1 files changed, 42 insertions, 0 deletions
diff --git a/core/src/main/scala/org/apache/spark/network/MessageChunk.scala b/core/src/main/scala/org/apache/spark/network/MessageChunk.scala
new file mode 100644
index 0000000000..e0fe57b80d
--- /dev/null
+++ b/core/src/main/scala/org/apache/spark/network/MessageChunk.scala
@@ -0,0 +1,42 @@
+/*
+ * 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
+
+import java.nio.ByteBuffer
+
+import scala.collection.mutable.ArrayBuffer
+
+
+private[network]
+class MessageChunk(val header: MessageChunkHeader, val buffer: ByteBuffer) {
+
+  val size = if (buffer == null) 0 else buffer.remaining
+
+  lazy val buffers = {
+    val ab = new ArrayBuffer[ByteBuffer]()
+    ab += header.buffer
+    if (buffer != null) {
+      ab += buffer
+    }
+    ab
+  }
+
+  override def toString = {
+    "" + this.getClass.getSimpleName + " (id = " + header.id + ", size = " + size + ")"
+  }
+}