| /* |
| * 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.bookkeeper.bookie; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| |
| import com.google.common.base.MoreObjects; |
| import com.google.common.base.Objects; |
| import com.google.common.collect.Lists; |
| import java.io.IOException; |
| import java.util.List; |
| |
| /** |
| * A {@code CheckpointSourceList} manages a list of {@link CheckpointSource}s. |
| */ |
| public class CheckpointSourceList implements CheckpointSource { |
| |
| private final List<? extends CheckpointSource> checkpointSourcesList; |
| |
| public CheckpointSourceList(List<? extends CheckpointSource> checkpointSourcesList) { |
| this.checkpointSourcesList = checkpointSourcesList; |
| } |
| |
| @Override |
| public Checkpoint newCheckpoint() { |
| return new CheckpointList(this); |
| } |
| |
| @Override |
| public void checkpointComplete(Checkpoint checkpoint, boolean compact) throws IOException { |
| if (checkpoint == Checkpoint.MAX || checkpoint == Checkpoint.MIN) { |
| return; |
| } |
| |
| checkArgument(checkpoint instanceof CheckpointList); |
| CheckpointList checkpointList = (CheckpointList) checkpoint; |
| |
| checkArgument(checkpointList.source == this); |
| checkpointList.checkpointComplete(compact); |
| } |
| |
| private static class CheckpointList implements Checkpoint { |
| private final CheckpointSourceList source; |
| private final List<Checkpoint> checkpoints; |
| |
| public CheckpointList(CheckpointSourceList source) { |
| this.source = source; |
| this.checkpoints = Lists.newArrayListWithCapacity(source.checkpointSourcesList.size()); |
| for (CheckpointSource checkpointSource : source.checkpointSourcesList) { |
| checkpoints.add(checkpointSource.newCheckpoint()); |
| } |
| } |
| |
| private void checkpointComplete(boolean compact) throws IOException { |
| for (int i = 0; i < source.checkpointSourcesList.size(); i++) { |
| source.checkpointSourcesList.get(i).checkpointComplete(checkpoints.get(i), compact); |
| } |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hashCode(source, checkpoints); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (!(o instanceof CheckpointList)) { |
| return false; |
| } |
| Checkpoint other = (Checkpoint) o; |
| return 0 == compareTo(other); |
| } |
| |
| @Override |
| public int compareTo(Checkpoint o) { |
| if (o == Checkpoint.MAX) { |
| return -1; |
| } else if (o == Checkpoint.MIN) { |
| return 1; |
| } |
| |
| checkArgument(o instanceof CheckpointList); |
| CheckpointList other = (CheckpointList) o; |
| if (checkpoints.size() != other.checkpoints.size()) { |
| return Integer.compare(checkpoints.size(), other.checkpoints.size()); |
| } |
| |
| for (int i = 0; i < checkpoints.size(); i++) { |
| int res = checkpoints.get(i).compareTo(other.checkpoints.get(i)); |
| if (res != 0) { |
| return res; |
| } |
| } |
| |
| return 0; |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(CheckpointList.class) |
| .add("checkpoints", checkpoints) |
| .toString(); |
| } |
| |
| } |
| |
| } |