Java tutorial
/* (c) 2016 Open Source Geospatial Foundation - all rights reserved * This code is licensed under the GPL 2.0 license, available at the root * application directory. */ package org.geogig.geoserver.web.repository; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Map.Entry; import java.util.Set; import javax.annotation.Nullable; import org.apache.wicket.Component; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.ajax.markup.html.AjaxLink; import org.apache.wicket.ajax.markup.html.form.AjaxSubmitLink; import org.apache.wicket.extensions.ajax.markup.html.modal.ModalWindow; import org.apache.wicket.markup.html.form.Form; import org.apache.wicket.markup.html.panel.FeedbackPanel; import org.apache.wicket.markup.html.panel.Panel; import org.apache.wicket.model.IModel; import org.apache.wicket.model.Model; import org.apache.wicket.model.ResourceModel; import org.geogig.geoserver.config.RepositoryInfo; import org.geogig.geoserver.config.RepositoryManager; import org.locationtech.geogig.plumbing.TransactionBegin; import org.locationtech.geogig.porcelain.ConfigOp; import org.locationtech.geogig.porcelain.ConfigOp.ConfigAction; import org.locationtech.geogig.porcelain.ConfigOp.ConfigScope; import org.locationtech.geogig.porcelain.RemoteAddOp; import org.locationtech.geogig.porcelain.RemoteListOp; import org.locationtech.geogig.porcelain.RemoteRemoveOp; import org.locationtech.geogig.repository.Context; import org.locationtech.geogig.repository.IndexInfo; import org.locationtech.geogig.repository.Remote; import org.locationtech.geogig.repository.Repository; import org.locationtech.geogig.repository.impl.GeogigTransaction; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.google.common.base.Function; import com.google.common.base.Optional; import com.google.common.base.Preconditions; import com.google.common.collect.ImmutableList; import com.google.common.collect.Lists; import com.google.common.collect.Maps; import com.google.common.collect.Sets; /** */ public abstract class RepositoryEditFormPanel extends Panel { private static final long serialVersionUID = -9001389048321749075L; private static final Logger LOGGER = LoggerFactory.getLogger(RepositoryEditFormPanel.class); private RemotesListPanel remotes; private ConfigListPanel localConfig; private ConfigListPanel globalConfig; private IndexListPanel indexes; private ModalWindow popupWindow; private Form<RepositoryInfo> form; private boolean isNew = false; public RepositoryEditFormPanel(final String id) { this(id, null); } public RepositoryEditFormPanel(final String id, @Nullable IModel<RepositoryInfo> repoInfo) { super(id); isNew = repoInfo == null; if (isNew) { repoInfo = new Model<>(new RepositoryInfo()); } setDefaultModel(repoInfo); popupWindow = new ModalWindow("popupWindow"); add(popupWindow); form = new Form<>("repoForm", repoInfo); form.add(new RepositoryEditPanel("repo", repoInfo, isNew)); form.add(addRemoteLink()); List<RemoteInfo> remoteInfos = loadRemoteInfos(repoInfo.getObject()); form.add(remotes = new RemotesListPanel("remotes", remoteInfos)); form.add(addConfigLink(false)); Map<String, String> localConfigMap = loadConfig(repoInfo.getObject(), false); form.add(localConfig = new ConfigListPanel("localConfig", localConfigMap)); form.add(addConfigLink(true)); Map<String, String> globalConfigMap = loadConfig(repoInfo.getObject(), true); form.add(globalConfig = new ConfigListPanel("globalConfig", globalConfigMap)); List<IndexInfo> indexInfos = loadIndexes(repoInfo.getObject()); form.add(indexes = new IndexListPanel("indexes", indexInfos)); add(form); FeedbackPanel feedback = new FeedbackPanel("feedback"); form.add(feedback); form.add(new AjaxLink<Void>("cancel") { private static final long serialVersionUID = 6220299771769708060L; @Override public void onClick(AjaxRequestTarget target) { cancelled(target); } }); form.add(new AjaxSubmitLink("save", form) { private static final long serialVersionUID = 1L; @Override protected void onError(AjaxRequestTarget target, Form<?