Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
MetricsRegistryDebugger |
|
| 1.0;1 |
1 | /* | |
2 | * Licensed to the Apache Software Foundation (ASF) under one | |
3 | * or more contributor license agreements. See the NOTICE file | |
4 | * distributed with this work for additional information | |
5 | * regarding copyright ownership. The ASF licenses this file | |
6 | * to you under the Apache License, Version 2.0 (the | |
7 | * "License"); you may not use this file except in compliance | |
8 | * with the License. You may obtain a copy of the License at | |
9 | * | |
10 | * http://www.apache.org/licenses/LICENSE-2.0 | |
11 | * | |
12 | * Unless required by applicable law or agreed to in writing, software | |
13 | * distributed under the License is distributed on an "AS IS" BASIS, | |
14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
15 | * See the License for the specific language governing permissions and | |
16 | * limitations under the License. | |
17 | */ | |
18 | ||
19 | package org.apache.giraph.metrics; | |
20 | ||
21 | import org.apache.log4j.Logger; | |
22 | ||
23 | import com.yammer.metrics.core.Metric; | |
24 | import com.yammer.metrics.core.MetricName; | |
25 | import com.yammer.metrics.core.MetricsRegistryListener; | |
26 | ||
27 | /** | |
28 | * A simple MetricsRegistry listener that prints every Metric added/removed. | |
29 | */ | |
30 | 0 | public class MetricsRegistryDebugger implements MetricsRegistryListener { |
31 | /** logger instance */ | |
32 | 0 | private static final Logger LOG = |
33 | 0 | Logger.getLogger(MetricsRegistryDebugger.class); |
34 | /** static singleton instance */ | |
35 | 0 | private static final MetricsRegistryDebugger INSTANCE = |
36 | new MetricsRegistryDebugger(); | |
37 | ||
38 | /** | |
39 | * Get singleton static instance of this class. | |
40 | * | |
41 | * @return singleton static instance. | |
42 | */ | |
43 | public static MetricsRegistryDebugger get() { | |
44 | 0 | return INSTANCE; |
45 | } | |
46 | ||
47 | @Override | |
48 | public void onMetricAdded(MetricName name, Metric metric) { | |
49 | 0 | LOG.info("Adding metric " + name + " - " + |
50 | 0 | metric.getClass().getSimpleName()); |
51 | 0 | } |
52 | ||
53 | @Override | |
54 | public void onMetricRemoved(MetricName name) { | |
55 | 0 | LOG.info("Removing metric " + name); |
56 | 0 | } |
57 | } |