com.justgiving.raven.kissmetrics.schema.KissmetricsJsonToSchemaDriver.java Source code

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Here is the source code for com.justgiving.raven.kissmetrics.schema.KissmetricsJsonToSchemaDriver.java

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/*
 * Copyright (c) 2014-2015 Giving.com, trading as JustGiving or its affiliates. All Rights Reserved. 
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"). 
 * You may not use this file except in compliance with the License. 
 * A copy of the License is located in the "license" file accompanying this file.
 * 
 * This file 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.
 * 
 * @author Richard Freeman
 * 
 */

package com.justgiving.raven.kissmetrics.schema;

import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;

public class KissmetricsJsonToSchemaDriver {

    public static void main(String[] args) throws Exception {

        int numberOfReducers = 1;
        if (args.length > 2 && args[2] != null) {
            numberOfReducers = Integer.parseInt(args[2]);
            if (numberOfReducers <= 0) {
                numberOfReducers = 1;
            }
        }

        System.out.println("Kissmetrics Json Schema Extrator");

        Job job = Job.getInstance();
        job.setJarByClass(KissmetricsJsonToSchemaDriver.class);
        job.setJobName("Kissmetrics Json Schema Extrator");
        FileInputFormat.addInputPath(job, new Path(args[0]));
        FileOutputFormat.setOutputPath(job, new Path(args[1]));
        job.setMapperClass(com.justgiving.raven.kissmetrics.schema.KissmetricsJsonToSchemaMapper.class);
        job.setReducerClass(com.justgiving.raven.kissmetrics.schema.KissmetricsJsonToSchemaReducer.class);
        job.setNumReduceTasks(numberOfReducers);
        job.setOutputKeyClass(Text.class);
        job.setOutputValueClass(Text.class);
        System.exit(job.waitForCompletion(true) ? 0 : 1);
    }

}