def get_schema():
    """Schema structure of this resource

    Some fields are defined  but this resource allows to store some other fields that may be some
    macros definition.

    Note that the `name` field is 1) not unique, 2) used as a reference for the Arbiter match.

    The configuration for an Alignak Arbiter named as 'arbiter-master' may be dispatched into
    several items in this collection with the same name field.

    :return: schema dictionary
    :rtype: dict
    """
    return {'allow_unknown': True, 'schema': {'schema_version': {'type':
        'integer', 'default': 1}, 'name': {'schema_version': 1, 'title':
        'Alignak name', 'comment':
        'Alignak instance name. This will be compared to the Alignak arbiter instance name to get the correct configuration.'
        , 'type': 'string', 'required': True, 'unique': False, 'empty': 
        False}, 'alias': {'schema_version': 1, 'title': 'Alias', 'comment':
        'Element friendly name used by the Web User Interface.', 'type':
        'string', 'default': ''}, 'notes': {'schema_version': 1, 'title':
        'Notes', 'comment':
        'Element notes. Free text to store element information.', 'type':
        'string', 'default': ''}, 'notes_url': {'schema_version': 1,
        'title': 'Notes URL', 'comment':
        'Element notes URL. Displayed in the Web UI as some URL to be navigatesd. Note that a very specific text format must be used for this field, see the Web UI documentation.'
        , 'type': 'string', 'default': ''}, 'instance_name': {
        'schema_version': 1, 'title': 'Instance name', 'comment':
        'Reporting daemon name', 'type': 'string'}, 'instance_id': {
        'schema_version': 1, 'title': 'Instance identifier', 'comment':
        'Reporting daemon identifier', 'type': 'string'}, 'pid': {
        'schema_version': 1, 'title': 'Instance PID', 'comment':
        'Reporting daemon PID', 'type': 'integer', 'default': 0},
        'program_start': {'schema_version': 1, 'title':
        'Program start time', 'comment':
        'Date/time the Alignak scheduler started/restarted', 'type':
        'integer', 'default': 0}, 'last_alive': {'schema_version': 1,
        'title': 'Last time alive', 'comment':
        'Date/time of this status report', 'type': 'integer', 'default': 0},
        'interval_length': {'schema_version': 1, 'title':
        'Application interval length', 'comment':
        'Default is 60 seconds for one minute', 'type': 'integer',
        'default': 60}, 'use_timezone': {'schema_version': 1, 'title':
        'Alignak time zone', 'comment': '', 'type': 'string', 'default': ''
        }, 'illegal_macro_output_chars': {'schema_version': 1, 'title':
        'Illegal macros output characters', 'comment': '', 'type': 'string',
        'default': ''}, 'illegal_object_name_chars': {'schema_version': 1,
        'title': 'Illegal objects name characters', 'comment': '', 'type':
        'string', 'default': "`~!$%^&*'|'<>?,()="},
        'cleaning_queues_interval': {'schema_version': 1, 'title':
        'Scheduler queues cleaning interval', 'comment':
        'Default is 15 minutes (900 seconds)', 'type': 'integer', 'default':
        900}, 'max_plugins_output_length': {'schema_version': 1, 'title':
        'Maximum check output length', 'comment': 'Default is 8192 bytes',
        'type': 'integer', 'default': 8192}, 'enable_environment_macros': {
        'schema_version': 1, 'title': 'Enable environment macros',
        'comment':
        'Enable to provide environment variables as macros to the launched commands. Default is disabled.'
