Parameterize Azure Blob Storage Linked Service in ADF

Question

I would like to create an Azure Data Factory pipeline that copies a file to multiple storage accounts. My plan was to define the storage account connection info in a pipeline parameter as an array and use the ForEach activity to loop over each of the objects in the array passing the connection info to another pipeline.

    [
  {
    "destinationBlob": {
      "connectionString": "Conn1"
    }
  },
  {
    "destinationBlob": {
      "connectionString": "Conn2"
    }
  },
  {
    "destinationBlob": {
      "connectionString": "Conn3"
    }
  }
]

My question is, is it possible to parameterize the connection to an Azure Blob Storage Linked Service?

Answer 1

This can actually be done. Sample JSON:

{
    "name": "DataLakeBlob",
    "type": "Microsoft.DataFactory/factories/linkedservices",
    "properties": {
        "parameters": {
            "StorageAccountEndpoint": {
                "type": "String",
                "defaultValue": "https://testblobstorage.blob.core.windows.net"
            }
        },
        "type": "AzureBlobStorage",
        "typeProperties": {
            "serviceEndpoint": "@{linkedService().StorageAccountEndpoint}"
        },
        "description": "Test Description"
    }
}

Answer 2

Based on the document , ADF parameterization of Linked Service does not support azure blob storage.

So,you could copy the specific file into destinations apart only so far.

Answer 3

Edit: This was acknowledged by Microsoft. https://docs.microsoft.com/en-us/azure/data-factory/parameterize-linked-services#

For those looking for SAS token parameterization, you could use following JSON. Be sure to check the checkbox like in screenshot for the JSON to apply.

{
  "type":"Microsoft.DataFactory/factories/linkedservices",
  "properties":{
  "parameters": {
        "StorageAccountEndpoint": {
            "type": "String",
            "defaultValue": "https://<<yourstorageaccountname>>.blob.core.windows.net/?sv=2018-03-28&ss=b&srt=sco&sp=rwdlac&se=2019-10-20T16:33:57Z&st=2019-09-20T08:33:57Z&spr=https&sig=lDrBjD%2BjM2T1XjRW997VPMqDp99ZxVoReyRK0VEX7zQ%3D"
        }
    },
    "type": "AzureBlobStorage",
    "typeProperties": {
        "sasUri": "@{linkedService().StorageAccountEndpoint}"
    }

}}