Java tutorial
/* Copyright (c) 2001 - 2013 TOPP - www.openplans.org. All rights reserved. * This code is licensed under the GPL 2.0 license, availible at the root * application directory. */ package it.geosolutions.geoserver.jms.impl.web; import it.geosolutions.geoserver.jms.JMSFactory; import it.geosolutions.geoserver.jms.client.JMSContainer; import it.geosolutions.geoserver.jms.configuration.BrokerConfiguration; import it.geosolutions.geoserver.jms.configuration.ConnectionConfiguration; import it.geosolutions.geoserver.jms.configuration.ConnectionConfiguration.ConnectionConfigurationStatus; import it.geosolutions.geoserver.jms.configuration.EmbeddedBrokerConfiguration; import it.geosolutions.geoserver.jms.configuration.JMSConfiguration; import it.geosolutions.geoserver.jms.configuration.ReadOnlyConfiguration; import it.geosolutions.geoserver.jms.configuration.ToggleConfiguration; import it.geosolutions.geoserver.jms.configuration.TopicConfiguration; import it.geosolutions.geoserver.jms.events.ToggleEvent; import it.geosolutions.geoserver.jms.events.ToggleType; import java.io.IOException; import java.util.Properties; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.ajax.markup.html.form.AjaxButton; import org.apache.wicket.markup.html.form.Button; import org.apache.wicket.markup.html.form.Form; import org.apache.wicket.markup.html.form.TextField; import org.apache.wicket.markup.html.panel.FeedbackPanel; import org.apache.wicket.model.CompoundPropertyModel; import org.apache.wicket.model.StringResourceModel; import org.geoserver.config.ReadOnlyGeoServerLoader; import org.geoserver.web.GeoServerSecuredPage; import org.geotools.util.logging.Logging; import org.springframework.context.ApplicationContext; public class ClusterPage extends GeoServerSecuredPage { private final static java.util.logging.Logger LOGGER = Logging.getLogger(ClusterPage.class); public ClusterPage() { final FeedbackPanel fp = getFeedbackPanel(); // setup the JMSContainer exception handler getJMSContainerExceptionHandler().setFeedbackPanel(fp); getJMSContainerExceptionHandler().setSession(fp.getSession()); fp.setOutputMarkupId(true); // form and submit final Form<Properties> form = new Form<Properties>("form", new CompoundPropertyModel<Properties>(getConfig().getConfigurations())); // add broker URL setting final TextField<String> brokerURL = new TextField<String>(BrokerConfiguration.BROKER_URL_KEY); // https://issues.apache.org/jira/browse/WICKET-2426 brokerURL.setType(String.class); form.add(brokerURL); // add group name setting final TextField<String> instanceName = new TextField<String>(JMSConfiguration.INSTANCE_NAME_KEY); // https://issues.apache.org/jira/browse/WICKET-2426 instanceName.setType(String.class); form.add(instanceName); // add instance name setting final TextField<String> group = new TextField<String>(JMSConfiguration.GROUP_KEY); // https://issues.apache.org/jira/browse/WICKET-2426 group.setType(String.class); form.add(group); // add topic name setting final TextField<String> topicName = new TextField<String>(TopicConfiguration.TOPIC_NAME_KEY); // https://issues.apache.org/jira/browse/WICKET-2426 topicName.setType(String.class); form.add(topicName); // add connection status info final TextField<String> connectionInfo = new TextField<String>(ConnectionConfiguration.CONNECTION_KEY); // https://issues.apache.org/jira/browse/WICKET-2426 connectionInfo.setType(String.class); connectionInfo.setOutputMarkupId(true); connectionInfo.setOutputMarkupPlaceholderTag(true); connectionInfo.setEnabled(false); form.add(connectionInfo); final AjaxButton connection = new AjaxButton("connectionB", new StringResourceModel(ConnectionConfiguration.CONNECTION_KEY, this, null)) { /** serialVersionUID */ private static final long serialVersionUID = 1L; @Override protected void onSubmit(AjaxRequestTarget target, org.apache.wicket.markup.html.form.Form<?