Change the static method in util.

Change the static method in util class to unstatic. romove the unused class.

Change-Id: Ieac5b817e32b7b02c00e1d5b247a82e0aadcab32
Issue-ID: AAI-358
Signed-off-by: lizi00164331 <li.zi30@zte.com.cn>

10 files changed, 35 insertions, 80 deletions

diff --git a/esr-mgr/src/main/java/org/onap/aai/esr/resource/EmsManager.java b/esr-mgr/src/main/java/org/onap/aai/esr/resource/EmsManager.java
index ba51f43..63622e1 100644
--- a/esr-mgr/src/main/java/org/onap/aai/esr/resource/EmsManager.java
+++ b/esr-mgr/src/main/java/org/onap/aai/esr/resource/EmsManager.java
@@ -25,7 +25,6 @@ import io.swagger.annotations.ApiResponses;
 import org.eclipse.jetty.http.HttpStatus;
 import org.onap.aai.esr.entity.rest.EmsRegisterInfo;
 import org.onap.aai.esr.util.ExtsysUtil;
-import org.onap.aai.esr.util.RestResponseUtil;
 import org.onap.aai.esr.wrapper.EmsManagerWrapper;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;  
diff --git a/esr-mgr/src/main/java/org/onap/aai/esr/util/EmsManagerUtil.java b/esr-mgr/src/main/java/org/onap/aai/esr/util/EmsManagerUtil.java
index 40ebd27..916c9e7 100644
--- a/esr-mgr/src/main/java/org/onap/aai/esr/util/EmsManagerUtil.java
+++ b/esr-mgr/src/main/java/org/onap/aai/esr/util/EmsManagerUtil.java
@@ -26,7 +26,7 @@ import org.onap.aai.esr.entity.rest.FtpAddr;
 
 public class EmsManagerUtil {
   
-  public static EsrEmsDetail emsRegisterInfo2EsrEms(EmsRegisterInfo emsRegisterInfo) {
+  public EsrEmsDetail emsRegisterInfo2EsrEms(EmsRegisterInfo emsRegisterInfo) {
     EsrEmsDetail esrEms = new EsrEmsDetail();
     esrEms.setEmsId(ExtsysUtil.generateId());
     ArrayList<EsrSystemInfo> authInfos = new ArrayList<EsrSystemInfo>();
@@ -35,7 +35,7 @@ public class EmsManagerUtil {
     return esrEms;
   }
 
-  private static ArrayList<EsrSystemInfo> getAuthInfosFromRegisterData(EmsRegisterInfo emsRegisterInfo) {
+  private ArrayList<EsrSystemInfo> getAuthInfosFromRegisterData(EmsRegisterInfo emsRegisterInfo) {
     ArrayList<EsrSystemInfo> authInfos = new ArrayList<EsrSystemInfo>();
     EsrSystemInfo resouceAuthInfo = new EsrSystemInfo();
     EsrSystemInfo performanceAuthInfo = new EsrSystemInfo();
@@ -49,7 +49,7 @@ public class EmsManagerUtil {
     return authInfos;
   }
   
-  private static EsrSystemInfo getAuthInfoFromFtpAddr(EmsRegisterInfo emsRegisterInfo, String systemType) {
+  private EsrSystemInfo getAuthInfoFromFtpAddr(EmsRegisterInfo emsRegisterInfo, String systemType) {
     EsrSystemInfo authInfo = new EsrSystemInfo();
     FtpAddr ftpAddr = new FtpAddr();
     if(systemType.equals(SystemType.EMS_RESOUCE.toString())) {
@@ -72,7 +72,7 @@ public class EmsManagerUtil {
     return authInfo;
   }
   
-  private static EsrSystemInfo getAuthInfoFromAlarmAddr(EmsRegisterInfo emsRegisterInfo) {
+  private EsrSystemInfo getAuthInfoFromAlarmAddr(EmsRegisterInfo emsRegisterInfo) {
     EsrSystemInfo authInfo = new EsrSystemInfo();
     AlarmAddr alarmAddr = new AlarmAddr();
     alarmAddr = emsRegisterInfo.getAlarmAddr();
@@ -88,7 +88,7 @@ public class EmsManagerUtil {
     return authInfo;
   }
   
