pgbackrest/lib/pgBackRest/Config/Config.pm

####################################################################################################################################
# CONFIG MODULE
####################################################################################################################################
package pgBackRest::Config::Config;

use strict;
use warnings FATAL => qw(all);
use Carp qw(confess);

use Cwd qw(abs_path);
use Exporter qw(import);
    our @EXPORT = qw();
use File::Basename qw(dirname basename);
use Getopt::Long qw(GetOptions);
use Storable qw(dclone);

use lib dirname($0) . '/../lib';
use pgBackRest::Common::Exception;
use pgBackRest::Common::Ini;
use pgBackRest::Common::Log;
use pgBackRest::Common::Wait;
use pgBackRest::Protocol::Common;
use pgBackRest::Version;

####################################################################################################################################
# Command constants - basic commands that are allowed in backrest
####################################################################################################################################
my %oCommandHash;

use constant CMD_ARCHIVE_GET                                        => 'archive-get';
    push @EXPORT, qw(CMD_ARCHIVE_GET);
    $oCommandHash{&CMD_ARCHIVE_GET} = true;
use constant CMD_ARCHIVE_PUSH                                       => 'archive-push';
    push @EXPORT, qw(CMD_ARCHIVE_PUSH);
    $oCommandHash{&CMD_ARCHIVE_PUSH} = true;
use constant CMD_BACKUP                                             => 'backup';
    push @EXPORT, qw(CMD_BACKUP);
    $oCommandHash{&CMD_BACKUP} = true;
use constant CMD_CHECK                                              => 'check';
    push @EXPORT, qw(CMD_CHECK);
    $oCommandHash{&CMD_CHECK} = true;
use constant CMD_EXPIRE                                             => 'expire';
    push @EXPORT, qw(CMD_EXPIRE);
    $oCommandHash{&CMD_EXPIRE} = true;
use constant CMD_HELP                                               => 'help';
    push @EXPORT, qw(CMD_HELP);
    $oCommandHash{&CMD_HELP} = true;
use constant CMD_INFO                                               => 'info';
    push @EXPORT, qw(CMD_INFO);
    $oCommandHash{&CMD_INFO} = true;
use constant CMD_LOCAL                                              => 'local';
    push @EXPORT, qw(CMD_LOCAL);
    $oCommandHash{&CMD_LOCAL} = true;
use constant CMD_REMOTE                                             => 'remote';
    push @EXPORT, qw(CMD_REMOTE);
    $oCommandHash{&CMD_REMOTE} = true;
use constant CMD_RESTORE                                            => 'restore';
    push @EXPORT, qw(CMD_RESTORE);
    $oCommandHash{&CMD_RESTORE} = true;
use constant CMD_START                                              => 'start';
    push @EXPORT, qw(CMD_START);
    $oCommandHash{&CMD_START} = true;
use constant CMD_STOP                                               => 'stop';
    push @EXPORT, qw(CMD_STOP);
    $oCommandHash{&CMD_STOP} = true;
use constant CMD_VERSION                                            => 'version';
    push @EXPORT, qw(CMD_VERSION);
    $oCommandHash{&CMD_VERSION} = true;

####################################################################################################################################
# BACKUP Type Constants
####################################################################################################################################
use constant BACKUP_TYPE_FULL                                       => 'full';
    push @EXPORT, qw(BACKUP_TYPE_FULL);
use constant BACKUP_TYPE_DIFF                                       => 'diff';
    push @EXPORT, qw(BACKUP_TYPE_DIFF);
use constant BACKUP_TYPE_INCR                                       => 'incr';
    push @EXPORT, qw(BACKUP_TYPE_INCR);

####################################################################################################################################
# INFO Output Constants
####################################################################################################################################
use constant INFO_OUTPUT_TEXT                                       => 'text';
    push @EXPORT, qw(INFO_OUTPUT_TEXT);
use constant INFO_OUTPUT_JSON                                       => 'json';
    push @EXPORT, qw(INFO_OUTPUT_JSON);

####################################################################################################################################
# SOURCE Constants
####################################################################################################################################
use constant SOURCE_CONFIG                                          => 'config';
    push @EXPORT, qw(SOURCE_CONFIG);
use constant SOURCE_PARAM                                           => 'param';
    push @EXPORT, qw(SOURCE_PARAM);
use constant SOURCE_DEFAULT                                         => 'default';
    push @EXPORT, qw(SOURCE_DEFAULT);

####################################################################################################################################
# RECOVERY Type Constants
####################################################################################################################################
use constant RECOVERY_TYPE_NAME                                     => 'name';
    push @EXPORT, qw(RECOVERY_TYPE_NAME);
use constant RECOVERY_TYPE_TIME                                     => 'time';
    push @EXPORT, qw(RECOVERY_TYPE_TIME);
use constant RECOVERY_TYPE_XID                                      => 'xid';
    push @EXPORT, qw(RECOVERY_TYPE_XID);
use constant RECOVERY_TYPE_PRESERVE                                 => 'preserve';
    push @EXPORT, qw(RECOVERY_TYPE_PRESERVE);
use constant RECOVERY_TYPE_NONE                                     => 'none';
    push @EXPORT, qw(RECOVERY_TYPE_NONE);
use constant RECOVERY_TYPE_IMMEDIATE                                => 'immediate';
    push @EXPORT, qw(RECOVERY_TYPE_IMMEDIATE);
use constant RECOVERY_TYPE_DEFAULT                                  => 'default';
    push @EXPORT, qw(RECOVERY_TYPE_DEFAULT);

####################################################################################################################################
# RECOVERY Action Constants
####################################################################################################################################
use constant RECOVERY_ACTION_PAUSE                                  => 'pause';
    push @EXPORT, qw(RECOVERY_ACTION_PAUSE);
use constant RECOVERY_ACTION_PROMOTE                                => 'promote';
    push @EXPORT, qw(RECOVERY_ACTION_PROMOTE);
use constant RECOVERY_ACTION_SHUTDOWN                               => 'shutdown';
    push @EXPORT, qw(RECOVERY_ACTION_SHUTDOWN);

####################################################################################################################################
# Option Rules
####################################################################################################################################
use constant OPTION_RULE_ALT_NAME                                   => 'alt-name';
    push @EXPORT, qw(OPTION_RULE_ALT_NAME);
use constant OPTION_RULE_ALLOW_LIST                                 => 'allow-list';
    push @EXPORT, qw(OPTION_RULE_ALLOW_LIST);
use constant OPTION_RULE_ALLOW_RANGE                                => 'allow-range';
    push @EXPORT, qw(OPTION_RULE_ALLOW_RANGE);
use constant OPTION_RULE_DEFAULT                                    => 'default';
    push @EXPORT, qw(OPTION_RULE_DEFAULT);
use constant OPTION_RULE_DEPEND                                     => 'depend';
    push @EXPORT, qw(OPTION_RULE_DEPEND);
use constant OPTION_RULE_DEPEND_OPTION                              => 'depend-option';
    push @EXPORT, qw(OPTION_RULE_DEPEND_OPTION);
use constant OPTION_RULE_DEPEND_LIST                                => 'depend-list';
    push @EXPORT, qw(OPTION_RULE_DEPEND_LIST);
use constant OPTION_RULE_DEPEND_VALUE                               => 'depend-value';
    push @EXPORT, qw(OPTION_RULE_DEPEND_VALUE);
use constant OPTION_RULE_HASH_VALUE                                 => 'hash-value';
    push @EXPORT, qw(OPTION_RULE_HASH_VALUE);
use constant OPTION_RULE_HINT                                       => 'hint';
    push @EXPORT, qw(OPTION_RULE_HINT);
use constant OPTION_RULE_NEGATE                                     => 'negate';
    push @EXPORT, qw(OPTION_RULE_NEGATE);
use constant OPTION_RULE_PREFIX                                     => 'prefix';
    push @EXPORT, qw(OPTION_RULE_PREFIX);
use constant OPTION_RULE_COMMAND                                    => 'command';
    push @EXPORT, qw(OPTION_RULE_COMMAND);
use constant OPTION_RULE_REQUIRED                                   => 'required';
    push @EXPORT, qw(OPTION_RULE_REQUIRED);
use constant OPTION_RULE_SECTION                                    => 'section';
    push @EXPORT, qw(OPTION_RULE_SECTION);
use constant OPTION_RULE_TYPE                                       => 'type';
    push @EXPORT, qw(OPTION_RULE_TYPE);

####################################################################################################################################
# Option Types
####################################################################################################################################
use constant OPTION_TYPE_BOOLEAN                                    => 'boolean';
    push @EXPORT, qw(OPTION_TYPE_BOOLEAN);
use constant OPTION_TYPE_FLOAT                                      => 'float';
    push @EXPORT, qw(OPTION_TYPE_FLOAT);
use constant OPTION_TYPE_HASH                                       => 'hash';
    push @EXPORT, qw(OPTION_TYPE_HASH);
use constant OPTION_TYPE_INTEGER                                    => 'integer';
    push @EXPORT, qw(OPTION_TYPE_INTEGER);
use constant OPTION_TYPE_STRING                                     => 'string';
    push @EXPORT, qw(OPTION_TYPE_STRING);

####################################################################################################################################
# Configuration section constants
####################################################################################################################################
use constant CONFIG_SECTION_GLOBAL                                  => 'global';
    push @EXPORT, qw(CONFIG_SECTION_GLOBAL);
use constant CONFIG_SECTION_STANZA                                  => 'stanza';
    push @EXPORT, qw(CONFIG_SECTION_STANZA);

####################################################################################################################################
# Option constants
####################################################################################################################################
# Command-line only
#-----------------------------------------------------------------------------------------------------------------------------------
use constant OPTION_CONFIG                                          => 'config';
    push @EXPORT, qw(OPTION_CONFIG);
use constant OPTION_DELTA                                           => 'delta';
    push @EXPORT, qw(OPTION_DELTA);
use constant OPTION_FORCE                                           => 'force';
    push @EXPORT, qw(OPTION_FORCE);
use constant OPTION_ONLINE                                          => 'online';
    push @EXPORT, qw(OPTION_ONLINE);
use constant OPTION_SET                                             => 'set';
    push @EXPORT, qw(OPTION_SET);
use constant OPTION_STANZA                                          => 'stanza';
    push @EXPORT, qw(OPTION_STANZA);
use constant OPTION_TARGET                                          => 'target';
    push @EXPORT, qw(OPTION_TARGET);
use constant OPTION_TARGET_EXCLUSIVE                                => 'target-exclusive';
    push @EXPORT, qw(OPTION_TARGET_EXCLUSIVE);
use constant OPTION_TARGET_ACTION                                   => 'target-action';
    push @EXPORT, qw(OPTION_TARGET_ACTION);
use constant OPTION_TARGET_TIMELINE                                 => 'target-timeline';
    push @EXPORT, qw(OPTION_TARGET_TIMELINE);
use constant OPTION_TYPE                                            => 'type';
    push @EXPORT, qw(OPTION_TYPE);
use constant OPTION_OUTPUT                                          => 'output';
    push @EXPORT, qw(OPTION_OUTPUT);
use constant OPTION_LOCK                                            => 'lock';
    push @EXPORT, qw(OPTION_LOCK);

# Command-line only help/version
#-----------------------------------------------------------------------------------------------------------------------------------
use constant OPTION_HELP                                            => 'help';
    push @EXPORT, qw(OPTION_HELP);
use constant OPTION_VERSION                                         => 'version';
    push @EXPORT, qw(OPTION_VERSION);

# Command-line only local/remote
#-----------------------------------------------------------------------------------------------------------------------------------
use constant OPTION_COMMAND                                          => 'command';
    push @EXPORT, qw(OPTION_COMMAND);
use constant OPTION_PROCESS                                          => 'process';
    push @EXPORT, qw(OPTION_PROCESS);
use constant OPTION_HOST_ID                                          => 'host-id';
    push @EXPORT, qw(OPTION_HOST_ID);

# Command-line only test
#-----------------------------------------------------------------------------------------------------------------------------------
use constant OPTION_TEST                                            => 'test';
    push @EXPORT, qw(OPTION_TEST);
use constant OPTION_TEST_DELAY                                      => 'test-delay';
    push @EXPORT, qw(OPTION_TEST_DELAY);
use constant OPTION_TEST_NO_FORK                                    => 'no-fork';
    push @EXPORT, qw(OPTION_TEST_NO_FORK);
use constant OPTION_TEST_POINT                                      => 'test-point';
    push @EXPORT, qw(OPTION_TEST_POINT);

