1 files changed, 54 insertions, 0 deletions
diff --git a/core/src/main/scala/org/apache/spark/broadcast/SourceInfo.scala b/core/src/main/scala/org/apache/spark/broadcast/SourceInfo.scala
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+++ b/core/src/main/scala/org/apache/spark/broadcast/SourceInfo.scala
@@ -0,0 +1,54 @@
+/*
+ * 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.broadcast
+
+import java.util.BitSet
+
+import org.apache.spark._
+
+/**
+ * Used to keep and pass around information of peers involved in a broadcast
+ */
+private[spark] case class SourceInfo (hostAddress: String,
+                       listenPort: Int,
+                       totalBlocks: Int = SourceInfo.UnusedParam,
+                       totalBytes: Int = SourceInfo.UnusedParam)
+extends Comparable[SourceInfo] with Logging {
+
+  var currentLeechers = 0
+  var receptionFailed = false
+
+  var hasBlocks = 0
+  var hasBlocksBitVector: BitSet = new BitSet (totalBlocks)
+
+  // Ascending sort based on leecher count
+  def compareTo (o: SourceInfo): Int = (currentLeechers - o.currentLeechers)
+}
+
+/**
+ * Helper Object of SourceInfo for its constants
+ */
+private[spark] object SourceInfo {
+  // Broadcast has not started yet! Should never happen.
+  val TxNotStartedRetry = -1
+  // Broadcast has already finished. Try default mechanism.
+  val TxOverGoToDefault = -3
+  // Other constants
+  val StopBroadcast = -2
+  val UnusedParam = 0
+}