Changes to RestApiCall plugin

Changes includes
1. Perform validation of URL syntax during parameter parsing phase.
2. StringBuilder to replace string concatenation within loop.
3. Testcase addition.
4. Sonar critical issue fix for XmlJsonUtil
5) Use logger built-in string formatting rather then string concatenation
https://sonar.onap.org/component_issues/index?id=org.onap.ccsdk.sli.plugins%3Accsdk-sli-plugins#resolved=false|severities=CRITICAL

Change-Id: I884af51023bbd4983c43707aca97c398d24fc9de
Issue-Id: CCSDK-67
Signed-off-by: Gaurav Agrawal <gaurav.agrawal@huawei.com>

2 files changed, 42 insertions, 33 deletions

diff --git a/restapi-call-node/provider/src/main/java/org/onap/ccsdk/sli/plugins/restapicall/RestapiCallNode.java b/restapi-call-node/provider/src/main/java/org/onap/ccsdk/sli/plugins/restapicall/RestapiCallNode.java
index 20c13daac..c4ad4c55b 100644
--- a/restapi-call-node/provider/src/main/java/org/onap/ccsdk/sli/plugins/restapicall/RestapiCallNode.java
+++ b/restapi-call-node/provider/src/main/java/org/onap/ccsdk/sli/plugins/restapicall/RestapiCallNode.java
@@ -183,10 +183,10 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
                         URI retryUri = UriBuilder.fromUri(uri).host(uriTwo.getHost()).port(uriTwo.getPort()).scheme(
                                 uriTwo.getScheme()).build();
                         paramMap.put("restapiUrl", retryUri.toString());
-                        log.debug("URL was set to " + retryUri.toString());
-                        log.debug("Failed to communicate with host " + hostname +
-                                ". Request will be re-attempted using the host " + retryString + ".");
-                        log.debug("This is retry attempt " + retryCount + " out of " + retryPolicy.getMaximumRetries());
+                        log.debug("URL was set to {}", retryUri.toString());
+                        log.debug("Failed to communicate with host {}. Request will be re-attempted using the host {}.",
+                            hostname, retryString);
+                        log.debug("This is retry attempt {} out of {}", retryCount, retryPolicy.getMaximumRetries());
                         sendRequest(paramMap, ctx, retryCount);
                     } else {
                         log.debug("Maximum retries reached, calling setFailureResponseStatus.");
@@ -210,6 +210,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
         Parameters p = new Parameters();
         p.templateFileName = parseParam(paramMap, "templateFileName", false, null);
         p.restapiUrl = parseParam(paramMap, "restapiUrl", true, null);
+        validateUrl(p.restapiUrl);
         p.restapiUser = parseParam(paramMap, "restapiUser", false, null);
         p.restapiPassword = parseParam(paramMap, "restapiPassword", false, null);
         p.contentType = parseParam(paramMap, "contentType", false, null);
@@ -232,6 +233,14 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
         return p;
     }
 
+    private void validateUrl(String restapiUrl) throws SvcLogicException {
+        try {
+            URI.create(restapiUrl);
+        } catch (IllegalArgumentException e) {
+            throw new SvcLogicException("Invalid input of url " + e.getLocalizedMessage(), e);
+        }
+    }
+
     protected Set<String> getListNameList(Map<String, String> paramMap) {
         Set<String> ll = new HashSet<>();
         for (Map.Entry<String,String> entry : paramMap.entrySet())
@@ -251,7 +260,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
         }
 
         s = s.trim();
-        String value = "";
+        StringBuilder value = new StringBuilder();
         int i = 0;
         int i1 = s.indexOf('%');
         while (i1 >= 0) {
@@ -264,21 +273,21 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
             if (varValue == null)
                 varValue = "%" + varName + "%";
 
-            value += s.substring(i, i1);
-            value += varValue;
+            value.append(s.substring(i, i1));
+            value.append(varValue);
 
             i = i2 + 1;
             i1 = s.indexOf('%', i);
         }
-        value += s.substring(i);
+        value.append(s.substring(i));
 
-        log.info("Parameter " + name + ": [" + value + "]");
-        return value;
+        log.info("Parameter {}: [{}]", name, value);
+        return value.toString();
     }
 
     protected String buildXmlJsonRequest(SvcLogicContext ctx, String template, Format format)
         throws SvcLogicException {
-        log.info("Building " + format + " started");
+        log.info("Building {} started", format);
         long t1 = System.currentTimeMillis();
 
         template = expandRepeats(ctx, template, 1);
@@ -328,7 +337,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
             req = XmlJsonUtil.removeLastCommaJson(req);
 
         long t2 = System.currentTimeMillis();
-        log.info("Building " + format + " completed. Time: " + (t2 - t1));
+        log.info("Building {} completed. Time: {}", format, (t2 - t1));
 
         return req;
     }
@@ -368,7 +377,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
 
