history.get

Description

integer/array history.get(object parameters)

The method allows to retrieve history data according to the given parameters.

This method may return historical data of a deleted entity if this data has not been removed by the housekeeper yet.

Parameters

(object) Parameters defining the desired output.

The method supports the following parameters.

Parameter	Type	Description
history	integer	History object types to return. Possible values: 0 - numeric float; 1 - character; 2 - log; 3 - numeric unsigned; 4 - text. Default: 3.
hostids	string/array	Return only history from the given hosts.
itemids	string/array	Return only history from the given items.
time_from	timestamp	Return only values that have been received after or at the given time.
time_till	timestamp	Return only values that have been received before or at the given time.
sortfield	string/array	Sort the result by the given properties. Possible values are: `itemid` and `clock`.
countOutput	boolean	These parameters being common for all `get` methods are described in detail in the reference commentary page.
editable	boolean
excludeSearch	boolean
filter	object
limit	integer
output	query
search	object
searchByAny	boolean
searchWildcardsEnabled	boolean
sortorder	string/array
startSearch	boolean

Return values

(integer/array) Returns either:

an array of objects;
the count of retrieved objects, if the countOutput parameter has been used.

Examples

Retrieving item history data

Return 10 latest values received from a numeric(float) item.

Request:

{
           "jsonrpc": "2.0",
           "method": "history.get",
           "params": {
               "output": "extend",
               "history": 0,
               "itemids": "23296",
               "sortfield": "clock",
               "sortorder": "DESC",
               "limit": 10
           },
           "auth": "038e1d7b1735c6a5436ee9eae095879e",
           "id": 1
       }

Response:

{
           "jsonrpc": "2.0",
           "result": [
               {
                   "itemid": "23296",
                   "clock": "1351090996",
                   "value": "0.085",
                   "ns": "563157632"
               },
               {
                   "itemid": "23296",
                   "clock": "1351090936",
                   "value": "0.16",
                   "ns": "549216402"
               },
               {
                   "itemid": "23296",
                   "clock": "1351090876",
                   "value": "0.18",
                   "ns": "537418114"
               },
               {
                   "itemid": "23296",
                   "clock": "1351090816",
                   "value": "0.21",
                   "ns": "522659528"
               },
               {
                   "itemid": "23296",
                   "clock": "1351090756",
                   "value": "0.215",
                   "ns": "507809457"
               },
               {
                   "itemid": "23296",
                   "clock": "1351090696",
                   "value": "0.255",
                   "ns": "495509699"
               },
               {
                   "itemid": "23296",
                   "clock": "1351090636",
                   "value": "0.36",
                   "ns": "477708209"
               },
               {
                   "itemid": "23296",
                   "clock": "1351090576",
                   "value": "0.375",
                   "ns": "463251343"
               },
               {
                   "itemid": "23296",
                   "clock": "1351090516",
                   "value": "0.315",
                   "ns": "447947017"
               },
               {
                   "itemid": "23296",
                   "clock": "1351090456",
                   "value": "0.275",
                   "ns": "435307141"
               }
           ],
           "id": 1
       }

Source

CHistory::get() in ui/include/classes/api/services/CHistory.php.

Documentation