# GENERAL Section
#-----------------------------------------------------------------------------------------------------------------------------------
use constant OPTION_ARCHIVE_TIMEOUT                                 => 'archive-timeout';
    push @EXPORT, qw(OPTION_ARCHIVE_TIMEOUT);
use constant OPTION_BUFFER_SIZE                                     => 'buffer-size';
    push @EXPORT, qw(OPTION_BUFFER_SIZE);
use constant OPTION_DB_TIMEOUT                                      => 'db-timeout';
    push @EXPORT, qw(OPTION_DB_TIMEOUT);
use constant OPTION_COMPRESS                                        => 'compress';
    push @EXPORT, qw(OPTION_COMPRESS);
use constant OPTION_COMPRESS_LEVEL                                  => 'compress-level';
    push @EXPORT, qw(OPTION_COMPRESS_LEVEL);
use constant OPTION_COMPRESS_LEVEL_NETWORK                          => 'compress-level-network';
    push @EXPORT, qw(OPTION_COMPRESS_LEVEL_NETWORK);
use constant OPTION_NEUTRAL_UMASK                                   => 'neutral-umask';
    push @EXPORT, qw(OPTION_NEUTRAL_UMASK);
use constant OPTION_PROTOCOL_TIMEOUT                                => 'protocol-timeout';
    push @EXPORT, qw(OPTION_PROTOCOL_TIMEOUT);
use constant OPTION_PROCESS_MAX                                     => 'process-max';
    push @EXPORT, qw(OPTION_PROCESS_MAX);

# Paths
use constant OPTION_LOCK_PATH                                       => 'lock-path';
    push @EXPORT, qw(OPTION_LOCK_PATH);
use constant OPTION_LOG_PATH                                        => 'log-path';
    push @EXPORT, qw(OPTION_LOG_PATH);
use constant OPTION_REPO_PATH                                       => 'repo-path';
    push @EXPORT, qw(OPTION_REPO_PATH);
use constant OPTION_SPOOL_PATH                                      => 'spool-path';
    push @EXPORT, qw(OPTION_SPOOL_PATH);

# Log level
use constant OPTION_LOG_LEVEL_CONSOLE                               => 'log-level-console';
    push @EXPORT, qw(OPTION_LOG_LEVEL_CONSOLE);
use constant OPTION_LOG_LEVEL_FILE                                  => 'log-level-file';
    push @EXPORT, qw(OPTION_LOG_LEVEL_FILE);

# ARCHIVE Section
#-----------------------------------------------------------------------------------------------------------------------------------
use constant OPTION_ARCHIVE_ASYNC                                   => 'archive-async';
    push @EXPORT, qw(OPTION_ARCHIVE_ASYNC);
use constant OPTION_ARCHIVE_MAX_MB                                  => 'archive-max-mb';
    push @EXPORT, qw(OPTION_ARCHIVE_MAX_MB);

# BACKUP Section
#-----------------------------------------------------------------------------------------------------------------------------------
use constant OPTION_BACKUP_ARCHIVE_CHECK                            => 'archive-check';
    push @EXPORT, qw(OPTION_BACKUP_ARCHIVE_CHECK);
use constant OPTION_BACKUP_ARCHIVE_COPY                             => 'archive-copy';
    push @EXPORT, qw(OPTION_BACKUP_ARCHIVE_COPY);
use constant OPTION_BACKUP_CMD                                      => 'backup-cmd';
    push @EXPORT, qw(OPTION_BACKUP_CMD);
use constant OPTION_BACKUP_CONFIG                                   => 'backup-config';
    push @EXPORT, qw(OPTION_BACKUP_CONFIG);
use constant OPTION_BACKUP_HOST                                     => 'backup-host';
    push @EXPORT, qw(OPTION_BACKUP_HOST);
use constant OPTION_BACKUP_STANDBY                                  => 'backup-standby';
    push @EXPORT, qw(OPTION_BACKUP_STANDBY);
use constant OPTION_BACKUP_USER                                     => 'backup-user';
    push @EXPORT, qw(OPTION_BACKUP_USER);
use constant OPTION_HARDLINK                                        => 'hardlink';
    push @EXPORT, qw(OPTION_HARDLINK);
use constant OPTION_MANIFEST_SAVE_THRESHOLD                         => 'manifest-save-threshold';
    push @EXPORT, qw(OPTION_MANIFEST_SAVE_THRESHOLD);
use constant OPTION_RESUME                                          => 'resume';
    push @EXPORT, qw(OPTION_RESUME);
use constant OPTION_START_FAST                                      => 'start-fast';
    push @EXPORT, qw(OPTION_START_FAST);
use constant OPTION_STOP_AUTO                                       => 'stop-auto';
    push @EXPORT, qw(OPTION_STOP_AUTO);

# EXPIRE Section
#-----------------------------------------------------------------------------------------------------------------------------------
use constant OPTION_RETENTION_ARCHIVE                               => 'retention-archive';
    push @EXPORT, qw(OPTION_RETENTION_ARCHIVE);
use constant OPTION_RETENTION_ARCHIVE_TYPE                          => 'retention-archive-type';
    push @EXPORT, qw(OPTION_RETENTION_ARCHIVE_TYPE);
use constant OPTION_RETENTION_DIFF                                  => 'retention-' . BACKUP_TYPE_DIFF;
    push @EXPORT, qw(OPTION_RETENTION_DIFF);
use constant OPTION_RETENTION_FULL                                  => 'retention-' . BACKUP_TYPE_FULL;
    push @EXPORT, qw(OPTION_RETENTION_FULL);

# RESTORE Section
#-----------------------------------------------------------------------------------------------------------------------------------
use constant OPTION_DB_INCLUDE                                      => 'db-include';
    push @EXPORT, qw(OPTION_DB_INCLUDE);
use constant OPTION_LINK_ALL                                        => 'link-all';
    push @EXPORT, qw(OPTION_LINK_ALL);
use constant OPTION_LINK_MAP                                        => 'link-map';
    push @EXPORT, qw(OPTION_LINK_MAP);
use constant OPTION_TABLESPACE_MAP_ALL                              => 'tablespace-map-all';
    push @EXPORT, qw(OPTION_TABLESPACE_MAP_ALL);
use constant OPTION_TABLESPACE_MAP                                  => 'tablespace-map';
    push @EXPORT, qw(OPTION_TABLESPACE_MAP);
use constant OPTION_RESTORE_RECOVERY_OPTION                         => 'recovery-option';
    push @EXPORT, qw(OPTION_RESTORE_RECOVERY_OPTION);

# STANZA Section
#-----------------------------------------------------------------------------------------------------------------------------------
use constant OPTION_PREFIX_DB                                       => 'db';
    push @EXPORT, qw(OPTION_PREFIX_DB);

use constant OPTION_DB_CMD                                          => OPTION_PREFIX_DB . '-cmd';
    push @EXPORT, qw(OPTION_DB_CMD);
use constant OPTION_DB_CONFIG                                       => OPTION_PREFIX_DB . '-config';
    push @EXPORT, qw(OPTION_DB_CONFIG);
use constant OPTION_DB_HOST                                         => OPTION_PREFIX_DB . '-host';
    push @EXPORT, qw(OPTION_DB_HOST);
use constant OPTION_DB_PATH                                         => OPTION_PREFIX_DB . '-path';
    push @EXPORT, qw(OPTION_DB_PATH);
use constant OPTION_DB_PORT                                         => OPTION_PREFIX_DB . '-port';
    push @EXPORT, qw(OPTION_DB_PORT);
use constant OPTION_DB_SOCKET_PATH                                  => OPTION_PREFIX_DB . '-socket-path';
    push @EXPORT, qw(OPTION_DB_SOCKET_PATH);
use constant OPTION_DB_USER                                         => OPTION_PREFIX_DB . '-user';
    push @EXPORT, qw(OPTION_DB_USER);

####################################################################################################################################
# Option Defaults
####################################################################################################################################

# Command-line only
#-----------------------------------------------------------------------------------------------------------------------------------
use constant OPTION_DEFAULT_BACKUP_TYPE                             => BACKUP_TYPE_INCR;
    push @EXPORT, qw(OPTION_DEFAULT_BACKUP_TYPE);
use constant OPTION_DEFAULT_INFO_OUTPUT                             => INFO_OUTPUT_TEXT;
    push @EXPORT, qw(OPTION_DEFAULT_INFO_OUTPUT);
use constant OPTION_DEFAULT_RESTORE_DELTA                           => false;
    push @EXPORT, qw(OPTION_DEFAULT_RESTORE_DELTA);
use constant OPTION_DEFAULT_RESTORE_FORCE                           => false;
    push @EXPORT, qw(OPTION_DEFAULT_RESTORE_FORCE);
use constant OPTION_DEFAULT_RESTORE_SET                             => 'latest';
    push @EXPORT, qw(OPTION_DEFAULT_RESTORE_SET);
use constant OPTION_DEFAULT_RESTORE_TARGET_EXCLUSIVE                => false;
    push @EXPORT, qw(OPTION_DEFAULT_RESTORE_TARGET_EXCLUSIVE);
use constant OPTION_DEFAULT_RESTORE_TARGET_ACTION                   => RECOVERY_ACTION_PAUSE;
    push @EXPORT, qw(OPTION_DEFAULT_RESTORE_TARGET_ACTION);
use constant OPTION_DEFAULT_RESTORE_TYPE                            => RECOVERY_TYPE_DEFAULT;
    push @EXPORT, qw(OPTION_DEFAULT_RESTORE_TYPE);
use constant OPTION_DEFAULT_LOCK                                    => true;
    push @EXPORT, qw(OPTION_DEFAULT_LOCK);

# Command-line only test
#-----------------------------------------------------------------------------------------------------------------------------------
use constant OPTION_DEFAULT_TEST                                    => false;
    push @EXPORT, qw(OPTION_DEFAULT_TEST);
use constant OPTION_DEFAULT_TEST_DELAY                              => 5;
    push @EXPORT, qw(OPTION_DEFAULT_TEST_DELAY);
use constant OPTION_DEFAULT_TEST_NO_FORK                            => false;
    push @EXPORT, qw(OPTION_DEFAULT_TEST_NO_FORK);

# GENERAL Section
#-----------------------------------------------------------------------------------------------------------------------------------
use constant OPTION_DEFAULT_ARCHIVE_TIMEOUT                         => 60;
    push @EXPORT, qw(OPTION_DEFAULT_ARCHIVE_TIMEOUT);
use constant OPTION_DEFAULT_ARCHIVE_TIMEOUT_MIN                     => WAIT_TIME_MINIMUM;
    push @EXPORT, qw(OPTION_DEFAULT_ARCHIVE_TIMEOUT_MIN);
use constant OPTION_DEFAULT_ARCHIVE_TIMEOUT_MAX                     => 86400;
    push @EXPORT, qw(OPTION_DEFAULT_ARCHIVE_TIMEOUT_MAX);

use constant OPTION_DEFAULT_BUFFER_SIZE                             => 4194304;
    push @EXPORT, qw(OPTION_DEFAULT_BUFFER_SIZE);
use constant OPTION_DEFAULT_BUFFER_SIZE_MIN                         => 16384;
    push @EXPORT, qw(OPTION_DEFAULT_BUFFER_SIZE_MIN);
use constant OPTION_DEFAULT_BUFFER_SIZE_MAX                         => 8388608;
    push @EXPORT, qw(OPTION_DEFAULT_BUFFER_SIZE_MAX);

use constant OPTION_DEFAULT_COMPRESS                                => true;
    push @EXPORT, qw(OPTION_DEFAULT_COMPRESS);

use constant OPTION_DEFAULT_COMPRESS_LEVEL                          => 6;
    push @EXPORT, qw(OPTION_DEFAULT_COMPRESS_LEVEL);
use constant OPTION_DEFAULT_COMPRESS_LEVEL_MIN                      => 0;
    push @EXPORT, qw(OPTION_DEFAULT_COMPRESS_LEVEL_MIN);
use constant OPTION_DEFAULT_COMPRESS_LEVEL_MAX                      => 9;
    push @EXPORT, qw(OPTION_DEFAULT_COMPRESS_LEVEL_MAX);

use constant OPTION_DEFAULT_COMPRESS_LEVEL_NETWORK                  => 3;
    push @EXPORT, qw(OPTION_DEFAULT_COMPRESS_LEVEL_NETWORK);
use constant OPTION_DEFAULT_COMPRESS_LEVEL_NETWORK_MIN              => 0;
    push @EXPORT, qw(OPTION_DEFAULT_COMPRESS_LEVEL_NETWORK_MIN);
use constant OPTION_DEFAULT_COMPRESS_LEVEL_NETWORK_MAX              => 9;
    push @EXPORT, qw(OPTION_DEFAULT_COMPRESS_LEVEL_NETWORK_MAX);

