Initial OpenECOMP Portal commit
[portal.git] / ecomp-portal-BE / src / main / java / org / openecomp / portalapp / portal / service / ApplicationsRestClientServiceImpl.java
diff --git a/ecomp-portal-BE/src/main/java/org/openecomp/portalapp/portal/service/ApplicationsRestClientServiceImpl.java b/ecomp-portal-BE/src/main/java/org/openecomp/portalapp/portal/service/ApplicationsRestClientServiceImpl.java
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+/*-
+ * ================================================================================
+ * eCOMP Portal
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property
+ * ================================================================================
+ * 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.openecomp.portalapp.portal.service;
+
+import static com.att.eelf.configuration.Configuration.MDC_KEY_REQUEST_ID;
+
+import java.lang.reflect.Type;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.Date;
+
+import javax.annotation.PostConstruct;
+import javax.servlet.http.HttpServletResponse;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+
+import org.apache.cxf.jaxrs.client.WebClient;
+import org.apache.cxf.transport.http.HTTPException;
+import org.openecomp.portalapp.portal.domain.EPApp;
+import org.openecomp.portalapp.portal.logging.aop.EPAuditLog;
+import org.openecomp.portalapp.portal.logging.aop.EPMetricsLog;
+import org.openecomp.portalapp.portal.logging.format.EPAppMessagesEnum;
+import org.openecomp.portalapp.portal.logging.logic.EPLogUtil;
+import org.openecomp.portalapp.portal.utils.EPSystemProperties;
+import org.openecomp.portalapp.portal.utils.EcompPortalUtils;
+import org.openecomp.portalsdk.core.logging.logic.EELFLoggerDelegate;
+import org.openecomp.portalsdk.core.util.CipherUtil;
+import org.openecomp.portalsdk.core.util.SystemProperties;
+import org.slf4j.MDC;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.EnableAspectJAutoProxy;
+import org.springframework.stereotype.Service;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonParseException;
+
+@Service("applicationsRestClientService")
+@org.springframework.context.annotation.Configuration
+@EnableAspectJAutoProxy
+@EPAuditLog
+public class ApplicationsRestClientServiceImpl implements ApplicationsRestClientService{
+       
+       private static final String PASSWORD_HEADER = "password";
+
+       private static final String APP_USERNAME_HEADER = "username";
+
+       private static EELFLoggerDelegate logger = EELFLoggerDelegate.getLogger(ApplicationsRestClientServiceImpl.class);
+       
+       @Autowired
+       private AppsCacheService appsCacheService;
+       Gson gson = null;
+       
+       @PostConstruct
+       private void init(){
+               logger.debug(EELFLoggerDelegate.debugLogger, "initializing");
+               GsonBuilder builder = new GsonBuilder(); 
+
+               // Register an adapter to manage the date types as long values 
+               builder.registerTypeAdapter(Date.class, new JsonDeserializer<Date>() { 
+                  public Date deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
+                     return new Date(json.getAsJsonPrimitive().getAsLong()); 
+                  } 
+               });
+
+               gson = builder.create();        
+       }
+       
+       // TODO: do we need to do additional logging for remote API calls?
+       private static WebClient createClientForPath(String baseUri, String path) {
+               logger.info(EELFLoggerDelegate.debugLogger, "Creating web client for " + baseUri + "   +   " + path); 
+               WebClient client = WebClient.create(baseUri);
+               client.type(MediaType.APPLICATION_JSON).accept(MediaType.APPLICATION_JSON);
+               client.path(path);
+               return client;
+       }
+
+       @EPMetricsLog
+       private void verifyResponse(Response response) throws HTTPException {
+               int status = response.getStatus();
+               logger.debug(EELFLoggerDelegate.debugLogger, "http response status=" + status);
+               MDC.put(EPSystemProperties.EXTERNAL_API_RESPONSE_CODE, Integer.toString(status));
+               if (!isHttpSuccess(status)) {
+                       String errMsg = "Failed. Status=" + status + "; [" + response.getStatusInfo().getReasonPhrase().toString() + "]";
+                       URL url = null;
+                       try {
+                               // must not be null to avoid NPE in HTTPException constructor
+                               url = new URL("http://null");
+                               if (response.getLocation() != null)
+                                       url = response.getLocation().toURL();
+                       } catch (MalformedURLException e) {
+                               // never mind. it is only for the debug message.
