Allow brackets inside Tekton expressions

pkg/template/event.go

@@ -88,7 +88,7 @@ func applyEventValuesToParams(params []pipelinev1.Param, body []byte, header htt
  for idx, p := range params {
  pValue := p.Value.StringVal
  // Find all expressions wrapped in $() from the value
- expressions := tektonVar.FindAllString(pValue, -1)
+ expressions := findTektonExpressions(pValue)
  for _, expr := range expressions {
  val, err := ParseJSONPath(event, expr)
  if err != nil {
@@ -100,3 +100,24 @@ func applyEventValuesToParams(params []pipelinev1.Param, body []byte, header htt
  }
  return params, nil
 }
+
+// findTektonExpressions searches for and returns a slice of
+// all substrings that are wrapped in $()
+func findTektonExpressions(in string) []string {
+ results := []string{}
+
+ // No expressions to return
+ if !strings.Contains(in, "$(") {
+ return results
+ }
+ // Splits string on $( to find potential Tekton expressions
+ s := strings.Split(in, "$(")
+ for _, i := range s {
+ // Only a Tekton expression if it also contains a ) following the $(
+ if strings.Contains(i, ")") {
+ // Extract until the last instance of ) and wrap it in $()
+ results = append(results, fmt.Sprintf("$(%s)", i[:strings.LastIndex(i, ")")]))
+ }
+ }
+ return results
+}