-  public static EmsRegisterInfo EsrEms2EmsRegisterInfo(EsrEmsDetail esrEms) {
+  public EmsRegisterInfo EsrEms2EmsRegisterInfo(EsrEmsDetail esrEms) {
     EmsRegisterInfo emsRegisterInfo = new EmsRegisterInfo();
     ArrayList<EsrSystemInfo> esrSystemInfo = new ArrayList<EsrSystemInfo>();
     EsrSystemInfo authInfo = new EsrSystemInfo();
@@ -117,7 +117,7 @@ public class EmsManagerUtil {
     return emsRegisterInfo;
   }
   
-  private static FtpAddr getFtpAddrFromAuthInfo(EsrSystemInfo authInfo) {
+  private FtpAddr getFtpAddrFromAuthInfo(EsrSystemInfo authInfo) {
     FtpAddr ftpAddr = new FtpAddr();
     ftpAddr.setFtptype(authInfo.getType());
     ftpAddr.setIp(authInfo.getIpAddress());
@@ -129,7 +129,7 @@ public class EmsManagerUtil {
     return ftpAddr;
   }
   
-  private static AlarmAddr getAlarmAddrFromAuthInfo(EsrSystemInfo authInfo) {
+  private AlarmAddr getAlarmAddrFromAuthInfo(EsrSystemInfo authInfo) {
     AlarmAddr alarmAddr = new AlarmAddr();
     alarmAddr.setIp(authInfo.getIpAddress());
     alarmAddr.setPassword(authInfo.getPassword());
diff --git a/esr-mgr/src/main/java/org/onap/aai/esr/util/RestResponseUtil.java b/esr-mgr/src/main/java/org/onap/aai/esr/util/RestResponseUtil.java
deleted file mode 100644
index 3c27178..0000000
--- a/esr-mgr/src/main/java/org/onap/aai/esr/util/RestResponseUtil.java
+++ /dev/null
@@ -1,49 +0,0 @@
-/**
- * Copyright 2016-2017 ZTE Corporation.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.onap.aai.esr.util;
-
-import javax.ws.rs.core.Response;
-import javax.ws.rs.core.Response.Status;
-
-public class RestResponseUtil {
-  
-  /**
-   * get http success entity.
-   */
-  public static Response getSuccessResponse(Object obj) {
-    if (obj != null) {
-      return Response.ok(obj).build();
-    } else {
-      return Response.ok().build();
-    }
-  }
-
-  public static Response getCreateSussceeResponse(Object obj) {
-    return Response.status(Status.CREATED).entity(obj).build();
-  }
-  
-  /**
-   * get http error entity.
-   */
-  public static Response getErrorResponse(Object obj) {
-    if (obj != null) {
-      return Response.status(Response.Status.INTERNAL_SERVER_ERROR).entity(obj).build();
-    } else {
-      return Response.serverError().build();
-    }
-
-  }
-}
diff --git a/esr-mgr/src/main/java/org/onap/aai/esr/util/ThirdpartySdncManagerUtil.java b/esr-mgr/src/main/java/org/onap/aai/esr/util/ThirdpartySdncManagerUtil.java
index 2cf4a0a..a2d1e1a 100644
--- a/esr-mgr/src/main/java/org/onap/aai/esr/util/ThirdpartySdncManagerUtil.java
+++ b/esr-mgr/src/main/java/org/onap/aai/esr/util/ThirdpartySdncManagerUtil.java
@@ -25,7 +25,7 @@ import org.onap.aai.esr.entity.rest.ThirdpartySdncRegisterInfo;
 
 public class ThirdpartySdncManagerUtil {
   
-  public static EsrThirdpartySdncDetail sdncRegisterInfo2EsrSdnc(ThirdpartySdncRegisterInfo sdncRegisterInfo) {
+  public EsrThirdpartySdncDetail sdncRegisterInfo2EsrSdnc(ThirdpartySdncRegisterInfo sdncRegisterInfo) {
     EsrThirdpartySdncDetail esrThirdpartySdnc = new EsrThirdpartySdncDetail();
     sdncRegisterInfo.setThirdpartySdncId(ExtsysUtil.generateId());
     esrThirdpartySdnc.setThirdpartySdncId(sdncRegisterInfo.getThirdpartySdncId());
@@ -35,7 +35,7 @@ public class ThirdpartySdncManagerUtil {
     return esrThirdpartySdnc;
   }
   
