| /** |
| * 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.gora.util; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.DataInput; |
| import java.io.DataInputStream; |
| import java.io.DataOutput; |
| import java.io.DataOutputStream; |
| import java.io.EOFException; |
| import java.io.IOException; |
| import java.util.Arrays; |
| |
| import junit.framework.Assert; |
| |
| import org.apache.avro.ipc.ByteBufferInputStream; |
| import org.apache.avro.ipc.ByteBufferOutputStream; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.apache.gora.mapreduce.GoraMapReduceUtils; |
| import org.apache.gora.util.IOUtils; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.io.DataInputBuffer; |
| import org.apache.hadoop.io.DataOutputBuffer; |
| import org.apache.hadoop.io.Text; |
| import org.apache.hadoop.io.Writable; |
| import org.junit.Test; |
| |
| /** |
| * Test case for {@link IOUtils} class. |
| */ |
| public class TestIOUtils { |
| |
| public static final Logger log = LoggerFactory.getLogger(TestIOUtils.class); |
| |
| public static Configuration conf = new Configuration(); |
| |
| private static final int BOOL_ARRAY_MAX_LENGTH = 30; |
| private static final int STRING_ARRAY_MAX_LENGTH = 30; |
| |
| private static class BoolArrayWrapper implements Writable { |
| boolean[] arr; |
| @SuppressWarnings("unused") |
| public BoolArrayWrapper() { |
| } |
| public BoolArrayWrapper(boolean[] arr) { |
| this.arr = arr; |
| } |
| @Override |
| public void readFields(DataInput in) throws IOException { |
| this.arr = IOUtils.readBoolArray(in); |
| } |
| @Override |
| public void write(DataOutput out) throws IOException { |
| IOUtils.writeBoolArray(out, arr); |
| } |
| @Override |
| public boolean equals(Object obj) { |
| return Arrays.equals(arr, ((BoolArrayWrapper)obj).arr); |
| } |
| } |
| |
| private static class StringArrayWrapper implements Writable { |
| String[] arr; |
| @SuppressWarnings("unused") |
| public StringArrayWrapper() { |
| } |
| public StringArrayWrapper(String[] arr) { |
| this.arr = arr; |
| } |
| @Override |
| public void readFields(DataInput in) throws IOException { |
| this.arr = IOUtils.readStringArray(in); |
| } |
| @Override |
| public void write(DataOutput out) throws IOException { |
| IOUtils.writeStringArray(out, arr); |
| } |
| @Override |
| public boolean equals(Object obj) { |
| return Arrays.equals(arr, ((StringArrayWrapper)obj).arr); |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| public static <T> void testSerializeDeserialize(T... objects) throws Exception { |
| ByteBufferOutputStream os = new ByteBufferOutputStream(); |
| DataOutputStream dos = new DataOutputStream(os); |
| ByteBufferInputStream is = null; |
| DataInputStream dis = null; |
| |
| GoraMapReduceUtils.setIOSerializations(conf, true); |
| |
| try { |
| for(T before : objects) { |
| IOUtils.serialize(conf, dos , before, (Class<T>)before.getClass()); |
| dos.flush(); |
| } |
| |
| is = new ByteBufferInputStream(os.getBufferList()); |
| dis = new DataInputStream(is); |
| |
| for(T before : objects) { |
| T after = IOUtils.deserialize(conf, dis, null, (Class<T>)before.getClass()); |
| |
| log.info("Before: " + before); |
| log.info("After : " + after); |
| |
| Assert.assertEquals(before, after); |
| } |
| |
| //assert that the end of input is reached |
| try { |
| long skipped = dis.skip(1); |