> form) { super.onError(target, form); target.add(form); } @Override protected void onSubmit(AjaxRequestTarget target, Form<?> form) { try { RepositoryInfo repoInfo = (RepositoryInfo) form.getModelObject(); onSave(repoInfo, target); } catch (IllegalArgumentException e) { form.error(e.getMessage()); target.add(form); } } }); } private List<RemoteInfo> loadRemoteInfos(RepositoryInfo repo) { String repoId = repo.getId(); if (null == repoId) { return new ArrayList<>(); } ArrayList<RemoteInfo> list = new ArrayList<>(); Repository geogig; try { geogig = RepositoryManager.get().getRepository(repoId); if (geogig != null) { ImmutableList<Remote> geogigRemotes = geogig.command(RemoteListOp.class).call(); list = RemoteInfo.fromList(geogigRemotes); } } catch (Exception e) { LOGGER.warn("Failed to load Remotes for repository", e); } return list; } private Map<String, String> loadConfig(RepositoryInfo repo, boolean global) { String repoId = repo.getId(); if (null == repoId) { return Maps.newHashMap(); } Repository geogig; try { geogig = RepositoryManager.get().getRepository(repoId); if (geogig != null) { Optional<Map<String, String>> config = geogig.command(ConfigOp.class)// .setAction(ConfigAction.CONFIG_LIST)// .setScope(global ? ConfigScope.GLOBAL : ConfigScope.LOCAL)// .call(); if (config.isPresent()) { return config.get(); } } } catch (Exception e) { LOGGER.warn("Failed to load config for repository", e); } return Maps.newHashMap(); } private List<IndexInfo> loadIndexes(RepositoryInfo repo) { String repoId = repo.getId(); if (null == repoId) { return Lists.newArrayList(); } Repository geogig; try { geogig = RepositoryManager.get().getRepository(repoId); return geogig.indexDatabase().getIndexInfos(); } catch (Exception e) { LOGGER.warn("Failed to load indexes for repository", e); } return Lists.newArrayList(); } private Component addRemoteLink() { return new AjaxLink<Void>("addRemote") { private static final long serialVersionUID = 1L; @Override public void onClick(AjaxRequestTarget target) { RemoteInfo ri = new RemoteInfo(); IModel<RemoteInfo> model = new Model<>(ri); RemotesListPanel table = RepositoryEditFormPanel.this.remotes; RemoteEditPanel editPanel = new RemoteEditPanel(popupWindow.getContentId(), model, popupWindow, table); popupWindow.setContent(editPanel); popupWindow.setTitle(new ResourceModel("RemoteEditPanel.title")); popupWindow.show(target); } }; } private Component addConfigLink(boolean global) { return new AjaxLink<Void>(global ? "addGlobalConfig" : "addLocalConfig") { private static final long serialVersionUID = 1L; @Override public void onClick(AjaxRequestTarget target) { ConfigEntry config = new ConfigEntry(); IModel<ConfigEntry> model = new Model<>(config); ConfigListPanel table = global ? RepositoryEditFormPanel.this.globalConfig : RepositoryEditFormPanel.this.localConfig; ConfigEditPanel editPanel = new ConfigEditPanel(popupWindow.getContentId(), model, popupWindow, table); popupWindow.setContent(editPanel); popupWindow.setTitle(new ResourceModel("ConfigEditPanel.title")); popupWindow.show(target); } }; } private void onSave(RepositoryInfo repoInfo, AjaxRequestTarget target) { RepositoryManager manager = RepositoryManager.get(); // update remotes Repository geogig; try { repoInfo = manager.save(repoInfo); geogig = manager.getRepository(repoInfo.getId()); } catch (Exception e) { form.error("Unable to connect to repository " + repoInfo.getLocation() + "\n" + e.getMessage()); target.add(form); return; } Function<RemoteInfo, Integer> keyFunction = new Function<RemoteInfo, Integer>() { @Override public Integer apply(RemoteInfo r) { return r.getId(); } }; Map<Integer, RemoteInfo> currentRemotes = new HashMap<>( Maps.uniqueIndex(loadRemoteInfos(repoInfo), keyFunction)); Set<RemoteInfo> newRemotes = Sets.newHashSet(remotes.getRemotes()); if (!currentRemotes.isEmpty() || !newRemotes.isEmpty()) { GeogigTransaction tx = geogig.command(TransactionBegin.class).call(); try { updateRemotes(tx, currentRemotes, newRemotes); tx.commit(); } catch (Exception e) { try { tx.abort(); } finally { form.error(e.getMessage()); target.add(form); } return; } } Map<String, String> currentLocalConfig = loadConfig(repoInfo, false); updateConfig(geogig.context(), currentLocalConfig, Lists.newArrayList(localConfig.getConfigs()), false); Map<String, String> currentGlobalConfig = loadConfig(repoInfo, true); updateConfig(geogig.context(), currentGlobalConfig, Lists.newArrayList(globalConfig.getConfigs()), true); saved(repoInfo, target); } private void updateRemotes(Context geogig, Map<Integer, RemoteInfo> currentRemotes, Set<RemoteInfo> newRemotes) throws Exception { // handle deletes first, in case a remote was deleted in the table and then a new one added // with the same name { Map<Integer, RemoteInfo> remaining = new HashMap<>(); for (RemoteInfo ri : newRemotes) { if (ri.getId() != null) { remaining.put(ri.getId(), ri); } } for (RemoteInfo deleted : currentRemotes.values()) { if (!remaining.containsKey(deleted.getId())) { String name = deleted.getName(); try { geogig.command(RemoteRemoveOp.class).setName(name).call(); } catch (RuntimeException e) { throw new RuntimeException("Error deleting remote " + name, e); } } } } for (RemoteInfo ri : newRemotes) { if (ri.getId() == null) {// its a new one RemoteAddOp cmd = geogig.command(RemoteAddOp.class); cmd.setName(ri.getName()); cmd.setURL(ri.getURL()); cmd.setUserName(ri.getUserName()); cmd.setPassword(ri.getPassword()); try { cmd.call(); } catch (RuntimeException e) { throw new RuntimeException("Error adding remote " + ri.getName() + ": " + e.getMessage(), e); } } else { // handle upadtes RemoteInfo old = currentRemotes.remove(ri.getId()); Preconditions.checkNotNull(old); if (old.equals(ri)) { continue;// didn't change } try { geogig.command(RemoteRemoveOp.class).setName(old.getName()).call(); RemoteAddOp addop = geogig.command(RemoteAddOp.class); addop.setName(ri.getName()).setURL(ri.getURL()).setUserName(ri.getUserName()) .setPassword(ri.getPassword()); addop.call(); } catch (RuntimeException e) { throw new RuntimeException("Error updating remote " + ri.getName() + ": " + e.getMessage(), e); } } } } private void updateConfig(Context geogig, Map<String, String> currentConfig, List<ConfigEntry> newConfig, boolean global) { ConfigScope scope = global ? ConfigScope.GLOBAL : ConfigScope.LOCAL; for (ConfigEntry entry : newConfig) { if (currentConfig.containsKey(entry.getName())) { if (!currentConfig.get(entry.getName()).equals(entry.getValue())) { // entry changed geogig.command(ConfigOp.class)// .setAction(ConfigAction.CONFIG_SET)// .setName(entry.getName())// .setValue(entry.getValue())// .setScope(scope)// .call(); } currentConfig.remove(entry.getName()); } else { // new entry geogig.command(ConfigOp.class)// .setAction(ConfigAction.CONFIG_SET)// .setName(entry.getName())// .setValue(entry.getValue())// .setScope(scope)// .call(); } } if (!isNew) { for (Entry<String, String> entry : currentConfig.entrySet()) { // removed entry geogig.command(ConfigOp.class)// .setAction(ConfigAction.CONFIG_UNSET)// .setName(entry.getKey())// .setScope(scope)// .call(); } } } protected abstract void saved(RepositoryInfo info, AjaxRequestTarget target); protected abstract void cancelled(AjaxRequestTarget target); }