diff options
Diffstat (limited to 'common/network-common/src/main/java/org/apache/spark/network/buffer/NioManagedBuffer.java')
-rw-r--r-- | common/network-common/src/main/java/org/apache/spark/network/buffer/NioManagedBuffer.java | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/common/network-common/src/main/java/org/apache/spark/network/buffer/NioManagedBuffer.java b/common/network-common/src/main/java/org/apache/spark/network/buffer/NioManagedBuffer.java new file mode 100644 index 0000000000..631d767715 --- /dev/null +++ b/common/network-common/src/main/java/org/apache/spark/network/buffer/NioManagedBuffer.java @@ -0,0 +1,75 @@ +/* + * 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.spark.network.buffer; + +import java.io.IOException; +import java.io.InputStream; +import java.nio.ByteBuffer; + +import com.google.common.base.Objects; +import io.netty.buffer.ByteBufInputStream; +import io.netty.buffer.Unpooled; + +/** + * A {@link ManagedBuffer} backed by {@link ByteBuffer}. + */ +public class NioManagedBuffer extends ManagedBuffer { + private final ByteBuffer buf; + + public NioManagedBuffer(ByteBuffer buf) { + this.buf = buf; + } + + @Override + public long size() { + return buf.remaining(); + } + + @Override + public ByteBuffer nioByteBuffer() throws IOException { + return buf.duplicate(); + } + + @Override + public InputStream createInputStream() throws IOException { + return new ByteBufInputStream(Unpooled.wrappedBuffer(buf)); + } + + @Override + public ManagedBuffer retain() { + return this; + } + + @Override + public ManagedBuffer release() { + return this; + } + + @Override + public Object convertToNetty() throws IOException { + return Unpooled.wrappedBuffer(buf); + } + + @Override + public String toString() { + return Objects.toStringHelper(this) + .add("buf", buf) + .toString(); + } +} + |