+                               logger.warn(EELFLoggerDelegate.errorLogger, "Failed to build URL", e);
+                       }
+                       logger.error(EELFLoggerDelegate.errorLogger, "http response failed. " + errMsg + "; url=" + url);
+                       EPLogUtil.logEcompError(EPAppMessagesEnum.BeIncorrectHttpStatusError);
+                       throw new HTTPException(status, errMsg, url);
+               }
+       }
+       
+       private static boolean isHttpSuccess(int status){
+               return status / 100 == 2;
+       }
+
+       @EPMetricsLog
+       private WebClient createClientForApp(long appId, String restPath) {
+               logger.debug(EELFLoggerDelegate.debugLogger, "creating client for appId=" + appId + "; restPath=" + restPath); 
+               EPApp externalApp = appsCacheService.getApp(appId);
+               if(externalApp != null){
+                       String appBaseUri = externalApp.getAppRestEndpoint();
+                       String username = externalApp.getUsername();                    
+                       String encriptedPwd = externalApp.getAppPassword();
+                       String decreptedAppPwd = "";
+                       
+                       //Set local context
+                       MDC.put(EPSystemProperties.PROTOCOL, EPSystemProperties.HTTP);
+                       if (appBaseUri!=null && appBaseUri.contains("https")) {
+                               MDC.put(EPSystemProperties.PROTOCOL, EPSystemProperties.HTTPS);
+                       }
+                       MDC.put(EPSystemProperties.FULL_URL, appBaseUri + restPath);
+                       MDC.put(EPSystemProperties.TARGET_ENTITY, externalApp.getName());
+                       MDC.put(EPSystemProperties.TARGET_SERVICE_NAME, restPath);
+                       
+                       try {
+                               decreptedAppPwd = CipherUtil.decrypt(encriptedPwd, SystemProperties.getProperty(SystemProperties.Decryption_Key));
+                       } catch (Exception e) {                         
+                               logger.error(EELFLoggerDelegate.errorLogger, "Unable to decrypt App name = " + externalApp, EcompPortalUtils.getStackTrace(e));
+                               logger.error(EELFLoggerDelegate.errorLogger, "Unable to decrypt App name = " + externalApp, EcompPortalUtils.getStackTrace(e));
+                       }
+                       logger.debug(EELFLoggerDelegate.debugLogger, String.format("App %d found, baseUri=[%s], Headers: [%s=%s, %s=%s]", appId, appBaseUri, APP_USERNAME_HEADER, username, PASSWORD_HEADER, encriptedPwd));
+                       WebClient client = createClientForPath(appBaseUri, restPath);
+                       client.header(APP_USERNAME_HEADER, username);
+                       client.header(PASSWORD_HEADER, decreptedAppPwd);
+                       client.header(SystemProperties.ECOMP_REQUEST_ID, MDC.get(MDC_KEY_REQUEST_ID));
+                       client.header(SystemProperties.USERAGENT_NAME, EPSystemProperties.ECOMP_PORTAL_BE);
+                       
+                       return client;
+               }
+               return null;
+       }
+       
+       @Override
+       public <T> T get(Class<T> clazz, long appId, String restPath) throws HTTPException {
+               
+               WebClient webClient = null;
+               Response response = null;
+               T t = null;
+               
+               webClient = createClientForApp(appId, restPath);
+               EcompPortalUtils.logAndSerializeObject(restPath, "GET request =", "no-payload");
+                                               
+               try {
+                       if (webClient!=null) {
+                               response = webClient.get();
+                       } else {
+                               logger.error(EELFLoggerDelegate.errorLogger, "Unable to create the Webclient to make the '" + restPath + "' API call.");
+                       }
+               } catch (Exception e) {
+                       MDC.put(EPSystemProperties.EXTERNAL_API_RESPONSE_CODE, Integer.toString(HttpServletResponse.SC_INTERNAL_SERVER_ERROR));
+                       EPLogUtil.logEcompError(EPAppMessagesEnum.BeRestApiGeneralError);
+                       logger.error(EELFLoggerDelegate.errorLogger, "Exception occurred while making the GET REST API call, Details: " + EcompPortalUtils.getStackTrace(e));
+               }
+               
+               if (response!=null) {
+                       verifyResponse(response);
