content: /*
   * 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 com.aliyun.odps.mapred.local.pipeline;
  
  import java.io.IOException;
  import java.util.Iterator;
  
  import org.junit.Before;
  
  import com.aliyun.odps.counter.Counter;
  import com.aliyun.odps.data.Record;
  import com.aliyun.odps.data.TableInfo;
  import com.aliyun.odps.mapred.MapperBase;
  import com.aliyun.odps.mapred.ReducerBase;
  import com.aliyun.odps.mapred.conf.JobConf;
  import com.aliyun.odps.mapred.local.utils.TestUtils;
  import com.aliyun.odps.mapred.utils.InputUtils;
  import com.aliyun.odps.mapred.utils.OutputUtils;
  
  /**
   * Base Class of all PipeLine Test
   *
   * @author yubin.byb
   */
  public abstract class PipeLine {
  
    @Before
    public void setUp() throws Exception {
      TestUtils.setEnvironment(TestUtils.pipe);
    }
  
    /**
     * Counts the words in each record. For each record, emit each column as
     * (<b>word</b>, <b>1</b>).
     */
    public static class TokenizerMapper extends MapperBase {
  
      Record word;
      Record one;
      Counter gCnt;
  
      @Override
      public void setup(TaskContext context) throws IOException {
        word = context.createMapOutputKeyRecord();
        one = context.createMapOutputValueRecord();
        one.setBigint(0, 1L);
        gCnt = context.getCounter("MyCounters", "global_counts");
      }
  
      @Override
      public void map(long recordNum, Record record, TaskContext context)
          throws IOException {
        for (int i = 0; i < record.getColumnCount(); i++) {
          String[] words = record.get(i).toString().split("\\s+");
          for (String w : words) {
            word.setString(0, w);
            Counter cnt = context.getCounter("MyCounters", "map_outputs");
            cnt.increment(1);
            gCnt.increment(1);
            context.write(word, one);
          }
        }
      }
    }
  
    /**
     * A combiner class that combines map output by sum them.
     */
    public static class SumCombiner extends ReducerBase {
  
      private Record count;
  
      @Override
      public void setup(TaskContext context) throws IOException {
        count = context.createMapOutputValueRecord();
      }
  
      @Override
      public void reduce(Record key, Iterator<Record> values, TaskContext context)
          throws IOException {
        long c = 0;
        while (values.hasNext()) {
          Record val = values.next();
          c += (Long) val.get(0);
        }
        count.set(0, c);
        context.write(key, count);
      }
    }
  
    /**
     * A reducer class that just emits the sum of the input values.
     */
    public static class SumIReducer extends ReducerBase {
  
      private Record word;
      private Record sum;
      Counter gCnt;
  
      @Override
      public void setup(TaskContext context) throws IOException {
        word = context.createOutputKeyRecord();
        sum = context.createOutputValueRecord();
        gCnt = context.getCounter("MyCounters", "global_counts");
      }
  
      @Override
      public void reduce(Record key, Iterator<Record> values, TaskContext context)
          throws IOException {
        long count = 0;
  
        while (values.hasNext()) {
          Record val = values.next();
          count += (Long) val.get(0);
        }
  
        word.set(0, key.get(0));
        word.setBigint(1, count);
        sum.setBigint(0, count);
  
        Counter cnt = context.getCounter("MyCounters", "reduce_outputs");
        cnt.increment(1);
        gCnt.increment(1);
  
        context.write(word, sum);
      }
    }
  
    /**
     * A reducer class that just emits the sum of the input values.
     */
    public static class SumReducer extends ReducerBase {
  
      private Record result;
      Counter gCnt;
  
      @Override
      public void setup(TaskContext context) throws IOException {
        result = context.createOutputRecord();
        gCnt = context.getCounter("MyCounters", "global_counts");
      }
  
      @Override
      public void reduce(Record key, Iterator<Record> values, TaskContext context)
          throws IOException {
        long count = 0;
  
        while (values.hasNext()) {
          Record val = values.next();
          count += (Long) val.get(0);
  
          Counter cnt = context.getCounter("MyCounters", "reduce_outputs");
          cnt.increment(1);
          gCnt.increment(1);
        }
  
        result.set(0, key.get(0));
        result.set(1, count);
        context.write(result);
      }
    }
  
    /**
     * IdentityMapper
     */
    public static class IdentityMapper extends MapperBase {
  
      Record v;
  
      @Override
      public void setup(TaskContext context) throws IOException {
        v = context.createMapOutputValueRecord();
      }
  
      @Override
      public void map(long recordNum, Record record, TaskContext context)
          throws IOException {
        context.write(record, v);
  
