org.apache.mahout.common.DummyStatusReporter.java Source code

Introduction

Here is the source code for org.apache.mahout.common.DummyStatusReporter.java

Source

/**
 * 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.apache.mahout.common;

import org.easymock.EasyMock;

import java.util.Map;

import com.google.common.collect.Maps;
import org.apache.hadoop.mapreduce.Counter;
import org.apache.hadoop.mapreduce.StatusReporter;

public final class DummyStatusReporter extends StatusReporter {

    private final Map<Enum<?>, Counter> counters = Maps.newHashMap();
    private final Map<String, Counter> counterGroups = Maps.newHashMap();

    private static Counter newCounter() {
        try {
            // 0.23 case
            String c = "org.apache.hadoop.mapreduce.counters.GenericCounter";
            return (Counter) EasyMock.createMockBuilder(Class.forName(c)).createMock();
        } catch (ClassNotFoundException e) {
            // 0.20 case
            return EasyMock.createMockBuilder(Counter.class).createMock();
        }
    }

    @Override
    public Counter getCounter(Enum<?> name) {
        if (!counters.containsKey(name)) {
            counters.put(name, newCounter());
        }
        return counters.get(name);
    }

    @Override
    public Counter getCounter(String group, String name) {
        if (!counterGroups.containsKey(group + name)) {
            counterGroups.put(group + name, newCounter());
        }
        return counterGroups.get(group + name);
    }

    @Override
    public void progress() {
    }

    @Override
    public void setStatus(String status) {
    }

    @Override
    public float getProgress() {
        return 0.0f;
    }

}