-  private static EsrSystemInfoList getEsrSystemInfoList(ThirdpartySdncRegisterInfo sdncRegisterInfo) {
+  private EsrSystemInfoList getEsrSystemInfoList(ThirdpartySdncRegisterInfo sdncRegisterInfo) {
     EsrSystemInfoList esrSystemInfoList = new EsrSystemInfoList();
     ArrayList<EsrSystemInfo> esrSystemInfo = new ArrayList<EsrSystemInfo>();
     EsrSystemInfo authInfo = new EsrSystemInfo();
@@ -54,7 +54,7 @@ public class ThirdpartySdncManagerUtil {
     return esrSystemInfoList;
   }
 
-  public static ThirdpartySdncRegisterInfo esrSdnc2SdncRegisterInfo(EsrThirdpartySdncDetail esrSdnc) {
+  public ThirdpartySdncRegisterInfo esrSdnc2SdncRegisterInfo(EsrThirdpartySdncDetail esrSdnc) {
     ThirdpartySdncRegisterInfo registerSdncInfo = new ThirdpartySdncRegisterInfo();
     EsrSystemInfo esrSystemInfo = esrSdnc.getEsrSystemInfoList().getEsrSystemInfo().get(0);
     registerSdncInfo.setThirdpartySdncId(esrSdnc.getThirdpartySdncId());
diff --git a/esr-mgr/src/main/java/org/onap/aai/esr/util/VimManagerUtil.java b/esr-mgr/src/main/java/org/onap/aai/esr/util/VimManagerUtil.java
index 06a8ef0..6393f12 100644
--- a/esr-mgr/src/main/java/org/onap/aai/esr/util/VimManagerUtil.java
+++ b/esr-mgr/src/main/java/org/onap/aai/esr/util/VimManagerUtil.java
@@ -28,7 +28,7 @@ import org.onap.aai.esr.entity.rest.VimRegisterInfo;
 
 public class VimManagerUtil {
   
-  public static CloudRegionDetail vimRegisterInfo2CloudRegion(VimRegisterInfo vimRegisterInfo) {
+  public CloudRegionDetail vimRegisterInfo2CloudRegion(VimRegisterInfo vimRegisterInfo) {
     CloudRegionDetail cloudRegion = new CloudRegionDetail();
     EsrSystemInfoList esrSystemInfoList = new EsrSystemInfoList();
     EsrSystemInfo esrSystemInfoObj = new EsrSystemInfo();
@@ -49,7 +49,7 @@ public class VimManagerUtil {
     return cloudRegion;
   }
 
-  private static EsrSystemInfo vimAuthInfo2EsrSystemInfoObj(ArrayList<VimAuthInfo> vimAuthInfos) {
+  private EsrSystemInfo vimAuthInfo2EsrSystemInfoObj(ArrayList<VimAuthInfo> vimAuthInfos) {
     EsrSystemInfo esrSystemInfoObj = new EsrSystemInfo();
     VimAuthInfo vimAuthInfo = new VimAuthInfo();
     vimAuthInfo = vimAuthInfos.get(0);
@@ -65,7 +65,7 @@ public class VimManagerUtil {
     return esrSystemInfoObj;
   }
   
-  private static VimAuthInfo authInfo2VimAuthInfo(EsrSystemInfo authInfo) {
+  private VimAuthInfo authInfo2VimAuthInfo(EsrSystemInfo authInfo) {
     VimAuthInfo vimAuthInfo = new VimAuthInfo();
     vimAuthInfo.setAuthUrl(authInfo.getServiceUrl());
     vimAuthInfo.setCloudDomain(authInfo.getCloudDomain());
@@ -76,7 +76,7 @@ public class VimManagerUtil {
     return vimAuthInfo;
   }
   
