| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.usergrid.corepersistence.rx.impl; |
| |
| |
| import java.util.Arrays; |
| import java.util.UUID; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.usergrid.corepersistence.util.CpNamingUtils; |
| import org.apache.usergrid.persistence.Schema; |
| import org.apache.usergrid.persistence.collection.EntityCollectionManager; |
| import org.apache.usergrid.persistence.collection.EntityCollectionManagerFactory; |
| import org.apache.usergrid.persistence.core.scope.ApplicationScope; |
| import org.apache.usergrid.persistence.graph.Edge; |
| import org.apache.usergrid.persistence.graph.GraphManager; |
| import org.apache.usergrid.persistence.graph.GraphManagerFactory; |
| import org.apache.usergrid.persistence.graph.SearchByEdgeType; |
| import org.apache.usergrid.persistence.graph.impl.SimpleSearchByEdgeType; |
| import org.apache.usergrid.persistence.model.entity.Entity; |
| import org.apache.usergrid.persistence.model.entity.Id; |
| import org.apache.usergrid.utils.UUIDUtils; |
| |
| import com.google.common.base.Optional; |
| import com.google.inject.Inject; |
| |
| import rx.Observable; |
| import rx.functions.Func1; |
| |
| import static org.apache.usergrid.corepersistence.util.CpNamingUtils.getApplicationScope; |
| |
| |
| /** |
| * An observable that will emit all application stored in the system. |
| */ |
| public class AllApplicationsObservableImpl implements AllApplicationsObservable { |
| |
| private static final Logger logger = LoggerFactory.getLogger( AllApplicationsObservableImpl.class ); |
| private final EntityCollectionManagerFactory entityCollectionManagerFactory; |
| private final GraphManagerFactory graphManagerFactory; |
| |
| @Inject |
| public AllApplicationsObservableImpl( EntityCollectionManagerFactory entityCollectionManagerFactory, |
| GraphManagerFactory graphManagerFactory ){ |
| |
| this.entityCollectionManagerFactory = entityCollectionManagerFactory; |
| this.graphManagerFactory = graphManagerFactory; |
| } |
| |
| |
| |
| |
| |
| @Override |
| public Observable<ApplicationScope> getData() { |
| |
| //emit our hard coded applications that are used the manage the system first. |
| //this way consumers can perform whatever work they need to on the root system first |
| final Observable<ApplicationScope> systemIds = Observable.just( |
| getApplicationScope( CpNamingUtils.MANAGEMENT_APPLICATION_ID )); |
| |
| final ApplicationScope appScope = getApplicationScope( CpNamingUtils.MANAGEMENT_APPLICATION_ID ); |
| |
| final EntityCollectionManager collectionManager = |
| entityCollectionManagerFactory.createCollectionManager( appScope ); |
| |
| final GraphManager gm = graphManagerFactory.createEdgeManager(appScope); |
| |
| String edgeType = CpNamingUtils.getEdgeTypeFromCollectionName( CpNamingUtils.APPLICATION_INFOS ); |
| |
| Id rootAppId = appScope.getApplication(); |
| |
| |
| //we have app infos. For each of these app infos, we have to load the application itself |
| Observable<ApplicationScope> appIds = gm.loadEdgesFromSource( |
| new SimpleSearchByEdgeType( rootAppId, edgeType, Long.MAX_VALUE, SearchByEdgeType.Order.DESCENDING, |
| Optional.absent() ) ).flatMap(edge -> { |
| |
| //get the app info and load it |
| final Id appInfo = edge.getTargetNode(); |
| |
| return collectionManager.load( appInfo ) |
| //filter out null entities |
| .filter(entity -> { |
| if ( entity == null ) { |
| logger.warn( "Encountered a null application info for id {}", appInfo ); |
| return false; |
| } |
| |
| return true; |
| }) |
| //get the id from the entity |
| .map(entity -> { |
| final UUID uuid =entity.getId().getUuid(); |
| return getApplicationScope( uuid ); |
| }); |
| }); |
| |
| return Observable.merge( systemIds, appIds ); |
| } |
| |
| |
| |
| } |