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/*
* Copyright 2004-2024 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU General Public License version 2
* or later (GPLv2+) WITHOUT ANY WARRANTY.
*/
#include <crm_internal.h>
#include <crm/crm.h>
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <errno.h>
#include <crm/common/cmdline_internal.h>
#include <crm/common/ipc_internal.h>
#include <crm/common/mainloop.h>
#include <crm/pengine/internal.h>
#include <pacemaker-internal.h>
#include "pacemaker-schedulerd.h"
#define SUMMARY "pacemaker-schedulerd - daemon for calculating a Pacemaker cluster's response to events"
struct {
gchar **remainder;
} options;
pcmk__output_t *logger_out = NULL;
static pcmk__output_t *out = NULL;
static GMainLoop *mainloop = NULL;
static qb_ipcs_service_t *ipcs = NULL;
static crm_exit_t exit_code = CRM_EX_OK;
pcmk__supported_format_t formats[] = {
PCMK__SUPPORTED_FORMAT_NONE,
PCMK__SUPPORTED_FORMAT_TEXT,
PCMK__SUPPORTED_FORMAT_XML,
{ NULL, NULL, NULL }
};
void pengine_shutdown(int nsig);
/* @COMPAT Deprecated since 2.1.8. Use pcmk_list_cluster_options() or
* crm_attribute --list-options=cluster instead of querying daemon metadata.
*/
static int
scheduler_metadata(pcmk__output_t *out)
{
return pcmk__daemon_metadata(out, "pacemaker-schedulerd",
"Pacemaker scheduler options",
"Cluster options used by Pacemaker's "
"scheduler",
pcmk__opt_schedulerd);
}
static GOptionContext *
build_arg_context(pcmk__common_args_t *args, GOptionGroup **group) {
GOptionContext *context = NULL;
GOptionEntry extra_prog_entries[] = {
{ G_OPTION_REMAINING, 0, G_OPTION_FLAG_NONE, G_OPTION_ARG_STRING_ARRAY, &options.remainder,
NULL,
NULL },
{ NULL }
};
context = pcmk__build_arg_context(args, "text (default), xml", group, NULL);
pcmk__add_main_args(context, extra_prog_entries);
return context;
}
int
main(int argc, char **argv)
{
GError *error = NULL;
int rc = pcmk_rc_ok;
GOptionGroup *output_group = NULL;
pcmk__common_args_t *args = pcmk__new_common_args(SUMMARY);
gchar **processed_args = pcmk__cmdline_preproc(argv, NULL);
GOptionContext *context = build_arg_context(args, &output_group);
crm_log_preinit(NULL, argc, argv);
mainloop_add_signal(SIGTERM, pengine_shutdown);
pcmk__register_formats(output_group, formats);
if (!g_option_context_parse_strv(context, &processed_args, &error)) {
exit_code = CRM_EX_USAGE;
goto done;
}
rc = pcmk__output_new(&out, args->output_ty, args->output_dest, argv);
if ((rc != pcmk_rc_ok) || (out == NULL)) {
exit_code = CRM_EX_FATAL;
g_set_error(&error, PCMK__EXITC_ERROR, exit_code, "Error creating output format %s: %s",
args->output_ty, pcmk_rc_str(rc));
goto done;
}
pe__register_messages(out);
pcmk__register_lib_messages(out);
if (options.remainder) {
if (g_strv_length(options.remainder) == 1 &&
pcmk__str_eq("metadata", options.remainder[0], pcmk__str_casei)) {
rc = scheduler_metadata(out);
if (rc != pcmk_rc_ok) {
exit_code = CRM_EX_FATAL;
g_set_error(&error, PCMK__EXITC_ERROR, exit_code,
"Unable to display metadata: %s", pcmk_rc_str(rc));
}
} else {
exit_code = CRM_EX_USAGE;
g_set_error(&error, PCMK__EXITC_ERROR, exit_code,
"Unsupported extra command line parameters");
}
goto done;
}
if (args->version) {
out->version(out, false);
goto done;
}
pcmk__cli_init_logging("pacemaker-schedulerd", args->verbosity);
crm_log_init(NULL, LOG_INFO, TRUE, FALSE, argc, argv, FALSE);
crm_notice("Starting Pacemaker scheduler");
if (pcmk__daemon_can_write(PE_STATE_DIR, NULL) == FALSE) {
crm_err("Terminating due to bad permissions on " PE_STATE_DIR);
exit_code = CRM_EX_FATAL;
g_set_error(&error, PCMK__EXITC_ERROR, exit_code,
"ERROR: Bad permissions on %s (see logs for details)", PE_STATE_DIR);
goto done;
}
ipcs = pcmk__serve_schedulerd_ipc(&ipc_callbacks);
if (ipcs == NULL) {
g_set_error(&error, PCMK__EXITC_ERROR, exit_code,
"Failed to create pacemaker-schedulerd server: exiting and inhibiting respawn");
exit_code = CRM_EX_FATAL;
goto done;
}
if (pcmk__log_output_new(&logger_out) != pcmk_rc_ok) {
exit_code = CRM_EX_FATAL;
goto done;
}
pe__register_messages(logger_out);
pcmk__register_lib_messages(logger_out);
pcmk__output_set_log_level(logger_out, LOG_TRACE);
/* Create the mainloop and run it... */
mainloop = g_main_loop_new(NULL, FALSE);
crm_notice("Pacemaker scheduler successfully started and accepting connections");
g_main_loop_run(mainloop);
done:
g_strfreev(options.remainder);
g_strfreev(processed_args);
pcmk__free_arg_context(context);
pcmk__output_and_clear_error(&error, out);
pengine_shutdown(0);
}
void
pengine_shutdown(int nsig)
{
if (ipcs != NULL) {
crm_trace("Closing IPC server");
mainloop_del_ipc_server(ipcs);
ipcs = NULL;
}
if (logger_out != NULL) {
logger_out->finish(logger_out, exit_code, true, NULL);
pcmk__output_free(logger_out);
logger_out = NULL;
}
if (out != NULL) {
out->finish(out, exit_code, true, NULL);
pcmk__output_free(out);
out = NULL;
}
pcmk__unregister_formats();
crm_exit(exit_code);
}
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