| /* |
| * 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.apache.karaf.cellar.obr; |
| |
| import org.apache.karaf.cellar.core.Configurations; |
| import org.apache.karaf.cellar.core.control.BasicSwitch; |
| import org.apache.karaf.cellar.core.control.Switch; |
| import org.apache.karaf.cellar.core.control.SwitchStatus; |
| import org.apache.karaf.cellar.core.event.EventHandler; |
| import org.apache.karaf.cellar.core.event.EventType; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.service.cm.Configuration; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Handler for cluster OBR URL event. |
| */ |
| public class ObrUrlEventHandler extends ObrSupport implements EventHandler<ClusterObrUrlEvent> { |
| |
| private static final transient Logger LOGGER = LoggerFactory.getLogger(ObrUrlEventHandler.class); |
| |
| public static final String SWITCH_ID = "org.apache.karaf.cellar.event.obr.urls.handler"; |
| |
| private final Switch eventSwitch = new BasicSwitch(SWITCH_ID); |
| |
| @Override |
| public void init(BundleContext bundleContext) { |
| super.init(bundleContext); |
| } |
| |
| @Override |
| public void destroy() { |
| super.destroy(); |
| } |
| |
| /** |
| * Handle a received cluster OBR URL event. |
| * |
| * @param event the received cluster OBR URL event. |
| */ |
| @Override |
| public void handle(ClusterObrUrlEvent event) { |
| |
| // check if the handler is ON |
| if (this.getSwitch().getStatus().equals(SwitchStatus.OFF)) { |
| LOGGER.debug("CELLAR OBR: {} switch is OFF", SWITCH_ID); |
| return; |
| } |
| |
| if (groupManager == null) { |
| //in rare cases for example right after installation this happens! |
| LOGGER.error("CELLAR OBR: retrieved event {} while groupManager is not available yet!", event); |
| return; |
| } |
| |
| // check if the group is local |
| if (!groupManager.isLocalGroup(event.getSourceGroup().getName())) { |
| LOGGER.debug("CELLAR OBR: node is not part of the event cluster group {}", event.getSourceGroup().getName()); |
| return; |
| } |
| |
| // check if it's not a "local" event |
| if (event.getLocal() != null && event.getLocal().getId().equalsIgnoreCase(clusterManager.getNode().getId())) { |
| LOGGER.trace("CELLAR OBR: cluster event is local (coming from local synchronizer or listener)"); |
| return; |
| } |
| |
| String url = event.getUrl(); |
| try { |
| if (isAllowed(event.getSourceGroup(), Constants.URLS_CONFIG_CATEGORY, url, EventType.INBOUND) || event.getForce()) { |
| if (event.getType() == Constants.URL_ADD_EVENT_TYPE) { |
| LOGGER.debug("CELLAR OBR: adding repository URL {}", url); |
| obrService.addRepository(url); |
| } |
| if (event.getType() == Constants.URL_REMOVE_EVENT_TYPE) { |
| LOGGER.debug("CELLAR OBR: removing repository URL {}", url); |
| boolean removed = obrService.removeRepository(url); |
| if (!removed) { |
| LOGGER.warn("CELLAR OBR: repository URL {} has not been added to the OBR service", url); |
| } |
| } |
| } |
| } catch (Exception e) { |
| LOGGER.error("CELLAR OBR: failed to register repository URL {}", url, e); |
| } |
| } |
| |
| @Override |
| public Class<ClusterObrUrlEvent> getType() { |
| return ClusterObrUrlEvent.class; |
| } |
| |
| @Override |
| public Switch getSwitch() { |
| // load the switch status from the config |
| try { |
| Configuration configuration = configurationAdmin.getConfiguration(Configurations.NODE, null); |
| if (configuration != null) { |
| Boolean status = new Boolean((String) configuration.getProperties().get(Configurations.HANDLER + "." + this.getClass().getName())); |
| if (status) { |
| eventSwitch.turnOn(); |
| } else { |
| eventSwitch.turnOff(); |
| } |
| } |
| } catch (Exception e) { |
| // ignore |
| } |
| return this.eventSwitch; |
| } |
| |
| } |