| /* |
| * 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.flink.table.runtime.sort; |
| |
| import org.apache.flink.runtime.io.disk.iomanager.FileIOChannel; |
| |
| import java.io.Closeable; |
| import java.io.File; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import static org.apache.flink.util.Preconditions.checkArgument; |
| |
| /** |
| * Channel manager to manage the life cycle of spill channels. |
| */ |
| public class SpillChannelManager implements Closeable { |
| |
| private final HashSet<FileIOChannel.ID> channels; |
| private final HashSet<FileIOChannel> openChannels; |
| |
| private volatile boolean closed; |
| |
| public SpillChannelManager() { |
| this.channels = new HashSet<>(64); |
| this.openChannels = new HashSet<>(64); |
| } |
| |
| /** |
| * Add a new File channel. |
| */ |
| public synchronized void addChannel(FileIOChannel.ID id) { |
| checkArgument(!closed); |
| channels.add(id); |
| } |
| |
| /** |
| * Open File channels. |
| */ |
| public synchronized void addOpenChannels(List<FileIOChannel> toOpen) { |
| checkArgument(!closed); |
| for (FileIOChannel channel : toOpen) { |
| openChannels.add(channel); |
| channels.remove(channel.getChannelID()); |
| } |
| } |
| |
| public synchronized void removeChannel(FileIOChannel.ID id) { |
| checkArgument(!closed); |
| channels.remove(id); |
| } |
| |
| @Override |
| public synchronized void close() { |
| |
| if (this.closed) { |
| return; |
| } |
| |
| this.closed = true; |
| |
| for (Iterator<FileIOChannel> channels = this.openChannels.iterator(); channels.hasNext(); ) { |
| final FileIOChannel channel = channels.next(); |
| channels.remove(); |
| try { |
| channel.closeAndDelete(); |
| } catch (Throwable ignored) { |
| } |
| } |
| |
| for (Iterator<FileIOChannel.ID> channels = this.channels.iterator(); channels.hasNext(); ) { |
| final FileIOChannel.ID channel = channels.next(); |
| channels.remove(); |
| try { |
| final File f = new File(channel.getPath()); |
| if (f.exists()) { |
| f.delete(); |
| } |
| } catch (Throwable ignored) { |
| } |
| } |
| } |
| |
| } |