
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return 0;
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}
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static uint64_t estimate_repack_memory(struct packed_git *pack)
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{
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unsigned long nr_objects = approximate_object_count();
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size_t os_cache, heap;
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if (!pack || !nr_objects)
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return 0;
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/*
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* First we have to scan through at least one pack.
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* Assume enough room in OS file cache to keep the entire pack
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* or we may accidentally evict data of other processes from
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* the cache.
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*/
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os_cache = pack->pack_size + pack->index_size;
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/* then pack-objects needs lots more for book keeping */
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heap = sizeof(struct object_entry) * nr_objects;
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/*
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* internal rev-list --all --objects takes up some memory too,
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* let's say half of it is for blobs
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*/
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heap += sizeof(struct blob) * nr_objects / 2;
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/*
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* and the other half is for trees (commits and tags are
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* usually insignificant)
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*/
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heap += sizeof(struct tree) * nr_objects / 2;
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/* and then obj_hash[], underestimated in fact */
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heap += sizeof(struct object *) * nr_objects;
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/* revindex is used also */
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heap += (sizeof(off_t) + sizeof(uint32_t)) * nr_objects;
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/*
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* read_sha1_file() (either at delta calculation phase, or
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* writing phase) also fills up the delta base cache
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*/
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heap += delta_base_cache_limit;
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/* and of course pack-objects has its own delta cache */
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heap += max_delta_cache_size;
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return os_cache + heap;
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}
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static int keep_one_pack(struct string_list_item *item, void *data)
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{
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strvec_pushf(&repack, "--keep-pack=%s", basename(item->string));
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return 0;
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}
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static void add_repack_all_option(struct string_list *keep_pack)
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{
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if (prune_expire && !strcmp(prune_expire, "now"))
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strvec_push(&repack, "-a");
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else if (cruft_packs) {
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strvec_push(&repack, "--cruft");
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if (prune_expire)
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strvec_pushf(&repack, "--cruft-expiration=%s", prune_expire);
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} else {
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strvec_push(&repack, "-A");
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if (prune_expire)
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strvec_pushf(&repack, "--unpack-unreachable=%s", prune_expire);
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}
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|
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if (keep_pack)
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for_each_string_list(keep_pack, keep_one_pack, NULL);
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}
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|
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static void add_repack_incremental_option(void)
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{
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strvec_push(&repack, "--no-write-bitmap-index");
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}
|
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static int need_to_gc(void)
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{
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/*
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* Setting gc.auto to 0 or negative can disable the
|
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* automatic gc.
|
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*/
|
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if (gc_auto_threshold <= 0)
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return 0;
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|
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/*
|
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* If there are too many loose objects, but not too many
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* packs, we run "repack -d -l". If there are too many packs,
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* we run "repack -A -d -l". Otherwise we tell the caller
|
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* there is no need.
|
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*/
|
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if (too_many_packs()) {
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||
struct string_list keep_pack = STRING_LIST_INIT_NODUP;
|
||
|
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if (big_pack_threshold) {
|
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find_base_packs(&keep_pack, big_pack_threshold);
|
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if (keep_pack.nr >= gc_auto_pack_limit) {
|
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big_pack_threshold = 0;
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string_list_clear(&keep_pack, 0);
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find_base_packs(&keep_pack, 0);
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}
|
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} else {
|
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struct packed_git *p = find_base_packs(&keep_pack, 0);
|
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uint64_t mem_have, mem_want;
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||
|
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mem_have = total_ram();
|
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mem_want = estimate_repack_memory(p);
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||
|
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/*
|
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* Only allow 1/2 of memory for pack-objects, leave
|
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* the rest for the OS and other processes in the
|
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* system.
|
||
*/
|
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if (!mem_have || mem_want < mem_have / 2)
|
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string_list_clear(&keep_pack, 0);
|
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}
|
||
|
||
add_repack_all_option(&keep_pack);
|
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string_list_clear(&keep_pack, 0);
|
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} else if (too_many_loose_objects())
|
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add_repack_incremental_option();
|
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else
|
||
return 0;
|
||
|
||
if (run_hooks("pre-auto-gc"))
|
||
return 0;
|
||
return 1;
|
||
}
|
||
|
||
/* return NULL on success, else hostname running the gc */
|
||
static const char *lock_repo_for_gc(int force, pid_t* ret_pid)
|
||
{
|
||
struct lock_file lock = LOCK_INIT;
|
||
char my_host[HOST_NAME_MAX + 1];
|
||
struct strbuf sb = STRBUF_INIT;
|
||
struct stat st;
|
||
uintmax_t pid;
|
||
FILE *fp;
|
||
int fd;
|
||
char *pidfile_path;
|
||
|
||
if (is_tempfile_active(pidfile))
|
||
/* already locked */
|
||
return NULL;
|
||
|
||
if (xgethostname(my_host, sizeof(my_host)))
|
||
xsnprintf(my_host, sizeof(my_host), "unknown");
|
||
|
||
pidfile_path = git_pathdup("gc.pid");
|
||
fd = hold_lock_file_for_update(&lock, pidfile_path,
|
||
LOCK_DIE_ON_ERROR);
|
||
if (!force) {
|
||
static char locking_host[HOST_NAME_MAX + 1];
|
||
static char *scan_fmt;
|
||
int should_exit;
|
||
|
||
if (!scan_fmt)
|
||
scan_fmt = xstrfmt("%s %%%ds", "%"SCNuMAX, HOST_NAME_MAX);
|
||
fp = fopen(pidfile_path, "r");
|
||
memset(locking_host, 0, sizeof(locking_host));
|
||
should_exit =
|
||
fp != NULL &&
|
||
!fstat(fileno(fp), &st) &&
|
||
/*
|
||
* 12 hour limit is very generous as gc should
|
||
* never take that long. On the other hand we
|
||
* don't really need a strict limit here,
|
||
* running gc --auto one day late is not a big
|
||
* problem. --force can be used in manual gc
|
||
* after the user verifies that no gc is
|
||
* running.
|
||
*/
|
||
time(NULL) - st.st_mtime <= 12 * 3600 &&
|
||
fscanf(fp, scan_fmt, &pid, locking_host) == 2 &&
|
||
/* be gentle to concurrent "gc" on remote hosts */
|
||
(strcmp(locking_host, my_host) || !kill(pid, 0) || errno == EPERM);
|
||
if (fp)
|
||
fclose(fp);
|
||
if (should_exit) {
|
||
if (fd >= 0)
|
||
rollback_lock_file(&lock);
|
||
*ret_pid = pid;
|
||
free(pidfile_path);
|
||
return locking_host;
|
||
}
|
||
}
|
||
|
||
strbuf_addf(&sb, "%"PRIuMAX" %s",
|
||
(uintmax_t) getpid(), my_host);
|
||
write_in_full(fd, sb.buf, sb.len);
|
||
strbuf_release(&sb);
|
||
commit_lock_file(&lock);
|
||
pidfile = register_tempfile(pidfile_path);
|
||
free(pidfile_path);
|
||
return NULL;
|
||
}
|
||
|
||
/*
|
||
* Returns 0 if there was no previous error and gc can proceed, 1 if
|
||
* gc should not proceed due to an error in the last run. Prints a
|
||
* message and returns with a non-[01] status code if an error occurred
|
||
* while reading gc.log
|
||
*/
|
||
static int report_last_gc_error(void)
|
||
{
|
||
struct strbuf sb = STRBUF_INIT;
|
||
int ret = 0;
|
||
ssize_t len;
|
||
struct stat st;
|
||
char *gc_log_path = git_pathdup("gc.log");
|
||
|
||
if (stat(gc_log_path, &st)) {
|
||
if (errno == ENOENT)
|
||
goto done;
|
||
|
||
ret = die_message_errno(_("cannot stat '%s'"), gc_log_path);
|
||
goto done;
|
||
}
|
||
|
||
if (st.st_mtime < gc_log_expire_time)
|
||
goto done;
|
||
|
||
len = strbuf_read_file(&sb, gc_log_path, 0);
|
||
if (len < 0)
|
||
ret = die_message_errno(_("cannot read '%s'"), gc_log_path);
|
||
else if (len > 0) {
|
||
/*
|
||
* A previous gc failed. Report the error, and don't
|
||
* bother with an automatic gc run since it is likely
|
||
* to fail in the same way.
|
||
*/
|
||
warning(_("The last gc run reported the following. "
|
||
"Please correct the root cause\n"
|
||
"and remove %s\n"
|
||
"Automatic cleanup will not be performed "
|
||
"until the file is removed.\n\n"
|
||
"%s"),
|
||
gc_log_path, sb.buf);
|
||
ret = 1;
|
||
}
|
||
strbuf_release(&sb);
|
||
done:
|
||
free(gc_log_path);
|
||
return ret;
|
||
}
|
||
|
||
static void gc_before_repack(void)
|
||
{
|
||
/*
|
||
* We may be called twice, as both the pre- and
|
||
* post-daemonized phases will call us, but running these
|
||
* commands more than once is pointless and wasteful.
|
||
*/
|
||
static int done = 0;
|
||
if (done++)
|
||
return;
|
||
|
||
if (pack_refs && maintenance_task_pack_refs(NULL))
|
||
die(FAILED_RUN, "pack-refs");
|
||
|
||
if (prune_reflogs && run_command_v_opt(reflog.v, RUN_GIT_CMD))
|
||
die(FAILED_RUN, reflog.v[0]);
|
||
}
|
||
|
||
int cmd_gc(int argc, const char **argv, const char *prefix)
|
||
{
|
||
int aggressive = 0;
|
||
int auto_gc = 0;
|
||
int quiet = 0;
|
||
int force = 0;
|
||
const char *name;
|
||
pid_t pid;
|
||
int daemonized = 0;
|
||
int keep_largest_pack = -1;
|
||
timestamp_t dummy;
|
||
|
||
struct option builtin_gc_options[] = {
|
||
OPT__QUIET(&quiet, N_("suppress progress reporting")),
|
||
{ OPTION_STRING, 0, "prune", &prune_expire, N_("date"),
|
||
N_("prune unreferenced objects"),
|
||
PARSE_OPT_OPTARG, NULL, (intptr_t)prune_expire },
|
||
OPT_BOOL(0, "cruft", &cruft_packs, N_("pack unreferenced objects separately")),
|
||
OPT_BOOL(0, "aggressive", &aggressive, N_("be more thorough (increased runtime)")),
|
||
OPT_BOOL_F(0, "auto", &auto_gc, N_("enable auto-gc mode"),
|
||
PARSE_OPT_NOCOMPLETE),
|
||
OPT_BOOL_F(0, "force", &force,
|
||
N_("force running gc even if there may be another gc running"),
|
||
PARSE_OPT_NOCOMPLETE),
|
||
OPT_BOOL(0, "keep-largest-pack", &keep_largest_pack,
|
||
N_("repack all other packs except the largest pack")),
|
||
OPT_END()
|
||
};
|
||
|
||
if (argc == 2 && !strcmp(argv[1], "-h"))
|
||
usage_with_options(builtin_gc_usage, builtin_gc_options);
|
||
|
||
strvec_pushl(&reflog, "reflog", "expire", "--all", NULL);
|
||
strvec_pushl(&repack, "repack", "-d", "-l", NULL);
|
||
strvec_pushl(&prune, "prune", "--expire", NULL);
|
||
strvec_pushl(&prune_worktrees, "worktree", "prune", "--expire", NULL);
|
||
strvec_pushl(&rerere, "rerere", "gc", NULL);
|
||
|
||
/* default expiry time, overwritten in gc_config */
|
||
gc_config();
|
||
if (parse_expiry_date(gc_log_expire, &gc_log_expire_time))
|
||
die(_("failed to parse gc.logExpiry value %s"), gc_log_expire);
|
||
|
||
if (pack_refs < 0)
|
||
pack_refs = !is_bare_repository();
|
||
|
||
argc = parse_options(argc, argv, prefix, builtin_gc_options,
|
||
builtin_gc_usage, 0);
|
||
if (argc > 0)
|
||
usage_with_options(builtin_gc_usage, builtin_gc_options);
|
||
|
||
if (prune_expire && parse_expiry_date(prune_expire, &dummy))
|
||
die(_("failed to parse prune expiry value %s"), prune_expire);
|
||
|
||
if (aggressive) {
|
||
strvec_push(&repack, "-f");
|
||
if (aggressive_depth > 0)
|
||
strvec_pushf(&repack, "--depth=%d", aggressive_depth);
|
||
if (aggressive_window > 0)
|
||
strvec_pushf(&repack, "--window=%d", aggressive_window);
|
||
}
|
||
if (quiet)
|
||
strvec_push(&repack, "-q");
|
||
|
||
if (auto_gc) {
|
||
/*
|
||
* Auto-gc should be least intrusive as possible.
