Constanst.setRefValue() was always null

Setting the ref value when constant is an uri to allow implementations
to try load them in case default loading fails

Signed-off-by: Francisco Javier Tirado Sarti <[email protected]>

Author: fjtirado

api/src/main/java/io/serverlessworkflow/api/deserializers/ConstantsDeserializer.java

@@ -62,6 +62,7 @@ public Constants deserialize(JsonParser jp, DeserializationContext ctxt) throws
       constantsDefinition = node;
     } else {
       String constantsFileDef = node.asText();
+      constants.setRefValue(constantsFileDef);
       String constantsFileSrc = Utils.getResourceFileAsString(constantsFileDef);
       JsonNode constantsRefNode;
       ObjectMapper jsonWriter = new ObjectMapper();

api/src/main/java/io/serverlessworkflow/api/serializers/WorkflowSerializer.java

@@ -159,8 +159,12 @@ public void serialize(Workflow workflow, JsonGenerator gen, SerializerProvider p
       gen.writeEndArray();
     }
 
-    if (workflow.getConstants() != null && !workflow.getConstants().getConstantsDef().isEmpty()) {
-      gen.writeObjectField("constants", workflow.getConstants().getConstantsDef());
+    if (workflow.getConstants() != null) {
+      if (!workflow.getConstants().getConstantsDef().isEmpty()) {  
+          gen.writeObjectField("constants", workflow.getConstants().getConstantsDef());
+      } else if (workflow.getConstants().getRefValue() != null) {
+          gen.writeStringField("constants", workflow.getConstants().getRefValue());
+      }
     }
 
     if (workflow.getTimeouts() != null) {

api/src/test/java/io/serverlessworkflow/api/test/MarkupToWorkflowTest.java

@@ -569,6 +569,23 @@ public void testConstants(String workflowLocation) {
     JsonNode serbianTranslationNode = translationDogNode.get("Serbian");
     assertEquals("pas", serbianTranslationNode.asText());
   }
+  
+  
+  @ParameterizedTest
+  @ValueSource(strings = {"/features/constantsRef.json", "/features/constantsRef.yml"})
+  public void testConstantsRef(String workflowLocation) {
+    Workflow workflow = Workflow.fromSource(WorkflowTestUtils.readWorkflowFile(workflowLocation));
+
+    assertNotNull(workflow);
+    assertNotNull(workflow.getId());
+    assertNotNull(workflow.getName());
+    assertNotNull(workflow.getStates());
+
+    assertNotNull(workflow.getConstants());
+    Constants constants = workflow.getConstants();
+    assertNotNull(constants.getRefValue());
+  }
+  
 
   @ParameterizedTest
   @ValueSource(strings = {"/features/timeouts.json", "/features/timeouts.yml"})

api/src/test/resources/features/constantsRef.json

@@ -0,0 +1,17 @@
+{
+  "id": "secrets",
+  "version": "1.0",
+  "specVersion": "0.8",
+  "name": "Custom secrets flow",
+  "expressionLang": "abc",
+  "start": "TestFunctionRefs",
+  "constants": "contantsValues.json",
+  "states": [
+    {
+      "name": "TestFunctionRefs",
+      "type": "operation",
+      "actions": [],
+      "end": true
+    }
+  ]
+}

api/src/test/resources/features/constantsRef.yml

@@ -0,0 +1,14 @@
+id: secrets
+version: '1.0'
+specVersion: '0.8'
+name: Custom secrets flow
+expressionLang: abc
+start: TestFunctionRefs
+constants:
+  constantValues.json
+states:
+  - name: TestFunctionRefs
+    type: operation
+    actionMode: sequential
+    actions: 
+    end: true