-  public static VimRegisterInfo cloudRegion2VimRegisterInfo(CloudRegionDetail cloudRegion) {
+  public VimRegisterInfo cloudRegion2VimRegisterInfo(CloudRegionDetail cloudRegion) {
     VimRegisterInfo vimRegisterInfo = new VimRegisterInfo();
     VimAuthInfo vimAuthInfo = new VimAuthInfo();
     ArrayList<VimAuthInfo> vimAuthInfos = new ArrayList<VimAuthInfo>();
diff --git a/esr-mgr/src/main/java/org/onap/aai/esr/util/VnfmManagerUtil.java b/esr-mgr/src/main/java/org/onap/aai/esr/util/VnfmManagerUtil.java
index 57b754b..ca6babd 100644
--- a/esr-mgr/src/main/java/org/onap/aai/esr/util/VnfmManagerUtil.java
+++ b/esr-mgr/src/main/java/org/onap/aai/esr/util/VnfmManagerUtil.java
@@ -23,7 +23,7 @@ import org.onap.aai.esr.entity.rest.VnfmRegisterInfo;
 
 public class VnfmManagerUtil {
   
-  public static EsrVnfmDetail vnfmRegisterInfo2EsrVnfm(VnfmRegisterInfo vnfmRegisterInfo) {
+  public EsrVnfmDetail vnfmRegisterInfo2EsrVnfm(VnfmRegisterInfo vnfmRegisterInfo) {
     EsrVnfmDetail esrVnfm = new EsrVnfmDetail();
     EsrSystemInfoList esrSystemInfo = new EsrSystemInfoList();
     EsrSystemInfo authInfo = new EsrSystemInfo();
@@ -41,7 +41,7 @@ public class VnfmManagerUtil {
    * @param vnfmRegisterInfo vnfm register informantion from portal
    * @return
    */
-  private static EsrSystemInfo getAuthInfoFromVnfmRegisterInfo(VnfmRegisterInfo vnfmRegisterInfo) {
+  private EsrSystemInfo getAuthInfoFromVnfmRegisterInfo(VnfmRegisterInfo vnfmRegisterInfo) {
     EsrSystemInfo authInfo = new EsrSystemInfo();
     authInfo.setEsrSystemInfoId(ExtsysUtil.generateId());
     authInfo.setSystemName(vnfmRegisterInfo.getName());
@@ -55,7 +55,7 @@ public class VnfmManagerUtil {
     return authInfo;
   }
   
-  public static VnfmRegisterInfo esrVnfm2VnfmRegisterInfo(EsrVnfmDetail esrVnfm) {
+  public VnfmRegisterInfo esrVnfm2VnfmRegisterInfo(EsrVnfmDetail esrVnfm) {
     VnfmRegisterInfo vnfmRegisterInfo = new VnfmRegisterInfo();
     EsrSystemInfo authInfo = new EsrSystemInfo();
     vnfmRegisterInfo.setVnfmId(esrVnfm.getVnfmId());
diff --git a/esr-mgr/src/main/java/org/onap/aai/esr/wrapper/EmsManagerWrapper.java b/esr-mgr/src/main/java/org/onap/aai/esr/wrapper/EmsManagerWrapper.java
index 36f7963..e6e0f69 100644
--- a/esr-mgr/src/main/java/org/onap/aai/esr/wrapper/EmsManagerWrapper.java
+++ b/esr-mgr/src/main/java/org/onap/aai/esr/wrapper/EmsManagerWrapper.java
@@ -34,6 +34,7 @@ import com.google.gson.Gson;
 public class EmsManagerWrapper {
   private static EmsManagerWrapper emsManagerWrapper;
   private static final Logger LOG = LoggerFactory.getLogger(EmsManagerWrapper.class);
+  private static EmsManagerUtil emsManagerUtil = new EmsManagerUtil();
 