|
||
*/
|
||
if (!need_to_gc())
|
||
return 0;
|
||
if (!quiet) {
|
||
if (detach_auto)
|
||
fprintf(stderr, _("Auto packing the repository in background for optimum performance.\n"));
|
||
else
|
||
fprintf(stderr, _("Auto packing the repository for optimum performance.\n"));
|
||
fprintf(stderr, _("See \"git help gc\" for manual housekeeping.\n"));
|
||
}
|
||
if (detach_auto) {
|
||
int ret = report_last_gc_error();
|
||
|
||
if (ret == 1)
|
||
/* Last gc --auto failed. Skip this one. */
|
||
return 0;
|
||
else if (ret)
|
||
/* an I/O error occurred, already reported */
|
||
return ret;
|
||
|
||
if (lock_repo_for_gc(force, &pid))
|
||
return 0;
|
||
gc_before_repack(); /* dies on failure */
|
||
delete_tempfile(&pidfile);
|
||
|
||
/*
|
||
* failure to daemonize is ok, we'll continue
|
||
* in foreground
|
||
*/
|
||
daemonized = !daemonize();
|
||
}
|
||
} else {
|
||
struct string_list keep_pack = STRING_LIST_INIT_NODUP;
|
||
|
||
if (keep_largest_pack != -1) {
|
||
if (keep_largest_pack)
|
||
find_base_packs(&keep_pack, 0);
|
||
} else if (big_pack_threshold) {
|
||
find_base_packs(&keep_pack, big_pack_threshold);
|
||
}
|
||
|
||
add_repack_all_option(&keep_pack);
|
||
string_list_clear(&keep_pack, 0);
|
||
}
|
||
|
||
name = lock_repo_for_gc(force, &pid);
|
||
if (name) {
|
||
if (auto_gc)
|
||
return 0; /* be quiet on --auto */
|
||
die(_("gc is already running on machine '%s' pid %"PRIuMAX" (use --force if not)"),
|
||
name, (uintmax_t)pid);
|
||
}
|
||
|
||
if (daemonized) {
|
||
hold_lock_file_for_update(&log_lock,
|
||
git_path("gc.log"),
|
||
LOCK_DIE_ON_ERROR);
|
||
dup2(get_lock_file_fd(&log_lock), 2);
|
||
sigchain_push_common(process_log_file_on_signal);
|
||
atexit(process_log_file_at_exit);
|
||
}
|
||
|
||
gc_before_repack();
|
||
|
||
if (!repository_format_precious_objects) {
|
||
if (run_command_v_opt(repack.v,
|
||
RUN_GIT_CMD | RUN_CLOSE_OBJECT_STORE))
|
||
die(FAILED_RUN, repack.v[0]);
|
||
|
||
if (prune_expire) {
|
||
/* run `git prune` even if using cruft packs */
|
||
strvec_push(&prune, prune_expire);
|
||
if (quiet)
|
||
strvec_push(&prune, "--no-progress");
|
||
if (has_promisor_remote())
|
||
strvec_push(&prune,
|
||
"--exclude-promisor-objects");
|
||
if (run_command_v_opt(prune.v, RUN_GIT_CMD))
|
||
die(FAILED_RUN, prune.v[0]);
|
||
}
|
||
}
|
||
|
||
if (prune_worktrees_expire) {
|
||
strvec_push(&prune_worktrees, prune_worktrees_expire);
|
||
if (run_command_v_opt(prune_worktrees.v, RUN_GIT_CMD))
|
||
die(FAILED_RUN, prune_worktrees.v[0]);
|
||
}
|
||
|
||
if (run_command_v_opt(rerere.v, RUN_GIT_CMD))
|
||
die(FAILED_RUN, rerere.v[0]);
|
||
|
||
report_garbage = report_pack_garbage;
|
||
reprepare_packed_git(the_repository);
|
||
if (pack_garbage.nr > 0) {
|
||
close_object_store(the_repository->objects);
|
||
clean_pack_garbage();
|
||
}
|
||
|
||
prepare_repo_settings(the_repository);
|
||
if (the_repository->settings.gc_write_commit_graph == 1)
|
||
write_commit_graph_reachable(the_repository->objects->odb,
|
||
!quiet && !daemonized ? COMMIT_GRAPH_WRITE_PROGRESS : 0,
|
||
NULL);
|
||
|
||
if (auto_gc && too_many_loose_objects())
|
||
warning(_("There are too many unreachable loose objects; "
|
||
"run 'git prune' to remove them."));
|
||
|
||
if (!daemonized)
|
||
unlink(git_path("gc.log"));
|
||
|
||
return 0;
|
||
}
|
||
|
||
static const char *const builtin_maintenance_run_usage[] = {
|
||
N_("git maintenance run [--auto] [--[no-]quiet] [--task=<task>] [--schedule]"),
|
||
NULL
|
||
};
|
||
|
||
enum schedule_priority {
|
||
SCHEDULE_NONE = 0,
|
||
SCHEDULE_WEEKLY = 1,
|
||
SCHEDULE_DAILY = 2,
|
||
SCHEDULE_HOURLY = 3,
|
||
};
|
||
|
||
static enum schedule_priority parse_schedule(const char *value)
|
||
{
|
||
if (!value)
|
||
return SCHEDULE_NONE;
|
||
if (!strcasecmp(value, "hourly"))
|
||
return SCHEDULE_HOURLY;
|
||
if (!strcasecmp(value, "daily"))
|
||
return SCHEDULE_DAILY;
|
||
if (!strcasecmp(value, "weekly"))
|
||
return SCHEDULE_WEEKLY;
|
||
return SCHEDULE_NONE;
|
||
}
|
||
|
||
static int maintenance_opt_schedule(const struct option *opt, const char *arg,
|
||
int unset)
|
||
{
|
||
enum schedule_priority *priority = opt->value;
|
||
|
||
if (unset)
|
||
die(_("--no-schedule is not allowed"));
|
||
|
||
*priority = parse_schedule(arg);
|
||
|
||
if (!*priority)
|
||
die(_("unrecognized --schedule argument '%s'"), arg);
|
||
|
||
return 0;
|
||
}
|
||
|
||
struct maintenance_run_opts {
|
||
int auto_flag;
|
||
int quiet;
|
||
enum schedule_priority schedule;
|
||
};
|
||
|
||
/* Remember to update object flag allocation in object.h */
|
||
#define SEEN (1u<<0)
|
||
|
||
struct cg_auto_data {
|
||
int num_not_in_graph;
|
||
int limit;
|
||
};
|
||
|
||
static int dfs_on_ref(const char *refname,
|
||
const struct object_id *oid, int flags,
|
||
void *cb_data)
|
||
{
|
||
struct cg_auto_data *data = (struct cg_auto_data *)cb_data;
|
||
int result = 0;
|
||
struct object_id peeled;
|
||
struct commit_list *stack = NULL;
|
||
struct commit *commit;
|
||
|
||
if (!peel_iterated_oid(oid, &peeled))
|
||
oid = &peeled;
|
||
if (oid_object_info(the_repository, oid, NULL) != OBJ_COMMIT)
|
||
return 0;
|
||
|
||
commit = lookup_commit(the_repository, oid);
|
||
if (!commit)
|
||
return 0;
|
||
if (parse_commit(commit) ||
|
||
commit_graph_position(commit) != COMMIT_NOT_FROM_GRAPH)
|
||
return 0;
|
||
|
||
data->num_not_in_graph++;
|
||
|
||
if (data->num_not_in_graph >= data->limit)
|
||
return 1;
|
||
|
||
commit_list_append(commit, &stack);
|
||
|
||
while (!result && stack) {
|
||
struct commit_list *parent;
|
||
|
||
commit = pop_commit(&stack);
|
||
|
||
for (parent = commit->parents; parent; parent = parent->next) {
|
||
if (parse_commit(parent->item) ||
|
||
commit_graph_position(parent->item) != COMMIT_NOT_FROM_GRAPH ||
|
||
parent->item->object.flags & SEEN)
|
||
continue;
|
||
|
||
parent->item->object.flags |= SEEN;
|
||
data->num_not_in_graph++;
|
||
|
||
if (data->num_not_in_graph >= data->limit) {
|
||
result = 1;
|
||
break;
|
||
}
|
||
|
||
commit_list_append(parent->item, &stack);
|
||
}
|
||
}
|
||
|
||
free_commit_list(stack);
|
||
return result;
|
||
}
|
||
|
||
static int should_write_commit_graph(void)
|
||
{
|
||
int result;
|
||
struct cg_auto_data data;
|
||
|
||
data.num_not_in_graph = 0;
|
||
data.limit = 100;
|
||
git_config_get_int("maintenance.commit-graph.auto",
|
||
&data.limit);
|
||
|
||
if (!data.limit)
|
||
return 0;
|
||
if (data.limit < 0)
|
||
return 1;
|
||
|
||
result = for_each_ref(dfs_on_ref, &data);
|
||
|
||
repo_clear_commit_marks(the_repository, SEEN);
|
||
|
||
return result;
|
||
}
|
||
|
||
static int run_write_commit_graph(struct maintenance_run_opts *opts)
|
||
{
|
||
struct child_process child = CHILD_PROCESS_INIT;
|
||
|
||
child.git_cmd = child.close_object_store = 1;
|
||
strvec_pushl(&child.args, "commit-graph", "write",
|
||
"--split", "--reachable", NULL);
|
||
|
||
if (opts->quiet)
|
||
strvec_push(&child.args, "--no-progress");
|
||
|
||
return !!run_command(&child);
|
||
}
|
||
|
||
static int maintenance_task_commit_graph(struct maintenance_run_opts *opts)
|
||
{
|
||
prepare_repo_settings(the_repository);
|
||
if (!the_repository->settings.core_commit_graph)
|
||
return 0;
|
||
|
||
if (run_write_commit_graph(opts)) {
|
||
error(_("failed to write commit-graph"));
|
||
return 1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int fetch_remote(struct remote *remote, void *cbdata)
|
||
{
|
||
struct maintenance_run_opts *opts = cbdata;
|
||
struct child_process child = CHILD_PROCESS_INIT;
|
||
|
||
if (remote->skip_default_update)
|
||
return 0;
|
||
|
||
child.git_cmd = 1;
|
||
strvec_pushl(&child.args, "fetch", remote->name,
|
||
"--prefetch", "--prune", "--no-tags",
|
||
"--no-write-fetch-head", "--recurse-submodules=no",
|
||
NULL);
|
||
|
||
if (opts->quiet)
|
||
strvec_push(&child.args, "--quiet");
|
||
|
||
