| /* |
| * 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.samza.system.hdfs.writer |
| |
| |
| import org.apache.hadoop.fs.{FileSystem, Path} |
| import org.apache.hadoop.io.{SequenceFile, Writable, LongWritable, Text} |
| |
| import org.apache.samza.system.hdfs.HdfsConfig |
| import org.apache.samza.system.hdfs.HdfsConfig._ |
| import org.apache.samza.system.OutgoingMessageEnvelope |
| |
| |
| /** |
| * Implentation of HdfsWriter for SequenceFiles using LongWritable keys and BytesWritable values. |
| * The key type is currently just a dummy record. This class is usable when the outgoing message |
| * can be converted directly to a String at write time. |
| */ |
| class TextSequenceFileHdfsWriter(dfs: FileSystem, systemName: String, config: HdfsConfig) extends SequenceFileHdfsWriter(dfs, systemName, config) { |
| private lazy val defaultLongWritableKey = new LongWritable(0L) |
| |
| def getKey = defaultLongWritableKey |
| |
| def getValue(outgoing: OutgoingMessageEnvelope) = { |
| new Text(outgoing.getMessage.asInstanceOf[String]) |
| } |
| |
| def getOutputSizeInBytes(writable: Writable) = { |
| writable.asInstanceOf[Text].getLength |
| } |
| |
| def keyClass = classOf[LongWritable] |
| |
| def valueClass = classOf[Text] |
| |
| } |