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https://github.com/EnterpriseDB/repmgr.git
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146 lines
3.1 KiB
C
146 lines
3.1 KiB
C
/*
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* dbutils.h
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*
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* Copyright (c) 2ndQuadrant, 2010-2017
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*/
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#ifndef _REPMGR_DBUTILS_H_
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#define _REPMGR_DBUTILS_H_
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#include "access/xlogdefs.h"
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#include "pqexpbuffer.h"
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#include "config.h"
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#include "strutil.h"
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typedef enum {
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UNKNOWN = 0,
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MASTER,
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STANDBY,
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WITNESS,
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BDR
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} t_server_type;
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/*
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* Struct to store node information
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*/
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typedef struct s_node_info
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{
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int node_id;
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int upstream_node_id;
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t_server_type type;
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char name[MAXLEN];
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char conninfo[MAXLEN];
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char slot_name[MAXLEN];
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int priority;
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bool active;
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bool is_ready;
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bool is_visible;
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XLogRecPtr xlog_location;
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} t_node_info;
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#define T_NODE_INFO_INITIALIZER { \
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NODE_NOT_FOUND, \
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NO_UPSTREAM_NODE, \
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UNKNOWN, \
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"", \
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"", \
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"", \
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DEFAULT_PRIORITY, \
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true, \
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false, \
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false, \
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InvalidXLogRecPtr \
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}
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typedef struct NodeInfoListCell
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{
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struct NodeInfoListCell *next;
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t_node_info *node_info;
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} NodeInfoListCell;
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typedef struct NodeInfoList
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{
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NodeInfoListCell *head;
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NodeInfoListCell *tail;
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} NodeInfoList;
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typedef struct s_event_info
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{
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char *node_name;
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char *conninfo_str;
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} t_event_info;
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#define T_EVENT_INFO_INITIALIZER { \
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NULL, \
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NULL \
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}
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/*
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* Struct to store list of conninfo keywords and values
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*/
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typedef struct
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{
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int size;
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char **keywords;
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char **values;
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} t_conninfo_param_list;
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/*
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* Struct to store replication slot information
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*/
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typedef struct s_replication_slot
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{
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char slot_name[MAXLEN];
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char slot_type[MAXLEN];
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bool active;
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} t_replication_slot;
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/* connection functions */
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PGconn *establish_db_connection(const char *conninfo,
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const bool exit_on_error);
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PGconn *establish_db_connection_as_user(const char *conninfo,
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const char *user,
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const bool exit_on_error);
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PGconn *establish_db_connection_by_params(const char *keywords[],
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const char *values[],
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const bool exit_on_error);
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/* conninfo manipulation functions */
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void initialize_conninfo_params(t_conninfo_param_list *param_list, bool set_defaults);
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void copy_conninfo_params(t_conninfo_param_list *dest_list, t_conninfo_param_list *source_list);
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void conn_to_param_list(PGconn *conn, t_conninfo_param_list *param_list);
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void param_set(t_conninfo_param_list *param_list, const char *param, const char *value);
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char *param_get(t_conninfo_param_list *param_list, const char *param);
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bool parse_conninfo_string(const char *conninfo_str, t_conninfo_param_list *param_list, char *errmsg, bool ignore_application_name);
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/* transaction functions */
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bool begin_transaction(PGconn *conn);
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bool commit_transaction(PGconn *conn);
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bool rollback_transaction(PGconn *conn);
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bool check_cluster_schema(PGconn *conn);
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/* GUC manipulation functions */
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bool set_config(PGconn *conn, const char *config_param, const char *config_value);
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bool set_config_bool(PGconn *conn, const char *config_param, bool state);
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/* Server information functions */
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int get_server_version(PGconn *conn, char *server_version);
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int is_standby(PGconn *conn);
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PGconn *get_master_connection(PGconn *standby_conn, int *master_id, char *master_conninfo_out);
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int get_master_node_id(PGconn *conn);
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#endif
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