| Assert.assertEquals(0, skipped); |
| }catch (EOFException expected) { |
| //either should throw exception or return 0 as skipped |
| } |
| }finally { |
| org.apache.hadoop.io.IOUtils.closeStream(dos); |
| org.apache.hadoop.io.IOUtils.closeStream(os); |
| org.apache.hadoop.io.IOUtils.closeStream(dis); |
| org.apache.hadoop.io.IOUtils.closeStream(is); |
| } |
| } |
| |
| @Test |
| public void testWritableSerde() throws Exception { |
| Text text = new Text("foo goes to a bar to get some buzz"); |
| testSerializeDeserialize(text); |
| } |
| |
| @Test |
| public void testJavaSerializableSerde() throws Exception { |
| Integer integer = Integer.valueOf(42); |
| testSerializeDeserialize(integer); |
| } |
| |
| @Test |
| public void testReadWriteBoolArray() throws Exception { |
| |
| boolean[][] patterns = { |
| {true}, |
| {false}, |
| {true, false}, |
| {false, true}, |
| {true, false, true}, |
| {false, true, false}, |
| {false, true, false, false, true, true, true}, |
| {false, true, false, false, true, true, true, true}, |
| {false, true, false, false, true, true, true, true, false}, |
| }; |
| |
| for(int i=0; i<BOOL_ARRAY_MAX_LENGTH; i++) { |
| for(int j=0; j<patterns.length; j++) { |
| boolean[] arr = new boolean[i]; |
| for(int k=0; k<i; k++) { |
| arr[k] = patterns[j][k % patterns[j].length]; |
| } |
| |
| testSerializeDeserialize(new BoolArrayWrapper(arr)); |
| } |
| } |
| } |
| |
| @Test |
| public void testReadWriteNullFieldsInfo() throws IOException { |
| |
| Integer n = null; //null |
| Integer nn = new Integer(42); //not null |
| |
| testNullFieldsWith(nn); |
| testNullFieldsWith(n); |
| testNullFieldsWith(n, nn); |
| testNullFieldsWith(nn, n); |
| testNullFieldsWith(nn, n, nn, n); |
| testNullFieldsWith(nn, n, nn, n, n, n, nn, nn, nn, n, n); |
| } |
| |
| private void testNullFieldsWith( Object ... values ) throws IOException { |
| DataOutputBuffer out = new DataOutputBuffer(); |
| DataInputBuffer in = new DataInputBuffer(); |
| |
| IOUtils.writeNullFieldsInfo(out, values); |
| |
| in.reset(out.getData(), out.getLength()); |
| |
| boolean[] ret = IOUtils.readNullFieldsInfo(in); |
| |
| //assert |
| Assert.assertEquals(values.length, ret.length); |
| |
| for(int i=0; i<values.length; i++) { |
| Assert.assertEquals( values[i] == null , ret[i]); |
| } |
| } |
| |
| @Test |
| public void testReadWriteStringArray() throws Exception { |
| for(int i=0; i<STRING_ARRAY_MAX_LENGTH; i++) { |
| String[] arr = new String[i]; |
| for(int j=0; j<i; j++) { |
| arr[j] = String.valueOf(j); |
| } |
| |
| testSerializeDeserialize(new StringArrayWrapper(arr)); |
| } |
| } |
| |
| @Test |
| public void testReadFullyBufferLimit() throws IOException { |
| for(int i=-2; i<=2; i++) { |
| byte[] bytes = new byte[IOUtils.BUFFER_SIZE + i]; |
| for(int j=0; j<bytes.length; j++) { |
| bytes[j] = (byte)j; |
| } |
| ByteArrayInputStream is = new ByteArrayInputStream(bytes); |
| |
| byte[] readBytes = IOUtils.readFully(is); |
| assertByteArrayEquals(bytes, readBytes); |
| } |
| } |
| |
| public void assertByteArrayEquals(byte[] expected, byte[] actual) { |
| Assert.assertEquals("Array lengths do not match", expected.length, actual.length); |
| for(int j=0; j<expected.length; j++) { |
| Assert.assertEquals("bytes at position "+j+" do not match", expected[j], actual[j]); |
| } |
| } |
| } |