| /** |
| * 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.apex.malhar.lib.state.spillable.inmem; |
| |
| import java.util.Map; |
| import java.util.concurrent.Future; |
| |
| import javax.validation.constraints.NotNull; |
| |
| import org.apache.apex.malhar.lib.state.spillable.SpillableStateStore; |
| import org.apache.hadoop.classification.InterfaceStability; |
| |
| import com.google.common.collect.Maps; |
| |
| import com.datatorrent.api.Context; |
| import com.datatorrent.netlet.util.Slice; |
| |
| /** |
| * A simple in memory implementation of a {@link SpillableStateStore} backed by a {@link Map}. |
| * |
| * @since 3.5.0 |
| */ |
| @InterfaceStability.Evolving |
| public class InMemSpillableStateStore implements SpillableStateStore |
| { |
| private Map<Long, Map<Slice, Slice>> store = Maps.newHashMap(); |
| |
| @Override |
| public void setup(Context.OperatorContext context) |
| { |
| |
| } |
| |
| @Override |
| public void beginWindow(long windowId) |
| { |
| |
| } |
| |
| @Override |
| public void endWindow() |
| { |
| |
| } |
| |
| @Override |
| public void teardown() |
| { |
| |
| } |
| |
| @Override |
| public void put(long bucketId, @NotNull Slice key, @NotNull Slice value) |
| { |
| Map<Slice, Slice> bucket = store.get(bucketId); |
| |
| if (bucket == null) { |
| bucket = Maps.newHashMap(); |
| store.put(bucketId, bucket); |
| } |
| |
| bucket.put(key, value); |
| } |
| |
| @Override |
| public Slice getSync(long bucketId, @NotNull Slice key) |
| { |
| Map<Slice, Slice> bucket = store.get(bucketId); |
| |
| if (bucket == null) { |
| bucket = Maps.newHashMap(); |
| store.put(bucketId, bucket); |
| } |
| |
| return bucket.get(key); |
| } |
| |
| @Override |
| public Future<Slice> getAsync(long bucketId, @NotNull Slice key) |
| { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public void beforeCheckpoint(long l) |
| { |
| } |
| |
| @Override |
| public void checkpointed(long l) |
| { |
| } |
| |
| @Override |
| public void committed(long l) |
| { |
| } |
| |
| @Override |
| public String toString() |
| { |
| return store.toString(); |
| } |
| } |