Azure Function App - 
You can declare to scrape an Azure Function App via the FunctionApp resource
type.
The following fields need to be provided:
functionAppName- The name of the Azure Function AppslotName- The name of the deployment slot (optional)
All supported metrics are documented in the official Azure Monitor documentation.
The following scraper-specific metric label will be added:
slot_name- Name of the deployment slot. If none is specified,productionwill be used.
Example:
name: azure_function_requests
description: "Amount of requests for an Azure Function App"
resourceType: FunctionApp
azureMetricConfiguration:
  metricName: Requests
  aggregation:
    type: Total
resources:
- functionAppName: promitor-function-app