Table of Contents
sla.getsli
Description
object sla.getsli(object parameters)
This method allows to calculate the Service Level Indicator (SLI) data for a Service Level Agreement (SLA).
This method is available to users of any type. Permissions to call the method can be revoked in user role settings. See User roles for more information.
Parameters
(object) Parameters containing the SLA ID, reporting periods and, optionally, the IDs of the services - to calculate the SLI for.
| Parameter | Type | Description |
|---|---|---|
| slaid (required) |
string | ID of the SLA to return availability information for. |
| period_from | integer | Starting date (inclusive) to report the SLI for. Possible values: timestamp. |
| period_to | integer | Ending date (exclusive) to report the SLI for. Possible values: timestamp. |
| periods | array | Preferred number of periods to report. Possible values: 1-100 |
| serviceids | string/array | IDs of services to return the SLI for. |
Partitioning of periods
The following table demonstrates the arrangement of returned period slices based on combinations of parameters.
The returned periods will not precede the first available period based on the effective date of the SLA and will not exceed the current period.
| Parameters | Description | ||
|---|---|---|---|
| period_from | period_to | periods | |
| - | - | - | Return the last 20 periods. |
| - | - | specified | Return the last periods specified by the periods parameter. |
| - | specified | - | Return the last 20 periods before the specified period_to date. |
| - | specified | specified | Return the last periods specified by the periods parameter before the specified period_to date. |
| specified | - | - | Return the first 20 periods starting with the specified period_from date. |
| specified | - | specified | Return the first periods specified by the periods parameter starting with the specified period_from date. |
| specified | specified | - | Return up to 100 periods within the specified date range. |
| specified | specified | specified | Return periods specified by the periods parameter within the specified date range. |
Return values
(object) Returns the results of the calculation.
| Property | Type | Description |
|---|---|---|
| periods | array | List of the reported periods. Each reported period is represented as an object consisting of: - period_from - Starting date of the reported period (timestamp). - period_to - Ending date of the reported period (timestamp). Periods are sorted by period_from field ascending. |
| serviceids | array | List of service IDs in the reported periods. The sorting order of the list is not defined. Even if serviceids parameter was passed to the sla.getsli method. |
| sli | array | SLI data (as a two-dimensional array) for each reported period and service. The index of the periods property is used as the first dimension of the sli property.The index of the serviceids property is used as the second dimension of the sli property. |
SLI data
The SLI data returned for each reported period and service consists of:
| Property | Type | Description |
|---|---|---|
| uptime | integer | Amount of time service spent in an OK state during scheduled uptime, less the excluded downtimes. |
| downtime | integer | Amount of time service spent in a not OK state during scheduled uptime, less the excluded downtimes. |
| sli | float | SLI (per cent of total uptime), based on uptime and downtime. |
| error_budget | integer | Error budget (in seconds), based on the SLI and the SLO. |
| excluded_downtimes | array | Array of excluded downtimes in this reporting period. Each object will contain the following parameters: - name - Name of the excluded downtime. - period_from - Starting date and time (inclusive) of the excluded downtime. - period_to - Ending date and time (exclusive) of the excluded downtime. Excluded downtimes are sorted by period_from field ascending. |
Examples
Calculating SLI
Retrieve SLI data on services with IDs "50", "60" and "70" that are linked to the SLA with ID "5". Retrieve data for 3 periods starting from Nov 01, 2021.
Request:
{
"jsonrpc": "2.0",
"method": "sla.getsli",
"params": {
"slaid": "5",
"serviceids": [
50,
60,
70
],
"periods": 3,
"period_from": "1635724800"
},
"auth": "038e1d7b1735c6a5436ee9eae095879e",
"id": 1
}Response:
{
"jsonrpc": "2.0",
"result": {
"periods": [
{
"period_from": 1635724800,
"period_to": 1638316800
},
{
"period_from": 1638316800,
"period_to": 1640995200
},
{
"period_from": 1640995200,
"period_to": 1643673600
}
],
"serviceids": [
50,
60,
70
],
"sli": [
[
{
"uptime": 1186212,
"downtime": 0,
"sli": 100,
"error_budget": 0,
"excluded_downtimes": [
{
"name": "Excluded Downtime - 1",
"period_from": 1637836212,
"period_to": 1638316800
}
]
},
{
"uptime": 1186212,
"downtime": 0,
"sli": 100,
"error_budget": 0,
"excluded_downtimes": [
{
"name": "Excluded Downtime - 1",
"period_from": 1637836212,
"period_to": 1638316800
}
]
},
{
"uptime": 1186212,
"downtime": 0,
"sli": 100,
"error_budget": 0,
"excluded_downtimes": [
{
"name": "Excluded Downtime - 1",
"period_from": 1637836212,
"period_to": 1638316800
}
]
}
],
[
{
"uptime": 1147548,
"downtime": 0,
"sli": 100,
"error_budget": 0,
"excluded_downtimes": [
{
"name": "Excluded Downtime - 1",
"period_from": 1638439200,
"period_to": 1639109652
}
]
},
{
"uptime": 1147548,
"downtime": 0,
"sli": 100,
"error_budget": 0,
"excluded_downtimes": [
{
"name": "Excluded Downtime - 1",
"period_from": 1638439200,
"period_to": 1639109652
}
]
},
{
"uptime": 1147548,
"downtime": 0,
"sli": 100,
"error_budget": 0,
"excluded_downtimes": [
{
"name": "Excluded Downtime - 1",
"period_from": 1638439200,
"period_to": 1639109652
}
]
}
],
[
{
"uptime": 1674000,
"downtime": 0,
"sli": 100,
"error_budget": 0,
"excluded_downtimes": []
},
{
"uptime": 1674000,
"downtime": 0,
"sli": 100,
"error_budget": 0,
"excluded_downtimes": []
},
{
"uptime": 1674000,
"downtime": 0,
"sli": 100,
"error_budget": 0,
"excluded_downtimes": []
}
]
]
},
"id": 1
}Source
CSla::getSli() in ui/include/classes/api/services/CSla.php