org.cloudata.util.upload.UploadMap.java Source code

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Here is the source code for org.cloudata.util.upload.UploadMap.java

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/**
 * 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.cloudata.util.upload;

import java.io.IOException;

import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.Mapper;
import org.apache.hadoop.mapred.OutputCollector;
import org.apache.hadoop.mapred.Reporter;
import org.cloudata.core.client.CTable;
import org.cloudata.core.common.conf.CloudataConf;
import org.cloudata.core.parallel.hadoop.AbstractTabletInputFormat;

/**
 * @author jindolk
 *
 */
class UploadMap implements Mapper<LongWritable, Text, Text, Text> {
    private CTable ctable;
    private IOException err;
    private String delim;
    private String[] columns;
    private int[] fieldNums;
    private boolean keyValuePair;

    private long timestamp = System.currentTimeMillis();

    private int count = 0;

    @Override
    public void map(LongWritable key, Text value, OutputCollector<Text, Text> output, Reporter reporter)
            throws IOException {
        if (err != null) {
            throw err;
        }
        String line = value.toString();
        UploadUtil.putToTable(ctable, line, delim, columns, fieldNums, keyValuePair, timestamp);
        count++;
        if (count % 5000 == 0) {
            System.out.println(count + " rows inserted");
        }
    }

    @Override
    public void configure(JobConf job) {
        try {
            String tableName = job.get(AbstractTabletInputFormat.OUTPUT_TABLE);
            CloudataConf nconf = new CloudataConf(job);
            ctable = CTable.openTable(nconf, tableName);
            if (ctable == null) {
                throw new IOException("No table:" + tableName);
            }
            delim = job.get("uploadJob.delim", "\t");
            columns = job.get("uploadJob.columns").split(",");

            String[] fieldNumStr = job.get("uploadJob.fieldNums").split(",");
            fieldNums = new int[fieldNumStr.length];
            for (int i = 0; i < fieldNumStr.length; i++) {
                fieldNums[i] = Integer.parseInt(fieldNumStr[i]);
            }

            keyValuePair = job.getBoolean("uploadJob.keyValuePair", false);
        } catch (Exception e) {
            err = new IOException(e.getMessage());
            err.initCause(e);
        }
    }

    @Override
    public void close() throws IOException {
    }
}