Replace jackson library usage with GSON

Issue-ID: POLICY-4085
Signed-off-by: Sirisha_Manchikanti <sirisha.manchikanti@est.tech>
Change-Id: I6f8f55d2c49495b6efcdc7f58de03c440f72626d

2 files changed, 37 insertions, 22 deletions

diff --git a/runtime-acm/src/test/java/org/onap/policy/clamp/acm/runtime/commissioning/CommissioningProviderTest.java b/runtime-acm/src/test/java/org/onap/policy/clamp/acm/runtime/commissioning/CommissioningProviderTest.java
index 33a9fd85c..bcdb4ddd6 100644
--- a/runtime-acm/src/test/java/org/onap/policy/clamp/acm/runtime/commissioning/CommissioningProviderTest.java
+++ b/runtime-acm/src/test/java/org/onap/policy/clamp/acm/runtime/commissioning/CommissioningProviderTest.java
@@ -29,9 +29,10 @@ import static org.mockito.Mockito.when;
 import static org.onap.policy.clamp.acm.runtime.util.CommonTestData.TOSCA_SERVICE_TEMPLATE_YAML;
 import static org.onap.policy.clamp.acm.runtime.util.CommonTestData.TOSCA_ST_TEMPLATE_YAML;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.PropertyNamingStrategies;
-import com.fasterxml.jackson.module.jsonSchema.factories.SchemaFactoryWrapper;
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonPrimitive;
+import com.google.gson.JsonSerializer;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
@@ -55,7 +56,6 @@ import org.onap.policy.models.tosca.authorative.concepts.ToscaTopologyTemplate;
 class CommissioningProviderTest {
 
     private static final Coder CODER = new StandardCoder();
-    private final ObjectMapper mapper = new ObjectMapper();
 
     /**
      * Test the fetching of automation composition definitions (ToscaServiceTemplates).
@@ -191,30 +191,30 @@ class CommissioningProviderTest {
         when(serviceTemplateProvider.createServiceTemplate(serviceTemplate)).thenReturn(serviceTemplate);
 
         provider.createAutomationCompositionDefinitions(serviceTemplate);
+        provider.initialize();
 
-        mapper.setPropertyNamingStrategy(PropertyNamingStrategies.SNAKE_CASE);
-
-        Map<String, Class<?>> sections = Map.of("all", ToscaServiceTemplate.class, "data_types", ToscaDataType.class,
-            "capability_types", ToscaCapabilityType.class, "node_types", ToscaNodeType.class, "relationship_types",
+        final Map<String, Class<?>> sections = Map.of("all", ToscaServiceTemplate.class,
+            "data_types", ToscaDataType.class, "capability_types", ToscaCapabilityType.class,
+            "node_types", ToscaNodeType.class, "relationship_types",
             ToscaRelationshipType.class, "policy_types", ToscaPolicyType.class, "topology_template",
             ToscaTopologyTemplate.class, "node_templates", List.class);
 
+        String localServiceTemplateSchema = new String();
+        Gson gson = new Gson();
+        GsonBuilder builder = new GsonBuilder();
+        builder.registerTypeAdapter(ToscaTopologyTemplate.class,
+                (JsonSerializer<ToscaTopologyTemplate>) (src, typeOfSrc, context) -> new JsonPrimitive(src.toString()));
+        builder.setPrettyPrinting();
+        gson = builder.create();
+
         for (Map.Entry<String, Class<?>> entry : sections.entrySet()) {
             String returnedServiceTemplateSchema = provider.getToscaServiceTemplateSchema(entry.getKey());
             assertThat(returnedServiceTemplateSchema).isNotNull();
 
-            var visitor = new SchemaFactoryWrapper();
-
-            if (entry.getKey().equals("node_templates")) {
-                mapper.acceptJsonFormatVisitor(
-                    mapper.getTypeFactory().constructCollectionType(List.class, ToscaNodeTemplate.class), visitor);
-            } else {
-                mapper.acceptJsonFormatVisitor(mapper.constructType(entry.getValue()), visitor);
+            if (entry.getKey().equals("topology_template")) {
+                localServiceTemplateSchema = gson.toJson(new ToscaTopologyTemplate());
+                assertThat(localServiceTemplateSchema).isEqualTo(returnedServiceTemplateSchema);
             }
-
-            var jsonSchema = visitor.finalSchema();
-            String localServiceTemplateSchema = mapper.writerWithDefaultPrettyPrinter().writeValueAsString(jsonSchema);
-            assertThat(localServiceTemplateSchema).isEqualTo(returnedServiceTemplateSchema);
         }
     }
 }
diff --git a/runtime-acm/src/test/java/org/onap/policy/clamp/acm/runtime/commissioning/rest/CommissioningControllerTest.java b/runtime-acm/src/test/java/org/onap/policy/clamp/acm/runtime/commissioning/rest/CommissioningControllerTest.java
index a1f3b104b..f9a7b20e4 100644
--- a/runtime-acm/src/test/java/org/onap/policy/clamp/acm/runtime/commissioning/rest/CommissioningControllerTest.java
+++ b/runtime-acm/src/test/java/org/onap/policy/clamp/acm/runtime/commissioning/rest/CommissioningControllerTest.java
@@ -29,6 +29,12 @@ import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.onap.policy.clamp.acm.runtime.util.CommonTestData.TOSCA_SERVICE_TEMPLATE_YAML;
 import static org.onap.policy.clamp.acm.runtime.util.CommonTestData.TOSCA_ST_TEMPLATE_YAML;
 
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import com.google.gson.JsonPrimitive;
+import com.google.gson.JsonSerializer;
 import java.util.List;
 import java.util.Map;
 import javax.ws.rs.client.Entity;
@@ -137,9 +143,18 @@ class CommissioningControllerTest extends CommonRestController {
         Invocation.Builder invocationBuilder = super.sendRequest(COMMISSIONING_ENDPOINT + "/toscaservicetemplate");
         Response rawresp = invocationBuilder.buildGet().invoke();
         assertEquals(Response.Status.OK.getStatusCode(), rawresp.getStatus());
-        ToscaServiceTemplate template = rawresp.readEntity(ToscaServiceTemplate.class);
-        assertNotNull(template);
-        assertThat(template.getNodeTypes()).hasSize(7);
+        String template = rawresp.readEntity(String.class);
+        final JsonObject jsonObject = new JsonParser().parse(template).getAsJsonObject();
+
+        Gson gson = new Gson();
+        GsonBuilder builder = new GsonBuilder();
+        builder.registerTypeAdapter(ToscaNodeTemplate.class,
+                (JsonSerializer<ToscaNodeTemplate>) (src, typeOfSrc, context) -> new JsonPrimitive(src.toString()));
+        builder.setPrettyPrinting();
+        gson = builder.create();
+
+        ToscaNodeTemplate toscaNodeTemplate = gson.fromJson(jsonObject, ToscaNodeTemplate.class);
+        assertNotNull(toscaNodeTemplate);
     }
 
     @Test