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 org.junit.Test;
  
  import com.aliyun.odps.Column;
  import com.aliyun.odps.OdpsType;
  import com.aliyun.odps.counter.Counter;
  import com.aliyun.odps.counter.Counters;
  import com.aliyun.odps.data.Record;
  import com.aliyun.odps.mapred.JobClient;
  import com.aliyun.odps.mapred.MapperBase;
  import com.aliyun.odps.mapred.ReducerBase;
  import com.aliyun.odps.mapred.RunningJob;
  import com.aliyun.odps.mapred.conf.JobConf;
  import com.aliyun.odps.mapred.local.utils.TestUtils;
  import com.aliyun.odps.pipeline.Pipeline;
  import com.aliyun.odps.pipeline.Pipeline.Builder;
  
  /**
   * Counter
   *
   * @author yubin.byb
   */
  public class PlCounter extends PipelineExampleBase {
  
    @Before
    public void setUp() throws Exception {
      TestUtils.setEnvironment(TestUtils.pipe);
    }
  
    enum MyCounter {
      TOTAL_TASKS, MAP_TASKS, REDUCE_TASKS
    }
  
    public static class ResourceMapper extends MapperBase {
  
      @Override
      public void setup(TaskContext context) throws IOException {
        Counter counter = null;
        counter = context.getCounter("MapCounters", "map_setup_counter1");
        counter.setValue(Long.MAX_VALUE);
        counter = context.getCounter("MapCounters", "map_setup_counter2");
        counter.setValue(Long.MIN_VALUE);
      }
  
      @Override
      public void map(long key, Record record, TaskContext context)
          throws IOException {
  
        Counter cnt = context.getCounter("MapCounters", "map_input_records");
        cnt.increment(1);
      }
  
      @Override
      public void cleanup(TaskContext context) throws IOException {
        Counter map_tasks = context.getCounter(MyCounter.MAP_TASKS);
        Counter total_tasks = context.getCounter(MyCounter.TOTAL_TASKS);
        map_tasks.increment(1);
        total_tasks.increment(1);
      }
    }
  
    public static class ResourceReducer extends ReducerBase {
  
      @Override
      public void setup(TaskContext context) throws IOException {
        Counter counter = null;
        counter = context.getCounter("ReduceCounters", "reduce_setup_counter1");
        counter.setValue(Long.MAX_VALUE);
        counter = context.getCounter("ReduceCounters", "reduce_setup_counter2");
        counter.setValue(Long.MIN_VALUE);
      }
  
      @Override
      public void reduce(Record key, Iterator<Record> values, TaskContext context)
          throws IOException {
        while (values.hasNext()) {
          Counter cnt = context.getCounter("ReduceCounters",
                                           "reduce_input_records");
          cnt.increment(1);
        }
      }
  
      @Override
      public void cleanup(TaskContext context) throws IOException {
        Counter reduce_tasks = context.getCounter(MyCounter.REDUCE_TASKS);
        Counter total_tasks = context.getCounter(MyCounter.TOTAL_TASKS);
        reduce_tasks.increment(1);
        total_tasks.increment(1);
  
        Record record = context.createOutputRecord();
        record.set(new Object[]{"map.records",
                                context.getCounter("MapCounters", "map_input_records").getValue()});
        context.write(record);
        record.set(new Object[]{
            "reduce.records",
            context.getCounter("ReduceCounters", "reduce_input_records")
                .getValue()});
        context.write(record);
      }
    }
  
    public static void verify(Counters counters) throws IOException {
      long m = counters.findCounter(MyCounter.MAP_TASKS).getValue();
      long r = counters.findCounter(MyCounter.REDUCE_TASKS).getValue();
      long total = counters.findCounter(MyCounter.TOTAL_TASKS).getValue();
  
      if (m <= 0 || r <= 0 || m + r != total) {
        throw new IOException("Counter error: m: " + m + ", r: " + r
                              + ", total: " + total);
      }
  
      long val = counters.findCounter("MapCounters", "map_setup_counter1")
          .getValue();
      if (val != Long.MAX_VALUE) {
        throw new IOException("Counter MapCounters,map_setup_counter1 " + val
                              + " should " + Long.MAX_VALUE);
      }
  
      val = counters.findCounter("MapCounters", "map_setup_counter2").getValue();
      if (val != Long.MIN_VALUE) {
        throw new IOException("Counter MapCounters,map_setup_counter1 " + val
                              + " should " + Long.MAX_VALUE);
      }
  
      val = counters.findCounter("ReduceCounters", "reduce_setup_counter1")
          .getValue();
      if (val != Long.MAX_VALUE) {
        throw new IOException("Counter ReduceCounters,reduce_setup_counter1 "
                              + val + " should " + Long.MAX_VALUE);
      }
  
      val = counters.findCounter("ReduceCounters", "reduce_setup_counter2")
          .getValue();
      if (val != Long.MIN_VALUE) {
        throw new IOException("Counter ReduceCounters,reduce_setup_counter2 "
                              + val + " should " + Long.MAX_VALUE);
      }
    }
  
    @Test
    public void test() throws Exception {
      String[] args = new String[2];
      args[0] = "pipe_plcounter_in";
      args[1] = "pipe_plcounter_out";
  
      if (args.length != 2 && args.length != 3) {
        System.err
            .println(
                "Usage: Identity <[project.]in_table> <[project.]out_table> <[path/]resource_file> <resource_file_lines> <resource_table> <resource_table_records>");
        System.exit(2);
      }
  
      JobConf job = new JobConf();
      Builder builder = Pipeline.builder();
  
      // mapper
      builder
          .addMapper(ResourceMapper.class)
          .setOutputKeySchema(new Column[]{new Column("key", OdpsType.STRING)})
          .setOutputValueSchema(
              new Column[]{new Column("value", OdpsType.STRING)});
  
      // reducer
      builder
          .addReducer(ResourceReducer.class)
          .setOutputKeySchema(new Column[]{new Column("key", OdpsType.STRING)})
          .setOutputValueSchema(
              new Column[]{new Column("value", OdpsType.STRING)});
  
      Pipeline pipeline = builder.createPipeline();
  
      addInputTable(job, args[0]);
      addOutputTable(job, args[1]);
  
      RunningJob rJob = JobClient.runJob(job, pipeline);
      verify(rJob.getCounters());
    }
  }
  