return !!run_command(&child);
|
||
}
|
||
|
||
static int maintenance_task_prefetch(struct maintenance_run_opts *opts)
|
||
{
|
||
if (for_each_remote(fetch_remote, opts)) {
|
||
error(_("failed to prefetch remotes"));
|
||
return 1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int maintenance_task_gc(struct maintenance_run_opts *opts)
|
||
{
|
||
struct child_process child = CHILD_PROCESS_INIT;
|
||
|
||
child.git_cmd = child.close_object_store = 1;
|
||
strvec_push(&child.args, "gc");
|
||
|
||
if (opts->auto_flag)
|
||
strvec_push(&child.args, "--auto");
|
||
if (opts->quiet)
|
||
strvec_push(&child.args, "--quiet");
|
||
else
|
||
strvec_push(&child.args, "--no-quiet");
|
||
|
||
return run_command(&child);
|
||
}
|
||
|
||
static int prune_packed(struct maintenance_run_opts *opts)
|
||
{
|
||
struct child_process child = CHILD_PROCESS_INIT;
|
||
|
||
child.git_cmd = 1;
|
||
strvec_push(&child.args, "prune-packed");
|
||
|
||
if (opts->quiet)
|
||
strvec_push(&child.args, "--quiet");
|
||
|
||
return !!run_command(&child);
|
||
}
|
||
|
||
struct write_loose_object_data {
|
||
FILE *in;
|
||
int count;
|
||
int batch_size;
|
||
};
|
||
|
||
static int loose_object_auto_limit = 100;
|
||
|
||
static int loose_object_count(const struct object_id *oid,
|
||
const char *path,
|
||
void *data)
|
||
{
|
||
int *count = (int*)data;
|
||
if (++(*count) >= loose_object_auto_limit)
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
static int loose_object_auto_condition(void)
|
||
{
|
||
int count = 0;
|
||
|
||
git_config_get_int("maintenance.loose-objects.auto",
|
||
&loose_object_auto_limit);
|
||
|
||
if (!loose_object_auto_limit)
|
||
return 0;
|
||
if (loose_object_auto_limit < 0)
|
||
return 1;
|
||
|
||
return for_each_loose_file_in_objdir(the_repository->objects->odb->path,
|
||
loose_object_count,
|
||
NULL, NULL, &count);
|
||
}
|
||
|
||
static int bail_on_loose(const struct object_id *oid,
|
||
const char *path,
|
||
void *data)
|
||
{
|
||
return 1;
|
||
}
|
||
|
||
static int write_loose_object_to_stdin(const struct object_id *oid,
|
||
const char *path,
|
||
void *data)
|
||
{
|
||
struct write_loose_object_data *d = (struct write_loose_object_data *)data;
|
||
|
||
fprintf(d->in, "%s\n", oid_to_hex(oid));
|
||
|
||
return ++(d->count) > d->batch_size;
|
||
}
|
||
|
||
static int pack_loose(struct maintenance_run_opts *opts)
|
||
{
|
||
struct repository *r = the_repository;
|
||
int result = 0;
|
||
struct write_loose_object_data data;
|
||
struct child_process pack_proc = CHILD_PROCESS_INIT;
|
||
|
||
/*
|
||
* Do not start pack-objects process
|
||
* if there are no loose objects.
|
||
*/
|
||
if (!for_each_loose_file_in_objdir(r->objects->odb->path,
|
||
bail_on_loose,
|
||
NULL, NULL, NULL))
|
||
return 0;
|
||
|
||
pack_proc.git_cmd = 1;
|
||
|
||
strvec_push(&pack_proc.args, "pack-objects");
|
||
if (opts->quiet)
|
||
strvec_push(&pack_proc.args, "--quiet");
|
||
strvec_pushf(&pack_proc.args, "%s/pack/loose", r->objects->odb->path);
|
||
|
||
pack_proc.in = -1;
|
||
|
||
if (start_command(&pack_proc)) {
|
||
error(_("failed to start 'git pack-objects' process"));
|
||
return 1;
|
||
}
|
||
|
||
data.in = xfdopen(pack_proc.in, "w");
|
||
data.count = 0;
|
||
data.batch_size = 50000;
|
||
|
||
for_each_loose_file_in_objdir(r->objects->odb->path,
|
||
write_loose_object_to_stdin,
|
||
NULL,
|
||
NULL,
|
||
&data);
|
||
|
||
fclose(data.in);
|
||
|
||
if (finish_command(&pack_proc)) {
|
||
error(_("failed to finish 'git pack-objects' process"));
|
||
result = 1;
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
static int maintenance_task_loose_objects(struct maintenance_run_opts *opts)
|
||
{
|
||
return prune_packed(opts) || pack_loose(opts);
|
||
}
|
||
|
||
static int incremental_repack_auto_condition(void)
|
||
{
|
||
struct packed_git *p;
|
||
int incremental_repack_auto_limit = 10;
|
||
int count = 0;
|
||
|
||
prepare_repo_settings(the_repository);
|
||
if (!the_repository->settings.core_multi_pack_index)
|
||
return 0;
|
||
|
||
git_config_get_int("maintenance.incremental-repack.auto",
|
||
&incremental_repack_auto_limit);
|
||
|
||
if (!incremental_repack_auto_limit)
|
||
return 0;
|
||
if (incremental_repack_auto_limit < 0)
|
||
return 1;
|
||
|
||
for (p = get_packed_git(the_repository);
|
||
count < incremental_repack_auto_limit && p;
|
||
p = p->next) {
|
||
if (!p->multi_pack_index)
|
||
count++;
|
||
}
|
||
|
||
return count >= incremental_repack_auto_limit;
|
||
}
|
||
|
||
static int multi_pack_index_write(struct maintenance_run_opts *opts)
|
||
{
|
||
struct child_process child = CHILD_PROCESS_INIT;
|
||
|
||
child.git_cmd = 1;
|
||
strvec_pushl(&child.args, "multi-pack-index", "write", NULL);
|
||
|
||
if (opts->quiet)
|
||
strvec_push(&child.args, "--no-progress");
|
||
|
||
if (run_command(&child))
|
||
return error(_("failed to write multi-pack-index"));
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int multi_pack_index_expire(struct maintenance_run_opts *opts)
|
||
{
|
||
struct child_process child = CHILD_PROCESS_INIT;
|
||
|
||
child.git_cmd = child.close_object_store = 1;
|
||
strvec_pushl(&child.args, "multi-pack-index", "expire", NULL);
|
||
|
||
if (opts->quiet)
|
||
strvec_push(&child.args, "--no-progress");
|
||
|
||
if (run_command(&child))
|
||
return error(_("'git multi-pack-index expire' failed"));
|
||
|
||
return 0;
|
||
}
|
||
|
||
#define TWO_GIGABYTES (INT32_MAX)
|
||
|
||
static off_t get_auto_pack_size(void)
|
||
{
|
||
/*
|
||
* The "auto" value is special: we optimize for
|
||
* one large pack-file (i.e. from a clone) and
|
||
* expect the rest to be small and they can be
|
||
* repacked quickly.
|
||
*
|
||
* The strategy we select here is to select a
|
||
* size that is one more than the second largest
|
||
* pack-file. This ensures that we will repack
|
||
* at least two packs if there are three or more
|
||
* packs.
|
||
*/
|
||
off_t max_size = 0;
|
||
off_t second_largest_size = 0;
|
||
off_t result_size;
|
||
struct packed_git *p;
|
||
struct repository *r = the_repository;
|
||
|
||
reprepare_packed_git(r);
|
||
for (p = get_all_packs(r); p; p = p->next) {
|
||
if (p->pack_size > max_size) {
|
||
second_largest_size = max_size;
|
||
max_size = p->pack_size;
|
||
} else if (p->pack_size > second_largest_size)
|
||
second_largest_size = p->pack_size;
|
||
}
|
||
|
||
result_size = second_largest_size + 1;
|
||
|
||
/* But limit ourselves to a batch size of 2g */
|
||
if (result_size > TWO_GIGABYTES)
|
||
result_size = TWO_GIGABYTES;
|
||
|
||
return result_size;
|
||
}
|
||
|
||
static int multi_pack_index_repack(struct maintenance_run_opts *opts)
|
||
{
|
||
struct child_process child = CHILD_PROCESS_INIT;
|
||
|
||
child.git_cmd = child.close_object_store = 1;
|
||
strvec_pushl(&child.args, "multi-pack-index", "repack", NULL);
|
||
|
||
if (opts->quiet)
|
||
strvec_push(&child.args, "--no-progress");
|
||
|
||
strvec_pushf(&child.args, "--batch-size=%"PRIuMAX,
|
||
(uintmax_t)get_auto_pack_size());
|
||
|
||
if (run_command(&child))
|
||
return error(_("'git multi-pack-index repack' failed"));
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int maintenance_task_incremental_repack(struct maintenance_run_opts *opts)
|
||
{
|
||
prepare_repo_settings(the_repository);
|
||
if (!the_repository->settings.core_multi_pack_index) {
|
||
warning(_("skipping incremental-repack task because core.multiPackIndex is disabled"));
|
||
return 0;
|
||
}
|
||
|
||
if (multi_pack_index_write(opts))
|
||
return 1;
|
||
if (multi_pack_index_expire(opts))
|
||
return 1;
|
||
if (multi_pack_index_repack(opts))
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
typedef int maintenance_task_fn(struct maintenance_run_opts *opts);
|
||
|
||
/*
|
||
* An auto condition function returns 1 if the task should run
|
||
* and 0 if the task should NOT run. See needs_to_gc() for an
|
||
* example.
