Migrate to gson

Issue-ID: VNFSDK-553

Signed-off-by: priyanka.akhade <priyanka.akhade@huawei.com>
Change-Id: Ideb0e20ebe09945f221cc31560922aae9e375dde

3 files changed, 21 insertions, 10 deletions

diff --git a/csarvalidation/src/main/java/org/onap/cvc/csar/CSARArchive.java b/csarvalidation/src/main/java/org/onap/cvc/csar/CSARArchive.java
index 2055cf2..1c05948 100644
--- a/csarvalidation/src/main/java/org/onap/cvc/csar/CSARArchive.java
+++ b/csarvalidation/src/main/java/org/onap/cvc/csar/CSARArchive.java
@@ -15,8 +15,7 @@
  */
 package org.onap.cvc.csar;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
+import com.google.gson.Gson;
 import org.apache.commons.io.FileUtils;
 import org.apache.commons.lang3.tuple.Pair;
 import org.onap.cvc.csar.parser.SourcesParser;
@@ -43,6 +42,7 @@ import java.util.Optional;
  */
 public class CSARArchive implements AutoCloseable {
 
+    private static Gson gson = new Gson();
     public static final String SOL0004_2_4_1 = "V2.4.1 (2018-02)";
 
     public static final String TEMP_DIR = "/tmp";
@@ -156,8 +156,8 @@ public class CSARArchive implements AutoCloseable {
 
         public String toString() {
             try {
-                return new ObjectMapper().writeValueAsString(this);
-            } catch (JsonProcessingException e) {
+                return gson.toJson(this);
+            } catch (Exception e) { //NOSONAR
                 //never occurs
                 return "{}";
             }
diff --git a/csarvalidation/src/main/java/org/onap/cvc/csar/VTPValidateCSAR.java b/csarvalidation/src/main/java/org/onap/cvc/csar/VTPValidateCSAR.java
index 20700ac..043d4dc 100644
--- a/csarvalidation/src/main/java/org/onap/cvc/csar/VTPValidateCSAR.java
+++ b/csarvalidation/src/main/java/org/onap/cvc/csar/VTPValidateCSAR.java
@@ -21,7 +21,6 @@ import java.util.Date;
 import java.util.List;
 import java.util.Properties;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
 import org.onap.cli.fw.cmd.OnapCommand;
 import org.onap.cli.fw.error.OnapCommandException;
 import org.onap.cli.fw.error.OnapCommandExecutionFailed;
@@ -34,13 +33,14 @@ import org.onap.cvc.csar.CSARArchive.CSARError;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
+import com.google.gson.Gson;
 
 /**
  * Validates CSAR
  */
 @OnapCommandSchema(schema = "vtp-validate-csar.yaml")
 public class VTPValidateCSAR extends OnapCommand {
+    private static Gson gson = new Gson();
     private static final Logger LOG = LoggerFactory.getLogger(VTPValidateCSAR.class);
     public static final String PNF_ATTRIBUTE_NAME = "pnf";
 
@@ -268,15 +268,15 @@ public class VTPValidateCSAR extends OnapCommand {
         return validation;
     }
 
-    private void setOperationResult(CSARValidation validation) throws JsonProcessingException {
+    private void setOperationResult(CSARValidation validation) throws Exception { //NOSONAR
         this.getResult().getRecordsMap().get("vnf").getValues().add(
-                new ObjectMapper().writeValueAsString(validation.getVnf()));
+                gson.toJson(validation.getVnf()));
         this.getResult().getRecordsMap().get("date").getValues().add(validation.getDate());
         this.getResult().getRecordsMap().get("criteria").getValues().add(validation.getCriteria());
         this.getResult().getRecordsMap().get("results").getValues().add(
-                new ObjectMapper().writeValueAsString(validation.getResults()));
+                gson.toJson(validation.getResults()));
 
-        this.getResult().setOutput(new ObjectMapper().writeValueAsString(validation));
+        this.getResult().setOutput(gson.toJson(validation));
         this.getResult().setType(OnapCommandResultType.TEXT);
     }
 
diff --git a/csarvalidation/src/test/java/org/onap/cvc/csar/CSARArchiveTest.java b/csarvalidation/src/test/java/org/onap/cvc/csar/CSARArchiveTest.java
index bd9b191..2831532 100644
--- a/csarvalidation/src/test/java/org/onap/cvc/csar/CSARArchiveTest.java
+++ b/csarvalidation/src/test/java/org/onap/cvc/csar/CSARArchiveTest.java
@@ -21,6 +21,7 @@ import java.util.Arrays;
 
 import org.junit.Test;
 
+import static org.junit.Assert.assertEquals;
 public class CSARArchiveTest {
 
     @Test
@@ -42,4 +43,14 @@ public class CSARArchiveTest {
         }
     }
 
+    @Test
+    public void testErrorToStringForGson(){
+
+        String expected = "{\"code\":\"0x1001\",\"message\":\"Invalid value. Entry [testEntry]. Valid values are [-1]. InvalidEntry\",\"file\":\"abc\",\"lineNumber\":-1}";
+        CSARArchive.CSARErrorInvalidEntryValue testError =
+                new CSARArchive.CSARErrorInvalidEntryValue("testEntry","abc","InvalidEntry","-1");
+        assertEquals(expected,testError.toString());
+
+    }
+
 }