| /* |
| * 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.service; |
| |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.usergrid.corepersistence.pipeline.builder.EntityBuilder; |
| import org.apache.usergrid.corepersistence.pipeline.builder.IdBuilder; |
| import org.apache.usergrid.corepersistence.pipeline.builder.PipelineBuilderFactory; |
| import org.apache.usergrid.corepersistence.pipeline.read.ResultsPage; |
| import org.apache.usergrid.corepersistence.rx.impl.AllEntityIdsObservable; |
| import org.apache.usergrid.corepersistence.util.CpNamingUtils; |
| import org.apache.usergrid.persistence.ConnectionRef; |
| import org.apache.usergrid.persistence.collection.serialization.impl.migration.EntityIdScope; |
| import org.apache.usergrid.persistence.core.scope.ApplicationScope; |
| import org.apache.usergrid.persistence.graph.GraphManager; |
| import org.apache.usergrid.persistence.graph.GraphManagerFactory; |
| import org.apache.usergrid.persistence.graph.SearchByEdge; |
| import org.apache.usergrid.persistence.graph.SearchByEdgeType; |
| import org.apache.usergrid.persistence.graph.impl.SimpleSearchByEdge; |
| import org.apache.usergrid.persistence.graph.impl.SimpleSearchByEdgeType; |
| import org.apache.usergrid.persistence.graph.impl.SimpleSearchEdgeType; |
| import org.apache.usergrid.persistence.model.entity.Entity; |
| import org.apache.usergrid.persistence.model.entity.Id; |
| |
| import com.google.common.base.Optional; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| |
| import rx.Observable; |
| |
| |
| @Singleton |
| public class ConnectionServiceImpl implements ConnectionService { |
| |
| |
| private static final Logger logger = LoggerFactory.getLogger( ConnectionServiceImpl.class ); |
| |
| private final PipelineBuilderFactory pipelineBuilderFactory; |
| private final AllEntityIdsObservable allEntityIdsObservable; |
| private final GraphManagerFactory graphManagerFactory; |
| |
| |
| @Inject |
| public ConnectionServiceImpl( final PipelineBuilderFactory pipelineBuilderFactory, |
| final AllEntityIdsObservable allEntityIdsObservable, |
| final GraphManagerFactory graphManagerFactory ) { |
| this.pipelineBuilderFactory = pipelineBuilderFactory; |
| this.allEntityIdsObservable = allEntityIdsObservable; |
| this.graphManagerFactory = graphManagerFactory; |
| } |
| |
| |
| @Override |
| public Observable<ResultsPage<Entity>> searchConnection( final ConnectionSearch search ) { |
| //set startid -- graph | es query filter -- load entities filter (verifies exists) --> results page collector |
| // -> 1.0 results |
| |
| // startid -- graph edge load -- entity load (verify) from ids -> results page collector |
| // startid -- eq query candiddate -- entity load (verify) from canddiates -> results page collector |
| |
| //startid -- graph edge load -- entity id verify --> filter to connection ref --> connection ref collector |
| //startid -- eq query candiddate -- candidate id verify --> filter to connection ref --> connection ref |
| // collector |
| |
| |
| final Optional<String> query = search.getQuery(); |
| |
| final IdBuilder pipelineBuilder = |
| pipelineBuilderFactory.create( search.getApplicationScope() ).withCursor( search.getCursor() ) |
| .withLimit( search.getLimit() ).fromId( search.getSourceNodeId() ); |
| |
| |
| //we want to load all entities |
| |
| final EntityBuilder results; |
| |
| |
| if ( !query.isPresent() ) { |
| if(search.getIsConnecting()){ |
| results = pipelineBuilder.traverseReverseConnection(search.getConnectionName(), search.getEntityType()).loadEntities(); |
| } |
| else { |
| results = |
| pipelineBuilder.traverseConnection(search.getConnectionName(), search.getEntityType()).loadEntities(); |
| } |
| } |
| |
| else { |
| |
| results = |
| pipelineBuilder.searchConnection( search.getConnectionName(), query.get(), search.getEntityType(), |
