Files
MaxScale/server/modules/monitor/galeramon/galeramon.hh
Niclas Antti c447e5cf15 Uncrustify maxscale
See script directory for method. The script to run in the top level
MaxScale directory is called maxscale-uncrustify.sh, which uses
another script, list-src, from the same directory (so you need to set
your PATH). The uncrustify version was 0.66.
2018-09-09 22:26:19 +03:00

81 lines
3.0 KiB
C++

/*
* Copyright (c) 2018 MariaDB Corporation Ab
*
* Use of this software is governed by the Business Source License included
* in the LICENSE.TXT file and at www.mariadb.com/bsl11.
*
* Change Date: 2022-01-01
*
* On the date above, in accordance with the Business Source License, use
* of this software will be governed by version 2 or later of the General
* Public License.
*/
#pragma once
/**
* @file galeramon.hh - The Galera cluster monitor
*/
#include <maxscale/ccdefs.hh>
#include <unordered_map>
#include <maxscale/monitor.hh>
/**
* Galera status variables
*/
struct GaleraNode
{
int joined; /**< Node is in sync with the cluster */
int local_index; /**< Node index */
int local_state; /**< Node state */
int cluster_size; /**< The cluster size*/
std::string cluster_uuid; /**< Cluster UUID */
};
typedef std::unordered_map<MXS_MONITORED_SERVER*, GaleraNode> NodeMap;
class GaleraMonitor : public maxscale::MonitorInstanceSimple
{
public:
GaleraMonitor(const GaleraMonitor&) = delete;
GaleraMonitor& operator=(const GaleraMonitor&) = delete;
~GaleraMonitor();
static GaleraMonitor* create(MXS_MONITOR* monitor);
void diagnostics(DCB* dcb) const;
json_t* diagnostics_json() const;
protected:
bool configure(const MXS_CONFIG_PARAMETER* param);
bool has_sufficient_permissions() const;
void update_server_status(MXS_MONITORED_SERVER* monitored_server);
void pre_tick();
void post_tick();
private:
unsigned long m_id; /**< Monitor ID */
int m_disableMasterFailback; /**< Monitor flag for Galera Cluster Master failback */
int m_availableWhenDonor; /**< Monitor flag for Galera Cluster Donor availability */
bool m_disableMasterRoleSetting; /**< Monitor flag to disable setting master role */
bool m_root_node_as_master; /**< Whether we require that the Master should
* have a wsrep_local_index of 0 */
bool m_use_priority; /**< Use server priorities */
bool m_set_donor_nodes; /**< set the wrep_sst_donor variable with an
* ordered list of nodes */
std::string m_cluster_uuid; /**< The Cluster UUID */
bool m_log_no_members; /**< Should we log if no member are found. */
NodeMap m_info; /**< Contains Galera Cluster variables of all nodes */
int m_cluster_size; /**< How many nodes in the cluster */
GaleraMonitor(MXS_MONITOR* monitor);
bool detect_cluster_size(const int n_nodes,
const char* candidate_uuid,
const int candidate_size);
MXS_MONITORED_SERVER* get_candidate_master();
void set_galera_cluster();
void update_sst_donor_nodes(int is_cluster);
};