README.md

topic	languages	products	name	description	azureDeploy
sample	csharp	azure-cognitive-search azure-functions	Get File Extension sample skill for AI search	This custom skill returns the document's extension and file name without extension.	https://raw.githubusercontent.com/Azure-Samples/azure-search-power-skills/main/Utils/GetFileExtension/azuredeploy.json

GetFileExtension

This custom skill returns the document's file extension and the file name without extension to be indexed accordingly.

Requirements

These skills have no additional requirements than the ones described in the root README.md file.

Sample Input:

{
    "values": [
        {
            "recordId": "1",
            "data":
            {
                "documentName":  "2020_quarterly_earnings.docx",
            }
        },
        {
            "recordId": "foo1",
            "data":
            {
                "documentName":  "IMPORTANT_COMPANY_ANNOUNCEMENT.eml",
            }
        }
    ]
}

Sample Output:

{
    "values": [
        {
            "recordId": "1",
            "data": {
                "extensions" : ".docx",
                "fileName" : "2020_quarterly_earnings"
            },
            "errors": [],
            "warnings": []
        },
        {
            "recordId": "foo1",
            "data": {
                "extensions" : ".eml",
                "fileName" : "IMPORTANT_COMPANY_ANNOUNCEMENT"
            },
            "errors": [],
            "warnings": []
        }
    ]
}

Sample Skillset Integration

In order to use this skill in a AI search pipeline, you'll need to add a skill definition to your skillset. Here's a sample skill definition for this example (inputs and outputs should be updated to reflect your particular scenario and skillset environment):

{
    "@odata.type": "#Microsoft.Skills.Custom.WebApiSkill",
    "description": "Our Custom Get File Extension custom skill",
    "context": "/document",
    "uri": "[AzureFunctionEndpointUrl]/api/get-file-extension?code=[AzureFunctionDefaultHostKey]",
    "batchSize": 1,
    "inputs": [
        {
            "name": "documentName",
            "source": "/document/metadata_storage_name/"
        }
    ],
    "outputs": [
        {
            "name": "extension",
            "targetName": "extension"
        },
        {
            "name": "fileName",
            "targetName": "fileName"
        }
    ]
}