Java tutorial
/* * Copyright (c) Bosch Software Innovations GmbH 2015. * Part of the SW360 Portal Project. * * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html */ package com.siemens.sw360.portal.portlets.projects; /** * Created by andreas.reichel@tngtech.com on 19.11.15. */ import com.fasterxml.jackson.core.JsonProcessingException; import com.liferay.portal.kernel.json.JSONArray; import com.liferay.portal.kernel.json.JSONFactoryUtil; import com.liferay.portal.kernel.json.JSONObject; import com.siemens.sw360.datahandler.thrift.RequestStatus; import com.siemens.sw360.datahandler.thrift.ThriftClients; import com.siemens.sw360.datahandler.thrift.projects.Project; import com.siemens.sw360.datahandler.thrift.bdpimport.BdpImportService; import com.siemens.sw360.datahandler.thrift.bdpimport.RemoteCredentials; import com.siemens.sw360.datahandler.thrift.importstatus.ImportStatus; import com.siemens.sw360.datahandler.thrift.users.User; import com.siemens.sw360.portal.common.PortalConstants; import com.siemens.sw360.portal.portlets.Sw360Portlet; import com.siemens.sw360.portal.users.UserCacheHolder; import org.apache.log4j.Logger; import org.apache.thrift.TException; import javax.portlet.*; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.io.PrintWriter; import java.util.ArrayList; import java.util.List; import static com.google.common.base.Strings.isNullOrEmpty; import static com.google.common.base.Strings.nullToEmpty; public class ProjectImportPortlet extends Sw360Portlet { private static final Logger log = Logger.getLogger(ProjectImportPortlet.class); private static BdpImportService.Iface bdpImportClient = new ThriftClients().makeBdpImportClient(); static class LoginState { private Boolean loggedIn; private String loggedInServerUrl; public LoginState() { loggedIn = false; loggedInServerUrl = ""; } public void login(String serverUrl) { loggedIn = true; loggedInServerUrl = serverUrl; } public void logout() { loggedIn = false; loggedInServerUrl = ""; } public String getServerUrl() { return loggedInServerUrl; } boolean isLoggedIn() { return loggedIn; } } private RemoteCredentials getRemoteCredentialsFromSession(PortletSession session) { String dbUserName = (String) session.getAttribute(PortalConstants.SESSION_IMPORT_USER); String dbUserPass = (String) session.getAttribute(PortalConstants.SESSION_IMPORT_PASS); String dbUrl = (String) session.getAttribute(PortalConstants.SESSION_IMPORT_URL); return new RemoteCredentials().setPassword(dbUserPass).setUsername(dbUserName).setServerUrl(dbUrl); } private void putRemoteCredentialsIntoSession(PortletSession session, RemoteCredentials remoteCredentials) { session.setAttribute(PortalConstants.SESSION_IMPORT_USER, nullToEmpty(remoteCredentials.getUsername())); session.setAttribute(PortalConstants.SESSION_IMPORT_PASS, nullToEmpty(remoteCredentials.getPassword())); session.setAttribute(PortalConstants.SESSION_IMPORT_URL, nullToEmpty(remoteCredentials.getServerUrl())); } @Override public void doView(RenderRequest request, RenderResponse response) throws IOException, PortletException { List<Project> importables = new ArrayList<>(); Boolean loggedIn = false; String loggedInServer = ""; RemoteCredentials reCred = getRemoteCredentialsFromSession(request.getPortletSession()); if (!nullToEmpty(reCred.getServerUrl()).isEmpty()) { importables = loadImportables(reCred); loggedIn = true; loggedInServer = reCred.getServerUrl(); } String idName = getIdName(); request.setAttribute("idName", idName); request.setAttribute("importables", importables); request.setAttribute("loggedIn", loggedIn); request.setAttribute("loggedInServer", loggedInServer); super.doView(request, response); } private List<String> getProjectIdsForImport(PortletRequest request) throws PortletException, IOException { String[] checked = request.getParameterValues("checked[]"); List<String> checkedIds = new ArrayList<>(); if (checked != null) { for (String s : checked) { checkedIds.add(s.substring(PortalConstants.CHECKED_PROJECT.length())); } } return checkedIds; } private boolean isImportSuccessful(ImportStatus importStatus) { return (importStatus.isSetRequestStatus() && importStatus.getRequestStatus().equals(RequestStatus.SUCCESS) && importStatus.getFailedIds().isEmpty()); } private ImportStatus importDatasources(List<String> toImport, User user, RemoteCredentials remoteCredentials) { ImportStatus importStatus = new ImportStatus(); try { importStatus = bdpImportClient.importDatasources(toImport, user, remoteCredentials); if (!isImportSuccessful(importStatus)) { if (importStatus.getRequestStatus().equals(RequestStatus.FAILURE)) { log.error("Importing of data sources failed."); } else { log.error("Importing has not succeeded for the following IDs: " + importStatus.getFailedIds().toString()); } } } catch (TException e) { log.error("ImportDatasources: Exception ".concat(e.getMessage())); } return importStatus; } private List<Project> loadImportables(RemoteCredentials remoteCredentials) { List<Project> importable; try { importable = bdpImportClient.loadImportables(remoteCredentials); } catch (TException e) { log.error("Thrift failed, (uncaught TException)", e); importable = new ArrayList<>(); } return importable; } private String