        Counter cnt = context.getCounter("MapCounters", "map_input_records");
        cnt.increment(1);
      }
    }
  
    /**
     * Identity Reducer Medial
     */
    public static class IdentityIReducer extends ReducerBase {
  
      @Override
      public void reduce(Record key, Iterator<Record> values, TaskContext context)
          throws IOException {
        while (values.hasNext()) {
          Record val = values.next();
          context.write(key, val);
  
          Counter cnt = context.getCounter("ReduceCounters",
                                           "reduce_input_records");
          cnt.increment(1);
        }
      }
    }
  
    /**
     * IdentityReducer
     */
    public static class IdentityReducer extends ReducerBase {
  
      @Override
      public void reduce(Record key, Iterator<Record> values, TaskContext context)
          throws IOException {
        while (values.hasNext()) {
          @SuppressWarnings("unused")
          Record val = values.next();
          context.write(key);
  
          Counter cnt = context.getCounter("ReduceCounters",
                                           "reduce_input_records");
          cnt.increment(1);
        }
      }
    }
  
    /**
     * mr_src, project.mr_src, mr_srcpart|pt=1, project.mr_srcpart|pt=2/ds=2
     *
     * @param job
     * @param input
     * @throws Exception
     */
    public static void addInputTable(JobConf job, final String input)
        throws Exception {
      String[] table = input.trim().split("\\|");
  
      if (table.length == 1) { // project.mr_src
        String[] ss = table[0].trim().split("\\.");
        if (ss.length == 1) {
          InputUtils.addTable(TableInfo.builder().tableName(ss[0]).build(), job);
        } else if (ss.length == 2) {
          InputUtils.addTable(
              TableInfo.builder().projectName(ss[0]).tableName(ss[1]).build(),
              job);
        } else {
          throw new Exception("Style of input " + input + " wrong");
        }
      } else if (table.length == 2) { // project.mr_srcpart|pt=2/ds=2
        String[] ss = table[0].trim().split("\\.");
        if (ss.length == 1) {
          InputUtils.addTable(
              TableInfo.builder().tableName(ss[0]).partSpec(table[1]).build(),
              job);
        } else if (ss.length == 2) {
          InputUtils.addTable(
              TableInfo.builder().projectName(ss[0]).tableName(ss[1])
                  .partSpec(table[1]).build(), job);
        } else {
          throw new Exception("Style of input " + input + " wrong");
        }
      } else {
        throw new Exception("Style of input " + input + " wrong");
      }
    }
  
    /**
     * mr_multiinout_out1, project.mr_multiinout_out1, mr_multiinout_out2|a=1/b=1,
     * project.mr_multiinout_out2|a=2/b=2|out2;
     *
     * @param job
     * @param table
     * @throws Exception
     */
    public static void addOutputTable(JobConf job, final String output)
        throws Exception {
      String[] table = output.split("\\|");
  
      if (table.length == 1) { // project.mr_multiinout_out1
        String[] ss = table[0].trim().split("\\.");
        if (ss.length == 1) {
          OutputUtils.addTable(TableInfo.builder().tableName(ss[0]).build(), job);
        } else if (ss.length == 2) {
          OutputUtils.addTable(
              TableInfo.builder().projectName(ss[0]).tableName(ss[1]).build(),
              job);
        } else {
          throw new Exception("Style of output " + output + " wrong");
        }
      } else if (table.length == 2) { // project.mr_multiinout_out2|a=1/b=1
        String[] ss = table[0].trim().split("\\.");
        if (ss.length == 1) {
          OutputUtils.addTable(
              TableInfo.builder().tableName(ss[0]).partSpec(table[1]).build(),
              job);
        } else if (ss.length == 2) {
          OutputUtils.addTable(
              TableInfo.builder().projectName(ss[0]).tableName(ss[1])
                  .partSpec(table[1]).build(), job);
        } else {
          throw new Exception("Style of output " + output + " wrong");
        }
      } else if (table.length == 3) { // project.mr_multiinout_out2|a=2/b=2|out2
        String[] ss = table[0].trim().split("\\.");
        if (ss.length == 1) {
          OutputUtils.addTable(
              TableInfo.builder().tableName(ss[0]).partSpec(table[1])
                  .label(table[2]).build(), job);
        } else if (ss.length == 2) {
          OutputUtils.addTable(
              TableInfo.builder().projectName(ss[0]).tableName(ss[1])
                  .partSpec(table[1]).label(table[2]).build(), job);
        } else {
          throw new Exception("Style of output " + output + " wrong");
        }
      } else {
        throw new Exception("Style of output " + output + " wrong");
      }
    }
  
  }
  