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CascadingLocalTest.java
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CascadingLocalTest.java
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/*
* Copyright 2013 the original author or authors.
*
* Licensed 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.elasticsearch.hadoop.cascading;
import org.elasticsearch.hadoop.EmbeddedElasticsearchServer;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import cascading.flow.local.LocalFlowConnector;
import cascading.operation.Identity;
import cascading.pipe.Each;
import cascading.pipe.Pipe;
import cascading.scheme.local.TextDelimited;
import cascading.scheme.local.TextLine;
import cascading.tap.Tap;
import cascading.tap.local.FileTap;
import cascading.tap.local.StdOutTap;
import cascading.tuple.Fields;
public class CascadingLocalTest {
private static EmbeddedElasticsearchServer esServer;
@BeforeClass
public static void beforeClass() {
esServer = new EmbeddedElasticsearchServer();
}
@AfterClass
public static void afterClass() {
esServer.shutdown();
}
@Test
public void testWriteToESAdnReadFromES() throws Exception {
testWriteToES();
testReadFromES();
}
private void testWriteToES() throws Exception {
// local file-system source
Tap in = new FileTap(new TextDelimited(new Fields("id", "name", "url", "picture")), "src/test/resources/artists.dat");
Tap out = new ESTap("radio/artists", new Fields("name", "url", "picture"));
Pipe pipe = new Pipe("copy");
// rename "id" -> "garbage"
pipe = new Each(pipe, new Identity(new Fields("garbage", "name", "url", "picture")));
new LocalFlowConnector().connect(in, out, pipe).complete();
}
private void testReadFromES() throws Exception {
Tap in = new ESTap("http://localhost:9200/radio/artists/_search?q=me*");
Pipe copy = new Pipe("copy");
// print out
StdOutTap out = new StdOutTap(new TextLine());
new LocalFlowConnector().connect(in, out, copy).complete();
}
}