        , 'type': 'boolean', 'default': False}, 'log_initial_states': {
        'schema_version': 1, 'title': 'Log objects initial states',
        'comment': 'Create a monitoring log event for this event', 'type':
        'boolean', 'default': True}, 'log_active_checks': {'schema_version':
        1, 'title': 'Log objects active checks', 'comment':
        'Create a monitoring log event for this event', 'type': 'boolean',
        'default': True}, 'log_host_retries': {'schema_version': 1, 'title':
        'Log hosts checks retries', 'comment':
        'Create a monitoring log event for this event', 'type': 'boolean',
        'default': True}, 'log_service_retries': {'schema_version': 1,
        'title': 'Log services checks retries', 'comment':
        'Create a monitoring log event for this event', 'type': 'boolean',
        'default': True}, 'log_passive_checks': {'schema_version': 1,
        'title': 'Log objects passive checks', 'comment':
        'Create a monitoring log event for this event', 'type': 'boolean',
        'default': True}, 'log_notifications': {'schema_version': 1,
        'title': 'Log notifications', 'comment':
        'Create a monitoring log event for this event', 'type': 'boolean',
        'default': True}, 'log_event_handlers': {'schema_version': 1,
        'title': 'Log objects event handlers', 'comment':
        'Create a monitoring log event for this event', 'type': 'boolean',
        'default': True}, 'log_external_commands': {'schema_version': 1,
        'title': 'Log external commands', 'comment':
        'Create a monitoring log event for this event', 'type': 'boolean',
        'default': True}, 'log_flappings': {'schema_version': 1, 'title':
        'Log objects states flapping', 'comment':
        'Create a monitoring log event for this event', 'type': 'boolean',
        'default': True}, 'log_snapshots': {'schema_version': 1, 'title':
        'Log objects snapshots', 'comment':
        'Create a monitoring log event for this event', 'type': 'boolean',
        'default': True}, 'enable_notifications': {'schema_version': 1,
        'title': 'Notifications enabled', 'comment':
        'Raising notifications is enabled. Default is True', 'type':
        'boolean', 'default': True}, 'notification_timeout': {
        'schema_version': 1, 'title': 'Notification commands timeout',
        'comment': 'Default is 30 seconds', 'type': 'integer', 'default': 
        30}, 'timeout_exit_status': {'schema_version': 1, 'title':
        'Command timeout exit status', 'comment': 'Default is 2 (CRITICAL)',
        'type': 'integer', 'default': 2}, 'execute_host_checks': {
        'schema_version': 1, 'title': 'Active host checks enabled',
        'comment': '', 'type': 'boolean', 'default': True},
        'max_host_check_spread': {'schema_version': 1, 'title':
        'Maximum hosts checks spread', 'comment': 'Default is 30 seconds',
        'type': 'integer', 'default': 30}, 'host_check_timeout': {
        'schema_version': 1, 'title': 'Hosts checks commands timeout',
        'comment': 'Default is 30 seconds', 'type': 'integer', 'default': 
        30}, 'check_for_orphaned_hosts': {'schema_version': 1, 'title':
        'Check for orphaned hosts', 'comment': '', 'type': 'boolean',
        'default': True}, 'execute_service_checks': {'schema_version': 1,
        'title': 'Active service checks enabled', 'comment': '', 'type':
        'boolean', 'default': True}, 'max_service_check_spread': {
        'schema_version': 1, 'title': 'Maximum services checks spread',
        'comment': 'Default is 30 seconds', 'type': 'integer', 'default': 
        30}, 'service_check_timeout': {'schema_version': 1, 'title':
        'Services checks commands timeout', 'comment':
        'Default is 60 seconds', 'type': 'integer', 'default': 60},
        'check_for_orphaned_services': {'schema_version': 1, 'title':
        'Check for orphaned services', 'comment': '', 'type': 'boolean',
        'default': True}, 'flap_detection_enabled': {'schema_version': 1,
        'title': 'Flapping detection enabled', 'comment': '', 'type':
        'boolean', 'default': True}, 'flap_history': {'schema_version': 1,
        'title': 'Flapping history', 'comment':
        'Number of states for flapping computing', 'type': 'integer',
        'default': 20}, 'low_host_flap_threshold': {'schema_version': 1,
        'title': 'Host low flapping threshold', 'comment': '', 'type':
        'integer', 'default': 20}, 'high_host_flap_threshold': {
        'schema_version': 1, 'title': 'Host high flapping threshold',
        'comment': '', 'type': 'integer', 'default': 30},
        'low_service_flap_threshold': {'schema_version': 1, 'title':
        'Service low flapping threshold', 'comment': '', 'type': 'integer',
        'default': 20}, 'high_service_flap_threshold': {'schema_version': 1,
        'title': 'Service high flapping threshold', 'comment': '', 'type':
        'integer', 'default': 30}, 'event_handlers_enabled': {
        'schema_version': 1, 'title': 'Event handlers enabled', 'comment':
        '', 'type': 'boolean', 'default': True}, 'event_handler_timeout': {
        'schema_version': 1, 'title': 'Event handlers commands timeout',
        'comment': 'Default is 30 seconds', 'type': 'integer', 'default': 
        30}, 'no_event_handlers_during_downtimes': {'schema_version': 1,
        'title':
        'Event handlers launched when object is in a downtime period',
        'comment': '', 'type': 'boolean', 'default': False},
        'global_host_event_handler': {'schema_version': 1, 'title':
        'Global host event handler', 'comment':
        'Command that will be used as an event handler if none is specified for a specific host/service.'