use constant OPTION_DEFAULT_DB_TIMEOUT                              => 1800;
    push @EXPORT, qw(OPTION_DEFAULT_DB_TIMEOUT);
use constant OPTION_DEFAULT_DB_TIMEOUT_MIN                          => WAIT_TIME_MINIMUM;
    push @EXPORT, qw(OPTION_DEFAULT_DB_TIMEOUT_MIN);
use constant OPTION_DEFAULT_DB_TIMEOUT_MAX                          => 86400 * 7;
    push @EXPORT, qw(OPTION_DEFAULT_DB_TIMEOUT_MAX);

use constant OPTION_DEFAULT_PROTOCOL_TIMEOUT                        => OPTION_DEFAULT_DB_TIMEOUT + 30;
    push @EXPORT, qw(OPTION_DEFAULT_PROTOCOL_TIMEOUT);
use constant OPTION_DEFAULT_PROTOCOL_TIMEOUT_MIN                    => OPTION_DEFAULT_DB_TIMEOUT_MIN;
    push @EXPORT, qw(OPTION_DEFAULT_PROTOCOL_TIMEOUT_MIN);
use constant OPTION_DEFAULT_PROTOCOL_TIMEOUT_MAX                    => OPTION_DEFAULT_DB_TIMEOUT_MAX;
    push @EXPORT, qw(OPTION_DEFAULT_PROTOCOL_TIMEOUT_MAX);

use constant OPTION_DEFAULT_CONFIG                                  => '/etc/' . BACKREST_CONF;
    push @EXPORT, qw(OPTION_DEFAULT_CONFIG);
use constant OPTION_DEFAULT_LOCK_PATH                               => '/tmp/' . BACKREST_EXE;
    push @EXPORT, qw(OPTION_DEFAULT_LOCK_PATH);
use constant OPTION_DEFAULT_LOG_PATH                                => '/var/log/' . BACKREST_EXE;
    push @EXPORT, qw(OPTION_DEFAULT_LOG_PATH);
use constant OPTION_DEFAULT_NEUTRAL_UMASK                           => true;
    push @EXPORT, qw(OPTION_DEFAULT_NEUTRAL_UMASK);
use constant OPTION_DEFAULT_REPO_PATH                               => '/var/lib/' . BACKREST_EXE;
    push @EXPORT, qw(OPTION_DEFAULT_REPO_PATH);
use constant OPTION_DEFAULT_SPOOL_PATH                              => '/var/spool/' . BACKREST_EXE;
    push @EXPORT, qw(OPTION_DEFAULT_SPOOL_PATH);
use constant OPTION_DEFAULT_PROCESS_MAX                              => 1;
    push @EXPORT, qw(OPTION_DEFAULT_PROCESS_MAX);
use constant OPTION_DEFAULT_PROCESS_MAX_MIN                          => 1;
    push @EXPORT, qw(OPTION_DEFAULT_PROCESS_MAX_MIN);
use constant OPTION_DEFAULT_PROCESS_MAX_MAX                          => 96;
    push @EXPORT, qw(OPTION_DEFAULT_PROCESS_MAX_MAX);

# LOG Section
#-----------------------------------------------------------------------------------------------------------------------------------
use constant OPTION_DEFAULT_LOG_LEVEL_CONSOLE                       => lc(WARN);
    push @EXPORT, qw(OPTION_DEFAULT_LOG_LEVEL_CONSOLE);
use constant OPTION_DEFAULT_LOG_LEVEL_FILE                          => lc(INFO);
    push @EXPORT, qw(OPTION_DEFAULT_LOG_LEVEL_FILE);

# ARCHIVE SECTION
#-----------------------------------------------------------------------------------------------------------------------------------
use constant OPTION_DEFAULT_ARCHIVE_ASYNC                           => false;
    push @EXPORT, qw(OPTION_DEFAULT_ARCHIVE_ASYNC);

# BACKUP Section
#-----------------------------------------------------------------------------------------------------------------------------------
use constant OPTION_DEFAULT_BACKUP_ARCHIVE_CHECK                    => true;
    push @EXPORT, qw(OPTION_DEFAULT_BACKUP_ARCHIVE_CHECK);
use constant OPTION_DEFAULT_BACKUP_ARCHIVE_COPY                     => false;
    push @EXPORT, qw(OPTION_DEFAULT_BACKUP_ARCHIVE_COPY);
use constant OPTION_DEFAULT_BACKUP_FORCE                            => false;
    push @EXPORT, qw(OPTION_DEFAULT_BACKUP_FORCE);
use constant OPTION_DEFAULT_BACKUP_HARDLINK                         => false;
    push @EXPORT, qw(OPTION_DEFAULT_BACKUP_HARDLINK);
use constant OPTION_DEFAULT_BACKUP_ONLINE                           => true;
    push @EXPORT, qw(OPTION_DEFAULT_BACKUP_ONLINE);
use constant OPTION_DEFAULT_BACKUP_MANIFEST_SAVE_THRESHOLD          => 1073741824;
    push @EXPORT, qw(OPTION_DEFAULT_BACKUP_MANIFEST_SAVE_THRESHOLD);
use constant OPTION_DEFAULT_BACKUP_RESUME                           => true;
    push @EXPORT, qw(OPTION_DEFAULT_BACKUP_RESUME);
use constant OPTION_DEFAULT_BACKUP_STANDBY                          => false;
    push @EXPORT, qw(OPTION_DEFAULT_BACKUP_STANDBY);
use constant OPTION_DEFAULT_BACKUP_STOP_AUTO                        => false;
    push @EXPORT, qw(OPTION_DEFAULT_BACKUP_STOP_AUTO);
use constant OPTION_DEFAULT_BACKUP_START_FAST                       => false;
    push @EXPORT, qw(OPTION_DEFAULT_BACKUP_START_FAST);
use constant OPTION_DEFAULT_BACKUP_USER                             => 'backrest';
    push @EXPORT, qw(OPTION_DEFAULT_BACKUP_USER);

# START/STOP Section
#-----------------------------------------------------------------------------------------------------------------------------------
use constant OPTION_DEFAULT_STOP_FORCE                              => false;
    push @EXPORT, qw(OPTION_DEFAULT_STOP_FORCE);

# EXPIRE Section
#-----------------------------------------------------------------------------------------------------------------------------------
use constant OPTION_DEFAULT_RETENTION_ARCHIVE_TYPE                  => BACKUP_TYPE_FULL;
    push @EXPORT, qw(OPTION_DEFAULT_RETENTION_ARCHIVE_TYPE);
use constant OPTION_DEFAULT_RETENTION_MIN                           => 1;
    push @EXPORT, qw(OPTION_DEFAULT_RETENTION_MIN);
use constant OPTION_DEFAULT_RETENTION_MAX                           => 999999999;
    push @EXPORT, qw(OPTION_DEFAULT_RETENTION_MAX);

# RESTORE Section
#-----------------------------------------------------------------------------------------------------------------------------------
use constant OPTION_DEFAULT_LINK_ALL                                => false;
    push @EXPORT, qw(OPTION_DEFAULT_LINK_ALL);

# STANZA Section
#-----------------------------------------------------------------------------------------------------------------------------------
use constant OPTION_DEFAULT_DB_PORT                                 => 5432;
    push @EXPORT, qw(OPTION_DEFAULT_DB_PORT);
use constant OPTION_DEFAULT_DB_USER                                 => 'postgres';
    push @EXPORT, qw(OPTION_DEFAULT_DB_USER);

####################################################################################################################################
# Option Rule Hash
#
# Contains the rules for options: which commands the option can/cannot be specified, for which commands it is required, default
# settings, types, ranges, whether the option is negatable, whether it has dependencies, etc. The initial section is the global
# section meaning the rules defined there apply to all commands listed for the option.
#
# OPTION_RULE_COMMAND: List of commands the option can or cannot be specified.
#   true - the option is valid and can be specified
#         &OPTION_RULE_COMMAND =>
#         {
# 	        &CMD_CHECK => true,
#   false - used in conjuntion with OPTION_RULE_DEFAULT so the user cannot override this option. If the option is provided for the
#           command by the user, it will be ignored and the default will be used.
#
# OPTION_RULE_REQUIRED:
#   In global section:
#       true - if the option does not have a default, then setting OPTION_RULE_REQUIRED in the global section means all commands
#              listed in OPTION_RULE_COMMAND require the user to set it.
#       false - no commands listed require it as an option but it can be set. This can be overridden for individual commands by
#               setting OPTION_RULE_REQUIRED in the OPTION_RULE_COMMAND section.
#   In OPTION_RULE_COMMAND section:
#       true - the option must be set somehow for the command, either by default (OPTION_RULE_DEFAULT) or by the user.
# 	        &CMD_CHECK =>
#             {
#                 &OPTION_RULE_REQUIRED => true
#             },
#       false - mainly used for overriding the OPTION_RULE_REQUIRED in the global section.
#
# OPTION_RULE_DEFAULT:
#   Sets a default for the option for all commands if listed in the global section, or for specific commands if listed in the
#   OPTION_RULE_COMMAND section.
#
# OPTION_RULE_NEGATE:
#   The option can be negated with "no" e.g. --no-lock.
#
# OPTION_RULE_DEPEND:
#   Specify the dependencies this option has on another option.
#   OPTION_RULE_DEPEND_LIST further defines the allowable settings for the depended option.
#
# OPTION_RULE_ALLOW_LIST:
#   Lists the allowable settings for the option.
####################################################################################################################################
my %oOptionRule =
(
    # Command-line only
    #-------------------------------------------------------------------------------------------------------------------------------
    &OPTION_CONFIG =>
    {
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_CONFIG,
        &OPTION_RULE_NEGATE => true,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_GET => true,
            &CMD_ARCHIVE_PUSH => true,
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_EXPIRE => true,
            &CMD_INFO => true,
            &CMD_LOCAL => true,
            &CMD_REMOTE => true,
            &CMD_RESTORE => true,
            &CMD_START => true,
            &CMD_STOP => true
        }
    },

    &OPTION_DELTA =>
    {
        &OPTION_RULE_TYPE => OPTION_TYPE_BOOLEAN,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_RESTORE =>
            {
                &OPTION_RULE_DEFAULT => OPTION_DEFAULT_RESTORE_DELTA,
            }
        }
    },

    &OPTION_FORCE =>
    {
        &OPTION_RULE_TYPE => OPTION_TYPE_BOOLEAN,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP =>
            {
                &OPTION_RULE_DEFAULT => OPTION_DEFAULT_BACKUP_FORCE,
                &OPTION_RULE_DEPEND =>
                {
                    &OPTION_RULE_DEPEND_OPTION  => OPTION_ONLINE,
                    &OPTION_RULE_DEPEND_VALUE   => false
                }
            },

            &CMD_RESTORE =>
            {
                &OPTION_RULE_DEFAULT => OPTION_DEFAULT_RESTORE_FORCE,
            },

            &CMD_STOP =>
            {
                &OPTION_RULE_DEFAULT => OPTION_DEFAULT_STOP_FORCE
            }
        }
    },

    &OPTION_LOCK =>
    {
        &OPTION_RULE_TYPE => OPTION_TYPE_BOOLEAN,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_LOCK,
        &OPTION_RULE_NEGATE => true,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_RESTORE => true
        }
    },

    &OPTION_ONLINE =>
    {
        &OPTION_RULE_TYPE => OPTION_TYPE_BOOLEAN,
        &OPTION_RULE_NEGATE => true,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_BACKUP_ONLINE,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
        }
    },

    &OPTION_SET =>
    {
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_RESTORE =>
            {
                &OPTION_RULE_DEFAULT => OPTION_DEFAULT_RESTORE_SET,
            }
        }
    },

    &OPTION_STANZA =>
    {
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_GET =>
            {
                &OPTION_RULE_REQUIRED => true
            },
            &CMD_ARCHIVE_PUSH =>
            {
                &OPTION_RULE_REQUIRED => true
            },
            &CMD_BACKUP =>
            {
                &OPTION_RULE_REQUIRED => true
            },
            &CMD_CHECK =>
            {
                &OPTION_RULE_REQUIRED => true
            },
            &CMD_EXPIRE =>
            {
                &OPTION_RULE_REQUIRED => true
            },
            &CMD_INFO =>
            {
                &OPTION_RULE_REQUIRED => false
            },
            &CMD_LOCAL =>
            {
                &OPTION_RULE_REQUIRED => true
            },
            &CMD_REMOTE =>
            {
                &OPTION_RULE_REQUIRED => false
            },
            &CMD_RESTORE =>
            {
                &OPTION_RULE_REQUIRED => true
            },
            &CMD_START =>
            {
                &OPTION_RULE_REQUIRED => false
            },
            &CMD_STOP =>
            {
                &OPTION_RULE_REQUIRED => false
            }
        }
    },

