/**
* 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.hadoop.raid;
import java.util.List;
import junit.framework.TestCase;
import org.apache.hadoop.conf.Configuration;
public class TestCodec extends TestCase {
public void testCreation() throws Exception {
Configuration conf = new Configuration();
String jsonStr =
" [\n" +
" { \n" +
" \"id\" : \"xor\",\n" +
" \"parity_dir\" : \"/raid\",\n" +
" \"stripe_length\" : 10, \n" +
" \"parity_length\" : 1,\n" +
" \"priority\" : 100,\n" +
" \"erasure_code\" : \"org.apache.hadoop.raid.XorCode\",\n" +
" }, \n" +
" { \n" +
" \"id\" : \"rs\",\n" +
" \"parity_dir\" : \"/raidrs\",\n" +
" \"stripe_length\" : 10,\n" +
" \"parity_length\" : 4,\n" +
" \"priority\" : 300,\n" +
" \"erasure_code\" : \"org.apache.hadoop.raid.ReedSolomonCode\",\n" +
" \"description\" : \"ReedSolomonCode code\"\n" +
" }, \n" +
" { \n" +
" \"id\" : \"sr\",\n" +
" \"parity_dir\" : \"/raidsr\",\n" +
" \"stripe_length\" : 10, \n" +
" \"parity_length\" : 5, \n" +
" \"degree\" : 2,\n" +
" \"erasure_code\" : \"org.apache.hadoop.raid.SimpleRegeneratingCode\",\n" +
" \"priority\" : 200,\n" +
" \"description\" : \"SimpleRegeneratingCode code\",\n" +
" }, \n" +
" ]\n";
conf.set("raid.codecs.json", jsonStr);
Codec.initializeCodecs(conf);
assertEquals("xor", Codec.getCodec("xor").id);
assertEquals("rs", Codec.getCodec("rs").id);
assertEquals("sr", Codec.getCodec("sr").id);
List<Codec> codecs = Codec.getCodecs();
assertEquals(3, codecs.size());
assertEquals("rs", codecs.get(0).id);
assertEquals(10, codecs.get(0).stripeLength);
assertEquals(4, codecs.get(0).parityLength);
assertEquals(300, codecs.get(0).priority);
assertEquals("/raidrs", codecs.get(0).parityDirectory);
assertEquals("/tmp/raidrs", codecs.get(0).tmpParityDirectory);
assertEquals("/tmp/raidrs_har", codecs.get(0).tmpHarDirectory);
assertEquals("ReedSolomonCode code", codecs.get(0).description);
assertEquals("sr", codecs.get(1).id);
assertEquals(10, codecs.get(1).stripeLength);
assertEquals(5, codecs.get(1).parityLength);
assertEquals(200, codecs.get(1).priority);
assertEquals("/raidsr", codecs.get(1).parityDirectory);
assertEquals("/tmp/raidsr", codecs.get(1).tmpParityDirectory);
assertEquals("/tmp/raidsr_har", codecs.get(1).tmpHarDirectory);
assertEquals(2, codecs.get(1).json.getInt("degree"));
assertEquals("SimpleRegeneratingCode code", codecs.get(1).description);
assertEquals("xor", codecs.get(2).id);
assertEquals(10, codecs.get(2).stripeLength);
assertEquals(1, codecs.get(2).parityLength);
assertEquals(100, codecs.get(2).priority);
assertEquals("/raid", codecs.get(2).parityDirectory);
assertEquals("/tmp/raid", codecs.get(2).tmpParityDirectory);
assertEquals("/tmp/raid_har", codecs.get(2).tmpHarDirectory);
assertEquals("", codecs.get(2).description);
assertTrue(codecs.get(0).createErasureCode(conf) instanceof ReedSolomonCode);
}
}