I’ve learned about a “hidden feature” recently that enables some cool scenarios. Log Analytics or Azure Data Explorer aficionados will probably know all about functions already but for Application Insights this has not been documented yet and is not visible through the Azure portal.
List all functions
GET https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroup}/providers/Microsoft.Insights/components/{applicationName}/analyticsItems?api-version=2015-05-01&includeContent=true&scope=shared&type=function
Create or update function
PUT https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroup}/providers/Microsoft.Insights/components/{applicationName}/analyticsItems/item?api-version=2015-05-01
Request Body
| Name | Required | Type | Description |
|---|---|---|---|
| scope | true | string | |
| type | true | string | |
| name | true | string | Name of the function. Function name must begin with a letter and contain only letters, numbers and underscores. |
| content | true | string | Query that is executed when the function is calledpropertiestrueobjectFunction properties (e.g. alias) |
Sample
Request
PUT https://management.azure.com/subscriptions/my-subscription-id/resourceGroups/my-resource-group/providers/Microsoft.Insights/components/my-application/analyticsItems/item?api-version=2015-05-01
Request body
{
"scope": "shared",
"type": "function",
"name": "myfunction",
"content": "traces | count",
"properties": {
"functionAlias": "myfunction"
}
}
Delete function
DELETE https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroup}/providers/Microsoft.Insights/components/{applicationName}/analyticsItems/item?api-version=2015-05-01&includeContent=true&scope=shared&type=function&name={functionName}
Sample
Request
DELETE https://management.azure.com/subscriptions/my-subscription-id/resourceGroups/my-resource-group/providers/Microsoft.Insights/components/my-application/analyticsItems/item?api-version=2015-05-01&includeContent=true&scope=shared&type=function&name=myfunction