    &OPTION_TARGET =>
    {
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_RESTORE =>
            {
                &OPTION_RULE_DEPEND =>
                {
                    &OPTION_RULE_DEPEND_OPTION => OPTION_TYPE,
                    &OPTION_RULE_DEPEND_LIST =>
                    {
                        &RECOVERY_TYPE_NAME => true,
                        &RECOVERY_TYPE_TIME => true,
                        &RECOVERY_TYPE_XID  => true
                    }
                }
            }
        }
    },

    &OPTION_TARGET_EXCLUSIVE =>
    {
        &OPTION_RULE_TYPE => OPTION_TYPE_BOOLEAN,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_RESTORE =>
            {
                &OPTION_RULE_DEFAULT => OPTION_DEFAULT_RESTORE_TARGET_EXCLUSIVE,
                &OPTION_RULE_DEPEND =>
                {
                    &OPTION_RULE_DEPEND_OPTION => OPTION_TYPE,
                    &OPTION_RULE_DEPEND_LIST =>
                    {
                        &RECOVERY_TYPE_TIME => true,
                        &RECOVERY_TYPE_XID  => true
                    }
                }
            }
        }
    },

    &OPTION_TARGET_ACTION =>
    {
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_RESTORE =>
            {
                &OPTION_RULE_DEFAULT => OPTION_DEFAULT_RESTORE_TARGET_ACTION,
                &OPTION_RULE_DEPEND =>
                {
                    &OPTION_RULE_DEPEND_OPTION => OPTION_TYPE,
                    &OPTION_RULE_DEPEND_LIST =>
                    {
                        &RECOVERY_TYPE_NAME => true,
                        &RECOVERY_TYPE_TIME => true,
                        &RECOVERY_TYPE_XID  => true
                    }
                }
            }
        }
    },

    &OPTION_TARGET_TIMELINE =>
    {
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_RESTORE =>
            {
                &OPTION_RULE_REQUIRED => false,
                &OPTION_RULE_DEPEND =>
                {
                    &OPTION_RULE_DEPEND_OPTION => OPTION_TYPE,
                    &OPTION_RULE_DEPEND_LIST =>
                    {
                        &RECOVERY_TYPE_DEFAULT  => true,
                        &RECOVERY_TYPE_NAME     => true,
                        &RECOVERY_TYPE_TIME     => true,
                        &RECOVERY_TYPE_XID      => true
                    }
                }
            }
        }
    },

    &OPTION_TYPE =>
    {
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP =>
            {
                &OPTION_RULE_DEFAULT => OPTION_DEFAULT_BACKUP_TYPE,
                &OPTION_RULE_ALLOW_LIST =>
                {
                    &BACKUP_TYPE_FULL => true,
                    &BACKUP_TYPE_DIFF => true,
                    &BACKUP_TYPE_INCR => true,
                }
            },

            &CMD_LOCAL =>
            {
                &OPTION_RULE_ALLOW_LIST =>
                {
                    &DB                      => true,
                    &BACKUP                  => true,
                },
            },

            &CMD_REMOTE =>
            {
                &OPTION_RULE_ALLOW_LIST =>
                {
                    &DB                      => true,
                    &BACKUP                  => true,
                },
            },

            &CMD_RESTORE =>
            {
                &OPTION_RULE_DEFAULT => OPTION_DEFAULT_RESTORE_TYPE,
                &OPTION_RULE_ALLOW_LIST =>
                {
                    &RECOVERY_TYPE_NAME      => true,
                    &RECOVERY_TYPE_TIME      => true,
                    &RECOVERY_TYPE_XID       => true,
                    &RECOVERY_TYPE_PRESERVE  => true,
                    &RECOVERY_TYPE_NONE      => true,
                    &RECOVERY_TYPE_IMMEDIATE => true,
                    &RECOVERY_TYPE_DEFAULT   => true
                }
            }
        }
    },

    &OPTION_OUTPUT =>
    {
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_INFO =>
            {
                &OPTION_RULE_DEFAULT => OPTION_DEFAULT_INFO_OUTPUT,
                &OPTION_RULE_ALLOW_LIST =>
                {
                    &INFO_OUTPUT_TEXT => true,
                    &INFO_OUTPUT_JSON => true
                }
            }
        }
    },

    # Command-line only local/remote
    #-------------------------------------------------------------------------------------------------------------------------------
    &OPTION_COMMAND =>
    {
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_LOCAL => true,
            &CMD_REMOTE => true,
        }
    },

    &OPTION_HOST_ID =>
    {
        &OPTION_RULE_TYPE => OPTION_TYPE_INTEGER,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_LOCAL => true,
        },
    },

    &OPTION_PROCESS =>
    {
        &OPTION_RULE_TYPE => OPTION_TYPE_INTEGER,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_LOCAL =>
            {
                &OPTION_RULE_REQUIRED => true,
            },
            &CMD_REMOTE =>
            {
                &OPTION_RULE_REQUIRED => false,
            },
        },
    },

    # Command-line only test
    #-------------------------------------------------------------------------------------------------------------------------------
    &OPTION_TEST =>
    {
        &OPTION_RULE_TYPE => OPTION_TYPE_BOOLEAN,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_TEST,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_PUSH => true,
            &CMD_BACKUP => true
        }
    },

    &OPTION_TEST_DELAY =>
    {
        &OPTION_RULE_TYPE => OPTION_TYPE_FLOAT,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_TEST_DELAY,
        &OPTION_RULE_DEPEND =>
        {
            &OPTION_RULE_DEPEND_OPTION => OPTION_TEST,
            &OPTION_RULE_DEPEND_VALUE => true
        },
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_PUSH => true,
            &CMD_BACKUP => true
        }
    },

    &OPTION_TEST_POINT =>
    {
        &OPTION_RULE_TYPE => OPTION_TYPE_HASH,
        &OPTION_RULE_REQUIRED => false,
        &OPTION_RULE_DEPEND =>
        {
            &OPTION_RULE_DEPEND_OPTION => OPTION_TEST,
            &OPTION_RULE_DEPEND_VALUE => true
        },
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_PUSH => true,
            &CMD_BACKUP => true
        }
    },

    &OPTION_TEST_NO_FORK =>
    {
        &OPTION_RULE_TYPE => OPTION_TYPE_BOOLEAN,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_TEST_NO_FORK,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_PUSH => true
        }
    },

    # GENERAL Section
    #-------------------------------------------------------------------------------------------------------------------------------
    &OPTION_ARCHIVE_TIMEOUT =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_FLOAT,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_ARCHIVE_TIMEOUT,
        &OPTION_RULE_ALLOW_RANGE => [OPTION_DEFAULT_ARCHIVE_TIMEOUT_MIN, OPTION_DEFAULT_ARCHIVE_TIMEOUT_MAX],
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
        },
    },

    &OPTION_BUFFER_SIZE =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_INTEGER,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_BUFFER_SIZE,
        &OPTION_RULE_ALLOW_RANGE => [OPTION_DEFAULT_BUFFER_SIZE_MIN, OPTION_DEFAULT_BUFFER_SIZE_MAX],
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_GET => true,
            &CMD_ARCHIVE_PUSH => true,
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_EXPIRE => false,
            &CMD_INFO => true,
            &CMD_LOCAL => true,
            &CMD_REMOTE => true,
            &CMD_RESTORE => true
        }
    },

    &OPTION_DB_TIMEOUT =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_FLOAT,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_DB_TIMEOUT,
        &OPTION_RULE_ALLOW_RANGE => [OPTION_DEFAULT_DB_TIMEOUT_MIN, OPTION_DEFAULT_DB_TIMEOUT_MAX],
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_GET => false,
            &CMD_ARCHIVE_PUSH => false,
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_EXPIRE => false,
            &CMD_INFO => false,
            &CMD_LOCAL => true,
            &CMD_REMOTE => true,
            &CMD_RESTORE => false
        }
    },

    &OPTION_COMPRESS =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_BOOLEAN,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_COMPRESS,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_GET => true,
            &CMD_ARCHIVE_PUSH => true,
            &CMD_BACKUP => true,
            &CMD_EXPIRE => false,
            &CMD_RESTORE => true
        }
    },

    &OPTION_COMPRESS_LEVEL =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_INTEGER,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_COMPRESS_LEVEL,
        &OPTION_RULE_ALLOW_RANGE => [OPTION_DEFAULT_COMPRESS_LEVEL_MIN, OPTION_DEFAULT_COMPRESS_LEVEL_MAX],
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_GET => true,
            &CMD_ARCHIVE_PUSH => true,
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_EXPIRE => false,
            &CMD_INFO => true,
            &CMD_LOCAL => true,
            &CMD_REMOTE => true,
            &CMD_RESTORE => true
        }
    },

    &OPTION_COMPRESS_LEVEL_NETWORK =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_INTEGER,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_COMPRESS_LEVEL_NETWORK,
        &OPTION_RULE_ALLOW_RANGE => [OPTION_DEFAULT_COMPRESS_LEVEL_NETWORK_MIN, OPTION_DEFAULT_COMPRESS_LEVEL_NETWORK_MAX],
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_GET => true,
            &CMD_ARCHIVE_PUSH => true,
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_EXPIRE => false,
            &CMD_INFO => true,
            &CMD_LOCAL => true,
            &CMD_REMOTE => true,
            &CMD_RESTORE => true
        }
    },

    &OPTION_NEUTRAL_UMASK =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_BOOLEAN,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_NEUTRAL_UMASK,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_GET => true,
            &CMD_ARCHIVE_PUSH => true,
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_INFO => false,
            &CMD_EXPIRE => false,
            &CMD_LOCAL => true,
            &CMD_REMOTE => true,
            &CMD_RESTORE => true,
            &CMD_START => false,
            &CMD_STOP => false
        }
    },

    &OPTION_LOCK_PATH =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_LOCK_PATH,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_GET => true,
            &CMD_ARCHIVE_PUSH => true,
            &CMD_BACKUP => true,
            &CMD_INFO => true,
            &CMD_LOCAL => true,
            &CMD_REMOTE => true,
            &CMD_RESTORE => true,
            &CMD_START => true,
            &CMD_STOP => true,
            &CMD_EXPIRE => true
        },
    },

    &OPTION_LOG_PATH =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_LOG_PATH,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_GET => true,
            &CMD_ARCHIVE_PUSH => true,
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_INFO => true,
            &CMD_LOCAL => true,
            &CMD_REMOTE => true,
            &CMD_RESTORE => true,
            &CMD_START => true,
            &CMD_STOP => true,
            &CMD_EXPIRE => true
        },
    },

    &OPTION_PROTOCOL_TIMEOUT =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_FLOAT,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_PROTOCOL_TIMEOUT,
        &OPTION_RULE_ALLOW_RANGE => [OPTION_DEFAULT_PROTOCOL_TIMEOUT_MIN, OPTION_DEFAULT_PROTOCOL_TIMEOUT_MAX],
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_GET => true,
            &CMD_ARCHIVE_PUSH => true,
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_EXPIRE => false,
            &CMD_INFO => true,
            &CMD_LOCAL => true,
            &CMD_REMOTE => true,
            &CMD_RESTORE => true
        }
    },

    &OPTION_REPO_PATH =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_REPO_PATH,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_GET => true,
            &CMD_ARCHIVE_PUSH => true,
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_INFO => true,
            &CMD_LOCAL => true,
            &CMD_REMOTE => true,
            &CMD_RESTORE => true,
            &CMD_START => true,
            &CMD_STOP => true,
            &CMD_EXPIRE => true
        },
    },

    &OPTION_SPOOL_PATH =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_SPOOL_PATH,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_PUSH => true
        },
        &OPTION_RULE_DEPEND =>
        {
            &OPTION_RULE_DEPEND_OPTION  => OPTION_ARCHIVE_ASYNC,
            &OPTION_RULE_DEPEND_VALUE   => true
        },
    },

    &OPTION_PROCESS_MAX =>
    {
        &OPTION_RULE_ALT_NAME => 'thread-max',
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_INTEGER,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_PROCESS_MAX,
        &OPTION_RULE_ALLOW_RANGE => [OPTION_DEFAULT_PROCESS_MAX_MIN, OPTION_DEFAULT_PROCESS_MAX_MAX],
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP => true,
            &CMD_RESTORE => true
        }
    },

