| /* |
| * 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.persistence.collection.serialization.impl; |
| |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.UUID; |
| |
| import org.apache.usergrid.persistence.collection.MvccLogEntry; |
| import org.apache.usergrid.persistence.collection.VersionSet; |
| import org.apache.usergrid.persistence.collection.serialization.MvccLogEntrySerializationStrategy; |
| import org.apache.usergrid.persistence.collection.serialization.impl.migration.CollectionMigrationPlugin; |
| import org.apache.usergrid.persistence.core.astyanax.MultiTenantColumnFamilyDefinition; |
| import org.apache.usergrid.persistence.core.migration.data.MigrationInfoCache; |
| import org.apache.usergrid.persistence.core.migration.data.MigrationRelationship; |
| import org.apache.usergrid.persistence.core.migration.data.VersionedMigrationSet; |
| import org.apache.usergrid.persistence.core.scope.ApplicationScope; |
| import org.apache.usergrid.persistence.model.entity.Id; |
| |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| import com.netflix.astyanax.Keyspace; |
| import com.netflix.astyanax.MutationBatch; |
| |
| |
| /** |
| * The proxy for performing log entry serialization |
| */ |
| @Singleton |
| public class MvccLogEntrySerializationProxyImpl implements MvccLogEntrySerializationStrategy { |
| |
| protected final Keyspace keyspace; |
| private final VersionedMigrationSet<MvccLogEntrySerializationStrategy> versions; |
| private final MigrationInfoCache migrationInfoCache; |
| |
| |
| @Inject |
| public MvccLogEntrySerializationProxyImpl( final Keyspace keyspace, |
| final VersionedMigrationSet<MvccLogEntrySerializationStrategy> |
| allVersions, |
| final MigrationInfoCache migrationInfoCache ) { |
| |
| this.keyspace = keyspace; |
| this.migrationInfoCache = migrationInfoCache; |
| this.versions = allVersions; |
| } |
| |
| |
| @Override |
| public MutationBatch write( final ApplicationScope applicationScope, final MvccLogEntry entry ) { |
| final MigrationRelationship<MvccLogEntrySerializationStrategy> migration = getMigrationRelationShip(); |
| |
| if ( migration.needsMigration() ) { |
| final MutationBatch aggregateBatch = keyspace.prepareMutationBatch(); |
| |
| aggregateBatch.mergeShallow( migration.from.write( applicationScope, entry ) ); |
| aggregateBatch.mergeShallow( migration.to.write( applicationScope, entry ) ); |
| |
| return aggregateBatch; |
| } |
| |
| return migration.to.write( applicationScope, entry ); |
| } |
| |
| |
| @Override |
| public VersionSet load( final ApplicationScope applicationScope, final Collection<Id> entityIds, |
| final UUID version ) { |
| |
| |
| final MigrationRelationship<MvccLogEntrySerializationStrategy> migration = getMigrationRelationShip(); |
| |
| if ( migration.needsMigration() ) { |
| return migration.from.load( applicationScope, entityIds, version ); |
| } |
| |
| return migration.to.load( applicationScope, entityIds, version ); |
| } |
| |
| |
| @Override |
| public List<MvccLogEntry> load( final ApplicationScope applicationScope, final Id entityId, final UUID version, |
| final int maxSize ) { |
| final MigrationRelationship<MvccLogEntrySerializationStrategy> migration = getMigrationRelationShip(); |
| |
| if ( migration.needsMigration() ) { |
| return migration.from.load( applicationScope, entityId, version, maxSize ); |
| } |
| |
| return migration.to.load( applicationScope, entityId, version, maxSize ); |
| } |
| |
| |
| @Override |
| public List<MvccLogEntry> loadReversed( final ApplicationScope applicationScope, final Id entityId, |
| final UUID minVersion, final int maxSize ) { |
| |
| final MigrationRelationship<MvccLogEntrySerializationStrategy> migration = getMigrationRelationShip(); |
| |
| if ( migration.needsMigration() ) { |
| return migration.from.loadReversed( applicationScope, entityId, minVersion, maxSize ); |
| } |
| |
| return migration.to.loadReversed( applicationScope, entityId, minVersion, maxSize ); |
| } |
| |
| |
| @Override |
| public MutationBatch delete( final ApplicationScope applicationScope, final Id entityId, final UUID version ) { |
| final MigrationRelationship<MvccLogEntrySerializationStrategy> migration = getMigrationRelationShip(); |
| |
| if ( migration.needsMigration() ) { |
| final MutationBatch aggregateBatch = keyspace.prepareMutationBatch(); |
| |
| aggregateBatch.mergeShallow( migration.from.delete( applicationScope, entityId, version ) ); |
| aggregateBatch.mergeShallow( migration.to.delete( applicationScope, entityId, version ) ); |
| |
| return aggregateBatch; |
| } |
| |
| return migration.to.delete( applicationScope, entityId, version ); |
| } |
| |
| |
| @Override |
| public Collection<MultiTenantColumnFamilyDefinition> getColumnFamilies() { |
| return Collections.emptyList(); |
| } |
| |
| |
| @Override |
| public int getImplementationVersion() { |
| throw new UnsupportedOperationException( "Not supported in the proxy" ); |
| } |
| |
| |
| /** |
| * Return true if we're on an old version |
| */ |
| private MigrationRelationship<MvccLogEntrySerializationStrategy> getMigrationRelationShip() { |
| return this.versions |
| .getMigrationRelationship( migrationInfoCache.getVersion( CollectionMigrationPlugin.PLUGIN_NAME ) ); |
| } |
| } |