   /**
    * get VnfmManagerWrapper instance.
@@ -49,7 +50,7 @@ public class EmsManagerWrapper {
   public Response registerEms(EmsRegisterInfo emsRegisterInfo) {
     CommonRegisterResponse result = new CommonRegisterResponse();
     EsrEmsDetail esrEmsDetail = new EsrEmsDetail();
-    esrEmsDetail = EmsManagerUtil.emsRegisterInfo2EsrEms(emsRegisterInfo);
+    esrEmsDetail = emsManagerUtil.emsRegisterInfo2EsrEms(emsRegisterInfo);
     String emsId = esrEmsDetail.getEmsId();
     try {
       ExternalSystemProxy.registerEms(emsId, esrEmsDetail);
@@ -130,7 +131,7 @@ public class EmsManagerWrapper {
       String esrEmsStr = ExternalSystemProxy.queryEmsDetail(emsId);
       LOG.info("Response from AAI by query EMS: " + esrEmsStr);
       esrEmsDetail = new Gson().fromJson(esrEmsStr, EsrEmsDetail.class);
-      emsRegisterInfo = EmsManagerUtil.EsrEms2EmsRegisterInfo(esrEmsDetail);
+      emsRegisterInfo = emsManagerUtil.EsrEms2EmsRegisterInfo(esrEmsDetail);
       return emsRegisterInfo;
     } catch (Exception e) {
       e.printStackTrace();
@@ -174,7 +175,7 @@ public class EmsManagerWrapper {
     EsrSystemInfo originalEsrSystemInfo = new EsrSystemInfo();
     
     oriEsrEmsDetail = queryEsrEmsDetail(emsId);
-    esrEmsDetail = EmsManagerUtil.emsRegisterInfo2EsrEms(emsRegisterInfo);
+    esrEmsDetail = emsManagerUtil.emsRegisterInfo2EsrEms(emsRegisterInfo);
     String emsResourceVersion = oriEsrEmsDetail.getResourceVersion();
     esrEmsDetail.setResourceVersion(emsResourceVersion);
     esrEmsDetail.setEmsId(emsId);
diff --git a/esr-mgr/src/main/java/org/onap/aai/esr/wrapper/ThirdpatySdncWrapper.java b/esr-mgr/src/main/java/org/onap/aai/esr/wrapper/ThirdpatySdncWrapper.java
index 4ecc5c9..0dfd45a 100644
--- a/esr-mgr/src/main/java/org/onap/aai/esr/wrapper/ThirdpatySdncWrapper.java
+++ b/esr-mgr/src/main/java/org/onap/aai/esr/wrapper/ThirdpatySdncWrapper.java
@@ -37,6 +37,7 @@ public class ThirdpatySdncWrapper {
 
   private static ThirdpatySdncWrapper thirdpatySdncWrapper;
   private static final Logger LOG = LoggerFactory.getLogger(ThirdpatySdncWrapper.class);
+  private static ThirdpartySdncManagerUtil thirdpartySdncManagerUtil = new ThirdpartySdncManagerUtil();
 
