Tokens.java

package com.thinkaurelius.faunus;

import org.apache.log4j.Logger;

import java.io.BufferedReader;
import java.io.InputStreamReader;

/**
 * @author Marko A. Rodriguez (http://markorodriguez.com)
 */
public class Tokens {

    private static final Logger log = Logger.getLogger(Tokens.class);

    public static final String VERSION_RESOURCE = "com/thinkaurelius/faunus/version.txt";

    public static final String VERSION;

    public enum Action {DROP, KEEP}

    private static final String NAMESPACE = "faunus.mapreduce";

    static {
        try {
            BufferedReader versionReader = new BufferedReader(new InputStreamReader(
                    Tokens.class.getClassLoader().getResourceAsStream(VERSION_RESOURCE)));

            VERSION = versionReader.readLine();

            log.debug("Loaded Faunus version " + VERSION + " from classloader resource " + VERSION_RESOURCE);
        } catch (Throwable t) {
            log.error("The Faunus version file " + VERSION_RESOURCE + " could not be found on the classpath: " + t);
            throw new RuntimeException(t);
        }
    }

    public static String makeNamespace(final Class klass) {
        return NAMESPACE + "." + klass.getSimpleName().toLowerCase();
    }

    public static final String SETUP = "setup";
    public static final String MAP = "map";
    public static final String REDUCE = "reduce";
    public static final String CLEANUP = "cleanup";
    public static final String _ID = "_id";
    public static final String ID = "id";
    public static final String _PROPERTIES = "_properties";
    public static final String _COUNT = "_count";
    public static final String LABEL = "label";
    public static final String NULL = "null";
    public static final String TAB = "\t";
    public static final String NEWLINE = "\n";
    public static final String EMPTY_STRING = "";

    public static final String FAUNUS_JOB_JAR = "faunus-" + VERSION + "-job.jar";
    public static final String FAUNUS_HOME = "FAUNUS_HOME";

    public static final String PART = "part";
    public static final String GRAPH = "graph";
    public static final String SIDEEFFECT = "sideeffect";
    public static final String JOB = "job";

    public static final String BZ2 = "bz2";

    public static int DEFAULT_MAP_SPILL_OVER = 500;
    public static final String FAUNUS_PIPELINE_MAP_SPILL_OVER = "faunus.pipeline.map-spill-over";

}