| // Copyright (C) 2016 The Android Open Source Project |
| // |
| // 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 com.googlesource.gerrit.plugins.events; |
| |
| import com.google.common.base.Supplier; |
| import com.google.gerrit.entities.EntitiesAdapterFactory; |
| import com.google.gerrit.entities.Project; |
| import com.google.gerrit.extensions.annotations.PluginName; |
| import com.google.gerrit.extensions.registration.DynamicSet; |
| import com.google.gerrit.server.config.GerritServerConfigProvider; |
| import com.google.gerrit.server.config.PluginConfig; |
| import com.google.gerrit.server.events.Event; |
| import com.google.gerrit.server.events.EventListener; |
| import com.google.gerrit.server.events.ProjectNameKeyAdapter; |
| import com.google.gerrit.server.events.SupplierSerializer; |
| import com.google.gson.Gson; |
| import com.google.gson.GsonBuilder; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| import java.io.IOException; |
| import java.util.HashSet; |
| import java.util.Set; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| @Singleton |
| public class CoreListener implements EventListener { |
| private static Logger log = LoggerFactory.getLogger(CoreListener.class); |
| |
| protected static final String KEY_FILTER = "filter"; |
| protected static final String FILTER_TYPE_DROP = "DROP"; |
| protected static final String FILTER_ELEMENT_CLASSNAME = "classname"; |
| |
| protected static final Gson gson = |
| new GsonBuilder() |
| .registerTypeAdapter(Supplier.class, new SupplierSerializer()) |
| .registerTypeAdapter(Project.NameKey.class, new ProjectNameKeyAdapter()) |
| .registerTypeAdapterFactory(EntitiesAdapterFactory.create()) |
| .create(); |
| |
| protected final String pluginName; |
| protected final GerritServerConfigProvider gerritServerConfigProvider; |
| protected final DynamicSet<StreamEventListener> listeners; |
| protected final EventStore store; |
| protected Set<String> dropEventNames = new HashSet<>(); |
| |
| @Inject |
| protected CoreListener( |
| @PluginName String pluginName, |
| GerritServerConfigProvider gerritServerConfigProvider, |
| EventStore store, |
| DynamicSet<StreamEventListener> listeners) { |
| this.pluginName = pluginName; |
| this.gerritServerConfigProvider = gerritServerConfigProvider; |
| this.store = store; |
| this.listeners = listeners; |
| readAndParseCfg(); |
| } |
| |
| @Override |
| public void onEvent(Event event) { |
| if (dropEventNames.contains(event.getClass().getName())) { |
| return; |
| } |
| try { |
| store.add(gson.toJson(event)); |
| } catch (IOException e) { |
| log.error("Cannot add event to event store", e); |
| } |
| for (StreamEventListener l : listeners) { |
| l.onStreamEventUpdate(); |
| } |
| } |
| |
| protected void readAndParseCfg() { |
| PluginConfig cfg = |
| PluginConfig.createFromGerritConfig(pluginName, gerritServerConfigProvider.loadConfig()); |
| for (String filter : cfg.getStringList(KEY_FILTER)) { |
| String pieces[] = filter.split(" "); |
| if (pieces.length == 3 |
| && FILTER_TYPE_DROP.equals(pieces[0]) |
| && FILTER_ELEMENT_CLASSNAME.equals(pieces[1])) { |
| dropEventNames.add(pieces[2]); |
| } else { |
| log.error("Ignoring invalid filter: " + filter); |
| } |
| } |
| } |
| } |