Fix sonar issues holmes-common

[holmes/common.git] / holmes-actions / src / main / java / org / onap / holmes / common / aai / AaiQuery.java

diff --git a/holmes-actions/src/main/java/org/onap/holmes/common/aai/AaiQuery.java b/holmes-actions/src/main/java/org/onap/holmes/common/aai/AaiQuery.java
index ef96476..f20462f 100644 (file)
--- a/holmes-actions/src/main/java/org/onap/holmes/common/aai/AaiQuery.java
+++ b/holmes-actions/src/main/java/org/onap/holmes/common/aai/AaiQuery.java
@@ -13,12 +13,16 @@
  */
 package org.onap.holmes.common.aai;
 
+import java.io.IOException;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import javax.inject.Inject;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.http.HttpResponse;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.client.methods.HttpRequestBase;
+import org.apache.http.impl.client.CloseableHttpClient;
 import org.jvnet.hk2.annotations.Service;
 import org.onap.holmes.common.aai.config.AaiConfig;
 import org.onap.holmes.common.aai.entity.VmEntity;
@@ -68,7 +72,7 @@ public class AaiQuery {
     private String getVmResourceLinks(String vserverId, String vserverName) throws CorrelationException {
         String response = getResourceLinksResponse(vserverId, vserverName);
         List linkList = aaiResponseUtil.convertJsonToVmResourceLink(response);
-        if (linkList.size() != 0) {
+        if (!linkList.isEmpty()) {
             return aaiResponseUtil.convertJsonToVmResourceLink(response).get(0).getResourceLink();
         }
         return  "";
@@ -130,7 +134,7 @@ public class AaiQuery {
         addrSplits[1] = addrSplits[0] + "-" + addrSplits[2];
         addrSplits[2] = ret;
         addrSplits[0] = "api";
-        StringBuffer stringBuffer = new StringBuffer();
+        StringBuilder stringBuffer = new StringBuilder();
         for (String split : addrSplits) {
             stringBuffer.append("/" + split);
         }
@@ -139,11 +143,23 @@ public class AaiQuery {
 
     private String getResponse(String url) throws CorrelationException {
         String response;
+        CloseableHttpClient httpClient = null;
+        HttpGet httpGet = new HttpGet(url);
         try {
-            HttpResponse httpResponse = HttpsUtils.get(url, getHeaders());
+            httpClient = HttpsUtils.getHttpClient(HttpsUtils.DEFUALT_TIMEOUT);
+            HttpResponse httpResponse = HttpsUtils.get(httpGet, getHeaders(), httpClient);
             response = HttpsUtils.extractResponseEntity(httpResponse);
         } catch (Exception e) {
             throw new CorrelationException("Failed to get data from aai", e);
+        } finally {
+            httpGet.releaseConnection();
+            if (httpClient != null) {
+                try {
+                    httpClient.close();
+                } catch (IOException e) {
+                    log.warn("Failed to close http client!");
+                }
+            }
         }
         return response;
     }