    # LOG Section
    #-------------------------------------------------------------------------------------------------------------------------------
    &OPTION_LOG_LEVEL_CONSOLE =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_LOG_LEVEL_CONSOLE,
        &OPTION_RULE_ALLOW_LIST =>
        {
            lc(OFF)    => true,
            lc(ERROR)  => true,
            lc(WARN)   => true,
            lc(INFO)   => true,
            lc(DETAIL) => true,
            lc(DEBUG)  => true,
            lc(TRACE)  => true
        },
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_GET => true,
            &CMD_ARCHIVE_PUSH => true,
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_EXPIRE => true,
            &CMD_INFO => true,
            &CMD_RESTORE => true,
            &CMD_START => true,
            &CMD_STOP => true
        }
    },

    &OPTION_LOG_LEVEL_FILE =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_LOG_LEVEL_FILE,
        &OPTION_RULE_ALLOW_LIST =>
        {
            lc(OFF)    => true,
            lc(ERROR)  => true,
            lc(WARN)   => true,
            lc(INFO)   => true,
            lc(DEBUG)  => true,
            lc(DETAIL) => true,
            lc(TRACE)  => true
        },
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_GET => true,
            &CMD_ARCHIVE_PUSH => true,
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_EXPIRE => true,
            &CMD_INFO => true,
            &CMD_RESTORE => true,
            &CMD_START => true,
            &CMD_STOP => true
        }
    },

    # ARCHIVE Section
    #-------------------------------------------------------------------------------------------------------------------------------
    &OPTION_ARCHIVE_ASYNC =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_BOOLEAN,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_ARCHIVE_ASYNC,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_PUSH => true
        }
    },

    &OPTION_ARCHIVE_MAX_MB =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_INTEGER,
        &OPTION_RULE_REQUIRED => false,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_PUSH => true
        }
    },

    # BACKUP Section
    #-------------------------------------------------------------------------------------------------------------------------------
    &OPTION_BACKUP_ARCHIVE_CHECK =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_BOOLEAN,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_BACKUP_ARCHIVE_CHECK,
        &OPTION_RULE_DEPEND =>
        {
            &OPTION_RULE_DEPEND_OPTION  => OPTION_ONLINE,
            &OPTION_RULE_DEPEND_VALUE   => true,
        },
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
        },
    },

    &OPTION_BACKUP_ARCHIVE_COPY =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_BOOLEAN,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_BACKUP_ARCHIVE_COPY,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP =>
            {
                &OPTION_RULE_DEPEND =>
                {
                    &OPTION_RULE_DEPEND_OPTION  => OPTION_BACKUP_ARCHIVE_CHECK,
                    &OPTION_RULE_DEPEND_VALUE   => true
                }
            }
        }
    },

    &OPTION_BACKUP_CMD =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_DEFAULT => BACKREST_BIN,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_GET => true,
            &CMD_ARCHIVE_PUSH => true,
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_INFO => true,
            &CMD_LOCAL => true,
            &CMD_RESTORE => true,
            &CMD_START => true,
            &CMD_STOP => true,
        },
        &OPTION_RULE_DEPEND =>
        {
            &OPTION_RULE_DEPEND_OPTION => OPTION_BACKUP_HOST
        },
    },

    &OPTION_BACKUP_CONFIG =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_CONFIG,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_GET => true,
            &CMD_ARCHIVE_PUSH => true,
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_INFO => true,
            &CMD_LOCAL => true,
            &CMD_RESTORE => true,
            &CMD_START => true,
            &CMD_STOP => true,
        },
        &OPTION_RULE_DEPEND =>
        {
            &OPTION_RULE_DEPEND_OPTION => OPTION_BACKUP_HOST
        },
    },

    &OPTION_BACKUP_HOST =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_REQUIRED => false,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_GET => true,
            &CMD_ARCHIVE_PUSH => true,
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_EXPIRE => true,
            &CMD_INFO => true,
            &CMD_LOCAL => true,
            &CMD_RESTORE => true,
            &CMD_START => true,
            &CMD_STOP => true,
        },
    },

    &OPTION_BACKUP_STANDBY =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_BOOLEAN,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_BACKUP_STANDBY,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_REMOTE => true,
        },
    },

    &OPTION_BACKUP_USER =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_BACKUP_USER,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_GET => true,
            &CMD_ARCHIVE_PUSH => true,
            &CMD_CHECK => true,
            &CMD_INFO => true,
            &CMD_LOCAL => true,
            &CMD_RESTORE => true,
            &CMD_START => true,
            &CMD_STOP => true,
        },
        &OPTION_RULE_REQUIRED => false,
        &OPTION_RULE_DEPEND =>
        {
            &OPTION_RULE_DEPEND_OPTION => OPTION_BACKUP_HOST
        }
    },

    &OPTION_HARDLINK =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_BOOLEAN,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_BACKUP_HARDLINK,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP => true
        }
    },

    &OPTION_MANIFEST_SAVE_THRESHOLD =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_INTEGER,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_BACKUP_MANIFEST_SAVE_THRESHOLD,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP => true
        }
    },

    &OPTION_RESUME =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_BOOLEAN,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_BACKUP_RESUME,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP => true
        }
    },

    &OPTION_START_FAST =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_BOOLEAN,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_BACKUP_START_FAST,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP => true
        }
    },

    &OPTION_STOP_AUTO =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_BOOLEAN,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_BACKUP_STOP_AUTO,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP => true
        }
    },

    # EXPIRE Section
    #-------------------------------------------------------------------------------------------------------------------------------
    &OPTION_RETENTION_ARCHIVE =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_INTEGER,
        &OPTION_RULE_REQUIRED => false,
        &OPTION_RULE_ALLOW_RANGE => [OPTION_DEFAULT_RETENTION_MIN, OPTION_DEFAULT_RETENTION_MAX],
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP => true,
            &CMD_EXPIRE => true
        }
    },

    &OPTION_RETENTION_ARCHIVE_TYPE =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_RETENTION_ARCHIVE_TYPE,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP => true,
            &CMD_EXPIRE => true
        },
        &OPTION_RULE_ALLOW_LIST =>
        {
            &BACKUP_TYPE_FULL => 1,
            &BACKUP_TYPE_DIFF => 1,
            &BACKUP_TYPE_INCR => 1
        }
    },

    &OPTION_RETENTION_DIFF =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_INTEGER,
        &OPTION_RULE_REQUIRED => false,
        &OPTION_RULE_ALLOW_RANGE => [OPTION_DEFAULT_RETENTION_MIN, OPTION_DEFAULT_RETENTION_MAX],
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP => true,
            &CMD_EXPIRE => true
        }
    },

    &OPTION_RETENTION_FULL =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_INTEGER,
        &OPTION_RULE_REQUIRED => false,
        &OPTION_RULE_ALLOW_RANGE => [OPTION_DEFAULT_RETENTION_MIN, OPTION_DEFAULT_RETENTION_MAX],
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP => true,
            &CMD_EXPIRE => true
        }
    },

    # RESTORE Section
    #-------------------------------------------------------------------------------------------------------------------------------
    &OPTION_DB_INCLUDE =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_HASH,
        &OPTION_RULE_HASH_VALUE => false,
        &OPTION_RULE_REQUIRED => false,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_RESTORE => true
        },
    },

    &OPTION_LINK_ALL =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_BOOLEAN,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_LINK_ALL,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_RESTORE => true
        }
    },

    &OPTION_LINK_MAP =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_HASH,
        &OPTION_RULE_REQUIRED => false,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_RESTORE => true
        },
    },

    &OPTION_TABLESPACE_MAP_ALL =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_REQUIRED => false,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_RESTORE => true
        }
    },

    &OPTION_TABLESPACE_MAP =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_HASH,
        &OPTION_RULE_REQUIRED => false,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_RESTORE => true
        },
    },

    &OPTION_RESTORE_RECOVERY_OPTION =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_HASH,
        &OPTION_RULE_REQUIRED => false,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_RESTORE => true
        },
        &OPTION_RULE_DEPEND =>
        {
            &OPTION_RULE_DEPEND_OPTION => OPTION_TYPE,
            &OPTION_RULE_DEPEND_LIST =>
            {
                &RECOVERY_TYPE_DEFAULT  => true,
                &RECOVERY_TYPE_NAME     => true,
                &RECOVERY_TYPE_TIME     => true,
                &RECOVERY_TYPE_XID      => true
            }
        }
    },

    # STANZA Section
    #-------------------------------------------------------------------------------------------------------------------------------
    &OPTION_DB_CMD =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_PREFIX => OPTION_PREFIX_DB,
        &OPTION_RULE_DEFAULT => BACKREST_BIN,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_EXPIRE => true,
            &CMD_LOCAL => true,
            &CMD_START => true,
            &CMD_STOP => true,
        },
        &OPTION_RULE_DEPEND =>
        {
            &OPTION_RULE_DEPEND_OPTION => OPTION_DB_HOST
        },
    },

    &OPTION_DB_CONFIG =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_GLOBAL,
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_PREFIX => OPTION_PREFIX_DB,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_CONFIG,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_EXPIRE => true,
            &CMD_LOCAL => true,
            &CMD_START => true,
            &CMD_STOP => true,
        },
        &OPTION_RULE_DEPEND =>
        {
            &OPTION_RULE_DEPEND_OPTION => OPTION_DB_HOST
        },
    },

    &OPTION_DB_HOST =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_STANZA,
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_PREFIX => OPTION_PREFIX_DB,
        &OPTION_RULE_REQUIRED => false,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_EXPIRE => true,
            &CMD_LOCAL => true,
            &CMD_START => true,
            &CMD_STOP => true,
        }
    },

    &OPTION_DB_PATH =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_STANZA,
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_PREFIX => OPTION_PREFIX_DB,
        &OPTION_RULE_REQUIRED => true,
        &OPTION_RULE_HINT => "does this stanza exist?",
        &OPTION_RULE_COMMAND =>
        {
            &CMD_ARCHIVE_GET =>
            {
                &OPTION_RULE_REQUIRED => false
            },
            &CMD_ARCHIVE_PUSH =>
            {
                &OPTION_RULE_REQUIRED => false
            },
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_RESTORE => true,
        },
    },

    &OPTION_DB_PORT =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_STANZA,
        &OPTION_RULE_TYPE => OPTION_TYPE_INTEGER,
        &OPTION_RULE_PREFIX => OPTION_PREFIX_DB,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_DB_PORT,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_REMOTE => true
        }
    },

    &OPTION_DB_SOCKET_PATH =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_STANZA,
        &OPTION_RULE_PREFIX => OPTION_PREFIX_DB,
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_REQUIRED => false,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_LOCAL => true,
            &CMD_REMOTE => true,
        }
    },

    &OPTION_DB_USER =>
    {
        &OPTION_RULE_SECTION => CONFIG_SECTION_STANZA,
        &OPTION_RULE_PREFIX => OPTION_PREFIX_DB,
        &OPTION_RULE_TYPE => OPTION_TYPE_STRING,
        &OPTION_RULE_DEFAULT => OPTION_DEFAULT_DB_USER,
        &OPTION_RULE_COMMAND =>
        {
            &CMD_BACKUP => true,
            &CMD_CHECK => true,
            &CMD_LOCAL => true,
        },
        &OPTION_RULE_REQUIRED => false,
        &OPTION_RULE_DEPEND =>
        {
            &OPTION_RULE_DEPEND_OPTION => OPTION_DB_HOST
        },
    },
);

####################################################################################################################################
# Module variables
####################################################################################################################################
my %oOption;                # Option hash
my $strCommand;             # Command (backup, archive-get, ...)

