return xdg_config_home_for("systemd/user", filename);
}
-static int systemd_timer_delete_unit_templates(void)
+#define SYSTEMD_UNIT_FORMAT "git-maintenance@%s.%s"
+
+static int systemd_timer_delete_timer_file(enum schedule_priority priority)
{
int ret = 0;
- char *filename = xdg_config_home_systemd("git-maintenance@.timer");
+ const char *frequency = get_frequency(priority);
+ char *local_timer_name = xstrfmt(SYSTEMD_UNIT_FORMAT, frequency, "timer");
+ char *filename = xdg_config_home_systemd(local_timer_name);
+
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");
+ free(filename);
+ free(local_timer_name);
+ return ret;
+}
+
+static int systemd_timer_delete_service_template(void)
+{
+ int ret = 0;
+ char *local_service_name = xstrfmt(SYSTEMD_UNIT_FORMAT, "", "service");
+ char *filename = xdg_config_home_systemd(local_service_name);
if (unlink(filename) && !is_missing_file_error(errno))
ret = error_errno(_("failed to delete '%s'"), filename);
free(filename);
+ free(local_service_name);
return ret;
}
-static int systemd_timer_write_unit_templates(const char *exec_path)
+/*
+ * Write the schedule information into a git-maintenance@<schedule>.timer
+ * file using a custom minute. This timer file cannot use the templating
+ * system, so we generate a specific file for each.
+ */
+static int systemd_timer_write_timer_file(enum schedule_priority schedule,
+ int minute)
{
+ int res = -1;
char *filename;
FILE *file;
const char *unit;
+ char *schedule_pattern = NULL;
+ const char *frequency = get_frequency(schedule);
+ char *local_timer_name = xstrfmt(SYSTEMD_UNIT_FORMAT, frequency, "timer");
+
+ filename = xdg_config_home_systemd(local_timer_name);
- filename = xdg_config_home_systemd("git-maintenance@.timer");
if (safe_create_leading_directories(filename)) {
error(_("failed to create directories for '%s'"), filename);
goto error;
if (!file)
goto error;
+ switch (schedule) {
+ case SCHEDULE_HOURLY:
+ schedule_pattern = xstrfmt("*-*-* *:%02d:00", minute);
+ break;
+
+ case SCHEDULE_DAILY:
+ schedule_pattern = xstrfmt("*-*-* 0:%02d:00", minute);
+ break;
+
+ case SCHEDULE_WEEKLY:
+ schedule_pattern = xstrfmt("Mon 0:%02d:00", minute);
+ break;
+
+ default:
+ BUG("Unhandled schedule_priority");
+ }
+
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"
"Description=Optimize Git repositories data\n"
"\n"
"[Timer]\n"
- "OnCalendar=%i\n"
+ "OnCalendar=%s\n"
"Persistent=true\n"
"\n"
"[Install]\n"
"WantedBy=timers.target\n";
- if (fputs(unit, file) == EOF) {
+ if (fprintf(file, unit, schedule_pattern) < 0) {
error(_("failed to write to '%s'"), filename);
fclose(file);
goto error;
error_errno(_("failed to flush '%s'"), filename);
goto error;
}
+
+ res = 0;
+
+error:
+ free(schedule_pattern);
+ free(local_timer_name);
free(filename);
+ return res;
+}
- filename = xdg_config_home_systemd("git-maintenance@.service");
+/*
+ * No matter the schedule, we use the same service and can make use of the
+ * templating system. When installing git-maintenance@<schedule>.timer,
+ * systemd will notice that git-maintenance@.service exists as a template
+ * and will use this file and insert the <schedule> into the template at
+ * the position of "%i".
+ */
+static int systemd_timer_write_service_template(const char *exec_path)
+{
+ int res = -1;
+ char *filename;
+ FILE *file;
+ const char *unit;
+ char *local_service_name = xstrfmt(SYSTEMD_UNIT_FORMAT, "", "service");
+
+ filename = xdg_config_home_systemd(local_service_name);
+ 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;
error_errno(_("failed to flush '%s'"), filename);
goto error;
}
- free(filename);
- return 0;
+
+ res = 0;
error:
+ free(local_service_name);
free(filename);
- systemd_timer_delete_unit_templates();
- return -1;
+ return res;
}
static int systemd_timer_enable_unit(int enable,
- enum schedule_priority schedule)
+ enum schedule_priority schedule,
+ int minute)
{
const char *cmd = "systemctl";
struct child_process child = CHILD_PROCESS_INIT;
*/
if (!enable)
child.no_stderr = 1;
+ else if (systemd_timer_write_timer_file(schedule, minute))
+ return -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);
+ strvec_pushf(&child.args, SYSTEMD_UNIT_FORMAT, frequency, "timer");
if (start_command(&child))
return error(_("failed to start systemctl"));
return 0;
}
+/*
+ * A previous version of Git wrote the timer units as template files.
+ * Clean these up, if they exist.
+ */
+static void systemd_timer_delete_stale_timer_templates(void)
+{
+ char *timer_template_name = xstrfmt(SYSTEMD_UNIT_FORMAT, "", "timer");
+ char *filename = xdg_config_home_systemd(timer_template_name);
+
+ if (unlink(filename) && !is_missing_file_error(errno))
+ warning(_("failed to delete '%s'"), filename);
+
+ free(filename);
+ free(timer_template_name);
+}
+
+static int systemd_timer_delete_unit_files(void)
+{
+ systemd_timer_delete_stale_timer_templates();
+
+ /* Purposefully not short-circuited to make sure all are called. */
+ return systemd_timer_delete_timer_file(SCHEDULE_HOURLY) |
+ systemd_timer_delete_timer_file(SCHEDULE_DAILY) |
+ systemd_timer_delete_timer_file(SCHEDULE_WEEKLY) |
+ systemd_timer_delete_service_template();
+}
+
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();
+ int minute = get_random_minute();
+ /* Purposefully not short-circuited to make sure all are called. */
+ return systemd_timer_enable_unit(0, SCHEDULE_HOURLY, minute) |
+ systemd_timer_enable_unit(0, SCHEDULE_DAILY, minute) |
+ systemd_timer_enable_unit(0, SCHEDULE_WEEKLY, minute) |
+ systemd_timer_delete_unit_files();
}
static int systemd_timer_setup_units(void)
{
+ int minute = get_random_minute();
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);
+ int ret = systemd_timer_write_service_template(exec_path) ||
+ systemd_timer_enable_unit(1, SCHEDULE_HOURLY, minute) ||
+ systemd_timer_enable_unit(1, SCHEDULE_DAILY, minute) ||
+ systemd_timer_enable_unit(1, SCHEDULE_WEEKLY, minute);
+
if (ret)
systemd_timer_delete_units();
+ else
+ systemd_timer_delete_stale_timer_templates();
+
return ret;
}
projects / thirdparty / git.git / commitdiff