             String var1 = template.substring(i1 + 9, i2);
             String value1 = ctx.getAttribute(var1);
-            log.info("     " + var1 + ": " + value1);
+            log.info("     {}:{}", var1, value1);
             int n = 0;
             try {
                 n = Integer.parseInt(value1);
@@ -477,11 +486,11 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
         }
 
         long t2 = System.currentTimeMillis();
-        log.info("Response received. Time: " + (t2 - t1));
-        log.info("HTTP response code: " + r.code);
-        log.info("HTTP response message: " + r.message);
+        log.info("Response received. Time: {}", (t2 - t1));
+        log.info("HTTP response code: {}", r.code);
+        log.info("HTTP response message: {}", r.message);
         logHeaders(r.headers);
-        log.info("HTTP response: " + r.body);
+        log.info("HTTP response: {}", r.body);
 
         return r;
     }
@@ -504,7 +513,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
             ctx.init(kmf.getKeyManagers(), null, null);
             return ctx;
         } catch (Exception e) {
-            log.error("Error creating SSLContext: " + e.getMessage(), e);
+            log.error("Error creating SSLContext: {}", e.getMessage(), e);
         }
         return null;
     }
@@ -534,7 +543,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
             setResponseStatus(ctx, p.responsePrefix, r);
 
         } catch (SvcLogicException | IOException e) {
-            log.error("Error sending the request: " + e.getMessage(), e);
+            log.error("Error sending the request: {}", e.getMessage(), e);
 
             r = new HttpResponse();
             r.code = 500;
@@ -612,7 +621,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
             if (r.code == 301) {
                 String newUrl = response.getHeaders().getFirst("Location");
 
-                log.info("Got response code 301. Sending same request to URL: " + newUrl);
+                log.info("Got response code 301. Sending same request to URL: {}", newUrl);
 
                 webResource = client.resource(newUrl);
 
@@ -638,11 +647,11 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
         }
 
         long t2 = System.currentTimeMillis();
-        log.info("Response received. Time: " + (t2 - t1));
-        log.info("HTTP response code: " + r.code);
-        log.info("HTTP response message: " + r.message);
+        log.info("Response received. Time: {}", (t2 - t1));
+        log.info("HTTP response code: {}", r.code);
+        log.info("HTTP response message: {}", r.message);
         logHeaders(r.headers);
-        log.info("HTTP response: " + r.body);
+        log.info("HTTP response: {}", r.body);
 
         return r;
     }
@@ -657,7 +666,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
             String req;
 
             if (p.templateFileName == null) {
-                log.info("No template file name specified. Using default UEB template: " + defaultUebTemplateFileName);
+                log.info("No template file name specified. Using default UEB template: {}", defaultUebTemplateFileName);
                 p.templateFileName = defaultUebTemplateFileName;
             }
 
@@ -671,7 +680,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
                 ctx.setAttribute(pp + "httpResponse", r.body);
 
         } catch (SvcLogicException e) {
-            log.error("Error sending the request: " + e.getMessage(), e);
+            log.error("Error sending the request: {}", e.getMessage(), e);
 
             r = new HttpResponse();
             r.code = 500;
@@ -716,7 +725,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
         client.setConnectTimeout(5000);
         WebResource webResource = client.resource(urls[0]);
 
-        log.info("UEB URL: " + urls[0]);
+        log.info("UEB URL: {}", urls[0]);
         log.info("Sending request:");
         log.info(request);
         long t1 = System.currentTimeMillis();
@@ -744,10 +753,10 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
         }
 
         long t2 = System.currentTimeMillis();
-        log.info("Response received. Time: " + (t2 - t1));
-        log.info("HTTP response code: " + r.code);
+        log.info("Response received. Time: {}", (t2 - t1));
+        log.info("HTTP response code: {}", r.code);
         logHeaders(r.headers);
-        log.info("HTTP response:\n" + r.body);
+        log.info("HTTP response:\n {}", r.body);
 
         return r;
     }
@@ -760,7 +769,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
 
         log.info("Properties:");
         for (String name : ll)
-            log.info("--- " + name + ": " + String.valueOf(mm.get(name)));
+            log.info("--- {}:{}", name, String.valueOf(mm.get(name)));
     }
 
     protected void logHeaders(MultivaluedMap<String, String> mm) {
@@ -775,7 +784,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
         Collections.sort(ll);
 
         for (String name : ll)
-            log.info("--- " + name + ": " + String.valueOf(mm.get(name)));
+            log.info("--- {}:{}", name, String.valueOf(mm.get(name)));
     }
 
     public void setUebServers(String uebServers) {
diff --git a/restapi-call-node/provider/src/main/java/org/onap/ccsdk/sli/plugins/restapicall/XmlJsonUtil.java b/restapi-call-node/provider/src/main/java/org/onap/ccsdk/sli/plugins/restapicall/XmlJsonUtil.java
index b94f0a638..359501fc4 100644
--- a/restapi-call-node/provider/src/main/java/org/onap/ccsdk/sli/plugins/restapicall/XmlJsonUtil.java
+++ b/restapi-call-node/provider/src/main/java/org/onap/ccsdk/sli/plugins/restapicall/XmlJsonUtil.java
@@ -103,7 +103,7 @@ public final class XmlJsonUtil {
                 try {
                     length = Integer.parseInt(lengthStr);
                 } catch (Exception e) {
-                    log.warn("Invalid number for {}_length:{}", var, lengthStr);
+                    log.warn("Invalid number for {}_length:{}", var, lengthStr, e);
                 }
             }