|
||
*/
|
||
typedef int maintenance_auto_fn(void);
|
||
|
||
struct maintenance_task {
|
||
const char *name;
|
||
maintenance_task_fn *fn;
|
||
maintenance_auto_fn *auto_condition;
|
||
unsigned enabled:1;
|
||
|
||
enum schedule_priority schedule;
|
||
|
||
/* -1 if not selected. */
|
||
int selected_order;
|
||
};
|
||
|
||
enum maintenance_task_label {
|
||
TASK_PREFETCH,
|
||
TASK_LOOSE_OBJECTS,
|
||
TASK_INCREMENTAL_REPACK,
|
||
TASK_GC,
|
||
TASK_COMMIT_GRAPH,
|
||
TASK_PACK_REFS,
|
||
|
||
/* Leave as final value */
|
||
TASK__COUNT
|
||
};
|
||
|
||
static struct maintenance_task tasks[] = {
|
||
[TASK_PREFETCH] = {
|
||
"prefetch",
|
||
maintenance_task_prefetch,
|
||
},
|
||
[TASK_LOOSE_OBJECTS] = {
|
||
"loose-objects",
|
||
maintenance_task_loose_objects,
|
||
loose_object_auto_condition,
|
||
},
|
||
[TASK_INCREMENTAL_REPACK] = {
|
||
"incremental-repack",
|
||
maintenance_task_incremental_repack,
|
||
incremental_repack_auto_condition,
|
||
},
|
||
[TASK_GC] = {
|
||
"gc",
|
||
maintenance_task_gc,
|
||
need_to_gc,
|
||
1,
|
||
},
|
||
[TASK_COMMIT_GRAPH] = {
|
||
"commit-graph",
|
||
maintenance_task_commit_graph,
|
||
should_write_commit_graph,
|
||
},
|
||
[TASK_PACK_REFS] = {
|
||
"pack-refs",
|
||
maintenance_task_pack_refs,
|
||
NULL,
|
||
},
|
||
};
|
||
|
||
static int compare_tasks_by_selection(const void *a_, const void *b_)
|
||
{
|
||
const struct maintenance_task *a = a_;
|
||
const struct maintenance_task *b = b_;
|
||
|
||
return b->selected_order - a->selected_order;
|
||
}
|
||
|
||
static int maintenance_run_tasks(struct maintenance_run_opts *opts)
|
||
{
|
||
int i, found_selected = 0;
|
||
int result = 0;
|
||
struct lock_file lk;
|
||
struct repository *r = the_repository;
|
||
char *lock_path = xstrfmt("%s/maintenance", r->objects->odb->path);
|
||
|
||
if (hold_lock_file_for_update(&lk, lock_path, LOCK_NO_DEREF) < 0) {
|
||
/*
|
||
* Another maintenance command is running.
|
||
*
|
||
* If --auto was provided, then it is likely due to a
|
||
* recursive process stack. Do not report an error in
|
||
* that case.
|
||
*/
|
||
if (!opts->auto_flag && !opts->quiet)
|
||
warning(_("lock file '%s' exists, skipping maintenance"),
|
||
lock_path);
|
||
free(lock_path);
|
||
return 0;
|
||
}
|
||
free(lock_path);
|
||
|
||
for (i = 0; !found_selected && i < TASK__COUNT; i++)
|
||
found_selected = tasks[i].selected_order >= 0;
|
||
|
||
if (found_selected)
|
||
QSORT(tasks, TASK__COUNT, compare_tasks_by_selection);
|
||
|
||
for (i = 0; i < TASK__COUNT; i++) {
|
||
if (found_selected && tasks[i].selected_order < 0)
|
||
continue;
|
||
|
||
if (!found_selected && !tasks[i].enabled)
|
||
continue;
|
||
|
||
if (opts->auto_flag &&
|
||
(!tasks[i].auto_condition ||
|
||
!tasks[i].auto_condition()))
|
||
continue;
|
||
|
||
if (opts->schedule && tasks[i].schedule < opts->schedule)
|
||
continue;
|
||
|
||
trace2_region_enter("maintenance", tasks[i].name, r);
|
||
if (tasks[i].fn(opts)) {
|
||
error(_("task '%s' failed"), tasks[i].name);
|
||
result = 1;
|
||
}
|
||
trace2_region_leave("maintenance", tasks[i].name, r);
|
||
}
|
||
|
||
rollback_lock_file(&lk);
|
||
return result;
|
||
}
|
||
|
||
static void initialize_maintenance_strategy(void)
|
||
{
|
||
char *config_str;
|
||
|
||
if (git_config_get_string("maintenance.strategy", &config_str))
|
||
return;
|
||
|
||
if (!strcasecmp(config_str, "incremental")) {
|
||
tasks[TASK_GC].schedule = SCHEDULE_NONE;
|
||
tasks[TASK_COMMIT_GRAPH].enabled = 1;
|
||
tasks[TASK_COMMIT_GRAPH].schedule = SCHEDULE_HOURLY;
|
||
tasks[TASK_PREFETCH].enabled = 1;
|
||
tasks[TASK_PREFETCH].schedule = SCHEDULE_HOURLY;
|
||
tasks[TASK_INCREMENTAL_REPACK].enabled = 1;
|
||
tasks[TASK_INCREMENTAL_REPACK].schedule = SCHEDULE_DAILY;
|
||
tasks[TASK_LOOSE_OBJECTS].enabled = 1;
|
||
tasks[TASK_LOOSE_OBJECTS].schedule = SCHEDULE_DAILY;
|
||
tasks[TASK_PACK_REFS].enabled = 1;
|
||
tasks[TASK_PACK_REFS].schedule = SCHEDULE_WEEKLY;
|
||
}
|
||
}
|
||
|
||
static void initialize_task_config(int schedule)
|
||
{
|
||
int i;
|
||
struct strbuf config_name = STRBUF_INIT;
|
||
gc_config();
|
||
|
||
if (schedule)
|
||
initialize_maintenance_strategy();
|
||
|
||
for (i = 0; i < TASK__COUNT; i++) {
|
||
int config_value;
|
||
char *config_str;
|
||
|
||
strbuf_reset(&config_name);
|
||
strbuf_addf(&config_name, "maintenance.%s.enabled",
|
||
tasks[i].name);
|
||
|
||
if (!git_config_get_bool(config_name.buf, &config_value))
|
||
tasks[i].enabled = config_value;
|
||
|
||
strbuf_reset(&config_name);
|
||
strbuf_addf(&config_name, "maintenance.%s.schedule",
|
||
tasks[i].name);
|
||
|
||
if (!git_config_get_string(config_name.buf, &config_str)) {
|
||
tasks[i].schedule = parse_schedule(config_str);
|
||
free(config_str);
|
||
}
|
||
}
|
||
|
||
strbuf_release(&config_name);
|
||
}
|
||
|
||
static int task_option_parse(const struct option *opt,
|
||
const char *arg, int unset)
|
||
{
|
||
int i, num_selected = 0;
|
||
struct maintenance_task *task = NULL;
|
||
|
||
BUG_ON_OPT_NEG(unset);
|
||
|
||
for (i = 0; i < TASK__COUNT; i++) {
|
||
if (tasks[i].selected_order >= 0)
|
||
num_selected++;
|
||
if (!strcasecmp(tasks[i].name, arg)) {
|
||
task = &tasks[i];
|
||
}
|
||
}
|
||
|
||
if (!task) {
|
||
error(_("'%s' is not a valid task"), arg);
|
||
return 1;
|
||
}
|
||
|
||
if (task->selected_order >= 0) {
|
||
error(_("task '%s' cannot be selected multiple times"), arg);
|
||
return 1;
|
||
}
|
||
|
||
task->selected_order = num_selected + 1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int maintenance_run(int argc, const char **argv, const char *prefix)
|
||
{
|
||
int i;
|
||
struct maintenance_run_opts opts;
|
||
struct option builtin_maintenance_run_options[] = {
|
||
OPT_BOOL(0, "auto", &opts.auto_flag,
|
||
N_("run tasks based on the state of the repository")),
|
||
OPT_CALLBACK(0, "schedule", &opts.schedule, N_("frequency"),
|
||
N_("run tasks based on frequency"),
|
||
maintenance_opt_schedule),
|
||
OPT_BOOL(0, "quiet", &opts.quiet,
|
||
N_("do not report progress or other information over stderr")),
|
||
OPT_CALLBACK_F(0, "task", NULL, N_("task"),
|
||
N_("run a specific task"),
|
||
PARSE_OPT_NONEG, task_option_parse),
|
||
OPT_END()
|
||
};
|
||
memset(&opts, 0, sizeof(opts));
|
||
|
||
opts.quiet = !isatty(2);
|
||
|
||
for (i = 0; i < TASK__COUNT; i++)
|
||
tasks[i].selected_order = -1;
|
||
|
||
argc = parse_options(argc, argv, prefix,
|
||
builtin_maintenance_run_options,
|
||
builtin_maintenance_run_usage,
|
||
PARSE_OPT_STOP_AT_NON_OPTION);
|
||
|
||
if (opts.auto_flag && opts.schedule)
|
||
die(_("use at most one of --auto and --schedule=<frequency>"));
|
||
|
||
initialize_task_config(opts.schedule);
|
||
|
||
if (argc != 0)
|
||
usage_with_options(builtin_maintenance_run_usage,
|
||
builtin_maintenance_run_options);
|
||
return maintenance_run_tasks(&opts);
|
||
}
|
||
|
||
static char *get_maintpath(void)
|
||
{
|
||
struct strbuf sb = STRBUF_INIT;
|
||
const char *p = the_repository->worktree ?
