TestKiteProcessorsCluster.java

/*
 * 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
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package org.apache.nifi.processors.kite;

import com.google.common.collect.Lists;

import java.io.IOException;
import java.io.OutputStream;
import java.nio.charset.Charset;
import java.util.List;

import org.apache.avro.Schema;
import org.apache.avro.SchemaBuilder;
import org.apache.avro.generic.GenericData.Record;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.nifi.util.TestRunner;
import org.apache.nifi.util.TestRunners;
import org.junit.AfterClass;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Ignore;
import org.junit.Test;
import org.kitesdk.data.Dataset;
import org.kitesdk.data.DatasetDescriptor;
import org.kitesdk.data.Datasets;
import org.kitesdk.data.spi.DefaultConfiguration;
import org.kitesdk.minicluster.HdfsService;
import org.kitesdk.minicluster.HiveService;
import org.kitesdk.minicluster.MiniCluster;

import static org.apache.nifi.processors.kite.TestUtil.USER_SCHEMA;
import static org.apache.nifi.processors.kite.TestUtil.bytesFor;
import static org.apache.nifi.processors.kite.TestUtil.streamFor;
import static org.apache.nifi.processors.kite.TestUtil.user;

@Ignore("Does not work on windows")
public class TestKiteProcessorsCluster {

    public static MiniCluster cluster = null;
    public static DatasetDescriptor descriptor = new DatasetDescriptor.Builder()
            .schema(USER_SCHEMA)
            .build();

    @BeforeClass
    public static void startCluster() throws IOException, InterruptedException {
        long rand = Math.abs((long) (Math.random() * 1000000));
        cluster = new MiniCluster.Builder()
                .workDir("/tmp/minicluster-" + rand)
                .clean(true)
                .addService(HdfsService.class)
                .addService(HiveService.class)
                .bindIP("127.0.0.1")
                .hiveMetastorePort(9083)
                .build();
        cluster.start();
    }

    @AfterClass
    public static void stopCluster() throws IOException, InterruptedException {
        if (cluster != null) {
            cluster.stop();
            cluster = null;
        }
    }

    @Test
    public void testBasicStoreToHive() throws IOException {
        String datasetUri = "dataset:hive:ns/test";

        Dataset<Record> dataset = Datasets.create(datasetUri, descriptor, Record.class);

        TestRunner runner = TestRunners.newTestRunner(StoreInKiteDataset.class);
        runner.assertNotValid();

        runner.setProperty(StoreInKiteDataset.KITE_DATASET_URI, datasetUri);
        runner.assertValid();

        List<Record> users = Lists.newArrayList(
                user("a", "a@example.com"),
                user("b", "b@example.com"),
                user("c", "c@example.com")
        );

        runner.enqueue(streamFor(users));
        runner.run();

        runner.assertAllFlowFilesTransferred("success", 1);
        List<Record> stored = Lists.newArrayList(
                (Iterable<Record>) dataset.newReader());
        Assert.assertEquals("Records should match", users, stored);

        Datasets.delete(datasetUri);
    }

    @Test
    public void testSchemaFromDistributedFileSystem() throws IOException {
        Schema expected = SchemaBuilder.record("Test").fields()
                .requiredLong("id")
                .requiredString("color")
                .optionalDouble("price")
                .endRecord();

        Path schemaPath = new Path("hdfs:/tmp/schema.avsc");
        FileSystem fs = schemaPath.getFileSystem(DefaultConfiguration.get());
        OutputStream out = fs.create(schemaPath);
        out.write(bytesFor(expected.toString(), Charset.forName("utf8")));
        out.close();

        Schema schema = AbstractKiteProcessor.getSchema(
                schemaPath.toString(), DefaultConfiguration.get());

        Assert.assertEquals("Schema from file should match", expected, schema);
    }
}