getIdName() { try { return bdpImportClient.getIdName(); } catch (TException e) { log.error("Thrift failed, (uncaught TException)", e); return ""; } } @Override public void serveResource(ResourceRequest request, ResourceResponse response) throws IOException, PortletException { LoginState loginState = new LoginState(); String requestedAction = request.getParameter(PortalConstants.IMPORT_USER_ACTION); JSONObject responseData = handleRequestedAjaxAction(requestedAction, request, response, loginState); PrintWriter writer = response.getWriter(); writer.write(responseData.toString()); } public JSONObject handleRequestedAjaxAction(String requestedAction, ResourceRequest request, ResourceResponse response, LoginState loginState) throws IOException, PortletException { PortletSession session = request.getPortletSession(); RemoteCredentials remoteCredentials = getRemoteCredentialsFromSession(session); JSONObject responseData = JSONFactoryUtil.createJSONObject(); switch (requestedAction) { case PortalConstants.IMPORT_USER_ACTION__IMPORTBDP: User user = UserCacheHolder.getUserFromRequest(request); List<String> selectedIds = getProjectIdsForImport(request); importBdpProjects(user, selectedIds, responseData, remoteCredentials); break; case PortalConstants.IMPORT_USER_ACTION__NEWIMPORTSOURCE: RemoteCredentials newCredentials = new RemoteCredentials() .setUsername(request.getParameter(PortalConstants.SESSION_IMPORT_USER)) .setPassword(request.getParameter(PortalConstants.SESSION_IMPORT_PASS)) .setServerUrl(request.getParameter(PortalConstants.SESSION_IMPORT_URL)); if (!validateCredentials(newCredentials)) { responseData.put(PortalConstants.IMPORT_RESPONSE__STATUS, PortalConstants.IMPORT_RESPONSE__UNAUTHORIZED); } else { setNewImportSource(newCredentials, session, responseData, loginState); } break; case PortalConstants.IMPORT_USER_ACTION__UPDATEIMPORTABLES: updateImportables(responseData, loginState, remoteCredentials); break; case PortalConstants.IMPORT_USER_ACTION__DISCONNECT: putRemoteCredentialsIntoSession(session, new RemoteCredentials()); loginState.logout(); break; default: loginState.logout(); break; } return responseData; } private boolean validateCredentials(RemoteCredentials credentials) { try { return bdpImportClient.validateCredentials(credentials); } catch (TException e) { log.error("Thrift failed, (uncaught TException)", e); return false; } } private void importBdpProjects(User user, List<String> selectedIds, JSONObject responseData, RemoteCredentials remoteCredentials) throws PortletException, IOException { ImportStatus importStatus = importDatasources(selectedIds, user, remoteCredentials); JSONArray jsonFailedIds = JSONFactoryUtil.createJSONArray(); JSONArray jsonSuccessfulIds = JSONFactoryUtil.createJSONArray(); if (importStatus.isSetRequestStatus() && importStatus.getRequestStatus().equals(RequestStatus.SUCCESS)) { importStatus.getFailedIds().forEach(id -> jsonFailedIds.put(id)); importStatus.getSuccessfulIds().forEach(id -> jsonSuccessfulIds.put(id)); responseData.put(PortalConstants.IMPORT_RESPONSE__FAILED_IDS, jsonFailedIds); responseData.put(PortalConstants.IMPORT_RESPONSE__SUCCESSFUL_IDS, jsonSuccessfulIds); } if (isImportSuccessful(importStatus)) { responseData.put(PortalConstants.IMPORT_RESPONSE__STATUS, PortalConstants.IMPORT_RESPONSE__IMPORT_BDP_SUCCESS); } else if (importStatus.isSetRequestStatus() && importStatus.getRequestStatus().equals(RequestStatus.SUCCESS)) { responseData.put(PortalConstants.IMPORT_RESPONSE__STATUS, PortalConstants.IMPORT_RESPONSE__IMPORT_BDP_FAILURE); } else { responseData.put(PortalConstants.IMPORT_RESPONSE__STATUS, PortalConstants.IMPORT_RESPONSE__IMPORT_BDP_GENERAL_FAILURE); } } void setNewImportSource(RemoteCredentials newCredentials, PortletSession session, JSONObject responseData, LoginState loginState) { String serverUrl = nullToEmpty(newCredentials.getServerUrl()); if (serverUrl.isEmpty()) { loginState.logout(); responseData.put(PortalConstants.IMPORT_RESPONSE__STATUS, PortalConstants.IMPORT_RESPONSE__DB_URL_NOTSET); } else { putRemoteCredentialsIntoSession(session, newCredentials); responseData.put(PortalConstants.IMPORT_RESPONSE__STATUS, PortalConstants.IMPORT_RESPONSE__DB_CHANGED); responseData.put(PortalConstants.IMPORT_RESPONSE__DBURL, serverUrl); loginState.login(serverUrl); } } private void updateImportables(JSONObject responseData, LoginState loginState, RemoteCredentials remoteCredentials) throws JsonProcessingException { if (!nullToEmpty(remoteCredentials.getServerUrl()).isEmpty()) { List<Project> importables = loadImportables(remoteCredentials); JSONArray serializedProjects = JSONFactoryUtil.createJSONArray(); for (Project p : importables) { JSONObject jsonObject = JSONFactoryUtil.createJSONObject(); if (p.isSetExternalIds() && !isNullOrEmpty(p.getExternalIds().get(getIdName()))) jsonObject.put("externalId", p.getExternalIds().get(getIdName())); jsonObject.put("name", p.getName()); serializedProjects.put(jsonObject.toString()); } responseData.put(PortalConstants.IMPORT_RESPONSE__NEW_IMPORTABLES, serializedProjects); } responseData.put(PortalConstants.IMPORT_RESPONSE__DBURL, remoteCredentials.getServerUrl()); loginState.login(remoteCredentials.getServerUrl()); } }