####################################################################################################################################
# configLoad
#
# Load configuration. Additional conditions that cannot be codified by the OptionRule hash are also tested here.
####################################################################################################################################
sub configLoad
{
    my $bInitLogging = shift;

    # Determine if logging should be initialized
    $bInitLogging = (!defined($bInitLogging) ? true : $bInitLogging);

    # Clear option in case it was loaded before
    %oOption = ();

    # Build options for all possible db configurations
    foreach my $strKey (sort(keys(%oOptionRule)))
    {
        if (defined($oOptionRule{$strKey}{&OPTION_RULE_PREFIX}) && $oOptionRule{$strKey}{&OPTION_RULE_PREFIX} eq OPTION_PREFIX_DB)
        {
            my $strPrefix = $oOptionRule{$strKey}{&OPTION_RULE_PREFIX};

            # For now only allow one replica
            for (my $iIndex = 2; $iIndex <= 2; $iIndex++)
            {
                my $strKeyNew = "${strPrefix}${iIndex}" . substr($strKey, length($strPrefix));

                $oOptionRule{$strKeyNew} = dclone($oOptionRule{$strKey});
                $oOptionRule{$strKeyNew}{&OPTION_RULE_REQUIRED} = false;

                if (defined($oOptionRule{$strKeyNew}{&OPTION_RULE_DEPEND}) &&
                    defined($oOptionRule{$strKeyNew}{&OPTION_RULE_DEPEND}{&OPTION_RULE_DEPEND_OPTION}))
                {
                    $oOptionRule{$strKeyNew}{&OPTION_RULE_DEPEND}{&OPTION_RULE_DEPEND_OPTION} =
                        "${strPrefix}${iIndex}" .
                        substr($oOptionRule{$strKeyNew}{&OPTION_RULE_DEPEND}{&OPTION_RULE_DEPEND_OPTION}, length($strPrefix));
                }
            }

            # Create an alternate name for the base db option
            $oOptionRule{$strKey}{&OPTION_RULE_ALT_NAME} = "${strPrefix}1" . substr($strKey, length($strPrefix));
        }
    }

    # Build hash with all valid command-line options
    my %oOptionAllow;

    foreach my $strKey (keys(%oOptionRule))
    {
        foreach my $bAltName ((false, true))
        {
            my $strOptionName = $strKey;

            if ($bAltName)
            {
                if (!defined($oOptionRule{$strKey}{&OPTION_RULE_ALT_NAME}))
                {
                    next;
                }

                $strOptionName = $oOptionRule{$strKey}{&OPTION_RULE_ALT_NAME};
            }

            my $strOption = $strOptionName;

            if (!defined($oOptionRule{$strKey}{&OPTION_RULE_TYPE}))
            {
                confess  &log(ASSERT, "Option ${strKey} does not have a defined type", ERROR_ASSERT);
            }
            elsif ($oOptionRule{$strKey}{&OPTION_RULE_TYPE} eq OPTION_TYPE_HASH)
            {
                $strOption .= '=s@';
            }
            elsif ($oOptionRule{$strKey}{&OPTION_RULE_TYPE} ne OPTION_TYPE_BOOLEAN)
            {
                $strOption .= '=s';
            }

            $oOptionAllow{$strOption} = $strOption;

            # Check if the option can be negated
            if ((defined($oOptionRule{$strKey}{&OPTION_RULE_NEGATE}) &&
                 $oOptionRule{$strKey}{&OPTION_RULE_NEGATE}) ||
                ($oOptionRule{$strKey}{&OPTION_RULE_TYPE} eq OPTION_TYPE_BOOLEAN &&
                 defined($oOptionRule{$strKey}{&OPTION_RULE_SECTION})))
            {
                $strOption = 'no-' . $strOptionName;
                $oOptionAllow{$strOption} = $strOption;
                $oOptionRule{$strKey}{&OPTION_RULE_NEGATE} = true;
            }
        }
    }

    # Get command-line options
    my %oOptionTest;

    # If nothing was passed on the command line then display help
    if (@ARGV == 0)
    {
        commandSet(CMD_HELP);
    }
    # Else process command line options
    else
    {
        # Parse command line options
        if (!GetOptions(\%oOptionTest, %oOptionAllow))
        {
            commandSet(CMD_HELP);
            return false;
        }

        # Validate and store options
        my $bHelp = false;

        if (defined($ARGV[0]) && $ARGV[0] eq CMD_HELP && defined($ARGV[1]))
        {
            $bHelp = true;
            $ARGV[0] = $ARGV[1];
        }

        optionValidate(\%oOptionTest, $bHelp);

        if ($bHelp)
        {
            commandSet(CMD_HELP);
        }
    }

    # Return and display version and help in main
    if (commandTest(CMD_HELP) || commandTest(CMD_VERSION))
    {
        return true;
    }

    # If this is not the remote and logging is allowed (to not overwrite log levels for tests) then set the log level so that
    # INFO/WARN messages can be displayed (the user may still disable them).
    if (!commandTest(CMD_REMOTE) && !commandTest(CMD_LOCAL) && $bInitLogging)
    {
        logLevelSet(
            optionValid(OPTION_LOG_LEVEL_FILE) ? optionGet(OPTION_LOG_LEVEL_FILE): undef,
            optionValid(OPTION_LOG_LEVEL_CONSOLE) ? optionGet(OPTION_LOG_LEVEL_CONSOLE): undef);
    }

    # Neutralize the umask to make the repository file/path modes more consistent
    if (optionTest(OPTION_NEUTRAL_UMASK) && optionGet(OPTION_NEUTRAL_UMASK))
    {
        umask(0000);
    }

    # Protocol timeout should be greater than db timeout
    if (optionTest(OPTION_DB_TIMEOUT) && optionTest(OPTION_PROTOCOL_TIMEOUT) &&
        optionGet(OPTION_PROTOCOL_TIMEOUT) <= optionGet(OPTION_DB_TIMEOUT))
    {
        # If protocol-timeout is default then increase it to be greater than db-timeout
        if (optionSource(OPTION_PROTOCOL_TIMEOUT) eq SOURCE_DEFAULT)
        {
            optionSet(OPTION_PROTOCOL_TIMEOUT, optionGet(OPTION_DB_TIMEOUT) + 30);
        }
        else
        {
            confess &log(ERROR,
                "'" . optionGet(OPTION_PROTOCOL_TIMEOUT) . "' is not valid for '" . OPTION_PROTOCOL_TIMEOUT . "' option\n" .
                "HINT: 'protocol-timeout' option should be greater than 'db-timeout' option.",
                ERROR_OPTION_INVALID_VALUE);
        }
    }

    # Make sure that backup and db are not both remote
    if (optionTest(OPTION_DB_HOST) && optionTest(OPTION_BACKUP_HOST))
    {
        confess &log(ERROR, 'db and backup cannot both be configured as remote', ERROR_CONFIG);
    }

    # Warn when retention-full is not set
    if (optionValid(OPTION_RETENTION_FULL) && !optionTest(OPTION_RETENTION_FULL))
    {
        &log(WARN,
            "option retention-full is not set, the repository may run out of space\n" .
                "HINT: to retain full backups indefinitely (without warning), set option 'retention-full' to the maximum.");
    }

    # If archive retention is valid for the command, then set archive settings
    if (optionValid(OPTION_RETENTION_ARCHIVE))
    {
        my $strArchiveRetentionType = optionGet(OPTION_RETENTION_ARCHIVE_TYPE, false);
        my $iArchiveRetention = optionGet(OPTION_RETENTION_ARCHIVE, false);
        my $iFullRetention = optionGet(OPTION_RETENTION_FULL, false);
        my $iDifferentialRetention = optionGet(OPTION_RETENTION_DIFF, false);

        my $strMsgArchiveOff = "WAL segments will not be expired: option '" . &OPTION_RETENTION_ARCHIVE_TYPE .
             "=${strArchiveRetentionType}' but ";

        # If the archive retention is not explicitly set then determine what it should be set to so the user does not have to.
        if (!defined($iArchiveRetention))
        {
            # If retention-archive-type is default, then if retention-full is set, set the retention-archive to this value,
            # else ignore archiving
            if ($strArchiveRetentionType eq BACKUP_TYPE_FULL)
            {
                if (defined($iFullRetention))
                {
                    optionSet(OPTION_RETENTION_ARCHIVE, $iFullRetention);
                }
            }
            elsif ($strArchiveRetentionType eq BACKUP_TYPE_DIFF)
            {
                # if retention-diff is set then user must have set it
                if (defined($iDifferentialRetention))
                {
                    optionSet(OPTION_RETENTION_ARCHIVE, $iDifferentialRetention);
                }
                else
                {
                    &log(WARN,
                        $strMsgArchiveOff . "neither option '" . &OPTION_RETENTION_ARCHIVE .
                            "' nor option '" .  &OPTION_RETENTION_DIFF . "' is set");
                }
            }
            elsif ($strArchiveRetentionType eq BACKUP_TYPE_INCR)
            {
                &log(WARN, $strMsgArchiveOff . "option '" . &OPTION_RETENTION_ARCHIVE . "' is not set");
            }
        }
        else
        {
            # If retention-archive is set then check retention-archive-type and issue a warning if the corresponding setting is
            # UNDEF since UNDEF means backups will not be expired but they should be in the practice of setting this
            # value even though expiring the archive itself is OK and will be performed.
            if ($strArchiveRetentionType eq BACKUP_TYPE_DIFF && !defined($iDifferentialRetention))
            {
                &log(WARN,
                    "option '" . &OPTION_RETENTION_DIFF . "' is not set for '" . &OPTION_RETENTION_ARCHIVE_TYPE . "=" .
                        &BACKUP_TYPE_DIFF . "' \n" .
                        "HINT: to retain differential backups indefinitely (without warning), set option '" .
                        &OPTION_RETENTION_DIFF . "' to the maximum.");
            }
        }
    }

    return true;
}

push @EXPORT, qw(configLoad);

####################################################################################################################################
# optionValueGet
#
# Find the value of an option using both the regular and alt values.  Error if both are defined.
####################################################################################################################################
sub optionValueGet
{
    my $strOption = shift;
    my $hOption = shift;

    my $strValue = $$hOption{$strOption};

    # Some options have an alternate name so check for that as well
    if (defined($oOptionRule{$strOption}{&OPTION_RULE_ALT_NAME}))
    {
        my $strAltValue = $$hOption{$oOptionRule{$strOption}{&OPTION_RULE_ALT_NAME}};

        if (defined($strAltValue))
        {
            if (!defined($strValue))
            {
                $strValue = $strAltValue;
            }
            else
            {
                confess &log(
                    ERROR, "'${strOption}' and '" . $oOptionRule{$strOption}{&OPTION_RULE_ALT_NAME} .
                    ' cannot both be defined', ERROR_OPTION_INVALID_VALUE);
            }
        }
    }

    return $strValue;
}

####################################################################################################################################
# optionValidate
#
# Make sure the command-line options are valid based on the command.
####################################################################################################################################
sub optionValidate
{
    my $oOptionTest = shift;
    my $bHelp = shift;

    # Check that the command is present and valid
    $strCommand = $ARGV[0];

    if (!defined($strCommand))
    {
        confess &log(ERROR, "command must be specified", ERROR_COMMAND_REQUIRED);
    }

    if (!defined($oCommandHash{$strCommand}))
    {
        confess &log(ERROR, "invalid command ${strCommand}", ERROR_COMMAND_INVALID);
    }

    # Hash to store contents of the config file.  The file will be loaded once the config dependency is resolved unless all options
    # are set on the command line or --no-config is specified.
    my $oConfig;
    my $bConfigExists = true;

    # Keep track of unresolved dependencies
    my $bDependUnresolved = true;
    my %oOptionResolved;

    # Loop through all possible options
    while ($bDependUnresolved)
    {
        # Assume that all dependencies will be resolved in this loop
        $bDependUnresolved = false;

        foreach my $strOption (sort(keys(%oOptionRule)))
        {
            # Skip the option if it has been resolved in a prior loop
            if (defined($oOptionResolved{$strOption}))
            {
                next;
            }

            # The command rules must be explicitly set
            if (!defined($oOptionRule{$strOption}{&OPTION_RULE_COMMAND}))
            {
                confess &log(ASSERT, OPTION_RULE_COMMAND . " rules must be set for '${strOption}' option");
            }

            # Determine if an option is valid for a command
            if (!defined($oOptionRule{$strOption}{&OPTION_RULE_COMMAND}{$strCommand}))
            {
                $oOption{$strOption}{valid} = false;
                $oOptionResolved{$strOption} = true;
                next;
            }

            $oOption{$strOption}{valid} = true;

            # Store the option value
            my $strValue = optionValueGet($strOption, $oOptionTest);

            # Check to see if an option can be negated.  Make sure that it is not set and negated at the same time.
            my $bNegate = false;

            if (defined($oOptionRule{$strOption}{&OPTION_RULE_NEGATE}) && $oOptionRule{$strOption}{&OPTION_RULE_NEGATE})
            {
                $bNegate = defined($$oOptionTest{'no-' . $strOption});

                if ($bNegate && defined($strValue))
                {
                    confess &log(ERROR, "option '${strOption}' cannot be both set and negated", ERROR_OPTION_NEGATE);
                }

                if ($bNegate && $oOptionRule{$strOption}{&OPTION_RULE_TYPE} eq OPTION_TYPE_BOOLEAN)
                {
                    $strValue = false;
                }
            }

            # If the command has rules store them for later evaluation
            my $oCommandRule = optionCommandRule($strOption, $strCommand);