|
||
the_repository->worktree : the_repository->gitdir;
|
||
|
||
strbuf_realpath(&sb, p, 1);
|
||
return strbuf_detach(&sb, NULL);
|
||
}
|
||
|
||
static char const * const builtin_maintenance_register_usage[] = {
|
||
N_("git maintenance register"),
|
||
NULL
|
||
};
|
||
|
||
static int maintenance_register(int argc, const char **argv, const char *prefix)
|
||
{
|
||
struct option options[] = {
|
||
OPT_END(),
|
||
};
|
||
int rc;
|
||
char *config_value;
|
||
struct child_process config_set = CHILD_PROCESS_INIT;
|
||
struct child_process config_get = CHILD_PROCESS_INIT;
|
||
char *maintpath = get_maintpath();
|
||
|
||
argc = parse_options(argc, argv, prefix, options,
|
||
builtin_maintenance_register_usage, 0);
|
||
if (argc)
|
||
usage_with_options(builtin_maintenance_register_usage,
|
||
options);
|
||
|
||
/* Disable foreground maintenance */
|
||
git_config_set("maintenance.auto", "false");
|
||
|
||
/* Set maintenance strategy, if unset */
|
||
if (!git_config_get_string("maintenance.strategy", &config_value))
|
||
free(config_value);
|
||
else
|
||
git_config_set("maintenance.strategy", "incremental");
|
||
|
||
config_get.git_cmd = 1;
|
||
strvec_pushl(&config_get.args, "config", "--global", "--get",
|
||
"--fixed-value", "maintenance.repo", maintpath, NULL);
|
||
config_get.out = -1;
|
||
|
||
if (start_command(&config_get)) {
|
||
rc = error(_("failed to run 'git config'"));
|
||
goto done;
|
||
}
|
||
|
||
/* We already have this value in our config! */
|
||
if (!finish_command(&config_get)) {
|
||
rc = 0;
|
||
goto done;
|
||
}
|
||
|
||
config_set.git_cmd = 1;
|
||
strvec_pushl(&config_set.args, "config", "--add", "--global", "maintenance.repo",
|
||
maintpath, NULL);
|
||
|
||
rc = run_command(&config_set);
|
||
|
||
done:
|
||
free(maintpath);
|
||
return rc;
|
||
}
|
||
|
||
static char const * const builtin_maintenance_unregister_usage[] = {
|
||
N_("git maintenance unregister"),
|
||
NULL
|
||
};
|
||
|
||
static int maintenance_unregister(int argc, const char **argv, const char *prefix)
|
||
{
|
||
struct option options[] = {
|
||
OPT_END(),
|
||
};
|
||
int rc;
|
||
struct child_process config_unset = CHILD_PROCESS_INIT;
|
||
char *maintpath = get_maintpath();
|
||
|
||
argc = parse_options(argc, argv, prefix, options,
|
||
builtin_maintenance_unregister_usage, 0);
|
||
if (argc)
|
||
usage_with_options(builtin_maintenance_unregister_usage,
|
||
options);
|
||
|
||
config_unset.git_cmd = 1;
|
||
strvec_pushl(&config_unset.args, "config", "--global", "--unset",
|
||
"--fixed-value", "maintenance.repo", maintpath, NULL);
|
||
|
||
rc = run_command(&config_unset);
|
||
free(maintpath);
|
||
return rc;
|
||
}
|
||
|
||
static const char *get_frequency(enum schedule_priority schedule)
|
||
{
|
||
switch (schedule) {
|
||
case SCHEDULE_HOURLY:
|
||
return "hourly";
|
||
case SCHEDULE_DAILY:
|
||
return "daily";
|
||
case SCHEDULE_WEEKLY:
|
||
return "weekly";
|
||
default:
|
||
BUG("invalid schedule %d", schedule);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* get_schedule_cmd` reads the GIT_TEST_MAINT_SCHEDULER environment variable
|
||
* to mock the schedulers that `git maintenance start` rely on.
|
||
*
|
||
* For test purpose, GIT_TEST_MAINT_SCHEDULER can be set to a comma-separated
|
||
* list of colon-separated key/value pairs where each pair contains a scheduler
|
||
* and its corresponding mock.
|
||
*
|
||
* * If $GIT_TEST_MAINT_SCHEDULER is not set, return false and leave the
|
||
* arguments unmodified.
|
||
*
|
||
* * If $GIT_TEST_MAINT_SCHEDULER is set, return true.
|
||
* In this case, the *cmd value is read as input.
|
||
*
|
||
* * if the input value *cmd is the key of one of the comma-separated list
|
||
* item, then *is_available is set to true and *cmd is modified and becomes
|
||
* the mock command.
|
||
*
|
||
* * if the input value *cmd isn’t the key of any of the comma-separated list
|
||
* item, then *is_available is set to false.
|
||
*
|
||
* Ex.:
|
||
* GIT_TEST_MAINT_SCHEDULER not set
|
||
* +-------+-------------------------------------------------+
|
||
* | Input | Output |
|
||
* | *cmd | return code | *cmd | *is_available |
|
||
* +-------+-------------+-------------------+---------------+
|
||
* | "foo" | false | "foo" (unchanged) | (unchanged) |
|
||
* +-------+-------------+-------------------+---------------+
|
||
*
|
||
* GIT_TEST_MAINT_SCHEDULER set to “foo:./mock_foo.sh,bar:./mock_bar.sh”
|
||
* +-------+-------------------------------------------------+
|
||
* | Input | Output |
|
||
* | *cmd | return code | *cmd | *is_available |
|
||
* +-------+-------------+-------------------+---------------+
|
||
* | "foo" | true | "./mock.foo.sh" | true |
|
||
* | "qux" | true | "qux" (unchanged) | false |
|
||
* +-------+-------------+-------------------+---------------+
|
||
*/
|
||
static int get_schedule_cmd(const char **cmd, int *is_available)
|
||
{
|
||
char *testing = xstrdup_or_null(getenv("GIT_TEST_MAINT_SCHEDULER"));
|
||
struct string_list_item *item;
|
||
struct string_list list = STRING_LIST_INIT_NODUP;
|
||
|
||
if (!testing)
|
||
return 0;
|
||
|
||
if (is_available)
|
||
*is_available = 0;
|
||
|
||
string_list_split_in_place(&list, testing, ',', -1);
|
||
for_each_string_list_item(item, &list) {
|
||
struct string_list pair = STRING_LIST_INIT_NODUP;
|
||
|
||
if (string_list_split_in_place(&pair, item->string, ':', 2) != 2)
|
||
continue;
|
||
|
||
if (!strcmp(*cmd, pair.items[0].string)) {
|
||
*cmd = pair.items[1].string;
|
||
if (is_available)
|
||
*is_available = 1;
|
||
string_list_clear(&list, 0);
|
||
UNLEAK(testing);
|
||
return 1;
|
||
}
|
||
}
|
||
|
||
string_list_clear(&list, 0);
|
||
free(testing);
|
||
return 1;
|
||
}
|
||
|
||
static int is_launchctl_available(void)
|
||
{
|
||
const char *cmd = "launchctl";
|
||
int is_available;
|
||
if (get_schedule_cmd(&cmd, &is_available))
|
||
return is_available;
|
||
|
||
#ifdef __APPLE__
|
||
return 1;
|
||
#else
|
||
return 0;
|
||
#endif
|
||
}
|
||
|
||
static char *launchctl_service_name(const char *frequency)
|
||
{
|
||
struct strbuf label = STRBUF_INIT;
|
||
strbuf_addf(&label, "org.git-scm.git.%s", frequency);
|
||
return strbuf_detach(&label, NULL);
|
||
}
|
||
|
||
static char *launchctl_service_filename(const char *name)
|
||
{
|
||
char *expanded;
|
||
struct strbuf filename = STRBUF_INIT;
|
||
strbuf_addf(&filename, "~/Library/LaunchAgents/%s.plist", name);
|
||
|
||
expanded = interpolate_path(filename.buf, 1);
|
||
if (!expanded)
|
||
die(_("failed to expand path '%s'"), filename.buf);
|
||
|
||
strbuf_release(&filename);
|
||
return expanded;
|
||
}
|
||
|
||
static char *launchctl_get_uid(void)
|
||
{
|
||
return xstrfmt("gui/%d", getuid());
|
||
}
|
||
|
||
static int launchctl_boot_plist(int enable, const char *filename)
|
||
{
|
||
const char *cmd = "launchctl";
|
||
int result;
|
||
struct child_process child = CHILD_PROCESS_INIT;
|
||
char *uid = launchctl_get_uid();
|
||
|
||
get_schedule_cmd(&cmd, NULL);
|
||
strvec_split(&child.args, cmd);
|
||
strvec_pushl(&child.args, enable ? "bootstrap" : "bootout", uid,
|
||
filename, NULL);
|
||
|
||
child.no_stderr = 1;
|
||
child.no_stdout = 1;
|
||
|
||
if (start_command(&child))
|
||
die(_("failed to start launchctl"));
|
||
|
||
result = finish_command(&child);
|
||
|
||
free(uid);
|
||
return result;
|
||
}
|
||
|
||
static int launchctl_remove_plist(enum schedule_priority schedule)
|
||
{
|
||
const char *frequency = get_frequency(schedule);
|
||
char *name = launchctl_service_name(frequency);
|
||
char *filename = launchctl_service_filename(name);
|
||
int result = launchctl_boot_plist(0, filename);
|
||
unlink(filename);
|
||
free(filename);
|
||
free(name);
|
||
return result;
|
||
}
|
||
|
||
static int launchctl_remove_plists(void)
|
||
{
|
||
return launchctl_remove_plist(SCHEDULE_HOURLY) ||
|
||
launchctl_remove_plist(SCHEDULE_DAILY) ||
|
||
launchctl_remove_plist(SCHEDULE_WEEKLY);
|
||
}
|
||
|
||
static int launchctl_list_contains_plist(const char *name, const char *cmd)
|
||
{
|
||
struct child_process child = CHILD_PROCESS_INIT;
|
||
|
||
strvec_split(&child.args, cmd);
|
||
strvec_pushl(&child.args, "list", name, NULL);
|
||
|
||
child.no_stderr = 1;
|
||
child.no_stdout = 1;
|
||
|
||
if (start_command(&child))
|
||
die(_("failed to start launchctl"));
|
||
|
||
/* Returns failure if 'name' doesn't exist. */
|
||
return !finish_command(&child);
|
||
}
|
||
|
||
static int launchctl_schedule_plist(const char *exec_path, enum schedule_priority schedule)
|
||
{
|
||
int i, fd;
|
||
const char *preamble, *repeat;
|
||
const char *frequency = get_frequency(schedule);
|
||
char *name = launchctl_service_name(frequency);
|
||
char *filename = launchctl_service_filename(name);
|
||
struct lock_file lk = LOCK_INIT;
|
||
static unsigned long lock_file_timeout_ms = ULONG_MAX;
|
||
struct strbuf plist = STRBUF_INIT, plist2 = STRBUF_INIT;
|
||
struct stat st;
|
||
const char *cmd = "launchctl";
|
||
|
||
get_schedule_cmd(&cmd, NULL);
|
||
preamble = "<?xml version=\"1.0\"?>\n"
|
||
"<!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">\n"
|
||
"<plist version=\"1.0\">"
|
||
"<dict>\n"
|
||
"<key>Label</key><string>%s</string>\n"
|
||
"<key>ProgramArguments</key>\n"
|
||
"<array>\n"
|
||
"<string>%s/git</string>\n"
|
||
"<string>--exec-path=%s</string>\n"
|
||
"<string>for-each-repo</string>\n"
|
||
"<string>--config=maintenance.repo</string>\n"
|
||
"<string>maintenance</string>\n"
|
||
"<string>run</string>\n"
|
||
"<string>--schedule=%s</string>\n"
|
||
"</array>\n"
|
||
"<key>StartCalendarInterval</key>\n"
|
||
"<array>\n";
|
||
strbuf_addf(&plist, preamble, name, exec_path, exec_path, frequency);
|
||
|
||
switch (schedule) {
|
||
case SCHEDULE_HOURLY:
|
||
repeat = "<dict>\n"
|
||
"<key>Hour</key><integer>%d</integer>\n"
|
||
"<key>Minute</key><integer>0</integer>\n"
|
||
"</dict>\n";
|
||
for (i = 1; i <= 23; i++)
|
||
strbuf_addf(&plist, repeat, i);
|
||
break;
|
||
|
||
case SCHEDULE_DAILY:
|
||
repeat = "<dict>\n"
|
||
"<key>Day</key><integer>%d</integer>\n"
|
||
"<key>Hour</key><integer>0</integer>\n"
|
||
"<key>Minute</key><integer>0</integer>\n"
|
||
"</dict>\n";
|
||
for (i = 1; i <= 6; i++)
|
||
strbuf_addf(&plist, repeat, i);
|
||
break;
|
||
|
||
case SCHEDULE_WEEKLY:
|
||
strbuf_addstr(&plist,
|
||
"<dict>\n"
|
||
"<key>Day</key><integer>0</integer>\n"
|
||
"<key>Hour</key><integer>0</integer>\n"
|
||
"<key>Minute</key><integer>0</integer>\n"
|
||
"</dict>\n");
|
||
break;
|
||
|
||
default:
|
||
/* unreachable */
|
||
break;
|
||
}
|
||
strbuf_addstr(&plist, "</array>\n</dict>\n</plist>\n");
|
||
|
||
if (safe_create_leading_directories(filename))
|
||
die(_("failed to create directories for '%s'"), filename);
|
||
|
||
if ((long)lock_file_timeout_ms < 0 &&
|
||
git_config_get_ulong("gc.launchctlplistlocktimeoutms",
|
||
&lock_file_timeout_ms))
|
||
lock_file_timeout_ms = 150;
|
||
|
||
fd = hold_lock_file_for_update_timeout(&lk, filename, LOCK_DIE_ON_ERROR,
|
||
lock_file_timeout_ms);
|
||
|
||
/*
|
||
* Does this file already exist? With the intended contents? Is it
|
||
* registered already? Then it does not need to be re-registered.
