Using specific exceptions in RestApiCallNode

Changes includes
1) Sonar critical fixes stating use of specific exceptions instead of generic one
2) Throw exception for invalid input of repeat times.
3) Added testcases
https://sonar.onap.org/component_issues/index?id=org.onap.ccsdk.sli.plugins%3Accsdk-sli-plugins#resolved=false|severities=CRITICAL

Change-Id: I2633f857e161bf7068c51ef835b7c2cd5eb5aa62
Issue-Id: CCSDK-67
Signed-off-by: Gaurav Agrawal <gaurav.agrawal@huawei.com>

1 files changed, 73 insertions, 32 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 ca227c722..4bdbd00a8 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
@@ -21,7 +21,11 @@
 
 package org.onap.ccsdk.sli.plugins.restapicall;
 
+import com.sun.jersey.api.client.ClientHandlerException;
+import com.sun.jersey.api.client.UniformInterfaceException;
 import java.io.FileInputStream;
+import java.io.IOException;
+import java.net.SocketException;
 import java.net.URI;
 import java.nio.file.Files;
 import java.nio.file.Paths;
@@ -45,6 +49,7 @@ import javax.ws.rs.core.MultivaluedMap;
 import javax.ws.rs.core.UriBuilder;
 
 import org.apache.commons.lang3.StringUtils;
+import org.codehaus.jettison.json.JSONException;
 import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
 import org.onap.ccsdk.sli.core.sli.SvcLogicException;
 import org.onap.ccsdk.sli.core.sli.SvcLogicJavaPlugin;
@@ -114,7 +119,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
             throws SvcLogicException {
 
         RetryPolicy retryPolicy = null;
-        HttpResponse r = null;
+        HttpResponse r = new HttpResponse();
         try {
             Parameters p = getParameters(paramMap);
             if (p.partner != null) {
@@ -151,9 +156,9 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
                             ctx.setAttribute(pp + entry.getKey(), entry.getValue());
                 }
             }
-        } catch (Exception e) {
+        } catch (SvcLogicException | JSONException e) {
             boolean shouldRetry = false;
-            if (e.getCause() instanceof java.net.SocketException) {
+            if (e.getCause().getCause() instanceof SocketException) {
                 shouldRetry = true;
             }
 
@@ -190,7 +195,8 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
                 } catch (Exception ex) {
                     log.error("Could not attempt retry.", ex);
                     String retryErrorMessage =
-                            "Retry attempt has failed. No further retry shall be attempted, calling setFailureResponseStatus.";
+                            "Retry attempt has failed. No further retry shall be attempted, calling " +
+                                "setFailureResponseStatus.";
                     setFailureResponseStatus(ctx, prefix, retryErrorMessage, r);
                 }
             }
@@ -270,7 +276,8 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
         return value;
     }
 
-    protected String buildXmlJsonRequest(SvcLogicContext ctx, String template, Format format) {
+    protected String buildXmlJsonRequest(SvcLogicContext ctx, String template, Format format)
+        throws SvcLogicException {
         log.info("Building " + format + " started");
         long t1 = System.currentTimeMillis();
 
@@ -291,7 +298,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
 
             int i2 = template.indexOf('}', i1 + 2);
             if (i2 < 0)
-                throw new RuntimeException("Template error: Matching } not found");
+                throw new SvcLogicException("Template error: Matching } not found");
 
             String var1 = template.substring(i1 + 2, i2);
             String value1 = format == Format.XML ? XmlJsonUtil.getXml(mm, var1) : XmlJsonUtil.getJson(mm, var1);
@@ -326,7 +333,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
         return req;
     }
 
-    protected String expandRepeats(SvcLogicContext ctx, String template, int level) {
+    protected String expandRepeats(SvcLogicContext ctx, String template, int level) throws SvcLogicException {
         StringBuilder newTemplate = new StringBuilder();
         int k = 0;
         while (k < template.length()) {
@@ -338,7 +345,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
 
             int i2 = template.indexOf(':', i1 + 9);
             if (i2 < 0)
-                throw new RuntimeException(
+                throw new SvcLogicException(
                         "Template error: Context variable name followed by : is required after repeat");
 
             // Find the closing }, store in i3
@@ -348,7 +355,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
             while (nn > 0 && i < template.length()) {
                 i3 = template.indexOf('}', i);
                 if (i3 < 0)
-                    throw new RuntimeException("Template error: Matching } not found");
+                    throw new SvcLogicException("Template error: Matching } not found");
                 int i32 = template.indexOf('{', i);
                 if (i32 >= 0 && i32 < i3) {
                     nn++;
@@ -365,8 +372,9 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
             int n = 0;
             try {
                 n = Integer.parseInt(value1);
-            } catch (Exception e) {
-                n = 0;
+            } catch (NumberFormatException e) {
+                throw new SvcLogicException("Invalid input of repeat interval, should be an integer value " +
+                    e.getLocalizedMessage(), e);
             }
 
             newTemplate.append(template.substring(k, i1));
@@ -392,12 +400,17 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
         return expandRepeats(ctx, newTemplate.toString(), level + 1);
     }
 
-    protected String readFile(String fileName) throws Exception {
-        byte[] encoded = Files.readAllBytes(Paths.get(fileName));
-        return new String(encoded, "UTF-8");
+    protected String readFile(String fileName) throws SvcLogicException {
+        try {
+            byte[] encoded = Files.readAllBytes(Paths.get(fileName));
+            return new String(encoded, "UTF-8");
+        } catch (IOException | SecurityException e) {
+            throw new SvcLogicException("Unable to read file " + fileName + e.getLocalizedMessage(), e);
+        }
     }
 