            # Check dependency for the command then for the option
            my $bDependResolved = true;
            my $oDepend = defined($oCommandRule) ? $$oCommandRule{&OPTION_RULE_DEPEND} :
                                                   $oOptionRule{$strOption}{&OPTION_RULE_DEPEND};
            my $strDependOption;
            my $strDependValue;
            my $strDependType;

            if (defined($oDepend))
            {
                # Check if the depend option has a value
                $strDependOption = $$oDepend{&OPTION_RULE_DEPEND_OPTION};
                $strDependValue = $oOption{$strDependOption}{value};

                # Make sure the depend option has been resolved, otherwise skip this option for now
                if (!defined($oOptionResolved{$strDependOption}))
                {
                    $bDependUnresolved = true;
                    next;
                }

                if (!defined($strDependValue))
                {
                    $bDependResolved = false;
                    $strDependType = 'source';
                }

                # If a depend value exists, make sure the option value matches
                if ($bDependResolved && defined($$oDepend{&OPTION_RULE_DEPEND_VALUE}) &&
                    $$oDepend{&OPTION_RULE_DEPEND_VALUE} ne $strDependValue)
                {
                    $bDependResolved = false;
                    $strDependType = 'value';
                }

                # If a depend list exists, make sure the value is in the list
                if ($bDependResolved && defined($$oDepend{&OPTION_RULE_DEPEND_LIST}) &&
                    !defined($$oDepend{&OPTION_RULE_DEPEND_LIST}{$strDependValue}))
                {
                    $bDependResolved = false;
                    $strDependType = 'list';
                }
            }

            # If the option value is undefined and not negated, see if it can be loaded from the config file
            if (!defined($strValue) && !$bNegate && $strOption ne OPTION_CONFIG &&
                $oOptionRule{$strOption}{&OPTION_RULE_SECTION} && $bDependResolved)
            {
                # If the config option has not been resolved yet then continue processing
                if (!defined($oOptionResolved{&OPTION_CONFIG}) || !defined($oOptionResolved{&OPTION_STANZA}))
                {
                    $bDependUnresolved = true;
                    next;
                }

                # If the config option is defined try to get the option from the config file
                if ($bConfigExists && defined($oOption{&OPTION_CONFIG}{value}))
                {
                    # Attempt to load the config file if it has not been loaded
                    if (!defined($oConfig))
                    {
                        my $strConfigFile = $oOption{&OPTION_CONFIG}{value};
                        $bConfigExists = -e $strConfigFile;

                        if ($bConfigExists)
                        {
                            if (!-f $strConfigFile)
                            {
                                confess &log(ERROR, "'${strConfigFile}' is not a file", ERROR_FILE_INVALID);
                            }

                            $oConfig = iniLoad($strConfigFile, undef, true);
                        }
                    }

                    # Get the section that the value should be in
                    my $strSection = $oOptionRule{$strOption}{&OPTION_RULE_SECTION};

                    # Always check for the option in the sanza section first
                    if (optionTest(OPTION_STANZA))
                    {
                        $strValue = optionValueGet($strOption, $$oConfig{optionGet(OPTION_STANZA)});
                    }

                    # Only continue searching when strSection != CONFIG_SECTION_STANZA.  Some options (e.g. db-path) can only be
                    # configured in the stanza section.
                    if (!defined($strValue) && $strSection ne CONFIG_SECTION_STANZA)
                    {
                        # Check command sections for a value.  This allows options (e.g. compress-level) to be set on a per-command
                        # basis.
                        if (defined($oOptionRule{$strOption}{&OPTION_RULE_COMMAND}{$strCommand}) &&
                            $oOptionRule{$strOption}{&OPTION_RULE_COMMAND}{$strCommand} != false)
                        {
                            # Check the stanza command section
                            if (optionTest(OPTION_STANZA))
                            {
                                $strValue = optionValueGet($strOption, $$oConfig{optionGet(OPTION_STANZA) . ":${strCommand}"});
                            }

                            # Check the global command section
                            if (!defined($strValue))
                            {
                                $strValue = optionValueGet($strOption, $$oConfig{&CONFIG_SECTION_GLOBAL . ":${strCommand}"});
                            }
                        }

                        # Finally check the global section
                        if (!defined($strValue))
                        {
                            $strValue = optionValueGet($strOption, $$oConfig{&CONFIG_SECTION_GLOBAL});
                        }
                    }

                    # Fix up data types
                    if (defined($strValue))
                    {
                        # The empty string is undefined
                        if ($strValue eq '')
                        {
                            $strValue = undef;
                        }
                        # Convert Y or N to boolean
                        elsif ($oOptionRule{$strOption}{&OPTION_RULE_TYPE} eq OPTION_TYPE_BOOLEAN)
                        {
                            if ($strValue eq 'y')
                            {
                                $strValue = true;
                            }
                            elsif ($strValue eq 'n')
                            {
                                $strValue = false;
                            }
                            else
                            {
                                confess &log(ERROR, "'${strValue}' is not valid for '${strOption}' option",
                                             ERROR_OPTION_INVALID_VALUE);
                            }
                        }
                        # Convert a list of key/value pairs to a hash
                        elsif ($oOptionRule{$strOption}{&OPTION_RULE_TYPE} eq OPTION_TYPE_HASH)
                        {
                            my @oValue = ();

                            # If there is only one key/value
                            if (ref(\$strValue) eq 'SCALAR')
                            {
                                push(@oValue, $strValue);
                            }
                            # Else if there is an array of values
                            else
                            {
                                @oValue = @{$strValue};
                            }

                            # Reset the value hash
                            $strValue = {};

                            # Iterate and parse each key/value pair
                            foreach my $strHash (@oValue)
                            {
                                my $iEqualIdx = index($strHash, '=');

                                if ($iEqualIdx < 1 || $iEqualIdx == length($strHash) - 1)
                                {
                                    confess &log(ERROR, "'${strHash}' is not valid for '${strOption}' option",
                                                 ERROR_OPTION_INVALID_VALUE);
                                }

                                my $strHashKey = substr($strHash, 0, $iEqualIdx);
                                my $strHashValue = substr($strHash, length($strHashKey) + 1);

                                $$strValue{$strHashKey} = $strHashValue;
                            }
                        }
                        # In all other cases the value should be scalar
                        elsif (ref(\$strValue) ne 'SCALAR')
                        {
                            confess &log(
                                ERROR, "option '${strOption}' cannot be specified multiple times", ERROR_OPTION_MULTIPLE_VALUE);
                        }

                        $oOption{$strOption}{source} = SOURCE_CONFIG;
                    }
                }
            }

            if (defined($oDepend) && !$bDependResolved && defined($strValue))
            {
                my $strError = "option '${strOption}' not valid without option ";

                if ($strDependType eq 'source')
                {
                    confess &log(ERROR, "${strError}'${strDependOption}'", ERROR_OPTION_INVALID);
                }

                # If a depend value exists, make sure the option value matches
                if ($strDependType eq 'value')
                {
                    if ($oOptionRule{$strDependOption}{&OPTION_RULE_TYPE} eq OPTION_TYPE_BOOLEAN)
                    {
                        $strError .= "'" . ($$oDepend{&OPTION_RULE_DEPEND_VALUE} ? '' : 'no-') . "${strDependOption}'";
                    }
                    else
                    {
                        $strError .= "'${strDependOption}' = '$$oDepend{&OPTION_RULE_DEPEND_VALUE}'";
                    }

                    confess &log(ERROR, $strError, ERROR_OPTION_INVALID);
                }

                $strError .= "'${strDependOption}'";

                # If a depend list exists, make sure the value is in the list
                if ($strDependType eq 'list')
                {
                    my @oyValue;

                    foreach my $strValue (sort(keys(%{$$oDepend{&OPTION_RULE_DEPEND_LIST}})))
                    {
                        push(@oyValue, "'${strValue}'");
                    }

                    $strError .= @oyValue == 1 ? " = $oyValue[0]" : " in (" . join(", ", @oyValue) . ")";
                    confess &log(ERROR, $strError, ERROR_OPTION_INVALID);
                }
            }

            # Is the option defined?
            if (defined($strValue))
            {
                # Check that floats and integers are valid
                if ($oOptionRule{$strOption}{&OPTION_RULE_TYPE} eq OPTION_TYPE_INTEGER ||
                    $oOptionRule{$strOption}{&OPTION_RULE_TYPE} eq OPTION_TYPE_FLOAT)
                {
                    # Test that the string is a valid float or integer  by adding 1 to it.  It's pretty hokey but it works and it
                    # beats requiring Scalar::Util::Numeric to do it properly.
                    my $bError = false;

                    eval
                    {
                        my $strTest = $strValue + 1;
                        return true;
                    }
                    or do
                    {
                        $bError = true;
                    };

                    # Check that integers are really integers
                    if (!$bError && $oOptionRule{$strOption}{&OPTION_RULE_TYPE} eq OPTION_TYPE_INTEGER &&
                        (int($strValue) . 'S') ne ($strValue . 'S'))
                    {
                        $bError = true;
                    }

                    # Error if the value did not pass tests
                    !$bError
                        or confess &log(ERROR, "'${strValue}' is not valid for '${strOption}' option", ERROR_OPTION_INVALID_VALUE);
                }

                # Process an allow list for the command then for the option
                my $oAllow = defined($oCommandRule) ? $$oCommandRule{&OPTION_RULE_ALLOW_LIST} :
                                                      $oOptionRule{$strOption}{&OPTION_RULE_ALLOW_LIST};

                if (defined($oAllow) && !defined($$oAllow{$strValue}))
                {
                    confess &log(ERROR, "'${strValue}' is not valid for '${strOption}' option", ERROR_OPTION_INVALID_VALUE);
                }

                # Process an allow range for the command then for the option
                $oAllow = defined($oCommandRule) ? $$oCommandRule{&OPTION_RULE_ALLOW_RANGE} :
                                                     $oOptionRule{$strOption}{&OPTION_RULE_ALLOW_RANGE};

                if (defined($oAllow) && ($strValue < $$oAllow[0] || $strValue > $$oAllow[1]))
                {
                    confess &log(ERROR, "'${strValue}' is not valid for '${strOption}' option", ERROR_OPTION_INVALID_RANGE);
                }

                # Set option value
                if ($oOptionRule{$strOption}{&OPTION_RULE_TYPE} eq OPTION_TYPE_HASH && ref($strValue) eq 'ARRAY')
                {
                    foreach my $strItem (@{$strValue})
                    {
                        my $strKey;
                        my $strValue;

                        # If the keys are expected to have values
                        if (!defined($oOptionRule{$strOption}{&OPTION_RULE_HASH_VALUE}) ||
                            $oOptionRule{$strOption}{&OPTION_RULE_HASH_VALUE})
                        {
                            # Check for = and make sure there is a least one character on each side
                            my $iEqualPos = index($strItem, '=');

                            if ($iEqualPos < 1 || length($strItem) <= $iEqualPos + 1)
                            {
                                confess &log(ERROR, "'${strItem}' not valid key/value for '${strOption}' option",
                                                    ERROR_OPTION_INVALID_PAIR);
                            }

                            $strKey = substr($strItem, 0, $iEqualPos);
                            $strValue = substr($strItem, $iEqualPos + 1);
                        }
                        # Else no values are expected so set value to true
                        else
                        {
                            $strKey = $strItem;
                            $strValue = true;
                        }

                        # Check that the key has not already been set
                        if (defined($oOption{$strOption}{$strKey}{value}))
                        {
                            confess &log(ERROR, "'${$strItem}' already defined for '${strOption}' option",
                                                ERROR_OPTION_DUPLICATE_KEY);
                        }

                        # Set key/value
                        $oOption{$strOption}{value}{$strKey} = $strValue;
                    }
                }
                else
                {
                    $oOption{$strOption}{value} = $strValue;
                }

                # If not config sourced then it must be a param
                if (!defined($oOption{$strOption}{source}))
                {
                    $oOption{$strOption}{source} = SOURCE_PARAM;
                }
            }
            # Else try to set a default
            elsif ($bDependResolved &&
                   (!defined($oOptionRule{$strOption}{&OPTION_RULE_COMMAND}) ||
                    defined($oOptionRule{$strOption}{&OPTION_RULE_COMMAND}{$strCommand})))
            {
                # Source is default for this option
                $oOption{$strOption}{source} = SOURCE_DEFAULT;