> form) { // the container to use final JMSContainer c = getJMSContainer(); if (c.isRunning()) { fp.info("Disconnecting..."); if (c.disconnect()) { fp.info("Succesfully un-registered from the destination topic"); fp.warn("You will (probably) loose next incoming events from other instances!!! (depending on how you have configured the broker)"); connectionInfo.getModel().setObject(ConnectionConfigurationStatus.disabled.toString()); } else { fp.error("Disconnection error!"); connectionInfo.getModel().setObject(ConnectionConfigurationStatus.enabled.toString()); } } else { fp.info("Connecting..."); if (c.connect()) { fp.info("Now GeoServer is registered with the destination"); connectionInfo.getModel().setObject(ConnectionConfigurationStatus.enabled.toString()); } else { fp.error("Connection error!"); fp.error("Registration aborted due to a connection problem"); connectionInfo.getModel().setObject(ConnectionConfigurationStatus.disabled.toString()); } } target.addComponent(connectionInfo); target.addComponent(fp); } }; connection.setOutputMarkupId(true); connection.setOutputMarkupPlaceholderTag(true); form.add(connection); // add MASTER toggle addToggle(ToggleConfiguration.TOGGLE_MASTER_KEY, ToggleType.MASTER, ToggleConfiguration.TOGGLE_MASTER_KEY, "toggleMasterB", form, fp); // add SLAVE toggle addToggle(ToggleConfiguration.TOGGLE_SLAVE_KEY, ToggleType.SLAVE, ToggleConfiguration.TOGGLE_SLAVE_KEY, "toggleSlaveB", form, fp); // add Read Only switch final TextField<String> readOnlyInfo = new TextField<String>(ReadOnlyConfiguration.READ_ONLY_KEY); // https://issues.apache.org/jira/browse/WICKET-2426 readOnlyInfo.setType(String.class); readOnlyInfo.setOutputMarkupId(true); readOnlyInfo.setOutputMarkupPlaceholderTag(true); readOnlyInfo.setEnabled(false); form.add(readOnlyInfo); final AjaxButton readOnly = new AjaxButton("readOnlyB", new StringResourceModel(ReadOnlyConfiguration.READ_ONLY_KEY, this, null)) { /** serialVersionUID */ private static final long serialVersionUID = 1L; @Override protected void onSubmit(AjaxRequestTarget target, org.apache.wicket.markup.html.form.Form<?> form) { ReadOnlyGeoServerLoader loader = getReadOnlyGeoServerLoader(); if (loader.isEnabled()) { readOnlyInfo.getModel().setObject("disabled"); loader.enable(false); } else { readOnlyInfo.getModel().setObject("enabled"); loader.enable(true); } target.addComponent(this.getParent()); } }; form.add(readOnly); final Button save = new Button("saveB", new StringResourceModel("save", this, null)) { /** serialVersionUID */ private static final long serialVersionUID = 1L; @Override public void onSubmit() { try { getConfig().storeConfig(); fp.info("Configuration saved"); } catch (IOException e) { if (LOGGER.isLoggable(java.util.logging.Level.SEVERE)) LOGGER.severe(e.getLocalizedMessage()); fp.error(e.getLocalizedMessage()); } } }; form.add(save); // add Read Only switch final TextField<String> embeddedBrokerInfo = new TextField<String>( EmbeddedBrokerConfiguration.EMBEDDED_BROKER_KEY); // https://issues.apache.org/jira/browse/WICKET-2426 embeddedBrokerInfo.setType(String.class); embeddedBrokerInfo.setOutputMarkupId(true); embeddedBrokerInfo.setOutputMarkupPlaceholderTag(true); embeddedBrokerInfo.setEnabled(false); form.add(embeddedBrokerInfo); final AjaxButton embeddedBroker = new AjaxButton("embeddedBrokerB", new StringResourceModel(EmbeddedBrokerConfiguration.EMBEDDED_BROKER_KEY, this, null)) { /** serialVersionUID */ private static final long serialVersionUID = 1L; @Override protected void onSubmit(AjaxRequestTarget target, org.apache.wicket.markup.html.form.Form<?