|
||
*/
|
||
if (!stat(filename, &st) && st.st_size == plist.len &&
|
||
strbuf_read_file(&plist2, filename, plist.len) == plist.len &&
|
||
!strbuf_cmp(&plist, &plist2) &&
|
||
launchctl_list_contains_plist(name, cmd))
|
||
rollback_lock_file(&lk);
|
||
else {
|
||
if (write_in_full(fd, plist.buf, plist.len) < 0 ||
|
||
commit_lock_file(&lk))
|
||
die_errno(_("could not write '%s'"), filename);
|
||
|
||
/* bootout might fail if not already running, so ignore */
|
||
launchctl_boot_plist(0, filename);
|
||
if (launchctl_boot_plist(1, filename))
|
||
die(_("failed to bootstrap service %s"), filename);
|
||
}
|
||
|
||
free(filename);
|
||
free(name);
|
||
strbuf_release(&plist);
|
||
strbuf_release(&plist2);
|
||
return 0;
|
||
}
|
||
|
||
static int launchctl_add_plists(void)
|
||
{
|
||
const char *exec_path = git_exec_path();
|
||
|
||
return launchctl_schedule_plist(exec_path, SCHEDULE_HOURLY) ||
|
||
launchctl_schedule_plist(exec_path, SCHEDULE_DAILY) ||
|
||
launchctl_schedule_plist(exec_path, SCHEDULE_WEEKLY);
|
||
}
|
||
|
||
static int launchctl_update_schedule(int run_maintenance, int fd)
|
||
{
|
||
if (run_maintenance)
|
||
return launchctl_add_plists();
|
||
else
|
||
return launchctl_remove_plists();
|
||
}
|
||
|
||
static int is_schtasks_available(void)
|
||
{
|
||
const char *cmd = "schtasks";
|
||
int is_available;
|
||
if (get_schedule_cmd(&cmd, &is_available))
|
||
return is_available;
|
||
|
||
#ifdef GIT_WINDOWS_NATIVE
|
||
return 1;
|
||
#else
|
||
return 0;
|
||
#endif
|
||
}
|
||
|
||
static char *schtasks_task_name(const char *frequency)
|
||
{
|
||
struct strbuf label = STRBUF_INIT;
|
||
strbuf_addf(&label, "Git Maintenance (%s)", frequency);
|
||
return strbuf_detach(&label, NULL);
|
||
}
|
||
|
||
static int schtasks_remove_task(enum schedule_priority schedule)
|
||
{
|
||
const char *cmd = "schtasks";
|
||
int result;
|
||
struct strvec args = STRVEC_INIT;
|
||
const char *frequency = get_frequency(schedule);
|
||
char *name = schtasks_task_name(frequency);
|
||
|
||
get_schedule_cmd(&cmd, NULL);
|
||
strvec_split(&args, cmd);
|
||
strvec_pushl(&args, "/delete", "/tn", name, "/f", NULL);
|
||
|
||
result = run_command_v_opt(args.v, 0);
|
||
|
||
strvec_clear(&args);
|
||
free(name);
|
||
return result;
|
||
}
|
||
|
||
static int schtasks_remove_tasks(void)
|
||
{
|
||
return schtasks_remove_task(SCHEDULE_HOURLY) ||
|
||
schtasks_remove_task(SCHEDULE_DAILY) ||
|
||
schtasks_remove_task(SCHEDULE_WEEKLY);
|
||
}
|
||
|
||
static int schtasks_schedule_task(const char *exec_path, enum schedule_priority schedule)
|
||
{
|
||
const char *cmd = "schtasks";
|
||
int result;
|
||
struct child_process child = CHILD_PROCESS_INIT;
|
||
const char *xml;
|
||
struct tempfile *tfile;
|
||
const char *frequency = get_frequency(schedule);
|
||
char *name = schtasks_task_name(frequency);
|
||
struct strbuf tfilename = STRBUF_INIT;
|
||
|
||
get_schedule_cmd(&cmd, NULL);
|
||
|
||
strbuf_addf(&tfilename, "%s/schedule_%s_XXXXXX",
|
||
get_git_common_dir(), frequency);
|
||
tfile = xmks_tempfile(tfilename.buf);
|
||
strbuf_release(&tfilename);
|
||
|
||
if (!fdopen_tempfile(tfile, "w"))
|
||
die(_("failed to create temp xml file"));
|
||
|
||
xml = "<?xml version=\"1.0\" ?>\n"
|
||
"<Task version=\"1.4\" xmlns=\"http://schemas.microsoft.com/windows/2004/02/mit/task\">\n"
|
||
"<Triggers>\n"
|
||
"<CalendarTrigger>\n";
|
||
fputs(xml, tfile->fp);
|
||
|
||
switch (schedule) {
|
||
case SCHEDULE_HOURLY:
|
||
fprintf(tfile->fp,
|
||
"<StartBoundary>2020-01-01T01:00:00</StartBoundary>\n"
|
||
"<Enabled>true</Enabled>\n"
|
||
"<ScheduleByDay>\n"
|
||
"<DaysInterval>1</DaysInterval>\n"
|
||
"</ScheduleByDay>\n"
|
||
"<Repetition>\n"
|
||
"<Interval>PT1H</Interval>\n"
|
||
"<Duration>PT23H</Duration>\n"
|
||
"<StopAtDurationEnd>false</StopAtDurationEnd>\n"
|
||
"</Repetition>\n");
|
||
break;
|
||
|
||
case SCHEDULE_DAILY:
|
||
fprintf(tfile->fp,
|
||
"<StartBoundary>2020-01-01T00:00:00</StartBoundary>\n"
|
||
"<Enabled>true</Enabled>\n"
|
||
"<ScheduleByWeek>\n"
|
||
"<DaysOfWeek>\n"
|
||
"<Monday />\n"
|
||
"<Tuesday />\n"
|
||
"<Wednesday />\n"
|
||
"<Thursday />\n"
|
||
"<Friday />\n"
|
||
"<Saturday />\n"
|
||
"</DaysOfWeek>\n"
|
||
"<WeeksInterval>1</WeeksInterval>\n"
|
||
"</ScheduleByWeek>\n");
|
||
break;
|
||
|
||
case SCHEDULE_WEEKLY:
|
||
fprintf(tfile->fp,
|
||
"<StartBoundary>2020-01-01T00:00:00</StartBoundary>\n"
|
||
"<Enabled>true</Enabled>\n"
|
||
"<ScheduleByWeek>\n"
|
||
"<DaysOfWeek>\n"
|
||
"<Sunday />\n"
|
||
"</DaysOfWeek>\n"
|
||
"<WeeksInterval>1</WeeksInterval>\n"
|
||
"</ScheduleByWeek>\n");
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
xml = "</CalendarTrigger>\n"
|
||
"</Triggers>\n"
|
||
"<Principals>\n"
|
||
"<Principal id=\"Author\">\n"
|
||
"<LogonType>InteractiveToken</LogonType>\n"
|
||
"<RunLevel>LeastPrivilege</RunLevel>\n"
|
||
"</Principal>\n"
|
||
"</Principals>\n"
|
||
"<Settings>\n"
|
||
"<MultipleInstancesPolicy>IgnoreNew</MultipleInstancesPolicy>\n"
|
||
"<Enabled>true</Enabled>\n"
|
||
"<Hidden>true</Hidden>\n"
|
||
"<UseUnifiedSchedulingEngine>true</UseUnifiedSchedulingEngine>\n"
|
||
"<WakeToRun>false</WakeToRun>\n"
|
||
"<ExecutionTimeLimit>PT72H</ExecutionTimeLimit>\n"
|
||
"<Priority>7</Priority>\n"
|
||
"</Settings>\n"
|
||
"<Actions Context=\"Author\">\n"
|
||
"<Exec>\n"
|
||
"<Command>\"%s\\git.exe\"</Command>\n"
|
||
"<Arguments>--exec-path=\"%s\" for-each-repo --config=maintenance.repo maintenance run --schedule=%s</Arguments>\n"
|
||
"</Exec>\n"
|
||
"</Actions>\n"
|
||
"</Task>\n";
|
||
fprintf(tfile->fp, xml, exec_path, exec_path, frequency);
|
||
strvec_split(&child.args, cmd);
|
||
strvec_pushl(&child.args, "/create", "/tn", name, "/f", "/xml",
|
||
get_tempfile_path(tfile), NULL);
|
||
close_tempfile_gently(tfile);
|
||
|
||
child.no_stdout = 1;
|
||
child.no_stderr = 1;
|
||
|
||
if (start_command(&child))
|
||
die(_("failed to start schtasks"));
|
||
result = finish_command(&child);
|
||
|
||
delete_tempfile(&tfile);
|
||
free(name);
|
||
return result;
|
||
}
|
||
|
||
static int schtasks_schedule_tasks(void)
|
||
{
|
||
const char *exec_path = git_exec_path();
|
||
|
||
return schtasks_schedule_task(exec_path, SCHEDULE_HOURLY) ||
|
||
schtasks_schedule_task(exec_path, SCHEDULE_DAILY) ||
|
||
schtasks_schedule_task(exec_path, SCHEDULE_WEEKLY);
|
||
}
|
||
|
||
static int schtasks_update_schedule(int run_maintenance, int fd)
|
||
{
|
||
if (run_maintenance)
|
||
return schtasks_schedule_tasks();
|
||
else
|
||
return schtasks_remove_tasks();
|
||
}
|
||
|
||
MAYBE_UNUSED
|
||
static int check_crontab_process(const char *cmd)
|
||
{
|
||
struct child_process child = CHILD_PROCESS_INIT;
|
||
|
||
strvec_split(&child.args, cmd);
|
||
strvec_push(&child.args, "-l");
|
||
child.no_stdin = 1;
|
||
child.no_stdout = 1;
|
||
child.no_stderr = 1;
|
||
child.silent_exec_failure = 1;
|
||
|
||
if (start_command(&child))
|
||
return 0;
|
||
/* Ignore exit code, as an empty crontab will return error. */
|
||
finish_command(&child);
|
||
return 1;
|
||
}
|
||
|
||
static int is_crontab_available(void)
|
||
{
|
||
const char *cmd = "crontab";
|
||
int is_available;
|
||
|
||
if (get_schedule_cmd(&cmd, &is_available))
|
||
return is_available;
|
||
|
||
#ifdef __APPLE__
|
||
/*
|
||
* macOS has cron, but it requires special permissions and will
|
||
* create a UI alert when attempting to run this command.
