root/daemons/controld/controld_corosync.c

/* */

DEFINITIONS

1. crmd_cs_dispatch
2. crmd_quorum_callback
3. crmd_cs_destroy
4. crm_connect_corosync

   1 /*
   2  * Copyright 2004-2019 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 General Public License version 2
   7  * or later (GPLv2+) WITHOUT ANY WARRANTY.
   8  */
   9 
  10 #include <crm_internal.h>
  11 
  12 #include <sys/param.h>
  13 #include <sys/types.h>
  14 #include <sys/stat.h>
  15 
  16 #include <crm/crm.h>
  17 #include <crm/cluster/internal.h>
  18 #include <crm/common/xml.h>
  19 
  20 #include <pacemaker-controld.h>
  21 
  22 #if SUPPORT_COROSYNC
  23 
  24 extern void post_cache_update(int seq);
  25 
  26 /*       A_HA_CONNECT   */
  27 
  28 static void
  29 crmd_cs_dispatch(cpg_handle_t handle, const struct cpg_name *groupName,
     /*  */
  30                  uint32_t nodeid, uint32_t pid, void *msg, size_t msg_len)
  31 {
  32     uint32_t kind = 0;
  33     const char *from = NULL;
  34     char *data = pcmk_message_common_cs(handle, nodeid, pid, msg, &kind, &from);
  35 
  36     if(data == NULL) {
  37         return;
  38     }
  39     if (kind == crm_class_cluster) {
  40         crm_node_t *peer = NULL;
  41         xmlNode *xml = string2xml(data);
  42 
  43         if (xml == NULL) {
  44             crm_err("Could not parse message content (%d): %.100s", kind, data);
  45             free(data);
  46             return;
  47         }
  48 
  49         crm_xml_add(xml, F_ORIG, from);
  50         /* crm_xml_add_int(xml, F_SEQ, wrapper->id); Fake? */
  51 
  52         peer = crm_get_peer(0, from);
  53         if (!pcmk_is_set(peer->processes, crm_proc_cpg)) {
  54             /* If we can still talk to our peer process on that node,
  55              * then it must be part of the corosync membership
  56              */
  57             crm_warn("Receiving messages from a node we think is dead: %s[%d]",
  58                      peer->uname, peer->id);
  59             crm_update_peer_proc(__func__, peer, crm_proc_cpg,
  60                                  ONLINESTATUS);
  61         }
  62         crmd_ha_msg_filter(xml);
  63         free_xml(xml);
  64     } else {
  65         crm_err("Invalid message class (%d): %.100s", kind, data);
  66     }
  67     free(data);
  68 }
  69 
  70 static gboolean
  71 crmd_quorum_callback(unsigned long long seq, gboolean quorate)
     /*  */
  72 {
  73     crm_update_quorum(quorate, FALSE);
  74     post_cache_update(seq);
  75     return TRUE;
  76 }
  77 
  78 static void
  79 crmd_cs_destroy(gpointer user_data)
     /*  */
  80 {
  81     if (!pcmk_is_set(fsa_input_register, R_HA_DISCONNECTED)) {
  82         crm_crit("Lost connection to cluster layer, shutting down");
  83         crmd_exit(CRM_EX_DISCONNECT);
  84 
  85     } else {
  86         crm_info("Corosync connection closed");
  87     }
  88 }
  89 
  90 extern gboolean crm_connect_corosync(crm_cluster_t * cluster);
  91 
  92 gboolean
  93 crm_connect_corosync(crm_cluster_t * cluster)
     /*  */
  94 {
  95     if (is_corosync_cluster()) {
  96         crm_set_status_callback(&peer_update_callback);
  97         cluster->cpg.cpg_deliver_fn = crmd_cs_dispatch;
  98         cluster->cpg.cpg_confchg_fn = pcmk_cpg_membership;
  99         cluster->destroy = crmd_cs_destroy;
 100 
 101         if (crm_cluster_connect(cluster)) {
 102             pcmk__corosync_quorum_connect(crmd_quorum_callback,
 103                                           crmd_cs_destroy);
 104             return TRUE;
 105         }
 106     }
 107     return FALSE;
 108 }
 109 
 110 #endif

/* */