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    Resource Orchestration Service:Fn::Split

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    Resource Orchestration Service:Fn::Split

    Last Updated:Mar 15, 2024

    The built-in function Fn::Split splits a string into multiple values by using a delimiter.

    Declaration

    • JSON

      {
  "Fn::Split": [
    "delimiter",
    "original_string"
  ]
}

    • YAML

      • Syntax for the full function name: 

        Fn::Split:
  - delimiter
  - original_string

      • Syntax for the short form: 

        !Split [delimiter, original_string]

    Parameters

    • delimiter: the delimiter, such as a comma (,), a semicolon (;), a line feed (\n), or an indent (\t).

    • original_string: the string that you want to split into multiple values.

    Return value

    The split string values.

    Examples

    • In the following example, the Fn::Split function is used to split a string into an array of data elements: 

      !Split
  - ;
  - foo; bar; achoo
      {
  "Fn::Split": [
    ";",
    "foo; bar; achoo"
  ]
}

      In this example, ["foo","bar","achoo"] is returned.

    • In the following example, the Fn::Split function is used to split the value of InstanceIds: 

      Parameters:
  InstanceIds:
    Type: String
    Default: instane1_id,instance2_id,instance2_id
Resources:
  a:
    Type: ALIYUN::SLB::BackendServerAttachment
    Properties:
      BackendServerList:
        !Split
          - ','
          - !Ref InstanceIds
      {
  "Parameters": {
    "InstanceIds": {
      "Type": "String",
      "Default": "instane1_id,instance2_id,instance2_id"
    }
  },
  "Resources": {
    "a": {
      "Type": "ALIYUN::SLB::BackendServerAttachment",
      "Properties": {
        "BackendServerList": {
          "Fn::Split": [
            ",",
            {"Ref": "InstanceIds"}
          ]
        }
      }
    }
  }
}

    Supported functions