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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 Lesser General Public License
* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
*/
#include <crm_internal.h>
#include <stdint.h> // uint32_t
#include <errno.h> // EINVAL
#include <glib.h> // gboolean, FALSE
#include <libxml/tree.h> // xmlNode
#include <crm/common/scheduler.h>
uint32_t pcmk__warnings = 0;
/*!
* \internal
* \brief Set non-zero default values in scheduler data
*
* \param[in,out] scheduler Scheduler data to modify
*
* \note Values that default to NULL or 0 will remain unchanged
*/
void
pcmk__set_scheduler_defaults(pcmk_scheduler_t *scheduler)
{
pcmk__assert(scheduler != NULL);
scheduler->flags = 0U;
#if PCMK__CONCURRENT_FENCING_DEFAULT_TRUE
pcmk__set_scheduler_flags(scheduler,
pcmk__sched_symmetric_cluster
|pcmk__sched_concurrent_fencing
|pcmk__sched_stop_removed_resources
|pcmk__sched_cancel_removed_actions);
#else
pcmk__set_scheduler_flags(scheduler,
pcmk__sched_symmetric_cluster
|pcmk__sched_stop_removed_resources
|pcmk__sched_cancel_removed_actions);
#endif
scheduler->no_quorum_policy = pcmk_no_quorum_stop;
scheduler->priv->next_action_id = 1;
scheduler->priv->next_ordering_id = 1;
}
/*!
* \internal
* \brief Get the Designated Controller node from scheduler data
*
* \param[in] scheduler Scheduler data
*
* \return Designated Controller node from scheduler data, or NULL if none
*/
pcmk_node_t *
pcmk_get_dc(const pcmk_scheduler_t *scheduler)
{
return (scheduler == NULL)? NULL : scheduler->dc_node;
}
/*!
* \internal
* \brief Get the no quorum policy from scheduler data
*
* \param[in] scheduler Scheduler data
*
* \return No quorum policy from scheduler data
*/
enum pe_quorum_policy
pcmk_get_no_quorum_policy(const pcmk_scheduler_t *scheduler)
{
if (scheduler == NULL) {
return pcmk_no_quorum_stop; // The default
}
return scheduler->no_quorum_policy;
}
/*!
* \internal
* \brief Set CIB XML as scheduler input in scheduler data
*
* \param[out] scheduler Scheduler data
* \param[in] cib CIB XML to set as scheduler input
*
* \return Standard Pacemaker return code (EINVAL if \p scheduler is NULL,
* otherwise pcmk_rc_ok)
* \note This will not free any previously set scheduler CIB.
*/
int
pcmk_set_scheduler_cib(pcmk_scheduler_t *scheduler, xmlNode *cib)
{
if (scheduler == NULL) {
return EINVAL;
}
scheduler->input = cib;
return pcmk_rc_ok;
}
/*!
* \internal
* \brief Check whether cluster has quorum
*
* \param[in] scheduler Scheduler data
*
* \return true if cluster has quorum, otherwise false
*/
bool
pcmk_has_quorum(const pcmk_scheduler_t *scheduler)
{
if (scheduler == NULL) {
return false;
}
return pcmk_is_set(scheduler->flags, pcmk__sched_quorate);
}
/*!
* \brief Find a node by name in scheduler data
*
* \param[in] scheduler Scheduler data
* \param[in] node_name Name of node to find
*
* \return Node from scheduler data that matches \p node_name if any,
* otherwise NULL
*/
pcmk_node_t *
pcmk_find_node(const pcmk_scheduler_t *scheduler, const char *node_name)
{
if ((scheduler == NULL) || (node_name == NULL)) {
return NULL;
}
return pcmk__find_node_in_list(scheduler->nodes, node_name);
}
/*!
* \internal
* \brief Get scheduler data's "now" in epoch time
*
* \param[in,out] scheduler Scheduler data
*
* \return Scheduler data's "now" as seconds since epoch (defaulting to current
* time)
*/
time_t
pcmk__scheduler_epoch_time(pcmk_scheduler_t *scheduler)
{
if (scheduler == NULL) {
return time(NULL);
}
if (scheduler->priv->now == NULL) {
crm_trace("Scheduler 'now' set to current time");
scheduler->priv->now = crm_time_new(NULL);
}
return crm_time_get_seconds_since_epoch(scheduler->priv->now);
}

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