> form) { JMSFactory factory = getJMSFactory(); if (!factory.isEmbeddedBrokerStarted()) { try { if (factory.startEmbeddedBroker(getConfig().getConfigurations())) { embeddedBrokerInfo.getModel().setObject("enabled"); } } catch (Exception e) { if (LOGGER.isLoggable(java.util.logging.Level.SEVERE)) LOGGER.severe(e.getLocalizedMessage()); fp.error(e.getLocalizedMessage()); } } else { try { if (factory.stopEmbeddedBroker()) { embeddedBrokerInfo.getModel().setObject("disabled"); } } catch (Exception e) { if (LOGGER.isLoggable(java.util.logging.Level.SEVERE)) LOGGER.severe(e.getLocalizedMessage()); fp.error(e.getLocalizedMessage()); } } target.addComponent(this.getParent()); } }; form.add(embeddedBroker); // TODO change status if it is changed due to reset // final Button reset = new Button("resetB", new StringResourceModel("reset", this, null)) { // @Override // public void onSubmit() { // try { // getConfig().loadTempConfig(); // fp.info("Configuration reloaded"); // } catch (FileNotFoundException e) { // LOGGER.error(e.getLocalizedMessage(), e); // fp.error(e.getLocalizedMessage()); // } catch (IOException e) { // LOGGER.error(e.getLocalizedMessage(), e); // fp.error(e.getLocalizedMessage()); // } // } // }; // form.add(reset); // add the form add(form); // add the status monitor add(fp); } // final JMSConfiguration config, private void addToggle(final String configKey, final ToggleType type, final String textFieldId, final String buttonId, final Form<?> form, final FeedbackPanel fp) { final TextField<String> toggleInfo = new TextField<String>(textFieldId); // https://issues.apache.org/jira/browse/WICKET-2426 toggleInfo.setType(String.class); toggleInfo.setOutputMarkupId(true); toggleInfo.setOutputMarkupPlaceholderTag(true); toggleInfo.setEnabled(false); form.add(toggleInfo); final AjaxButton toggle = new AjaxButton(buttonId) { private static final long serialVersionUID = 1L; @Override protected void onError(AjaxRequestTarget target, org.apache.wicket.markup.html.form.Form<?> form) { fp.error("ERROR"); target.addComponent(fp); }; @Override protected void onSubmit(AjaxRequestTarget target, Form<?> form) { final boolean switchTo = !Boolean.parseBoolean(toggleInfo.getModel().getObject()); final ApplicationContext ctx = getGeoServerApplication().getApplicationContext(); ctx.publishEvent(new ToggleEvent(switchTo, type)); // getConfig().putConfiguration(configKey, // Boolean.toString(switchTo)); if (switchTo) { fp.info("The " + type + " toggle is now ENABLED"); } else { fp.warn("The " + type + " toggle is now DISABLED no event will be posted/received to/from the broker"); fp.info("Note that the " + type + " is still registered to the topic destination"); } toggleInfo.getModel().setObject(Boolean.toString(switchTo)); target.addComponent(toggleInfo); target.addComponent(fp); } }; toggle.setRenderBodyOnly(false); form.add(toggle); // add(new Monitor(Duration.seconds(10))); } protected JMSConfiguration getConfig() { return getGeoServerApplication().getBeanOfType(JMSConfiguration.class); } protected JMSContainer getJMSContainer() { return getGeoServerApplication().getBeanOfType(JMSContainer.class); } protected JMSFactory getJMSFactory() { return getGeoServerApplication().getBeanOfType(JMSFactory.class); } protected ReadOnlyGeoServerLoader getReadOnlyGeoServerLoader() { return getGeoServerApplication().getBeanOfType(ReadOnlyGeoServerLoader.class); } protected JMSContainerHandlerExceptionListenerImpl getJMSContainerExceptionHandler() { return getGeoServerApplication().getBeanOfType(JMSContainerHandlerExceptionListenerImpl.class); } }