Variable substring transformation

Together with the mutual authentication behavior, this behavior affects how clients can authenticate themselves to edge servers and how groups within namespaces are authorized to access topics. It transforms a source string of the value extracted from the client certificate and stored as a variable, either client Id or Authorized Group(s). It lets you define a result substring from a source string.

How to

  1. In the Property Configuration Settings section, click Add Behavior.
  2. Search for and select the Variable Substring Transformation behavior.
  3. Click Insert Behavior.
  4. Find your newly added behavior in the Behaviors section.
  5. In Start, select the first character of your string. Use zero-based indexing.
    Note: To start extracting from the first character, you can leave this field empty.
  6. In End, select the last character of your string. Use zero-based indexing.
    Note: To stop extracting at the last character, you can leave this field empty.