/*
 * 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.accumulo.core.client.mapreduce.impl;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

import org.apache.accumulo.core.client.IteratorSetting;
import org.apache.accumulo.core.client.security.tokens.PasswordToken;
import org.apache.accumulo.core.data.Key;
import org.apache.accumulo.core.data.Range;
import org.apache.accumulo.core.iterators.user.SummingCombiner;
import org.apache.accumulo.core.iterators.user.WholeRowIterator;
import org.apache.accumulo.core.security.Authorizations;
import org.apache.accumulo.core.util.DeprecationUtil;
import org.apache.accumulo.core.util.Pair;
import org.apache.hadoop.io.Text;
import org.apache.log4j.Level;
import org.junit.Assert;
import org.junit.Test;

public class BatchInputSplitTest {

  @Test
  public void testSimpleWritable() throws IOException {
    Range[] ranges = new Range[] {new Range(new Key("a"), new Key("b"))};
    BatchInputSplit split = new BatchInputSplit("table", "1", Arrays.asList(ranges), new String[] {"localhost"});

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    DataOutputStream dos = new DataOutputStream(baos);
    split.write(dos);

    BatchInputSplit newSplit = new BatchInputSplit();

    ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
    DataInputStream dis = new DataInputStream(bais);
    newSplit.readFields(dis);

    Assert.assertEquals(split.getTableName(), newSplit.getTableName());
    Assert.assertEquals(split.getTableId(), newSplit.getTableId());
    Assert.assertEquals(split.getRanges(), newSplit.getRanges());
    Assert.assertTrue(Arrays.equals(split.getLocations(), newSplit.getLocations()));
  }

  @Test
  public void testAllFieldsWritable() throws IOException {
    Range[] ranges = new Range[] {new Range(new Key("a"), new Key("b"))};
    BatchInputSplit split = new BatchInputSplit("table", "1", Arrays.asList(ranges), new String[] {"localhost"});

    Set<Pair<Text,Text>> fetchedColumns = new HashSet<>();

    fetchedColumns.add(new Pair<>(new Text("colf1"), new Text("colq1")));
    fetchedColumns.add(new Pair<>(new Text("colf2"), new Text("colq2")));

    // Fake some iterators
    ArrayList<IteratorSetting> iterators = new ArrayList<>();
    IteratorSetting setting = new IteratorSetting(50, SummingCombiner.class);
    setting.addOption("foo", "bar");
    iterators.add(setting);

    setting = new IteratorSetting(100, WholeRowIterator.class);
    setting.addOption("bar", "foo");
    iterators.add(setting);

    split.setTableName("table");
    split.setAuths(new Authorizations("foo"));
    split.setFetchedColumns(fetchedColumns);
    split.setToken(new PasswordToken("password"));
    split.setPrincipal("root");
    DeprecationUtil.setMockInstance(split, true);
    split.setInstanceName("instance");
    split.setZooKeepers("localhost");
    split.setIterators(iterators);
    split.setLogLevel(Level.WARN);

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    DataOutputStream dos = new DataOutputStream(baos);
    split.write(dos);

    BatchInputSplit newSplit = new BatchInputSplit();

    ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
    DataInputStream dis = new DataInputStream(bais);
    newSplit.readFields(dis);

    Assert.assertEquals(split.getRanges(), newSplit.getRanges());
    Assert.assertArrayEquals(split.getLocations(), newSplit.getLocations());

    Assert.assertEquals(split.getTableName(), newSplit.getTableName());
    Assert.assertEquals(split.getAuths(), newSplit.getAuths());
    Assert.assertEquals(split.getFetchedColumns(), newSplit.getFetchedColumns());
    Assert.assertEquals(split.getToken(), newSplit.getToken());
    Assert.assertEquals(split.getPrincipal(), newSplit.getPrincipal());
    Assert.assertEquals(split.getInstanceName(), newSplit.getInstanceName());
    Assert.assertEquals(DeprecationUtil.isMockInstanceSet(split), DeprecationUtil.isMockInstanceSet(newSplit));
    Assert.assertEquals(split.getZooKeepers(), newSplit.getZooKeepers());
    Assert.assertEquals(split.getIterators(), newSplit.getIterators());
    Assert.assertEquals(split.getLogLevel(), newSplit.getLogLevel());
  }

}