                # Check for default in command then option
                my $strDefault = optionDefault($strOption, $strCommand);

                # If default is defined
                if (defined($strDefault))
                {
                    # Only set default if dependency is resolved
                    $oOption{$strOption}{value} = $strDefault if !$bNegate;
                }
                # Else check required
                elsif (optionRequired($strOption, $strCommand) && !$bHelp)
                {
                    confess &log(ERROR, "${strCommand} command requires option: ${strOption}" .
                                        (defined($oOptionRule{$strOption}{&OPTION_RULE_HINT}) ?
                                         "\nHINT: " . $oOptionRule{$strOption}{&OPTION_RULE_HINT} : ''),
                                        ERROR_OPTION_REQUIRED);
                }
            }

            $oOptionResolved{$strOption} = true;
        }
    }
}

####################################################################################################################################
# optionCommandRule
#
# Returns the option rules based on the command.
####################################################################################################################################
sub optionCommandRule
{
    my $strOption = shift;
    my $strCommand = shift;

    if (defined($strCommand))
    {
        return defined($oOptionRule{$strOption}{&OPTION_RULE_COMMAND}) &&
               defined($oOptionRule{$strOption}{&OPTION_RULE_COMMAND}{$strCommand}) &&
               ref($oOptionRule{$strOption}{&OPTION_RULE_COMMAND}{$strCommand}) eq 'HASH' ?
               $oOptionRule{$strOption}{&OPTION_RULE_COMMAND}{$strCommand} : undef;
    }

    return;
}

####################################################################################################################################
# optionRequired
#
# Is the option required for this command?
####################################################################################################################################
sub optionRequired
{
    my $strOption = shift;
    my $strCommand = shift;

    # Get the command rule
    my $oCommandRule = optionCommandRule($strOption, $strCommand);

    # Check for required in command then option
    my $bRequired = defined($oCommandRule) ? $$oCommandRule{&OPTION_RULE_REQUIRED} :
                                             $oOptionRule{$strOption}{&OPTION_RULE_REQUIRED};

    # Return required
    return !defined($bRequired) || $bRequired;
}

push @EXPORT, qw(optionRequired);

####################################################################################################################################
# optionType
#
# Get the option type.
####################################################################################################################################
sub optionType
{
    my $strOption = shift;

    return $oOptionRule{$strOption}{&OPTION_RULE_TYPE};
}

push @EXPORT, qw(optionType);

####################################################################################################################################
# optionTypeTest
#
# Test the option type.
####################################################################################################################################
sub optionTypeTest
{
    my $strOption = shift;
    my $strType = shift;

    return optionType($strOption) eq $strType;
}

push @EXPORT, qw(optionTypeTest);

####################################################################################################################################
# optionIndex
#
# Return name for options that can be indexed (e.g. db1-host, db2-host).
####################################################################################################################################
sub optionIndex
{
    my $strOption = shift;
    my $iIndex = shift;
    my $bForce = shift;

    # If the option doesn't have a prefix it can't be indexed
    $iIndex = defined($iIndex) ? $iIndex : 1;
    my $strPrefix = $oOptionRule{$strOption}{&OPTION_RULE_PREFIX};

    if (!defined($strPrefix) && $iIndex > 1)
    {
        confess &log(ASSERT, "'${strOption}' option does not allow indexing");
    }

    # Index 1 is the same name as the option unless forced to include the index
    if ($iIndex == 1 && (!defined($bForce) || !$bForce))
    {
        return $strOption;
    }

    return "${strPrefix}${iIndex}" . substr($strOption, length($strPrefix));
}

push @EXPORT, qw(optionIndex);

####################################################################################################################################
# optionDefault
#
# Does the option have a default for this command?
####################################################################################################################################
sub optionDefault
{
    my $strOption = shift;
    my $strCommand = shift;

    # Get the command rule
    my $oCommandRule = optionCommandRule($strOption, $strCommand);

    # Check for default in command
    my $strDefault = defined($oCommandRule) ? $$oCommandRule{&OPTION_RULE_DEFAULT} : undef;

    # If defined return, else try to grab the global default
    return defined($strDefault) ? $strDefault : $oOptionRule{$strOption}{&OPTION_RULE_DEFAULT};
}

push @EXPORT, qw(optionDefault);

####################################################################################################################################
# optionRange
#
# Gets the allowed setting range for the option if it exists.
####################################################################################################################################
sub optionRange
{
    my $strOption = shift;
    my $strCommand = shift;

    # Get the command rule
    my $oCommandRule = optionCommandRule($strOption, $strCommand);

    # Check for default in command
    if (defined($oCommandRule) && defined($$oCommandRule{&OPTION_RULE_ALLOW_RANGE}))
    {
        return $$oCommandRule{&OPTION_RULE_ALLOW_RANGE}[0], $$oCommandRule{&OPTION_RULE_ALLOW_RANGE}[1];
    }

    # If defined return, else try to grab the global default
    return $oOptionRule{$strOption}{&OPTION_RULE_ALLOW_RANGE}[0], $oOptionRule{$strOption}{&OPTION_RULE_ALLOW_RANGE}[1];
}

push @EXPORT, qw(optionRange);

####################################################################################################################################
# optionSource
#
# How was the option set?
####################################################################################################################################
sub optionSource
{
    my $strOption = shift;

    optionValid($strOption, true);

    return $oOption{$strOption}{source};
}

push @EXPORT, qw(optionSource);

####################################################################################################################################
# optionValid
#
# Is the option valid for the current command?
####################################################################################################################################
sub optionValid
{
    my $strOption = shift;
    my $bError = shift;

    if (defined($oOption{$strOption}) && defined($oOption{$strOption}{valid}) && $oOption{$strOption}{valid})
    {
        return true;
    }

    if (defined($bError) && $bError)
    {
        if (!defined($oOption{$strOption}))
        {
            confess &log(ASSERT, "option '${strOption}' does not exist");
        }

        if (!defined($oOption{$strOption}{valid}))
        {
            confess &log(ASSERT, "option '${strOption}' does not have 'valid' flag set");
        }

        confess &log(ASSERT, "option ${strOption} is not valid for command '" . commandGet() . "'");
    }

    return false;
}

push @EXPORT, qw(optionValid);

####################################################################################################################################
# optionGet
#
# Get option value.
####################################################################################################################################
sub optionGet
{
    my $strOption = shift;
    my $bRequired = shift;

    optionValid($strOption, true);

    if (!defined($oOption{$strOption}{value}) && (!defined($bRequired) || $bRequired))
    {
        confess &log(ASSERT, "option ${strOption} is required");
    }

    return $oOption{$strOption}{value};
}

push @EXPORT, qw(optionGet);

####################################################################################################################################
# optionSet
#
# Set option value and source if the option is valid for the command.
####################################################################################################################################
sub optionSet
{
    my $strOption = shift;
    my $oValue = shift;

    optionValid($strOption, true);

    $oOption{$strOption}{source} = SOURCE_PARAM;

    $oOption{$strOption}{value} = $oValue;
}

push @EXPORT, qw(optionSet);

####################################################################################################################################
# optionTest
#
# Test a option value.
####################################################################################################################################
sub optionTest
{
    my $strOption = shift;
    my $strValue = shift;

    if (!optionValid($strOption))
    {
        return false;
    }

    if (defined($strValue))
    {
        return optionGet($strOption) eq $strValue ? true : false;
    }

    return defined($oOption{$strOption}{value}) ? true : false;
}

push @EXPORT, qw(optionTest);

####################################################################################################################################
# optionRuleGet
#
# Get the option rules.
####################################################################################################################################
sub optionRuleGet
{
    return dclone(\%oOptionRule);
}

push @EXPORT, qw(optionRuleGet);

####################################################################################################################################
# commandGet
#
# Get the current command.
####################################################################################################################################
sub commandGet
{
    return $strCommand;
}

push @EXPORT, qw(commandGet);

####################################################################################################################################
# commandTest
#
# Test the current command.
####################################################################################################################################
sub commandTest
{
    my $strCommandTest = shift;

    return $strCommandTest eq $strCommand;
}

push @EXPORT, qw(commandTest);

####################################################################################################################################
# commandStart
#
# Log information about the command that was just started.
####################################################################################################################################
sub commandStart
{
    &log($strCommand eq CMD_INFO ? DEBUG : INFO, "${strCommand} start:" . commandWrite($strCommand, true, '', false));
}

push @EXPORT, qw(commandStart);

####################################################################################################################################
# commandStop
#
# Log information about the command that was just stopped.
####################################################################################################################################
sub commandStop
{
    if (defined($strCommand))
    {
        &log($strCommand eq CMD_INFO ? DEBUG : INFO, "${strCommand} stop");
    }
}

push @EXPORT, qw(commandStop);

####################################################################################################################################
# commandSet
#
# Set current command (usually for triggering follow-on commands).
####################################################################################################################################
sub commandSet
{
    my $strValue = shift;

    commandStop();

    $strCommand = $strValue;

    commandStart();
}

push @EXPORT, qw(commandSet);

####################################################################################################################################
# commandWrite
#
# Using the options that were passed to the current command, write the command string for another command.  For example, this
# can be used to write the archive-get command for recovery.conf during a restore.
####################################################################################################################################
sub commandWrite
{
    my $strNewCommand = shift;
    my $bIncludeConfig = shift;
    my $strExeString = shift;
    my $bIncludeCommand = shift;
    my $oOptionOverride = shift;

    # Set defaults
    $strExeString = defined($strExeString) ? $strExeString : abs_path($0);
    $bIncludeConfig = defined($bIncludeConfig) ? $bIncludeConfig : false;
    $bIncludeCommand = defined($bIncludeCommand) ? $bIncludeCommand : true;

    # if ($bIncludeConfig && $strExeString ne '')
    # {
    #     $strExeString .= ' --no-config';
    # }

    # Iterate the options to figure out which ones are not default and need to be written out to the new command string
    foreach my $strOption (sort(keys(%oOptionRule)))
    {
        # Skip the config option if it's already included
        # next if ($bIncludeConfig && $strOption eq OPTION_CONFIG);

        # Process any option overrides first
        if (defined($$oOptionOverride{$strOption}))
        {
            if (defined($$oOptionOverride{$strOption}{value}))
            {
                $strExeString .= commandWriteOptionFormat($strOption, false, {value => $$oOptionOverride{$strOption}{value}});
            }
        }
        # else look for non-default options in the current configuration
        elsif ((!defined($oOptionRule{$strOption}{&OPTION_RULE_COMMAND}) ||
                defined($oOptionRule{$strOption}{&OPTION_RULE_COMMAND}{$strNewCommand})) &&
               defined($oOption{$strOption}{value}) &&
               ($bIncludeConfig ? $oOption{$strOption}{source} ne SOURCE_DEFAULT : $oOption{$strOption}{source} eq SOURCE_PARAM))
        {
            my $oValue;
            my $bMulti = false;

            # If this is a hash then it will break up into multple command-line options
            if (ref($oOption{$strOption}{value}) eq 'HASH')
            {
                $oValue = $oOption{$strOption}{value};
                $bMulti = true;
            }
            # Else a single value but store it in a hash anyway to make processing below simpler
            else
            {
                $oValue = {value => $oOption{$strOption}{value}};
            }

            $strExeString .= commandWriteOptionFormat($strOption, $bMulti, $oValue);
        }
    }

    if ($bIncludeCommand)
    {
        $strExeString .= " ${strNewCommand}";
    }

    return $strExeString;
}

push @EXPORT, qw(commandWrite);

# Helper function for commandWrite() to correctly format options for command-line usage
sub commandWriteOptionFormat
{
    my $strOption = shift;
    my $bMulti = shift;
    my $oValue = shift;

    # Loops though all keys in the hash
    my $strOptionFormat = '';
    my $strParam;

    foreach my $strKey (sort(keys(%$oValue)))
    {
        # Get the value - if the original value was a hash then the key must be prefixed
        my $strValue = ($bMulti ?  "${strKey}=" : '') . $$oValue{$strKey};

        # Handle the no- prefix for boolean values
        if ($oOptionRule{$strOption}{&OPTION_RULE_TYPE} eq OPTION_TYPE_BOOLEAN)
        {
            $strParam = '--' . ($strValue ? '' : 'no-') . $strOption;
        }
        else
        {
            $strParam = "--${strOption}=${strValue}";
        }

        # Add quotes if the value has spaces in it
        $strOptionFormat .= ' ' . (index($strValue, " ") != -1 ? "\"${strParam}\"" : $strParam);
    }

    return $strOptionFormat;
}

####################################################################################################################################
# commandHashGet
#
# Get the hash that contains all valid commands.
####################################################################################################################################
sub commandHashGet
{
    return dclone(\%oCommandHash);
}

push @EXPORT, qw(commandHashGet);

1;