-    protected HttpResponse sendHttpRequest(String request, Parameters p) throws Exception {
+    protected HttpResponse sendHttpRequest(String request, Parameters p) throws SvcLogicException {
+
         ClientConfig config = new DefaultClientConfig();
         SSLContext ssl = null;
         if (p.ssl && p.restapiUrl.startsWith("https"))
@@ -451,7 +464,14 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
 
             webResourceBuilder.header("X-ECOMP-RequestID",org.slf4j.MDC.get("X-ECOMP-RequestID"));
 
-            ClientResponse response = webResourceBuilder.method(p.httpMethod.toString(), ClientResponse.class, request);
+            ClientResponse response;
+
+            try {
+                response = webResourceBuilder.method(p.httpMethod.toString(), ClientResponse.class, request);
+            } catch (UniformInterfaceException | ClientHandlerException e) {
+                throw new SvcLogicException("Exception while sending http request to client "
+                    + e.getLocalizedMessage(), e);
+            }
 
             r.code = response.getStatus();
             r.headers = response.getHeaders();
@@ -501,8 +521,8 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
         return null;
     }
 
-    protected void setFailureResponseStatus(SvcLogicContext ctx, String prefix, String errorMessage, HttpResponse r) {
-        HttpResponse resp = new HttpResponse();
+    protected void setFailureResponseStatus(SvcLogicContext ctx, String prefix, String errorMessage,
+        HttpResponse resp) {
         resp.code = 500;
         resp.message = errorMessage;
         String pp = prefix != null ? prefix + '.' : "";
@@ -525,7 +545,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
             r = sendHttpData(data, p);
             setResponseStatus(ctx, p.responsePrefix, r);
 
-        } catch (Exception e) {
+        } catch (SvcLogicException | IOException e) {
             log.error("Error sending the request: " + e.getMessage(), e);
 
             r = new HttpResponse();
@@ -563,7 +583,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
         return p;
     }
 
-    protected HttpResponse sendHttpData(byte[] data, FileParam p) {
+    protected HttpResponse sendHttpData(byte[] data, FileParam p) throws SvcLogicException {
         Client client = Client.create();
         client.setConnectTimeout(5000);
         client.setFollowRedirects(true);
@@ -580,11 +600,18 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
         if (!p.skipSending) {
             String tt = "application/octet-stream";
 
-            ClientResponse response = null;
-            if (p.httpMethod == HttpMethod.POST)
-                response = webResource.accept(tt).type(tt).post(ClientResponse.class, data);
-            else if (p.httpMethod == HttpMethod.PUT)
-                response = webResource.accept(tt).type(tt).put(ClientResponse.class, data);
+            ClientResponse response;
+            try {
+                if (p.httpMethod == HttpMethod.POST)
+                    response = webResource.accept(tt).type(tt).post(ClientResponse.class, data);
+                else if (p.httpMethod == HttpMethod.PUT)
+                    response = webResource.accept(tt).type(tt).put(ClientResponse.class, data);
+                else
+                    throw new SvcLogicException("Http operation" + p.httpMethod + "not supported");
+            } catch (UniformInterfaceException | ClientHandlerException e) {
+                throw new SvcLogicException("Exception while sending http request to client " +
+                    e.getLocalizedMessage(), e);
+            }
 
             r.code = response.getStatus();
             r.headers = response.getHeaders();
@@ -601,10 +628,17 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
 
                 webResource = client.resource(newUrl);
 
-                if (p.httpMethod == HttpMethod.POST)
-                    response = webResource.accept(tt).type(tt).post(ClientResponse.class, data);
-                else if (p.httpMethod == HttpMethod.PUT)
-                    response = webResource.accept(tt).type(tt).put(ClientResponse.class, data);
+                try {
+                    if (p.httpMethod == HttpMethod.POST)
+                        response = webResource.accept(tt).type(tt).post(ClientResponse.class, data);
+                    else if (p.httpMethod == HttpMethod.PUT)
+                        response = webResource.accept(tt).type(tt).put(ClientResponse.class, data);
+                    else
+                        throw new SvcLogicException("Http operation" + p.httpMethod + "not supported");
+                } catch (UniformInterfaceException | ClientHandlerException e) {
+                    throw new SvcLogicException("Exception while sending http request to client " +
+                        e.getLocalizedMessage(), e);
+                }
 
                 r.code = response.getStatus();
                 etag = response.getEntityTag();
@@ -648,7 +682,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
             if (r.body != null)
                 ctx.setAttribute(pp + "httpResponse", r.body);
 
-        } catch (Exception e) {
+        } catch (SvcLogicException e) {
             log.error("Error sending the request: " + e.getMessage(), e);
 
             r = new HttpResponse();
@@ -682,7 +716,7 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
         return p;
     }
 
-    protected HttpResponse postOnUeb(String request, UebParam p) throws Exception {
+    protected HttpResponse postOnUeb(String request, UebParam p) throws SvcLogicException {
         String[] urls = uebServers.split(" ");
         for (int i = 0; i < urls.length; i++) {
             if (!urls[i].endsWith("/"))
@@ -706,7 +740,14 @@ public class RestapiCallNode implements SvcLogicJavaPlugin {
             String tt = "application/json";
             String tt1 = tt + ";charset=UTF-8";
 
-            ClientResponse response = webResource.accept(tt).type(tt1).post(ClientResponse.class, request);
+            ClientResponse response;
+
+            try {
+                response = webResource.accept(tt).type(tt1).post(ClientResponse.class, request);
+            } catch (UniformInterfaceException | ClientHandlerException e) {
+                throw new SvcLogicException("Exception while posting http request to client " +
+                    e.getLocalizedMessage(), e);
+            }
 
             r.code = response.getStatus();
             r.headers = response.getHeaders();