   /**
    * get ThirdpatySdncWrapper instance.
@@ -52,7 +53,7 @@ public class ThirdpatySdncWrapper {
   public Response registerThirdpartySdnc(ThirdpartySdncRegisterInfo thirdpartySdnc) {
     CommonRegisterResponse result = new CommonRegisterResponse();
     EsrThirdpartySdncDetail esrSdncDetail = new EsrThirdpartySdncDetail();
-    esrSdncDetail = ThirdpartySdncManagerUtil.sdncRegisterInfo2EsrSdnc(thirdpartySdnc);
+    esrSdncDetail = thirdpartySdncManagerUtil.sdncRegisterInfo2EsrSdnc(thirdpartySdnc);
     String sdncId = esrSdncDetail.getThirdpartySdncId();
     try {
       ExternalSystemProxy.registerSdnc(sdncId, esrSdncDetail);
@@ -72,7 +73,7 @@ public class ThirdpatySdncWrapper {
     EsrThirdpartySdncDetail originalEsrSdncDetail = new EsrThirdpartySdncDetail();
     EsrSystemInfo originalEsrSystemInfo = new EsrSystemInfo();
     originalEsrSdncDetail = queryEsrThirdpartySdncDetail(sdncId);
-    esrSdncDetail = ThirdpartySdncManagerUtil.sdncRegisterInfo2EsrSdnc(thirdpartySdnc);
+    esrSdncDetail = thirdpartySdncManagerUtil.sdncRegisterInfo2EsrSdnc(thirdpartySdnc);
     String resourceVersion = originalEsrSdncDetail.getResourceVersion();
     esrSdncDetail.setResourceVersion(resourceVersion);
     esrSdncDetail.setThirdpartySdncId(sdncId);
@@ -145,7 +146,7 @@ public class ThirdpatySdncWrapper {
       String esrSdncStr = ExternalSystemProxy.queryThirdpartySdncDetail(sdncId);
       LOG.info("Response from AAI by query thirdparty SDNC: " + esrSdncStr);
       esrSdncDetail = new Gson().fromJson(esrSdncStr, EsrThirdpartySdncDetail.class);
-      sdncRegisterInfo = ThirdpartySdncManagerUtil.esrSdnc2SdncRegisterInfo(esrSdncDetail);
+      sdncRegisterInfo = thirdpartySdncManagerUtil.esrSdnc2SdncRegisterInfo(esrSdncDetail);
       return sdncRegisterInfo;
     } catch (Exception e) {
       e.printStackTrace();
diff --git a/esr-mgr/src/main/java/org/onap/aai/esr/wrapper/VimManagerWrapper.java b/esr-mgr/src/main/java/org/onap/aai/esr/wrapper/VimManagerWrapper.java
index ec52317..6d06a1c 100644
--- a/esr-mgr/src/main/java/org/onap/aai/esr/wrapper/VimManagerWrapper.java
+++ b/esr-mgr/src/main/java/org/onap/aai/esr/wrapper/VimManagerWrapper.java
@@ -37,6 +37,7 @@ public class VimManagerWrapper {
 
   private static VimManagerWrapper vimManagerWrapper;
   private static final Logger LOG = LoggerFactory.getLogger(VimManagerWrapper.class);
+  private static VimManagerUtil vimManagerUtil = new VimManagerUtil();
 
   /**
    * get VimManagerWrapper instance.
@@ -56,7 +57,7 @@ public class VimManagerWrapper {
         "Start register VIM, input VIM info is: " + ExtsysUtil.objectToString(vimRegisterInfo));
     CloudRegionDetail cloudRegion = new CloudRegionDetail();
     VimRegisterResponse result = new VimRegisterResponse();
-    cloudRegion = VimManagerUtil.vimRegisterInfo2CloudRegion(vimRegisterInfo);
+    cloudRegion = vimManagerUtil.vimRegisterInfo2CloudRegion(vimRegisterInfo);
     String cloudOwner = vimRegisterInfo.getCloudOwner();
     String cloudRegionId = vimRegisterInfo.getCloudRegionId();
     try {
@@ -112,7 +113,7 @@ public class VimManagerWrapper {
       String cloudRegionstr = CloudRegionProxy.queryVimDetail(cloudOwner, cloudRegionId);
       LOG.info("Response from AAI by query VIM: " + cloudRegionstr);
       cloudRegionDetail = new Gson().fromJson(cloudRegionstr, CloudRegionDetail.class);
-      vim = VimManagerUtil.cloudRegion2VimRegisterInfo(cloudRegionDetail);
+      vim = vimManagerUtil.cloudRegion2VimRegisterInfo(cloudRegionDetail);
       return Response.ok(vim).build();
     } catch (Exception e) {
       e.printStackTrace();
@@ -140,7 +141,7 @@ public class VimManagerWrapper {
     try {
       String cloudRegionstr = CloudRegionProxy.queryVimDetail(cloudOwner, cloudRegionId);
       cloudRegionDetail = new Gson().fromJson(cloudRegionstr, CloudRegionDetail.class);
-      registeredVimInfo = VimManagerUtil.cloudRegion2VimRegisterInfo(cloudRegionDetail);
+      registeredVimInfo = vimManagerUtil.cloudRegion2VimRegisterInfo(cloudRegionDetail);
     } catch (Exception error) {
       error.printStackTrace();
       LOG.error("query VIM detail failed ! cloud-owner = " + cloudOwner + ", cloud-region-id = "
@@ -171,7 +172,7 @@ public class VimManagerWrapper {
     String cloudRegionId = vimRegisterInfo.getCloudRegionId();
     originalCloudRegionDetail = getOriginalCloudRegion(cloudOwner, cloudRegionId);
     String resourceVersion = originalCloudRegionDetail.getResourceVersion();
-    cloudRegionDetail = VimManagerUtil.vimRegisterInfo2CloudRegion(vimRegisterInfo);
+    cloudRegionDetail = vimManagerUtil.vimRegisterInfo2CloudRegion(vimRegisterInfo);
     if(resourceVersion != null) {
       cloudRegionDetail.setResourceVersion(resourceVersion);
       originalSystemInfo = originalCloudRegionDetail.getEsrSystemInfoList().getEsrSystemInfo().get(0);
diff --git a/esr-mgr/src/main/java/org/onap/aai/esr/wrapper/VnfmManagerWrapper.java b/esr-mgr/src/main/java/org/onap/aai/esr/wrapper/VnfmManagerWrapper.java
index 5f6c8db..a0ca60d 100644
--- a/esr-mgr/src/main/java/org/onap/aai/esr/wrapper/VnfmManagerWrapper.java
+++ b/esr-mgr/src/main/java/org/onap/aai/esr/wrapper/VnfmManagerWrapper.java
@@ -35,6 +35,8 @@ public class VnfmManagerWrapper {
   private static VnfmManagerWrapper vnfmManagerWrapper;
   private static final Logger LOG = LoggerFactory.getLogger(VnfmManagerWrapper.class);
 
