create a directive for the template node

The directive is called hideNullJson, it hides json when it is null to deal with optional json attributes

Change-Id: I0b7a2c2f19e6f83e0d8c8c6f3552889c83dc997f
Issue-ID: CCSDK-903
Signed-off-by: Smokowski, Kevin (ks6305) <kevin.smokowski@att.com>

2 files changed, 68 insertions, 0 deletions

diff --git a/template-node/provider/src/test/java/org/onap/ccsdk/sli/plugins/template/HideNullJsonTest.java b/template-node/provider/src/test/java/org/onap/ccsdk/sli/plugins/template/HideNullJsonTest.java
new file mode 100755
index 00000000..1fb1f676
--- /dev/null
+++ b/template-node/provider/src/test/java/org/onap/ccsdk/sli/plugins/template/HideNullJsonTest.java
@@ -0,0 +1,46 @@
+package org.onap.ccsdk.sli.plugins.template;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.junit.Test;
+import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
+
+public class HideNullJsonTest {
+
+    @Test
+    public void testSampleTemplate() throws Exception {
+        TemplateNode t = new MockTemplateNode();
+
+        Map<String, String> params = new HashMap<String, String>();
+        params.put(TemplateNode.PREFIX_KEY, "output");
+        params.put(TemplateNode.OUTPUT_PATH_KEY, "mycontainer");
+        params.put(TemplateNode.TEMPLATE_PATH, "src/test/resources/HideNullJson.vtl");
+        
+        //Setup sample data to feed into the directive
+        params.put("service-type", "\"VPN\""); //the value is quoted to test an override
+        params.put("svc-request-id", "REQ001");
+        params.put("svc-action", "CREATE");
+        params.put("service-instance-id", "SVC001");
+        params.put("customerNameTag", "customer-name");
+        params.put("customer-name", "TestCust");
+        params.put("siidTag", "\"service-instance-id\""); //the value is quoted to test an override
+
+        SvcLogicContext ctx = new SvcLogicContext();
+        t.evaluateTemplate(params, ctx);
+        String result = ctx.getAttribute("output.mycontainer");
+        assertTrue(result.contains("\"svc-request-id\":\"REQ001\","));
+        assertTrue(result.contains("\"svc-action\":\"CREATE\""));
+        assertFalse(result.contains("\"svc-action\":\"CREATE\",")); // there should be no trailing comma
+        assertTrue(result.contains("\"service-type\":\"VPN\","));
+        assertTrue(result.contains("\"customer-name\":\"TestCust\","));
+        assertTrue(result.contains("\"service-instance-id\":\"SVC001\""));
+        assertFalse(result.contains("\"service-instance-id\":\"SVC001\",")); // there should be no trailing comma
+        //This should be hidden by the directive because the parameter was never populated
+        assertFalse(result.contains("customer-phone-number"));
+    }
+
+}
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diff --git a/template-node/provider/src/test/resources/HideNullJson.vtl b/template-node/provider/src/test/resources/HideNullJson.vtl
new file mode 100755
index 00000000..30667945
--- /dev/null
+++ b/template-node/provider/src/test/resources/HideNullJson.vtl
@@ -0,0 +1,22 @@
+## This is an example comment
+## This velocity template is used to test the hideNullJson directive
+{
+  "input": {
+    "request-header": {
+## by default the values parameters provided are surrounded in double quotes and separated by a colon
+      #hideNullJson("svc-request-id",$svc-request-id)#end
+## override default settings so the comma isn't written
+      #hideNullJson("svc-action",$svc-action, true, true, false)#end
+    },
+    "service-information": {
+## if we look at the values in parameters we see service-type is already surrounded by quotes
+## we override the default so the string isn't surrounded by excess quotes
+      #hideNullJson("service-type",$service-type,true,false,true)#end
+## the first parameter doesn't need to be a literal
+      #hideNullJson($customerNameTag,$customer-name)#end
+## if the first parameter already has already been quoted we can override the default
+      #hideNullJson($siidTag,$service-instance-id,false,true,false)#end
+      #hideNullJson("customer-phone-number",$customer-phone-number)#end
+    }
+  }
+}
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