Move atomix-storage to a top-level directory

[controller.git] / third-party / atomix / storage / src / main / java / io / atomix / storage / journal / MappableJournalSegmentWriter.java

diff --git a/third-party/atomix/storage/src/main/java/io/atomix/storage/journal/MappableJournalSegmentWriter.java b/third-party/atomix/storage/src/main/java/io/atomix/storage/journal/MappableJournalSegmentWriter.java
deleted file mode 100644 (file)
index f19783a..0000000
--- a/third-party/atomix/storage/src/main/java/io/atomix/storage/journal/MappableJournalSegmentWriter.java
+++ /dev/null
@@ -1,164 +0,0 @@
-/*
- * Copyright 2018-present Open Networking Foundation
- *
- * 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 io.atomix.storage.journal;
-
-import io.atomix.storage.journal.index.JournalIndex;
-import java.io.IOException;
-import java.nio.MappedByteBuffer;
-import java.nio.channels.FileChannel;
-
-/**
- * Mappable log segment writer.
- */
-class MappableJournalSegmentWriter<E> implements JournalWriter<E> {
-  private final FileChannel channel;
-  private final JournalSegment<E> segment;
-  private final int maxEntrySize;
-  private final JournalIndex index;
-  private final JournalSerdes namespace;
-  private JournalWriter<E> writer;
-
-  MappableJournalSegmentWriter(
-      FileChannel channel,
-      JournalSegment<E> segment,
-      int maxEntrySize,
-      JournalIndex index,
-      JournalSerdes namespace) {
-    this.channel = channel;
-    this.segment = segment;
-    this.maxEntrySize = maxEntrySize;
-    this.index = index;
-    this.namespace = namespace;
-    this.writer = new FileChannelJournalSegmentWriter<>(channel, segment, maxEntrySize, index, namespace);
-  }
-
-  /**
-   * Maps the segment writer into memory, returning the mapped buffer.
-   *
-   * @return the buffer that was mapped into memory
-   */
-  MappedByteBuffer map() {
-    if (writer instanceof MappedJournalSegmentWriter) {
-      return ((MappedJournalSegmentWriter<E>) writer).buffer();
-    }
-
-    try {
-      JournalWriter<E> writer = this.writer;
-      MappedByteBuffer buffer = channel.map(FileChannel.MapMode.READ_WRITE, 0, segment.descriptor().maxSegmentSize());
-      this.writer = new MappedJournalSegmentWriter<>(buffer, segment, maxEntrySize, index, namespace);
-      writer.close();
-      return buffer;
-    } catch (IOException e) {
-      throw new StorageException(e);
-    }
-  }
-
-  /**
-   * Unmaps the mapped buffer.
-   */
-  void unmap() {
-    if (writer instanceof MappedJournalSegmentWriter) {
-      JournalWriter<E> writer = this.writer;
-      this.writer = new FileChannelJournalSegmentWriter<>(channel, segment, maxEntrySize, index, namespace);
-      writer.close();
-    }
-  }
-
-  MappedByteBuffer buffer() {
-    JournalWriter<E> writer = this.writer;
-    if (writer instanceof MappedJournalSegmentWriter) {
-      return ((MappedJournalSegmentWriter<E>) writer).buffer();
-    }
-    return null;
-  }
-
-  /**
-   * Returns the writer's first index.
-   *
-   * @return the writer's first index
-   */
-  public long firstIndex() {
-    return segment.index();
-  }
-
-  /**
-   * Returns the size of the segment.
-   *
-   * @return the size of the segment
-   */
-  public int size() {
-    try {
-      return (int) channel.size();
-    } catch (IOException e) {
-      throw new StorageException(e);
-    }
-  }
-
-  @Override
-  public long getLastIndex() {
-    return writer.getLastIndex();
-  }
-
-  @Override
-  public Indexed<E> getLastEntry() {
-    return writer.getLastEntry();
-  }
-
-  @Override
-  public long getNextIndex() {
-    return writer.getNextIndex();
-  }
-
-  @Override
-  public <T extends E> Indexed<T> append(T entry) {
-    return writer.append(entry);
-  }
-
-  @Override
-  public void append(Indexed<E> entry) {
-    writer.append(entry);
-  }
-
-  @Override
-  public void commit(long index) {
-    writer.commit(index);
-  }
-
-  @Override
-  public void reset(long index) {
-    writer.reset(index);
-  }
-
-  @Override
-  public void truncate(long index) {
-    writer.truncate(index);
-  }
-
-  @Override
-  public void flush() {
-    writer.flush();
-  }
-
-  @Override
-  public void close() {
-    writer.close();
-    try {
-      channel.close();
-    } catch (IOException e) {
-      throw new StorageException(e);
-    }
-  }
-}