lib/common/scheduler.c

/* */
This source file includes following definitions.
pcmk_get_dc
pcmk_get_no_quorum_policy
pcmk_set_scheduler_cib
pcmk_has_quorum
pcmk_find_node
   1 /*
   2  * Copyright 2004-2024 the Pacemaker project contributors
   3  *
   4  * The version control history for this file may have further details.
   5  *
   6  * This source code is licensed under the GNU Lesser General Public License
   7  * version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
   8  */
   9 
  10 #include <crm_internal.h>
  11 
  12 #include <stdint.h>             // uint32_t
  13 #include <errno.h>              // EINVAL
  14 #include <glib.h>               // gboolean, FALSE
  15 #include <libxml/tree.h>        // xmlNode
  16 
  17 #include <crm/common/scheduler.h>
  18 
  19 uint32_t pcmk__warnings = 0;
  20 
  21 /*!
  22  * \internal
  23  * \brief Get the Designated Controller node from scheduler data
  24  *
  25  * \param[in] scheduler  Scheduler data
  26  *
  27  * \return Designated Controller node from scheduler data, or NULL if none
  28  */
  29 pcmk_node_t *
  30 pcmk_get_dc(const pcmk_scheduler_t *scheduler)
     /*  */
  31 {
  32     return (scheduler == NULL)? NULL : scheduler->dc_node;
  33 }
  34 
  35 /*!
  36  * \internal
  37  * \brief Get the no quorum policy from scheduler data
  38  *
  39  * \param[in] scheduler  Scheduler data
  40  *
  41  * \return No quorum policy from scheduler data
  42  */
  43 enum pe_quorum_policy
  44 pcmk_get_no_quorum_policy(const pcmk_scheduler_t *scheduler)
     /*  */
  45 {
  46     if (scheduler == NULL) {
  47         return pcmk_no_quorum_stop; // The default
  48     }
  49     return scheduler->no_quorum_policy;
  50 }
  51 
  52 /*!
  53  * \internal
  54  * \brief Set CIB XML as scheduler input in scheduler data
  55  *
  56  * \param[out] scheduler  Scheduler data
  57  * \param[in]  cib        CIB XML to set as scheduler input
  58  *
  59  * \return Standard Pacemaker return code (EINVAL if \p scheduler is NULL,
  60  *         otherwise pcmk_rc_ok)
  61  * \note This will not free any previously set scheduler CIB.
  62  */
  63 int
  64 pcmk_set_scheduler_cib(pcmk_scheduler_t *scheduler, xmlNode *cib)
     /*  */
  65 {
  66     if (scheduler == NULL) {
  67         return EINVAL;
  68     }
  69     scheduler->input = cib;
  70     return pcmk_rc_ok;
  71 }
  72 
  73 /*!
  74  * \internal
  75  * \brief Check whether cluster has quorum
  76  *
  77  * \param[in] scheduler  Scheduler data
  78  *
  79  * \return true if cluster has quorum, otherwise false
  80  */
  81 bool
  82 pcmk_has_quorum(const pcmk_scheduler_t *scheduler)
     /*  */
  83 {
  84     if (scheduler == NULL) {
  85         return false;
  86     }
  87     return pcmk_is_set(scheduler->flags, pcmk__sched_quorate);
  88 }
  89 
  90 /*!
  91  * \brief Find a node by name in scheduler data
  92  *
  93  * \param[in] scheduler  Scheduler data
  94  * \param[in] node_name  Name of node to find
  95  *
  96  * \return Node from scheduler data that matches \p node_name if any,
  97  *         otherwise NULL
  98  */
  99 pcmk_node_t *
 100 pcmk_find_node(const pcmk_scheduler_t *scheduler, const char *node_name)
     /*  */
 101 {
 102     if ((scheduler == NULL) || (node_name == NULL)) {
 103         return NULL;
 104     }
 105     return pcmk__find_node_in_list(scheduler->nodes, node_name);
 106 }
/* */
root/lib/common/scheduler.c

DEFINITIONS
