## <a id="schemas"></a> Schemas

### <a id="schema-db-ido"></a> DB IDO

There is a detailed documentation for the Icinga IDOUtils 1.x
database schema available on [http://docs.icinga.org/latest/en/db_model.html]

#### <a id="schema-db-ido-extensions"></a> DB IDO Schema Extensions

Icinga 2 specific extensions are shown below:

New tables: `endpoints`, `endpointstatus`

  Table               | Column             | Type     | Default | Description
  --------------------|--------------------|----------|---------|-------------
  endpoints           | endpoint_object_id | bigint   | NULL    | FK: objects table
  endpoints           | identity           | TEXT     | NULL    | endpoint name
  endpoints           | node               | TEXT     | NULL    | local node name

  Table               | Column             | Type     | Default | Description
  --------------------|--------------------|----------|---------|-------------
  endpointstatus      | endpoint_object_id | bigint   | NULL    | FK: objects table
  endpointstatus      | identity           | TEXT     | NULL    | endpoint name
  endpointstatus      | node               | TEXT     | NULL    | local node name
  endpointstatus      | is_connected       | smallint | 0       | update on endpoint connect/disconnect

New columns:

  Table               | Column                  | Type     | Default | Description
  --------------------|-------------------------|----------|---------|-------------
  all status/history  | endpoint_object_id      | bigint   | NULL    | FK: objects table
  servicestatus       | check_source            | TEXT     | NULL    | node name where check was executed
  hoststatus          | check_source            | TEXT     | NULL    | node name where check was executed
  statehistory        | check_source            | TEXT     | NULL    | node name where check was executed
  logentries          | object_id               | bigint   | NULL    | FK: objects table (service associated with column)
  hosts               | check_service_object_id | bigint   | NULL    | FK: objects table (service associated with column)

Additional command custom variables populated from 'vars' dictionary.
Additional global custom variables populated from 'Vars' constant (object_id is NULL).


### <a id="schema-livestatus"></a> Livestatus


#### <a id="schema-livestatus-tables"></a> Livestatus Tables

  Table         | Join      |Description
  --------------|-----------|----------------------------
  hosts         | &nbsp;    | host config and status attributes, services counter
  hostgroups    | &nbsp;    | hostgroup config, status attributes and host/service counters
  services      | hosts     | service config and status attributes
  servicegroups | &nbsp;    | servicegroup config, status attributes and service counters
  contacts      | &nbsp;    | contact config and status attributes
  contactgroups | &nbsp;    | contact config, members
  commands      | &nbsp;    | command name and line
  status        | &nbsp;    | programstatus, config and stats
  comments      | services  | status attributes
  downtimes     | services  | status attributes
  timeperiods   | &nbsp;    | name and is inside flag
  endpoints     | &nbsp;    | config and status attributes
  log           | services, hosts, contacts, commands | parses [compatlog](#objecttype-compatlogger) and shows log attributes
  statehist     | hosts, services | parses [compatlog](#objecttype-compatlogger) and aggregates state change attributes

The `commands` table is populated with `CheckCommand`, `EventCommand` and `NotificationCommand` objects.


#### <a id="schema-livestatus-table-attributes"></a> Livestatus Table Attributes

A detailed list which table attributes are supported can be found here: [https://wiki.icinga.org/display/icinga2/Livestatus#Livestatus-Attributes]


#### <a id="schema-livestatus-get-queries"></a> Livestatus GET Queries

    $ echo -e 'GET services' | netcat 127.0.0.1 6558

    $ cat servicegroups <<EOF
    GET servicegroups

    EOF

    (cat servicegroups; sleep 1) | netcat 127.0.0.1 6558

#### <a id="schema-livestatus-command-queries"></a> Livestatus COMMAND Queries

    $ echo -e 'COMMAND <externalcommandstring>' | netcat 127.0.0.1 6558


#### <a id="schema-livestatus-filters"></a> Livestatus Filters

and, or, negate

  Operator  | Negate   | Description
  ----------|------------------------
   =        | !=       | Euqality
   ~        | !~       | Regex match
   =~       | !=~      | Euqality ignoring case
   ~~       | !~~      | Regex ignoring case
   >        |          | Less than
   <        |          | Greater than
   >=       |          | Less than or equal
   <=       |          | Greater than or equal


#### <a id="schema-livestatus-stats"></a> Livestatus Stats

Schema: "Stats: aggregatefunction aggregateattribute"

  Aggregate Function | Description
  -------------------|--------------
  sum                | &nbsp;
  min                | &nbsp;
  max                | &nbsp;
  avg                | sum / count
  std                | standard deviation
  suminv             | sum (1 / value)
  avginv             | suminv / count
  count              | ordinary default for any stats query if not aggregate function defined

Example:

    GET hosts
    Filter: has_been_checked = 1
    Filter: check_type = 0
    Stats: sum execution_time
    Stats: sum latency
    Stats: sum percent_state_change
    Stats: min execution_time
    Stats: min latency
    Stats: min percent_state_change
    Stats: max execution_time
    Stats: max latency
    Stats: max percent_state_change
    OutputFormat: json
    ResponseHeader: fixed16

#### <a id="schema-livestatus-output"></a> Livestatus Output

* CSV

CSV Output uses two levels of array seperators: The members array separator
is a comma (1st level) while extra info and host|service relation separator
is a pipe (2nd level).

Seperators can be set using ASCII codes like:

    Separators: 10 59 44 124

* JSON

Default separators.

#### <a id="schema-livestatus-error-codes"></a> Livestatus Error Codes

  Code      | Description
  ----------|--------------
  200       | OK
  404       | Table does not exist
  452       | Exception on query

#### <a id="schema-livestatus-extensions"></a> Livestatus Schema Extensions

Icinga 2 specific extensions are shown below:

New table: `endpoints`

  Table     | Column
  ----------|--------------
  endpoints | name
  endpoints | identity
  endpoints | node
  endpoints | is_connected

New columns:

  Table     | Column
  ----------|--------------
  services  | check_source
  hosts     | check_service
  downtimes | triggers
  downtimes | trigger_time
  commands  | custom_variable_names
  commands  | custom_variable_values
  commands  | custom_variables
  status    | custom_variable_names
  status    | custom_variable_values
  status    | custom_variables

Command custom variables reflect the local 'vars' dictionary.
Status custom variables reflect the global 'Vars' constant.