| search.getAnalyzeOnly(), search.getReturnQuery() ) |
| .loadEntities(); |
| } |
| |
| |
| return results.build(); |
| } |
| |
| |
| @Override |
| public Observable<ResultsPage<ConnectionRef>> searchConnectionAsRefs( final ConnectionSearch search ) { |
| |
| final Optional<String> query = search.getQuery(); |
| |
| final Id sourceNodeId = search.getSourceNodeId(); |
| |
| final IdBuilder pipelineBuilder = |
| pipelineBuilderFactory.create( search.getApplicationScope() ).withCursor( search.getCursor() ) |
| .withLimit( search.getLimit() ).fromId( sourceNodeId ); |
| |
| |
| final IdBuilder traversedIds; |
| final String connectionName = search.getConnectionName(); |
| |
| if ( !query.isPresent() ) { |
| traversedIds = pipelineBuilder.traverseConnection( connectionName, search.getEntityType() ); |
| } |
| else { |
| traversedIds = |
| pipelineBuilder.searchConnection( connectionName, query.get(), search.getEntityType(), |
| search.getAnalyzeOnly(), search.getReturnQuery() ).loadIds(); |
| } |
| |
| //create connection refs |
| |
| final Observable<ResultsPage<ConnectionRef>> results = |
| traversedIds.loadConnectionRefs( sourceNodeId, connectionName ).build(); |
| |
| return results; |
| } |
| |
| |
| @Override |
| public Observable<ConnectionScope> deDupeConnections( |
| final Observable<ApplicationScope> applicationScopeObservable ) { |
| |
| |
| final Observable<EntityIdScope> entityIds = allEntityIdsObservable.getEntities( applicationScopeObservable ); |
| //now we have an observable of entityIds. Walk each connection type |
| |
| //get all edge types for connections |
| return entityIds.flatMap( entityIdScope -> { |
| |
| final ApplicationScope applicationScope = entityIdScope.getApplicationScope(); |
| final Id entityId = entityIdScope.getId(); |
| |
| final GraphManager gm = graphManagerFactory.createEdgeManager( applicationScope ); |
| |
| if (logger.isDebugEnabled()) { |
| logger.debug("Checking connections of id {} in application {}", entityId, applicationScope); |
| } |
| |
| return gm.getEdgeTypesFromSource( |
| new SimpleSearchEdgeType( entityId, CpNamingUtils.EDGE_CONN_PREFIX, Optional.absent() ) ) |
| |
| //now load all edges from this node of this type |
| .flatMap( edgeType -> { |
| |
| if (logger.isDebugEnabled()) { |
| logger.debug("Found edge of types of {}, searching for edges", edgeType); |
| } |
| |
| final SearchByEdgeType searchByEdge = |
| new SimpleSearchByEdgeType( entityId, edgeType, Long.MAX_VALUE, |
| SearchByEdgeType.Order.DESCENDING, Optional.absent() ); |
| |
| //load edges from the source the with type specified |
| return gm.loadEdgesFromSource( searchByEdge ); |
| } ) |
| |
| //now that we have a stream of edges, stream all versions |
| .flatMap( edge -> { |
| |
| if (logger.isDebugEnabled()) { |
| logger.debug("Found edge {}, searching for multiple versions of edge", edge); |
| } |
| |
| //keep only the most recent |
| final SearchByEdge searchByEdge = |
| new SimpleSearchByEdge( edge.getSourceNode(), edge.getType(), edge.getTargetNode(), Long.MAX_VALUE, |
| SearchByEdgeType.Order.DESCENDING, Optional.absent() ); |
| return gm.loadEdgeVersions( searchByEdge ) |
| //skip the first version since it's the one we want to retain |
| .skip( 1 ) |
| //mark for deletion |
| .flatMap( edgeToDelete -> { |
| |
| if (logger.isDebugEnabled()) { |
| logger.debug("Deleting edge {}", edgeToDelete); |
| } |
| |
| //mark the edge and ignore the cleanup result |
| return gm.markEdge( edgeToDelete ); |
| } ) |
| //mark all versions, then on the last, delete them from cass |
| .flatMap( lastMarkedEdge -> gm.deleteEdge( lastMarkedEdge ) ); |
| |
| |
| // validate there is only 1 version of it, delete anything > than the min |
| |
| } ).map( deletedEdge -> new ConnectionScope( applicationScope, deletedEdge ) ); |
| } ); |
| } |
| } |