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.BufferedInputStream;
  import java.io.FileNotFoundException;
  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.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.conf.JobConf;
  import com.aliyun.odps.mapred.local.utils.TestUtils;
  import com.aliyun.odps.pipeline.Pipeline;
  import com.aliyun.odps.pipeline.Pipeline.Builder;
  
  /**
   * Resource
   *
   * @author yubin.byb
   */
  public class PlResource extends PipelineExampleBase {
  
    @Before
    public void setUp() throws Exception {
      TestUtils.setEnvironment(TestUtils.pipe);
    }
  
    public static class ResourceMapper extends MapperBase {
  
      @Override
      public void setup(TaskContext context) throws IOException {
      }
  
      @Override
      public void map(long key, Record record, TaskContext context) throws IOException {
  
      }
  
      @Override
      public void cleanup(TaskContext context) throws IOException {
  
      }
    }
  
    public static class ResourceReducer extends ReducerBase {
  
      @Override
      public void setup(TaskContext context) throws IOException {
        Record record = context.createOutputRecord();
        StringBuilder data = new StringBuilder();
        BufferedInputStream bufferedInput = null;
        String resFile = null;
        long total = 0;
  
        try {
          byte[] buffer = new byte[1024];
          int bytesRead = 0;
  
          resFile = context.getJobConf().get("resource.file");
          bufferedInput = context.readResourceFileAsStream(resFile);
  
          while ((bytesRead = bufferedInput.read(buffer)) != -1) {
            String chunk = new String(buffer, 0, bytesRead);
            data.append(chunk);
          }
  
          String lines[] = data.toString().split("\n");
          for (int i = 0; i < lines.length; i++) {
            total++;
          }
        } catch (FileNotFoundException ex) {
          throw new IOException(ex);
        } catch (IOException ex) {
          throw new IOException(ex);
        } finally {
          if (bufferedInput != null) {
            bufferedInput.close();
          }
        }
  
        record.set(new Object[]{resFile, total});
        context.write(record);
      }
  
      @Override
      public void reduce(Record key, Iterator<Record> values, TaskContext context)
          throws IOException {
  
      }
  
      @Override
      public void cleanup(TaskContext context) throws IOException {
        Record record = context.createOutputRecord();
        String resTable = context.getJobConf().get("resource.table");
        long total = 0;
  
        Iterator<Record> iter = context.readResourceTable(resTable);
        while (iter.hasNext()) {
          Record r = iter.next();
          total++;
        }
  
        record.set(new Object[]{resTable, total});
        context.write(record);
      }
    }
  
    @Test
    public void test() throws Exception {
      String[] args = new String[4];
      args[0] = "pipe_plresource_in";
      args[1] = "pipe_plresource_out";
      args[2] = "plresource.txt";
      args[3] = "table_resource1";
      if (args.length != 4) {
        System.err
            .println(
                "Usage: Identity <[project.]in_table> <[project.]out_table> <resource_file> <resource_table>");
        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);
  
      Pipeline pipeline = builder.createPipeline();
  
      job.set("resource.file", args[2]);
      job.set("resource.table", args[3]);
  
      job.setResources("plresource.txt");
  
      addInputTable(job, args[0]);
      addOutputTable(job, args[1]);
  
      JobClient.runJob(job, pipeline);
    }
  }
  