C++ (Cpp) quorum_app_callback Examples

Example #1

File: corosync.c Project: RichardChen3511/pacemaker

static void
pcmk_quorum_notification(quorum_handle_t handle,
                         uint32_t quorate,
                         uint64_t ring_id, uint32_t view_list_entries, uint32_t * view_list)
{
    int i;
    GHashTableIter iter;
    crm_node_t *node = NULL;
    static gboolean init_phase = TRUE;

    if (quorate != crm_have_quorum) {
        crm_notice("Membership " U64T ": quorum %s (%lu)", ring_id,
                   quorate ? "acquired" : "lost", (long unsigned int)view_list_entries);
        crm_have_quorum = quorate;

    } else {
        crm_info("Membership " U64T ": quorum %s (%lu)", ring_id,
                 quorate ? "retained" : "still lost", (long unsigned int)view_list_entries);
    }

    if (view_list_entries == 0 && init_phase) {
        crm_info("Corosync membership is still forming, ignoring");
        return;
    }

    init_phase = FALSE;

    g_hash_table_iter_init(&iter, crm_peer_cache);
    while (g_hash_table_iter_next(&iter, NULL, (gpointer *) &node)) {
        node->last_seen = 0;
    }

    for (i = 0; i < view_list_entries; i++) {
        uint32_t id = view_list[i];
        char *name = NULL;

        crm_debug("Member[%d] %u ", i, id);

        node = crm_get_peer(id, NULL);
        if (node->uname == NULL) {
            crm_info("Obtaining name for new node %u", id);
            name = corosync_node_name(0, id);
            node = crm_get_peer(id, name);
        }

        crm_update_peer_state(__FUNCTION__, node, CRM_NODE_MEMBER, ring_id);
        free(name);
    }

    crm_trace("Reaping unseen nodes...");
    g_hash_table_iter_init(&iter, crm_peer_cache);
    while (g_hash_table_iter_next(&iter, NULL, (gpointer *) &node)) {
        if (node->last_seen != ring_id && node->state) {
            crm_update_peer_state(__FUNCTION__, node, CRM_NODE_LOST, 0);
        } else if (node->last_seen != ring_id) {
            crm_info("State of node %s[%u] is still unknown", node->uname, node->id);
        }
    }

    if (quorum_app_callback) {
        quorum_app_callback(ring_id, quorate);
    }
}

Example #2

File: corosync.c Project: HideoYamauchi/pacemaker

static void
pcmk_quorum_notification(quorum_handle_t handle,
                         uint32_t quorate,
                         uint64_t ring_id, uint32_t view_list_entries, uint32_t * view_list)
{
    int i;
    GHashTableIter iter;
    crm_node_t *node = NULL;
    static gboolean init_phase = TRUE;

    if (quorate != crm_have_quorum) {
        if (quorate) {
            crm_notice("Quorum acquired " CRM_XS " membership=%" U64T " members=%lu",
                       ring_id, (long unsigned int)view_list_entries);
        } else {
            crm_warn("Quorum lost " CRM_XS " membership=%" U64T " members=%lu",
                     ring_id, (long unsigned int)view_list_entries);
        }
        crm_have_quorum = quorate;

    } else {
        crm_info("Quorum %s " CRM_XS " membership=%" U64T " members=%lu",
                 (quorate? "retained" : "still lost"), ring_id,
                 (long unsigned int)view_list_entries);
    }

    if (view_list_entries == 0 && init_phase) {
        crm_info("Corosync membership is still forming, ignoring");
        return;
    }

    init_phase = FALSE;

    /* Reset last_seen for all cached nodes so we can tell which ones aren't
     * in the view list */
    g_hash_table_iter_init(&iter, crm_peer_cache);
    while (g_hash_table_iter_next(&iter, NULL, (gpointer *) &node)) {
        node->last_seen = 0;
    }

    /* Update the peer cache for each node in view list */
    for (i = 0; i < view_list_entries; i++) {
        uint32_t id = view_list[i];

        crm_debug("Member[%d] %u ", i, id);

        /* Get this node's peer cache entry (adding one if not already there) */
        node = crm_get_peer(id, NULL);
        if (node->uname == NULL) {
            char *name = corosync_node_name(0, id);

            crm_info("Obtaining name for new node %u", id);
            node = crm_get_peer(id, name);
            free(name);
        }

        /* Update the node state (including updating last_seen to ring_id) */
        crm_update_peer_state(__FUNCTION__, node, CRM_NODE_MEMBER, ring_id);
    }

    /* Remove any peer cache entries we didn't update */
    crm_reap_unseen_nodes(ring_id);

    if (quorum_app_callback) {
        quorum_app_callback(ring_id, quorate);
    }
}