Repository: samza Updated Branches: refs/heads/master 6743df319 -> 5e32a1bb0
SAMZA-547; add java serializable serde Project: http://git-wip-us.apache.org/repos/asf/samza/repo Commit: http://git-wip-us.apache.org/repos/asf/samza/commit/5e32a1bb Tree: http://git-wip-us.apache.org/repos/asf/samza/tree/5e32a1bb Diff: http://git-wip-us.apache.org/repos/asf/samza/diff/5e32a1bb Branch: refs/heads/master Commit: 5e32a1bb018cb0382ab4911c31554f8889de984f Parents: 6743df3 Author: Ruslan Khafizov <[email protected]> Authored: Thu Feb 12 14:43:31 2015 -0800 Committer: Chris Riccomini <[email protected]> Committed: Thu Feb 12 14:43:31 2015 -0800 ---------------------------------------------------------------------- .../samza/serializers/SerializableSerde.scala | 67 ++++++++++++++++++++ .../serializers/TestSerializableSerde.scala | 45 +++++++++++++ 2 files changed, 112 insertions(+) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/samza/blob/5e32a1bb/samza-core/src/main/scala/org/apache/samza/serializers/SerializableSerde.scala ---------------------------------------------------------------------- diff --git a/samza-core/src/main/scala/org/apache/samza/serializers/SerializableSerde.scala b/samza-core/src/main/scala/org/apache/samza/serializers/SerializableSerde.scala new file mode 100644 index 0000000..c43f863 --- /dev/null +++ b/samza-core/src/main/scala/org/apache/samza/serializers/SerializableSerde.scala @@ -0,0 +1,67 @@ +/* + * 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.serializers + +import java.io.ByteArrayInputStream +import java.io.ByteArrayOutputStream +import java.io.ObjectInputStream +import java.io.ObjectOutputStream + +import org.apache.samza.config.Config + +/** + * A serializer for Serializable + */ +class SerializableSerdeFactory[T <: java.io.Serializable] extends SerdeFactory[T] { + def getSerde(name: String, config: Config): Serde[T] = + new SerializableSerde[T] +} + +class SerializableSerde[T <: java.io.Serializable] extends Serde[T] { + def toBytes(obj: T): Array[Byte] = if (obj != null) { + val bos = new ByteArrayOutputStream + val oos = new ObjectOutputStream(bos) + + try { + oos.writeObject(obj) + } + finally { + oos.close() + } + + bos.toByteArray + } else { + null + } + + def fromBytes(bytes: Array[Byte]): T = if (bytes != null) { + val bis = new ByteArrayInputStream(bytes) + val ois = new ObjectInputStream(bis) + + try { + ois.readObject.asInstanceOf[T] + } + finally{ + ois.close() + } + } else { + null.asInstanceOf[T] + } +} http://git-wip-us.apache.org/repos/asf/samza/blob/5e32a1bb/samza-core/src/test/scala/org/apache/samza/serializers/TestSerializableSerde.scala ---------------------------------------------------------------------- diff --git a/samza-core/src/test/scala/org/apache/samza/serializers/TestSerializableSerde.scala b/samza-core/src/test/scala/org/apache/samza/serializers/TestSerializableSerde.scala new file mode 100644 index 0000000..8e899d0 --- /dev/null +++ b/samza-core/src/test/scala/org/apache/samza/serializers/TestSerializableSerde.scala @@ -0,0 +1,45 @@ +/* + * 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.serializers + +import org.junit.Assert._ +import org.junit.Test + +class TestSerializableSerde { + @Test + def testSerializableSerde { + val serde = new SerializableSerde[String] + assertNull(serde.toBytes(null)) + assertNull(serde.fromBytes(null)) + + val obj = "String is serializable" + + // Serialized string is prefix + string itself + val prefix = Array(0xAC, 0xED, 0x00, 0x05, 0x74, 0x00, 0x16).map(_.toByte) + val expected = (prefix ++ obj.getBytes("UTF-8")) + + val bytes = serde.toBytes(obj) + + assertArrayEquals(expected, bytes) + + val objRoundTrip:String = serde.fromBytes(bytes) + assertEquals(obj, objRoundTrip) + } +}
