mirror of
https://github.com/EnterpriseDB/repmgr.git
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7b4ee80af2
Check it's actually possible for the demotion candidate to attach to the promotion candidate before executing the switchover. As with other checks of this nature, there's a faint possibility the situation could change between the time the check is carried out and the demotion candidate is restarted to connect to the promotion candidate, but there's not a lot we can do about that. The main purpose is to be able to catch existing misconfigurations before anything gets changed. Implements GitHub #370.
233 lines
6.1 KiB
C
233 lines
6.1 KiB
C
/*
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* repmgr-client-global.h
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* Copyright (c) 2ndQuadrant, 2010-2018
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _REPMGR_CLIENT_GLOBAL_H_
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#define _REPMGR_CLIENT_GLOBAL_H_
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#include "configfile.h"
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/* values for --copy-external-config-files */
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#define CONFIG_FILE_SAMEPATH 1
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#define CONFIG_FILE_PGDATA 2
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/* default value for "cluster event --limit"*/
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#define CLUSTER_EVENT_LIMIT 20
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typedef struct
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{
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/* configuration metadata */
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bool conninfo_provided;
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bool connection_param_provided;
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bool host_param_provided;
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bool limit_provided;
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/* general configuration options */
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char config_file[MAXPGPATH];
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bool dry_run;
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bool force;
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char pg_bindir[MAXLEN]; /* overrides setting in repmgr.conf */
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bool wait;
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/* logging options */
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char log_level[MAXLEN]; /* overrides setting in repmgr.conf */
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bool log_to_file;
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bool terse;
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bool verbose;
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/* output options */
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bool csv;
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bool nagios;
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bool optformat;
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/* standard connection options */
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char dbname[MAXLEN];
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char host[MAXLEN];
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char username[MAXLEN];
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char port[MAXLEN];
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/* other connection options */
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char remote_user[MAXLEN];
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char superuser[MAXLEN];
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/* general node options */
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int node_id;
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char node_name[MAXLEN];
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char data_dir[MAXPGPATH];
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int remote_node_id;
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/* "standby clone" options */
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bool copy_external_config_files;
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int copy_external_config_files_destination;
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bool fast_checkpoint;
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bool rsync_only;
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bool no_upstream_connection;
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char recovery_min_apply_delay[MAXLEN];
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char replication_user[MAXLEN];
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char upstream_conninfo[MAXLEN];
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bool without_barman;
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/* "standby clone"/"standby follow" options */
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int upstream_node_id;
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/* "standby register" options */
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bool wait_register_sync;
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int wait_register_sync_seconds;
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int wait_start;
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/* "standby switchover" options */
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bool always_promote;
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bool force_rewind;
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bool siblings_follow;
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/* "node status" options */
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bool is_shutdown_cleanly;
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/* "node check" options */
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bool archive_ready;
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bool downstream;
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bool replication_lag;
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bool role;
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bool slots;
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bool has_passfile;
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bool replication_connection;
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/* "node join" options */
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char config_files[MAXLEN];
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/* "node service" options */
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char action[MAXLEN];
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bool check;
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bool list_actions;
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bool checkpoint;
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/* "cluster event" options */
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bool all;
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char event[MAXLEN];
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int limit;
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/* "cluster cleanup" options */
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int keep_history;
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/* following options for internal use */
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char config_archive_dir[MAXPGPATH];
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OutputMode output_mode;
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} t_runtime_options;
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#define T_RUNTIME_OPTIONS_INITIALIZER { \
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/* configuration metadata */ \
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false, false, false, false, \
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/* general configuration options */ \
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"", false, false, "", false, \
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/* logging options */ \
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"", false, false, false, \
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/* output options */ \
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false, false, false, \
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/* database connection options */ \
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"", "", "", "", \
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/* other connection options */ \
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"", "", \
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/* general node options */ \
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UNKNOWN_NODE_ID, "", "", UNKNOWN_NODE_ID, \
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/* "standby clone" options */ \
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false, CONFIG_FILE_SAMEPATH, false, false, false, "", "", "", \
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false, \
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/* "standby clone"/"standby follow" options */ \
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NO_UPSTREAM_NODE, \
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/* "standby register" options */ \
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false, 0, DEFAULT_WAIT_START, \
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/* "standby switchover" options */ \
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false, false, false, \
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/* "node status" options */ \
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false, \
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/* "node check" options */ \
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false, false, false, false, false, false, false, \
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/* "node join" options */ \
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"", \
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/* "node service" options */ \
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"", false, false, false, \
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/* "cluster event" options */ \
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false, "", CLUSTER_EVENT_LIMIT, \
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/* "cluster cleanup" options */ \
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0, \
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/* Following options for internal use */ \
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"/tmp", OM_TEXT \
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}
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typedef enum
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{
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barman,
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pg_basebackup
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} standy_clone_mode;
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typedef enum
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{
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ACTION_UNKNOWN = -1,
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ACTION_NONE,
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ACTION_START,
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ACTION_STOP,
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ACTION_RESTART,
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ACTION_RELOAD,
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ACTION_PROMOTE
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} t_server_action;
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/* global configuration structures */
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extern t_runtime_options runtime_options;
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extern t_configuration_options config_file_options;
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t_conninfo_param_list source_conninfo;
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extern bool config_file_required;
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extern char pg_bindir[MAXLEN];
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extern t_node_info target_node_info;
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extern int check_server_version(PGconn *conn, char *server_type, bool exit_on_error, char *server_version_string);
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extern void check_93_config(void);
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extern bool create_repmgr_extension(PGconn *conn);
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extern int test_ssh_connection(char *host, char *remote_user);
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extern bool local_command(const char *command, PQExpBufferData *outputbuf);
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extern standy_clone_mode get_standby_clone_mode(void);
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extern int copy_remote_files(char *host, char *remote_user, char *remote_path,
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char *local_path, bool is_directory, int server_version_num);
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extern void print_error_list(ItemList *error_list, int log_level);
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extern char *make_pg_path(const char *file);
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extern void get_superuser_connection(PGconn **conn, PGconn **superuser_conn, PGconn **privileged_conn);
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extern bool remote_command(const char *host, const char *user, const char *command, PQExpBufferData *outputbuf);
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extern void make_remote_repmgr_path(PQExpBufferData *outputbuf, t_node_info *remote_node_record);
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extern void print_help_header(void);
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/* server control functions */
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extern void get_server_action(t_server_action action, char *script, char *data_dir);
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extern bool data_dir_required_for_action(t_server_action action);
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extern void get_node_data_directory(char *data_dir_buf);
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extern void init_node_record(t_node_info *node_record);
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#endif /* _REPMGR_CLIENT_GLOBAL_H_ */
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