|
||
*/
|
||
return 0;
|
||
#else
|
||
return check_crontab_process(cmd);
|
||
#endif
|
||
}
|
||
|
||
#define BEGIN_LINE "# BEGIN GIT MAINTENANCE SCHEDULE"
|
||
#define END_LINE "# END GIT MAINTENANCE SCHEDULE"
|
||
|
||
static int crontab_update_schedule(int run_maintenance, int fd)
|
||
{
|
||
const char *cmd = "crontab";
|
||
int result = 0;
|
||
int in_old_region = 0;
|
||
struct child_process crontab_list = CHILD_PROCESS_INIT;
|
||
struct child_process crontab_edit = CHILD_PROCESS_INIT;
|
||
FILE *cron_list, *cron_in;
|
||
struct strbuf line = STRBUF_INIT;
|
||
|
||
get_schedule_cmd(&cmd, NULL);
|
||
strvec_split(&crontab_list.args, cmd);
|
||
strvec_push(&crontab_list.args, "-l");
|
||
crontab_list.in = -1;
|
||
crontab_list.out = dup(fd);
|
||
crontab_list.git_cmd = 0;
|
||
|
||
if (start_command(&crontab_list))
|
||
return error(_("failed to run 'crontab -l'; your system might not support 'cron'"));
|
||
|
||
/* Ignore exit code, as an empty crontab will return error. */
|
||
finish_command(&crontab_list);
|
||
|
||
/*
|
||
* Read from the .lock file, filtering out the old
|
||
* schedule while appending the new schedule.
|
||
*/
|
||
cron_list = fdopen(fd, "r");
|
||
rewind(cron_list);
|
||
|
||
strvec_split(&crontab_edit.args, cmd);
|
||
crontab_edit.in = -1;
|
||
crontab_edit.git_cmd = 0;
|
||
|
||
if (start_command(&crontab_edit))
|
||
return error(_("failed to run 'crontab'; your system might not support 'cron'"));
|
||
|
||
cron_in = fdopen(crontab_edit.in, "w");
|
||
if (!cron_in) {
|
||
result = error(_("failed to open stdin of 'crontab'"));
|
||
goto done_editing;
|
||
}
|
||
|
||
while (!strbuf_getline_lf(&line, cron_list)) {
|
||
if (!in_old_region && !strcmp(line.buf, BEGIN_LINE))
|
||
in_old_region = 1;
|
||
else if (in_old_region && !strcmp(line.buf, END_LINE))
|
||
in_old_region = 0;
|
||
else if (!in_old_region)
|
||
fprintf(cron_in, "%s\n", line.buf);
|
||
}
|
||
strbuf_release(&line);
|
||
|
||
if (run_maintenance) {
|
||
struct strbuf line_format = STRBUF_INIT;
|
||
const char *exec_path = git_exec_path();
|
||
|
||
fprintf(cron_in, "%s\n", BEGIN_LINE);
|
||
fprintf(cron_in,
|
||
"# The following schedule was created by Git\n");
|
||
fprintf(cron_in, "# Any edits made in this region might be\n");
|
||
fprintf(cron_in,
|
||
"# replaced in the future by a Git command.\n\n");
|
||
|
||
strbuf_addf(&line_format,
|
||
"%%s %%s * * %%s \"%s/git\" --exec-path=\"%s\" for-each-repo --config=maintenance.repo maintenance run --schedule=%%s\n",
|
||
exec_path, exec_path);
|
||
fprintf(cron_in, line_format.buf, "0", "1-23", "*", "hourly");
|
||
fprintf(cron_in, line_format.buf, "0", "0", "1-6", "daily");
|
||
fprintf(cron_in, line_format.buf, "0", "0", "0", "weekly");
|
||
strbuf_release(&line_format);
|
||
|
||
fprintf(cron_in, "\n%s\n", END_LINE);
|
||
}
|
||
|
||
fflush(cron_in);
|
||
fclose(cron_in);
|
||
close(crontab_edit.in);
|
||
|
||
done_editing:
|
||
if (finish_command(&crontab_edit))
|
||
result = error(_("'crontab' died"));
|
||
else
|
||
fclose(cron_list);
|
||
return result;
|
||
}
|
||
|
||
static int real_is_systemd_timer_available(void)
|
||
{
|
||
struct child_process child = CHILD_PROCESS_INIT;
|
||
|
||
strvec_pushl(&child.args, "systemctl", "--user", "list-timers", NULL);
|
||
child.no_stdin = 1;
|
||
child.no_stdout = 1;
|
||
child.no_stderr = 1;
|
||
child.silent_exec_failure = 1;
|
||
|
||
if (start_command(&child))
|
||
return 0;
|
||
if (finish_command(&child))
|
||
return 0;
|
||
return 1;
|
||
}
|
||
|
||
static int is_systemd_timer_available(void)
|
||
{
|
||
const char *cmd = "systemctl";
|
||
int is_available;
|
||
|
||
if (get_schedule_cmd(&cmd, &is_available))
|
||
return is_available;
|
||
|
||
return real_is_systemd_timer_available();
|
||
}
|
||
|
||
static char *xdg_config_home_systemd(const char *filename)
|
||
{
|
||
return xdg_config_home_for("systemd/user", filename);
|
||
}
|
||
|
||
static int systemd_timer_enable_unit(int enable,
|
||
enum schedule_priority schedule)
|
||
{
|
||
const char *cmd = "systemctl";
|
||
struct child_process child = CHILD_PROCESS_INIT;
|
||
const char *frequency = get_frequency(schedule);
|
||
|
||
/*
|
||
* Disabling the systemd unit while it is already disabled makes
|
||
* systemctl print an error.
|
||
* Let's ignore it since it means we already are in the expected state:
|
||
* the unit is disabled.
|
||
*
|
||
* On the other hand, enabling a systemd unit which is already enabled
|
||
* produces no error.
|
||
*/
|
||
if (!enable)
|
||
child.no_stderr = 1;
|
||
|
||
get_schedule_cmd(&cmd, NULL);
|
||
strvec_split(&child.args, cmd);
|
||
strvec_pushl(&child.args, "--user", enable ? "enable" : "disable",
|
||
"--now", NULL);
|
||
strvec_pushf(&child.args, "git-maintenance@%s.timer", frequency);
|
||
|
||
if (start_command(&child))
|
||
return error(_("failed to start systemctl"));
|
||
if (finish_command(&child))
|
||
/*
|
||
* Disabling an already disabled systemd unit makes
|
||
* systemctl fail.
|
||
* Let's ignore this failure.
|
||
*
|
||
* Enabling an enabled systemd unit doesn't fail.
