Java tutorial
/* * #%L * ACS AEM Commons Bundle * %% * Copyright (C) 2013 - 2014 Adobe * %% * 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. * #L% */ package com.adobe.acs.commons.replication.impl; import com.adobe.acs.commons.replication.ReplicateVersion; import com.adobe.acs.commons.replication.ReplicationResult; import com.google.gson.JsonArray; import com.google.gson.JsonObject; import org.apache.commons.lang.ArrayUtils; import org.apache.commons.lang.StringUtils; import org.apache.sling.api.SlingHttpServletRequest; import org.apache.sling.api.SlingHttpServletResponse; import org.apache.sling.api.servlets.SlingAllMethodsServlet; import org.osgi.service.component.annotations.Component; import org.osgi.service.component.annotations.Reference; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import javax.servlet.Servlet; import javax.servlet.ServletException; import javax.servlet.http.HttpServletResponse; import static org.apache.sling.api.servlets.ServletResolverConstants.SLING_SERVLET_EXTENSIONS; import static org.apache.sling.api.servlets.ServletResolverConstants.SLING_SERVLET_METHODS; import static org.apache.sling.api.servlets.ServletResolverConstants.SLING_SERVLET_RESOURCE_TYPES; import static org.apache.sling.api.servlets.ServletResolverConstants.SLING_SERVLET_SELECTORS; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Date; import java.util.List; /** * ACS AEM Commons - Replicate Version Servlet * Servlet end-point used to initiate replication of resource versions. */ @SuppressWarnings("serial") @Component(service = Servlet.class, property = { SLING_SERVLET_METHODS + "=POST", SLING_SERVLET_SELECTORS + "=replicateversion", SLING_SERVLET_EXTENSIONS + "=json", SLING_SERVLET_RESOURCE_TYPES + "=acs-commons/components/utilities/version-replicator" }) public class ReplicateVersionServlet extends SlingAllMethodsServlet { private static final Logger log = LoggerFactory.getLogger(ReplicateVersionServlet.class); private static final String KEY_ERROR = "error"; private static final String KEY_RESULT = "result"; private static final String KEY_STATUS = "status"; private static final String KEY_PATH = "path"; private static final String KEY_VERSION = "version"; @Reference private ReplicateVersion replicateVersion; @Override public final void doPost(SlingHttpServletRequest req, SlingHttpServletResponse res) throws ServletException, IOException { log.debug("Entering ReplicatePageVersionServlet.doPost(..)"); String[] rootPaths = req.getParameterValues("rootPaths"); Date date = getDate(req.getParameter("datetimecal")); String[] agents = req.getParameterValues("cmbAgent"); JsonObject obj = validate(rootPaths, agents, date); if (!obj.has(KEY_ERROR)) { log.debug("Initiating version replication"); List<ReplicationResult> response = replicateVersion.replicate(req.getResourceResolver(), rootPaths, agents, date); if (log.isDebugEnabled()) { for (final ReplicationResult replicationResult : response) { log.debug("Replication result: {} -- {}", replicationResult.getPath(), replicationResult.getStatus()); } } JsonArray arr = convertResponseToJson(response); obj = new JsonObject(); obj.add(KEY_RESULT, arr); } else { log.debug("Did not attempt to replicate version due to issue with input params"); res.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR); obj.addProperty(KEY_STATUS, KEY_ERROR); } res.setContentType("application/json"); res.getWriter().print(obj.toString()); } private JsonArray convertResponseToJson(List<ReplicationResult> list) { JsonArray arr = new JsonArray(); for (ReplicationResult result : list) { JsonObject resultObject = new JsonObject(); resultObject.addProperty(KEY_PATH, result.getPath()); resultObject.addProperty(KEY_STATUS, result.getStatus().name()); resultObject.addProperty(KEY_VERSION, result.getVersion()); arr.add(resultObject); } return arr; } private JsonObject validate(String[] rootPaths, String[] agents, Date date) { final JsonObject obj = new JsonObject(); if (ArrayUtils.isEmpty(rootPaths)) { obj.addProperty(KEY_ERROR, "Select at least 1 root path."); log.debug("Error validating root paths (they're empty)"); return obj; } for (final String rootPath : rootPaths) { if (StringUtils.isBlank(rootPath)) { obj.addProperty(KEY_ERROR, "Root paths cannot be empty."); log.debug("Error validating a root path"); return obj; } } if (date == null) { obj.addProperty(KEY_ERROR, "Specify the date and time to select the appropriate resource versions for replication."); log.debug("Error validating date"); return obj; } if (ArrayUtils.isEmpty(agents)) { obj.addProperty(KEY_ERROR, "Select at least 1 replication agent."); log.debug("Error validating agents"); return obj; } log.debug("Validated all version replication inputs successfully"); return obj; } private Date getDate(String datetime) { Date date = null; try { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'hh:mm:ss aa"); date = sdf.parse(datetime); } catch (Exception e) { log.error("exception occurred", e); } return date; } }