| /* |
| * Copyright 2015 Open Networking Laboratory |
| * |
| * 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.onosproject.store.consistent.impl; |
| |
| import java.util.List; |
| import java.util.Map; |
| import java.util.function.Supplier; |
| |
| import static com.google.common.base.Preconditions.*; |
| |
| import org.onosproject.store.service.ConsistentMapBuilder; |
| import org.onosproject.store.service.DatabaseUpdate; |
| import org.onosproject.store.service.Serializer; |
| import org.onosproject.store.service.Transaction; |
| import org.onosproject.store.service.TransactionContext; |
| import org.onosproject.store.service.TransactionalMap; |
| |
| import com.google.common.collect.Lists; |
| import com.google.common.collect.Maps; |
| import com.google.common.util.concurrent.Futures; |
| |
| /** |
| * Default TransactionContext implementation. |
| */ |
| public class DefaultTransactionContext implements TransactionContext { |
| private static final String TX_NOT_OPEN_ERROR = "Transaction Context is not open"; |
| |
| @SuppressWarnings("rawtypes") |
| private final Map<String, DefaultTransactionalMap> txMaps = Maps.newConcurrentMap(); |
| private boolean isOpen = false; |
| private final Database database; |
| private final long transactionId; |
| private final Supplier<ConsistentMapBuilder> mapBuilderSupplier; |
| |
| public DefaultTransactionContext(long transactionId, |
| Database database, |
| Supplier<ConsistentMapBuilder> mapBuilderSupplier) { |
| this.transactionId = transactionId; |
| this.database = checkNotNull(database); |
| this.mapBuilderSupplier = checkNotNull(mapBuilderSupplier); |
| } |
| |
| @Override |
| public long transactionId() { |
| return transactionId; |
| } |
| |
| @Override |
| public void begin() { |
| checkState(!isOpen, "Transaction Context is already open"); |
| isOpen = true; |
| } |
| |
| @Override |
| public boolean isOpen() { |
| return isOpen; |
| } |
| |
| @Override |
| @SuppressWarnings("unchecked") |
| public <K, V> TransactionalMap<K, V> getTransactionalMap(String mapName, |
| Serializer serializer) { |
| checkState(isOpen, TX_NOT_OPEN_ERROR); |
| checkNotNull(mapName); |
| checkNotNull(serializer); |
| return txMaps.computeIfAbsent(mapName, name -> new DefaultTransactionalMap<>( |
| name, |
| mapBuilderSupplier.get().withName(name).withSerializer(serializer).build(), |
| this, |
| serializer)); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public void commit() { |
| // TODO: rework commit implementation to be more intuitive |
| checkState(isOpen, TX_NOT_OPEN_ERROR); |
| CommitResponse response = null; |
| try { |
| List<DatabaseUpdate> updates = Lists.newLinkedList(); |
| txMaps.values().forEach(m -> updates.addAll(m.prepareDatabaseUpdates())); |
| Transaction transaction = new DefaultTransaction(transactionId, updates); |
| response = Futures.getUnchecked(database.prepareAndCommit(transaction)); |
| } finally { |
| if (response != null && !response.success()) { |
| abort(); |
| } |
| isOpen = false; |
| } |
| } |
| |
| @Override |
| public void abort() { |
| if (isOpen) { |
| try { |
| txMaps.values().forEach(m -> m.rollback()); |
| } finally { |
| isOpen = false; |
| } |
| } |
| } |
| } |