        , 'type': 'string', 'default': 'None'},
        'global_service_event_handler': {'schema_version': 1, 'title':
        'Global service event handler', 'comment':
        'Command that will be used as an event handler if none is specified for a specific host/service.'
        , 'type': 'string', 'default': 'None'}, 'process_performance_data':
        {'schema_version': 1, 'title': 'Process performance data',
        'comment': 'Enable / disable the performance data extra management',
        'type': 'boolean', 'default': True}, 'host_perfdata_command': {
        'schema_version': 1, 'title': 'Host performance data command',
        'comment':
        'Command that will be run for the performance data of an host.',
        'type': 'string', 'default': 'None'}, 'service_perfdata_command': {
        'schema_version': 1, 'title': 'Service performance data command',
        'comment':
        'Command that will be run for the performance data of a service.',
        'type': 'string', 'default': 'None'}, 'accept_passive_host_checks':
        {'schema_version': 1, 'title': 'Passive host checks enabled',
        'comment': 'Accept passive hosts checks. Default is True', 'type':
        'boolean', 'default': True}, 'check_host_freshness': {
        'schema_version': 1, 'title': 'Host checks freshness check',
        'comment':
        'Host checks freshness is enabled/disabled. Default is True',
        'type': 'boolean', 'default': True},
        'host_freshness_check_interval': {'schema_version': 1, 'title':
        'Host freshness check interval', 'comment':
        'Default is one hour (3600 seconds)', 'type': 'integer', 'default':
        3600}, 'accept_passive_service_checks': {'schema_version': 1,
        'title': 'Passive service checks enabled', 'comment':
        'Accept passive services checks', 'type': 'boolean', 'default': 
        True}, 'check_service_freshness': {'schema_version': 1, 'title':
        'Passive service checks enabled', 'comment':
        'Accept passive services checks', 'type': 'boolean', 'default': 
        True}, 'service_freshness_check_interval': {'schema_version': 1,
        'title': 'Service freshness check interval', 'comment':
        'Default is one hour (3600 seconds)', 'type': 'integer', 'default':
        30}, 'additional_freshness_latency': {'schema_version': 1, 'title':
        'Additional freshness latency', 'comment':
        'Extra time for the freshness check - default is 15 seconds',
        'type': 'integer', 'default': 15}, 'check_external_commands': {
        'schema_version': 1, 'title': 'Check external commands', 'comment':
        'Enable / disable the external commands management', 'type':
        'boolean', 'default': True}, '_realm': {'schema_version': 1, 'type':
        'objectid', 'data_relation': {'resource': 'realm', 'embeddable': 
        True}, 'required': True}, '_sub_realm': {'schema_version': 1,
        'type': 'boolean', 'default': True}, '_users_read': {
        'schema_version': 1, 'type': 'list', 'schema': {'type': 'objectid',
        'data_relation': {'resource': 'user', 'embeddable': True}}},
        '_users_update': {'schema_version': 1, 'type': 'list', 'schema': {
        'type': 'objectid', 'data_relation': {'resource': 'user',
        'embeddable': True}}}, '_users_delete': {'schema_version': 1,
        'type': 'list', 'schema': {'type': 'objectid', 'data_relation': {
        'resource': 'user', 'embeddable': True}}}}, 'schema_deleted': {}}