|
||
*/
|
||
if (enable)
|
||
return error(_("failed to run systemctl"));
|
||
return 0;
|
||
}
|
||
|
||
static int systemd_timer_delete_unit_templates(void)
|
||
{
|
||
int ret = 0;
|
||
char *filename = xdg_config_home_systemd("git-maintenance@.timer");
|
||
if (unlink(filename) && !is_missing_file_error(errno))
|
||
ret = error_errno(_("failed to delete '%s'"), filename);
|
||
FREE_AND_NULL(filename);
|
||
|
||
filename = xdg_config_home_systemd("git-maintenance@.service");
|
||
if (unlink(filename) && !is_missing_file_error(errno))
|
||
ret = error_errno(_("failed to delete '%s'"), filename);
|
||
|
||
free(filename);
|
||
return ret;
|
||
}
|
||
|
||
static int systemd_timer_delete_units(void)
|
||
{
|
||
return systemd_timer_enable_unit(0, SCHEDULE_HOURLY) ||
|
||
systemd_timer_enable_unit(0, SCHEDULE_DAILY) ||
|
||
systemd_timer_enable_unit(0, SCHEDULE_WEEKLY) ||
|
||
systemd_timer_delete_unit_templates();
|
||
}
|
||
|
||
static int systemd_timer_write_unit_templates(const char *exec_path)
|
||
{
|
||
char *filename;
|
||
FILE *file;
|
||
const char *unit;
|
||
|
||
filename = xdg_config_home_systemd("git-maintenance@.timer");
|
||
if (safe_create_leading_directories(filename)) {
|
||
error(_("failed to create directories for '%s'"), filename);
|
||
goto error;
|
||
}
|
||
file = fopen_or_warn(filename, "w");
|
||
if (!file)
|
||
goto error;
|
||
|
||
unit = "# This file was created and is maintained by Git.\n"
|
||
"# Any edits made in this file might be replaced in the future\n"
|
||
"# by a Git command.\n"
|
||
"\n"
|
||
"[Unit]\n"
|
||
"Description=Optimize Git repositories data\n"
|
||
"\n"
|
||
"[Timer]\n"
|
||
"OnCalendar=%i\n"
|
||
"Persistent=true\n"
|
||
"\n"
|
||
"[Install]\n"
|
||
"WantedBy=timers.target\n";
|
||
if (fputs(unit, file) == EOF) {
|
||
error(_("failed to write to '%s'"), filename);
|
||
fclose(file);
|
||
goto error;
|
||
}
|
||
if (fclose(file) == EOF) {
|
||
error_errno(_("failed to flush '%s'"), filename);
|
||
goto error;
|
||
}
|
||
free(filename);
|
||
|
||
filename = xdg_config_home_systemd("git-maintenance@.service");
|
||
file = fopen_or_warn(filename, "w");
|
||
if (!file)
|
||
goto error;
|
||
|
||
unit = "# This file was created and is maintained by Git.\n"
|
||
"# Any edits made in this file might be replaced in the future\n"
|
||
"# by a Git command.\n"
|
||
"\n"
|
||
"[Unit]\n"
|
||
"Description=Optimize Git repositories data\n"
|
||
"\n"
|
||
"[Service]\n"
|
||
"Type=oneshot\n"
|
||
"ExecStart=\"%s/git\" --exec-path=\"%s\" for-each-repo --config=maintenance.repo maintenance run --schedule=%%i\n"
|
||
"LockPersonality=yes\n"
|
||
"MemoryDenyWriteExecute=yes\n"
|
||
"NoNewPrivileges=yes\n"
|
||
"RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6\n"
|
||
"RestrictNamespaces=yes\n"
|
||
"RestrictRealtime=yes\n"
|
||
"RestrictSUIDSGID=yes\n"
|
||
"SystemCallArchitectures=native\n"
|
||
"SystemCallFilter=@system-service\n";
|
||
if (fprintf(file, unit, exec_path, exec_path) < 0) {
|
||
error(_("failed to write to '%s'"), filename);
|
||
fclose(file);
|
||
goto error;
|
||
}
|
||
if (fclose(file) == EOF) {
|
||
error_errno(_("failed to flush '%s'"), filename);
|
||
goto error;
|
||
}
|
||
free(filename);
|
||
return 0;
|
||
|
||
error:
|
||
free(filename);
|
||
systemd_timer_delete_unit_templates();
|
||
return -1;
|
||
}
|
||
|
||
static int systemd_timer_setup_units(void)
|
||
{
|
||
const char *exec_path = git_exec_path();
|
||
|
||
int ret = systemd_timer_write_unit_templates(exec_path) ||
|
||
systemd_timer_enable_unit(1, SCHEDULE_HOURLY) ||
|
||
systemd_timer_enable_unit(1, SCHEDULE_DAILY) ||
|
||
systemd_timer_enable_unit(1, SCHEDULE_WEEKLY);
|
||
if (ret)
|
||
systemd_timer_delete_units();
|
||
return ret;
|
||
}
|
||
|
||
static int systemd_timer_update_schedule(int run_maintenance, int fd)
|
||
{
|
||
if (run_maintenance)
|
||
return systemd_timer_setup_units();
|
||
else
|
||
return systemd_timer_delete_units();
|
||
}
|
||
|
||
enum scheduler {
|
||
SCHEDULER_INVALID = -1,
|
||
SCHEDULER_AUTO,
|
||
SCHEDULER_CRON,
|
||
SCHEDULER_SYSTEMD,
|
||
SCHEDULER_LAUNCHCTL,
|
||
SCHEDULER_SCHTASKS,
|
||
};
|
||
|
||
static const struct {
|
||
const char *name;
|
||
int (*is_available)(void);
|
||
int (*update_schedule)(int run_maintenance, int fd);
|
||
} scheduler_fn[] = {
|
||
[SCHEDULER_CRON] = {
|
||
.name = "crontab",
|
||
.is_available = is_crontab_available,
|
||
.update_schedule = crontab_update_schedule,
|
||
},
|
||
[SCHEDULER_SYSTEMD] = {
|
||
.name = "systemctl",
|
||
.is_available = is_systemd_timer_available,
|
||
.update_schedule = systemd_timer_update_schedule,
|
||
},
|
||
[SCHEDULER_LAUNCHCTL] = {
|
||
.name = "launchctl",
|
||
.is_available = is_launchctl_available,
|
||
.update_schedule = launchctl_update_schedule,
|
||
},
|
||
[SCHEDULER_SCHTASKS] = {
|
||
.name = "schtasks",
|
||
.is_available = is_schtasks_available,
|
||
.update_schedule = schtasks_update_schedule,
|
||
},
|
||
};
|
||
|
||
static enum scheduler parse_scheduler(const char *value)
|
||
{
|
||
if (!value)
|
||
return SCHEDULER_INVALID;
|
||
else if (!strcasecmp(value, "auto"))
|
||
return SCHEDULER_AUTO;
|
||
else if (!strcasecmp(value, "cron") || !strcasecmp(value, "crontab"))
|
||
return SCHEDULER_CRON;
|
||
else if (!strcasecmp(value, "systemd") ||
|
||
!strcasecmp(value, "systemd-timer"))
|
||
return SCHEDULER_SYSTEMD;
|
||
else if (!strcasecmp(value, "launchctl"))
|
||
return SCHEDULER_LAUNCHCTL;
|
||
else if (!strcasecmp(value, "schtasks"))
|
||
return SCHEDULER_SCHTASKS;
|
||
else
|
||
return SCHEDULER_INVALID;
|
||
}
|
||
|
||
static int maintenance_opt_scheduler(const struct option *opt, const char *arg,
|
||
int unset)
|
||
{
|
||
enum scheduler *scheduler = opt->value;
|
||
|
||
BUG_ON_OPT_NEG(unset);
|
||
|
||
*scheduler = parse_scheduler(arg);
|
||
if (*scheduler == SCHEDULER_INVALID)
|
||
return error(_("unrecognized --scheduler argument '%s'"), arg);
|
||
return 0;
|
||
}
|
||
|
||
struct maintenance_start_opts {
|
||
enum scheduler scheduler;
|
||
};
|
||
|
||
static enum scheduler resolve_scheduler(enum scheduler scheduler)
|
||
{
|
||
if (scheduler != SCHEDULER_AUTO)
|
||
return scheduler;
|
||
|
||
#if defined(__APPLE__)
|
||
return SCHEDULER_LAUNCHCTL;
|
||
|
||
#elif defined(GIT_WINDOWS_NATIVE)
|
||
return SCHEDULER_SCHTASKS;
|
||
|
||
#elif defined(__linux__)
|
||
if (is_systemd_timer_available())
|
||
return SCHEDULER_SYSTEMD;
|
||
else if (is_crontab_available())
|
||
return SCHEDULER_CRON;
|
||
else
|
||
die(_("neither systemd timers nor crontab are available"));
|
||
|
||
#else
|
||
return SCHEDULER_CRON;
|
||
#endif
|
||
}
|
||
|
||
static void validate_scheduler(enum scheduler scheduler)
|
||
{
|
||
if (scheduler == SCHEDULER_INVALID)
|
||
BUG("invalid scheduler");
|
||
if (scheduler == SCHEDULER_AUTO)
|
||
BUG("resolve_scheduler should have been called before");
|
||
|
||
if (!scheduler_fn[scheduler].is_available())
|
||
die(_("%s scheduler is not available"),
|
||
scheduler_fn[scheduler].name);
|
||
}
|
||
|
||
static int update_background_schedule(const struct maintenance_start_opts *opts,
|
||
int enable)
|
||
{
|
||
unsigned int i;
|
||
int result = 0;
|
||
struct lock_file lk;
|
||
char *lock_path = xstrfmt("%s/schedule", the_repository->objects->odb->path);
|
||
|
||
if (hold_lock_file_for_update(&lk, lock_path, LOCK_NO_DEREF) < 0) {
|
||
free(lock_path);
|
||
return error(_("another process is scheduling background maintenance"));
|
||
}
|
||
|
||
for (i = 1; i < ARRAY_SIZE(scheduler_fn); i++) {
|
||
if (enable && opts->scheduler == i)
|
||
continue;
|
||
if (!scheduler_fn[i].is_available())
|
||
continue;
|
||
scheduler_fn[i].update_schedule(0, get_lock_file_fd(&lk));
|
||
}
|
||
|
||
if (enable)
|
||
result = scheduler_fn[opts->scheduler].update_schedule(
|
||
1, get_lock_file_fd(&lk));
|
||
|
||
rollback_lock_file(&lk);
|
||
|
||
free(lock_path);
|
||
return result;
|
||
}
|
||
|
||
static const char *const builtin_maintenance_start_usage[] = {
|
||
N_("git maintenance start [--scheduler=<scheduler>]"),
|
||
NULL
|
||
};
|
||
|
||
static int maintenance_start(int argc, const char **argv, const char *prefix)
|
||
{
|
||
struct maintenance_start_opts opts = { 0 };
|
||
struct option options[] = {
|
||
OPT_CALLBACK_F(
|
||
0, "scheduler", &opts.scheduler, N_("scheduler"),
|
||
N_("scheduler to trigger git maintenance run"),
|
||
PARSE_OPT_NONEG, maintenance_opt_scheduler),
|
||
OPT_END()
|
||
};
|
||
const char *register_args[] = { "register", NULL };
|
||
|
||
argc = parse_options(argc, argv, prefix, options,
|
||
builtin_maintenance_start_usage, 0);
|
||
if (argc)
|
||
usage_with_options(builtin_maintenance_start_usage, options);
|
||
|
||
opts.scheduler = resolve_scheduler(opts.scheduler);
|
||
validate_scheduler(opts.scheduler);
|
||
|
||
if (maintenance_register(ARRAY_SIZE(register_args)-1, register_args, NULL))
|
||
warning(_("failed to add repo to global config"));
|
||
return update_background_schedule(&opts, 1);
|
||
}
|
||
|
||
static const char *const builtin_maintenance_stop_usage[] = {
|
||
N_("git maintenance stop"),
|
||
NULL
|
||
};
|
||
|
||
static int maintenance_stop(int argc, const char **argv, const char *prefix)
|
||
{
|
||
struct option options[] = {
|
||
OPT_END()
|
||
};
|
||
argc = parse_options(argc, argv, prefix, options,
|
||
builtin_maintenance_stop_usage, 0);
|
||
if (argc)
|
||
usage_with_options(builtin_maintenance_stop_usage, options);
|
||
return update_background_schedule(NULL, 0);
|
||
}
|
||
|
||
static const char * const builtin_maintenance_usage[] = {
|
||
N_("git maintenance <subcommand> [<options>]"),
|
||
NULL,
|
||
};
|
||
|
||
int cmd_maintenance(int argc, const char **argv, const char *prefix)
|
||
{
|
||
parse_opt_subcommand_fn *fn = NULL;
|
||
struct option builtin_maintenance_options[] = {
|
||
OPT_SUBCOMMAND("run", &fn, maintenance_run),
|
||
OPT_SUBCOMMAND("start", &fn, maintenance_start),
|
||
OPT_SUBCOMMAND("stop", &fn, maintenance_stop),
|
||
OPT_SUBCOMMAND("register", &fn, maintenance_register),
|
||
OPT_SUBCOMMAND("unregister", &fn, maintenance_unregister),
|
||
OPT_END(),
|
||
};
|
||
|
||
argc = parse_options(argc, argv, prefix, builtin_maintenance_options,
|
||
builtin_maintenance_usage, 0);
|
||
return fn(argc, argv, prefix);
|
||
}
|