+  private static VnfmManagerUtil vnfmManagerUtil = new VnfmManagerUtil();
+  
   /**
    * get VnfmManagerWrapper instance.
    * 
@@ -50,7 +52,7 @@ public class VnfmManagerWrapper {
   public Response registerVnfm(VnfmRegisterInfo vnfm) {
     CommonRegisterResponse result = new CommonRegisterResponse();
     EsrVnfmDetail esrVnfmDetail = new EsrVnfmDetail();
-    esrVnfmDetail = VnfmManagerUtil.vnfmRegisterInfo2EsrVnfm(vnfm);
+    esrVnfmDetail = vnfmManagerUtil.vnfmRegisterInfo2EsrVnfm(vnfm);
     String vnfmId = esrVnfmDetail.getVnfmId();
     try {
       ExternalSystemProxy.registerVnfm(vnfmId, esrVnfmDetail);
@@ -69,7 +71,7 @@ public class VnfmManagerWrapper {
     EsrVnfmDetail originalEsrVnfmDetail = new EsrVnfmDetail();
     EsrSystemInfo originalEsrSystemInfo = new EsrSystemInfo();
     originalEsrVnfmDetail = queryEsrVnfmDetail(vnfmId);
-    esrVnfmDetail = VnfmManagerUtil.vnfmRegisterInfo2EsrVnfm(vnfm);
+    esrVnfmDetail = vnfmManagerUtil.vnfmRegisterInfo2EsrVnfm(vnfm);
     String resourceVersion = getResourceVersion(vnfmId);
     esrVnfmDetail.setResourceVersion(resourceVersion);
     esrVnfmDetail.setVnfmId(vnfmId);
@@ -140,7 +142,7 @@ public class VnfmManagerWrapper {
       String esrVnfmstr = ExternalSystemProxy.queryVnfmDetail(vnfmId);
       LOG.info("Response from AAI by query VNFM: " + esrVnfmstr);
       esrVnfmDetail = new Gson().fromJson(esrVnfmstr, EsrVnfmDetail.class);
-      vnfm = VnfmManagerUtil.esrVnfm2VnfmRegisterInfo(esrVnfmDetail);
+      vnfm = vnfmManagerUtil.esrVnfm2VnfmRegisterInfo(esrVnfmDetail);
       return vnfm;
     } catch (Exception e) {
       e.printStackTrace();