Body dispatcher - Regex is not working with complex payloads

I was trying to create a mock with different responses depending on the body, I tried to use body dispatcher with regexp operator but the problem is when I try to evaluate a regex pattern with a payload that has objects inside objects, I always receive the default response, I reviewed the code and I found in the class “JsonExpressionEvaluator.java” line 70:

String caseKey = evaluatedNode.asText();

This “asText()” is returning a void string for payloads as:

private static final String RECURSIVE_OBJECTS = "{\"cars\":{\"Peugeot\":[ " + "{\"name\": \"307\", \"model\": \"Peugeot 307\", \"year\": 2003}, " + "{\"name\": \"308\", \"model\": \"Peugeot 308\", \"year\": 2014}, " + "{\"name\": \"508\", \"model\": \"Peugeot 508\", \"year\": 2015}, " + "{\"name\": \"3008\", \"model\": \"Peugeot 3008\", \"year\": 2016}, " + "{\"name\": \"5008\", \"model\": \"Peugeot 5008\", \"year\": 2017}]}} ";

Not sure if there any other way to make this work, just in case, an easy fix is change the lane 93 for: if (Pattern.matches(choiceKey, evaluatedNode.toString()))

Thanks in advance!

BR, Adrián

[adrims]

Hey @lbroudoux,

Just for letting you know, everything works fine with the SCRIPT option, thanks!!

BR, Adrián.

[adrims]

Hey @lbroudoux,

This is the test I was using:

@Test
  public void testRegexpOperatorDispatcherWithRecursiveObjects() throws Exception {
    DispatchCases cases = new DispatchCases();
    Map<String, String> dispatchCases = new HashMap<>();
    dispatchCases.put(".*Peugeot.*", "OK");
    dispatchCases.put("default", "Bad");
    cases.putAll(dispatchCases);

    JsonEvaluationSpecification specifications = new JsonEvaluationSpecification();
    specifications.setExp("/cars");
    specifications.setOperator(EvaluationOperator.regexp);
    specifications.setCases(cases);

    String result = JsonExpressionEvaluator.evaluate(RECURSIVE_OBJECTS, specifications);
    assertEquals("OK", result);

  }

I need to identify different objects inside the message, also I tried with the operator “presence”, but if I’m not wrong is only binary option for 1 item.

Just for give you more context, my use case is something similar to the message I share above, but sometimes I’m gonna receive the object Peugot and I need to answer with response A, other times I’m gonna receive Seat, Volvo, etc… and for each case I need to answer with a different response. So I need to evaluate if the object is inside the message, and when I try to point to the “parent node” of the payload is when I receive the void string.

Let’s say I want to have something like this:

{
   exp: "/cars"
   operator: "regexp"
   cases: {
         ".*Peugeot.*": "Response A",
         ".*Volvo.*": "Response B",
         ".*Seat.*": "Response C",
         "Default": "Response A",
   }
}

I hope this helps to clarify 😉

BR, Adrián.