+                       String str = response.readEntity(String.class);
+                       EcompPortalUtils.logAndSerializeObject(restPath, "GET result =", str);
+                   try { t = gson.fromJson(str, clazz); } catch(Exception e) {
+                       logger.error(EELFLoggerDelegate.errorLogger, EcompPortalUtils.getStackTrace(e));
+                       EPLogUtil.logEcompError(EPAppMessagesEnum.BeInvalidJsonInput); 
+                       }
+               }
+               
+               return t;
+       }
+
+       @Override
+       public <T> T post(Class<T> clazz, long appId, Object payload, String restPath) throws HTTPException {
+               WebClient client = null;
+               Response response = null;
+               T t = null;
+               
+               client = createClientForApp(appId, restPath);
+               EcompPortalUtils.logAndSerializeObject(restPath, "POST request =", payload);
+               
+               
+               try {
+                       if (client!=null) {
+                               response = client.post(payload);
+                       } else {
+                               logger.error(EELFLoggerDelegate.errorLogger, "Unable to create the Webclient to make the '" + restPath + "' API call.");
+                       }
+               } catch (Exception e) {
+                       MDC.put(EPSystemProperties.EXTERNAL_API_RESPONSE_CODE, Integer.toString(HttpServletResponse.SC_INTERNAL_SERVER_ERROR));
+                       EPLogUtil.logEcompError(EPAppMessagesEnum.BeRestApiGeneralError);
+                       logger.error(EELFLoggerDelegate.errorLogger, "Exception occurred while making the POST REST API call, Details: " + EcompPortalUtils.getStackTrace(e));
+               }
+               
+               if (response!=null) {
+                       verifyResponse(response);
+                       
+                       //String contentType = response.getHeaderString("Content-Type");
+                       if(clazz != null) {
+                               String str = response.readEntity(String.class);
+                               EcompPortalUtils.logAndSerializeObject(restPath, "POST result =", str);
+                               try { t = gson.fromJson(str, clazz); } catch (Exception e) {
+                                       logger.error(EELFLoggerDelegate.errorLogger, EcompPortalUtils.getStackTrace(e));
+                                       EPLogUtil.logEcompError(EPAppMessagesEnum.BeInvalidJsonInput);
+                                       }
+                       }
+               }
+               return t;
+       }
+
+       @Override
+       public <T> T put(Class<T> clazz, long appId, Object payload, String restPath)  throws HTTPException {
+               WebClient client = null;
+               Response response = null;
+               T t = null;
+               
+               client = createClientForApp(appId, restPath);
+               EcompPortalUtils.logAndSerializeObject(restPath, "PUT request =", payload);
+               
+               try {
+                       if (client!=null) {
+                               response = client.put(payload);
+                       } else {
+                               logger.error(EELFLoggerDelegate.errorLogger, "Unable to create the Webclient to make the '" + restPath + "' API call.");
+                       }
+               } catch(Exception e) {
+                       MDC.put(EPSystemProperties.EXTERNAL_API_RESPONSE_CODE, Integer.toString(HttpServletResponse.SC_INTERNAL_SERVER_ERROR));
+                       EPLogUtil.logEcompError(EPAppMessagesEnum.BeRestApiGeneralError);
+                       logger.error(EELFLoggerDelegate.errorLogger, "Exception occurred while making the PUT REST API call, Details: " + EcompPortalUtils.getStackTrace(e));
+               }
+               
+               if (response!=null) {
+                       verifyResponse(response);
+                       String str = response.readEntity(String.class);
+                       EcompPortalUtils.logAndSerializeObject(restPath, "PUT result =", str);
+                       try { t = gson.fromJson(str, clazz); } catch (Exception e) {
+                               logger.error(EELFLoggerDelegate.errorLogger, EcompPortalUtils.getStackTrace(e));
+                               EPLogUtil.logEcompError(EPAppMessagesEnum.BeInvalidJsonInput);
+                               }
+               }
+               return t;
+       }
+}